Merge remote-tracking branch 'origin/released'

Conflicts:
	mesalib/src/mapi/glapi/glapi.h
	mesalib/src/mesa/main/syncobj.h
	xorg-server/dix/events.c
	xorg-server/dix/getevents.c
	xorg-server/include/misc.h

16 files changed, 2107 insertions, 2091 deletions

diff --git a/mesalib/src/mesa/swrast/s_aaline.c b/mesalib/src/mesa/swrast/s_aaline.c
index be817f326..d4b1805d9 100644
--- a/mesalib/src/mesa/swrast/s_aaline.c
+++ b/mesalib/src/mesa/swrast/s_aaline.c
@@ -1,492 +1,492 @@
-/*

- * Mesa 3-D graphics library

- * Version:  6.5.3

- *

- * Copyright (C) 1999-2007  Brian Paul   All Rights Reserved.

- *

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the "Software"),

- * to deal in the Software without restriction, including without limitation

- * the rights to use, copy, modify, merge, publish, distribute, sublicense,

- * and/or sell copies of the Software, and to permit persons to whom the

- * Software is furnished to do so, subject to the following conditions:

- *

- * The above copyright notice and this permission notice shall be included

- * in all copies or substantial portions of the Software.

- *

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

- */

-

-

-#include "main/glheader.h"

-#include "main/imports.h"

-#include "main/macros.h"

-#include "main/mtypes.h"

-#include "swrast/s_aaline.h"

-#include "swrast/s_context.h"

-#include "swrast/s_span.h"

-#include "swrast/swrast.h"

-

-

-#define SUB_PIXEL 4

-

-

-/*

- * Info about the AA line we're rendering

- */

-struct LineInfo

-{

-   GLfloat x0, y0;        /* start */

-   GLfloat x1, y1;        /* end */

-   GLfloat dx, dy;        /* direction vector */

-   GLfloat len;           /* length */

-   GLfloat halfWidth;     /* half of line width */

-   GLfloat xAdj, yAdj;    /* X and Y adjustment for quad corners around line */

-   /* for coverage computation */

-   GLfloat qx0, qy0;      /* quad vertices */

-   GLfloat qx1, qy1;

-   GLfloat qx2, qy2;

-   GLfloat qx3, qy3;

-   GLfloat ex0, ey0;      /* quad edge vectors */

-   GLfloat ex1, ey1;

-   GLfloat ex2, ey2;

-   GLfloat ex3, ey3;

-

-   /* DO_Z */

-   GLfloat zPlane[4];

-   /* DO_RGBA - always enabled */

-   GLfloat rPlane[4], gPlane[4], bPlane[4], aPlane[4];

-   /* DO_ATTRIBS */

-   GLfloat wPlane[4];

-   GLfloat attrPlane[FRAG_ATTRIB_MAX][4][4];

-   GLfloat lambda[FRAG_ATTRIB_MAX];

-   GLfloat texWidth[FRAG_ATTRIB_MAX];

-   GLfloat texHeight[FRAG_ATTRIB_MAX];

-

-   SWspan span;

-};

-

-

-

-/*

- * Compute the equation of a plane used to interpolate line fragment data

- * such as color, Z, texture coords, etc.

- * Input: (x0, y0) and (x1,y1) are the endpoints of the line.

- *        z0, and z1 are the end point values to interpolate.

- * Output:  plane - the plane equation.

- *

- * Note: we don't really have enough parameters to specify a plane.

- * We take the endpoints of the line and compute a plane such that

- * the cross product of the line vector and the plane normal is

- * parallel to the projection plane.

- */

-static void

-compute_plane(GLfloat x0, GLfloat y0, GLfloat x1, GLfloat y1,

-              GLfloat z0, GLfloat z1, GLfloat plane[4])

-{

-#if 0

-   /* original */

-   const GLfloat px = x1 - x0;

-   const GLfloat py = y1 - y0;

-   const GLfloat pz = z1 - z0;

-   const GLfloat qx = -py;

-   const GLfloat qy = px;

-   const GLfloat qz = 0;

-   const GLfloat a = py * qz - pz * qy;

-   const GLfloat b = pz * qx - px * qz;

-   const GLfloat c = px * qy - py * qx;

-   const GLfloat d = -(a * x0 + b * y0 + c * z0);

-   plane[0] = a;

-   plane[1] = b;

-   plane[2] = c;

-   plane[3] = d;

-#else

-   /* simplified */

-   const GLfloat px = x1 - x0;

-   const GLfloat py = y1 - y0;

-   const GLfloat pz = z0 - z1;

-   const GLfloat a = pz * px;

-   const GLfloat b = pz * py;

-   const GLfloat c = px * px + py * py;

-   const GLfloat d = -(a * x0 + b * y0 + c * z0);

-   if (a == 0.0 && b == 0.0 && c == 0.0 && d == 0.0) {

-      plane[0] = 0.0;

-      plane[1] = 0.0;

-      plane[2] = 1.0;

-      plane[3] = 0.0;

-   }

-   else {

-      plane[0] = a;

-      plane[1] = b;

-      plane[2] = c;

-      plane[3] = d;

-   }

-#endif

-}

-

-

-static INLINE void

-constant_plane(GLfloat value, GLfloat plane[4])

-{

-   plane[0] = 0.0;

-   plane[1] = 0.0;

-   plane[2] = -1.0;

-   plane[3] = value;

-}

-

-

-static INLINE GLfloat

-solve_plane(GLfloat x, GLfloat y, const GLfloat plane[4])

-{

-   const GLfloat z = (plane[3] + plane[0] * x + plane[1] * y) / -plane[2];

-   return z;

-}

-

-#define SOLVE_PLANE(X, Y, PLANE) \

-   ((PLANE[3] + PLANE[0] * (X) + PLANE[1] * (Y)) / -PLANE[2])

-

-

-/*

- * Return 1 / solve_plane().

- */

-static INLINE GLfloat

-solve_plane_recip(GLfloat x, GLfloat y, const GLfloat plane[4])

-{

-   const GLfloat denom = plane[3] + plane[0] * x + plane[1] * y;

-   if (denom == 0.0)

-      return 0.0;

-   else

-      return -plane[2] / denom;

-}

-

-

-/*

- * Solve plane and return clamped GLchan value.

- */

-static INLINE GLchan

-solve_plane_chan(GLfloat x, GLfloat y, const GLfloat plane[4])

-{

-   const GLfloat z = (plane[3] + plane[0] * x + plane[1] * y) / -plane[2];

-#if CHAN_TYPE == GL_FLOAT

-   return CLAMP(z, 0.0F, CHAN_MAXF);

-#else

-   if (z < 0)

-      return 0;

-   else if (z > CHAN_MAX)

-      return CHAN_MAX;

-   return (GLchan) IROUND_POS(z);

-#endif

-}

-

-

-/*

- * Compute mipmap level of detail.

- */

-static INLINE GLfloat

-compute_lambda(const GLfloat sPlane[4], const GLfloat tPlane[4],

-               GLfloat invQ, GLfloat width, GLfloat height)

-{

-   GLfloat dudx = sPlane[0] / sPlane[2] * invQ * width;

-   GLfloat dudy = sPlane[1] / sPlane[2] * invQ * width;

-   GLfloat dvdx = tPlane[0] / tPlane[2] * invQ * height;

-   GLfloat dvdy = tPlane[1] / tPlane[2] * invQ * height;

-   GLfloat r1 = dudx * dudx + dudy * dudy;

-   GLfloat r2 = dvdx * dvdx + dvdy * dvdy;

-   GLfloat rho2 = r1 + r2;

-   /* return log base 2 of rho */

-   if (rho2 == 0.0F)

-      return 0.0;

-   else

-      return (GLfloat) (LOGF(rho2) * 1.442695 * 0.5);/* 1.442695 = 1/log(2) */

-}

-

-

-

-

-/*

- * Fill in the samples[] array with the (x,y) subpixel positions of

- * xSamples * ySamples sample positions.

- * Note that the four corner samples are put into the first four

- * positions of the array.  This allows us to optimize for the common

- * case of all samples being inside the polygon.

- */

-static void

-make_sample_table(GLint xSamples, GLint ySamples, GLfloat samples[][2])

-{

-   const GLfloat dx = 1.0F / (GLfloat) xSamples;

-   const GLfloat dy = 1.0F / (GLfloat) ySamples;

-   GLint x, y;

-   GLint i;

-

-   i = 4;

-   for (x = 0; x < xSamples; x++) {

-      for (y = 0; y < ySamples; y++) {

-         GLint j;

-         if (x == 0 && y == 0) {

-            /* lower left */

-            j = 0;

-         }

-         else if (x == xSamples - 1 && y == 0) {

-            /* lower right */

-            j = 1;

-         }

-         else if (x == 0 && y == ySamples - 1) {

-            /* upper left */

-            j = 2;

-         }

-         else if (x == xSamples - 1 && y == ySamples - 1) {

-            /* upper right */

-            j = 3;

-         }

-         else {

-            j = i++;

-         }

-         samples[j][0] = x * dx + 0.5F * dx;

-         samples[j][1] = y * dy + 0.5F * dy;

-      }

-   }

-}

-

-

-

-/*

- * Compute how much of the given pixel's area is inside the rectangle

- * defined by vertices v0, v1, v2, v3.

- * Vertices MUST be specified in counter-clockwise order.

- * Return:  coverage in [0, 1].

- */

-static GLfloat

-compute_coveragef(const struct LineInfo *info,

-                  GLint winx, GLint winy)

-{

-   static GLfloat samples[SUB_PIXEL * SUB_PIXEL][2];

-   static GLboolean haveSamples = GL_FALSE;

-   const GLfloat x = (GLfloat) winx;

-   const GLfloat y = (GLfloat) winy;

-   GLint stop = 4, i;

-   GLfloat insideCount = SUB_PIXEL * SUB_PIXEL;

-

-   if (!haveSamples) {

-      make_sample_table(SUB_PIXEL, SUB_PIXEL, samples);

-      haveSamples = GL_TRUE;

-   }

-

-#if 0 /*DEBUG*/

-   {

-      const GLfloat area = dx0 * dy1 - dx1 * dy0;

-      assert(area >= 0.0);

-   }

-#endif

-

-   for (i = 0; i < stop; i++) {

-      const GLfloat sx = x + samples[i][0];

-      const GLfloat sy = y + samples[i][1];

-      const GLfloat fx0 = sx - info->qx0;

-      const GLfloat fy0 = sy - info->qy0;

-      const GLfloat fx1 = sx - info->qx1;

-      const GLfloat fy1 = sy - info->qy1;

-      const GLfloat fx2 = sx - info->qx2;

-      const GLfloat fy2 = sy - info->qy2;

-      const GLfloat fx3 = sx - info->qx3;

-      const GLfloat fy3 = sy - info->qy3;

-      /* cross product determines if sample is inside or outside each edge */

-      GLfloat cross0 = (info->ex0 * fy0 - info->ey0 * fx0);

-      GLfloat cross1 = (info->ex1 * fy1 - info->ey1 * fx1);

-      GLfloat cross2 = (info->ex2 * fy2 - info->ey2 * fx2);

-      GLfloat cross3 = (info->ex3 * fy3 - info->ey3 * fx3);

-      /* Check if the sample is exactly on an edge.  If so, let cross be a

-       * positive or negative value depending on the direction of the edge.

-       */

-      if (cross0 == 0.0F)

-         cross0 = info->ex0 + info->ey0;

-      if (cross1 == 0.0F)

-         cross1 = info->ex1 + info->ey1;

-      if (cross2 == 0.0F)

-         cross2 = info->ex2 + info->ey2;

-      if (cross3 == 0.0F)

-         cross3 = info->ex3 + info->ey3;

-      if (cross0 < 0.0F || cross1 < 0.0F || cross2 < 0.0F || cross3 < 0.0F) {

-         /* point is outside quadrilateral */

-         insideCount -= 1.0F;

-         stop = SUB_PIXEL * SUB_PIXEL;

-      }

-   }

-   if (stop == 4)

-      return 1.0F;

-   else

-      return insideCount * (1.0F / (SUB_PIXEL * SUB_PIXEL));

-}

-

-

-typedef void (*plot_func)(struct gl_context *ctx, struct LineInfo *line,

-                          int ix, int iy);

-                         

-

-

-/*

- * Draw an AA line segment (called many times per line when stippling)

- */

-static void

-segment(struct gl_context *ctx,

-        struct LineInfo *line,

-        plot_func plot,

-        GLfloat t0, GLfloat t1)

-{

-   const GLfloat absDx = (line->dx < 0.0F) ? -line->dx : line->dx;

-   const GLfloat absDy = (line->dy < 0.0F) ? -line->dy : line->dy;

-   /* compute the actual segment's endpoints */

-   const GLfloat x0 = line->x0 + t0 * line->dx;

-   const GLfloat y0 = line->y0 + t0 * line->dy;

-   const GLfloat x1 = line->x0 + t1 * line->dx;

-   const GLfloat y1 = line->y0 + t1 * line->dy;

-

-   /* compute vertices of the line-aligned quadrilateral */

-   line->qx0 = x0 - line->yAdj;

-   line->qy0 = y0 + line->xAdj;

-   line->qx1 = x0 + line->yAdj;

-   line->qy1 = y0 - line->xAdj;

-   line->qx2 = x1 + line->yAdj;

-   line->qy2 = y1 - line->xAdj;

-   line->qx3 = x1 - line->yAdj;

-   line->qy3 = y1 + line->xAdj;

-   /* compute the quad's edge vectors (for coverage calc) */

-   line->ex0 = line->qx1 - line->qx0;

-   line->ey0 = line->qy1 - line->qy0;

-   line->ex1 = line->qx2 - line->qx1;

-   line->ey1 = line->qy2 - line->qy1;

-   line->ex2 = line->qx3 - line->qx2;

-   line->ey2 = line->qy3 - line->qy2;

-   line->ex3 = line->qx0 - line->qx3;

-   line->ey3 = line->qy0 - line->qy3;

-

-   if (absDx > absDy) {

-      /* X-major line */

-      GLfloat dydx = line->dy / line->dx;

-      GLfloat xLeft, xRight, yBot, yTop;

-      GLint ix, ixRight;

-      if (x0 < x1) {

-         xLeft = x0 - line->halfWidth;

-         xRight = x1 + line->halfWidth;

-         if (line->dy >= 0.0) {

-            yBot = y0 - 3.0F * line->halfWidth;

-            yTop = y0 + line->halfWidth;

-         }

-         else {

-            yBot = y0 - line->halfWidth;

-            yTop = y0 + 3.0F * line->halfWidth;

-         }

-      }

-      else {

-         xLeft = x1 - line->halfWidth;

-         xRight = x0 + line->halfWidth;

-         if (line->dy <= 0.0) {

-            yBot = y1 - 3.0F * line->halfWidth;

-            yTop = y1 + line->halfWidth;

-         }

-         else {

-            yBot = y1 - line->halfWidth;

-            yTop = y1 + 3.0F * line->halfWidth;

-         }

-      }

-

-      /* scan along the line, left-to-right */

-      ixRight = (GLint) (xRight + 1.0F);

-

-      /*printf("avg span height: %g\n", yTop - yBot);*/

-      for (ix = (GLint) xLeft; ix < ixRight; ix++) {

-         const GLint iyBot = (GLint) yBot;

-         const GLint iyTop = (GLint) (yTop + 1.0F);

-         GLint iy;

-         /* scan across the line, bottom-to-top */

-         for (iy = iyBot; iy < iyTop; iy++) {

-            (*plot)(ctx, line, ix, iy);

-         }

-         yBot += dydx;

-         yTop += dydx;

-      }

-   }

-   else {

-      /* Y-major line */

-      GLfloat dxdy = line->dx / line->dy;

-      GLfloat yBot, yTop, xLeft, xRight;

-      GLint iy, iyTop;

-      if (y0 < y1) {

-         yBot = y0 - line->halfWidth;

-         yTop = y1 + line->halfWidth;

-         if (line->dx >= 0.0) {

-            xLeft = x0 - 3.0F * line->halfWidth;

-            xRight = x0 + line->halfWidth;

-         }

-         else {

-            xLeft = x0 - line->halfWidth;

-            xRight = x0 + 3.0F * line->halfWidth;

-         }

-      }

-      else {

-         yBot = y1 - line->halfWidth;

-         yTop = y0 + line->halfWidth;

-         if (line->dx <= 0.0) {

-            xLeft = x1 - 3.0F * line->halfWidth;

-            xRight = x1 + line->halfWidth;

-         }

-         else {

-            xLeft = x1 - line->halfWidth;

-            xRight = x1 + 3.0F * line->halfWidth;

-         }

-      }

-

-      /* scan along the line, bottom-to-top */

-      iyTop = (GLint) (yTop + 1.0F);

-

-      /*printf("avg span width: %g\n", xRight - xLeft);*/

-      for (iy = (GLint) yBot; iy < iyTop; iy++) {

-         const GLint ixLeft = (GLint) xLeft;

-         const GLint ixRight = (GLint) (xRight + 1.0F);

-         GLint ix;

-         /* scan across the line, left-to-right */

-         for (ix = ixLeft; ix < ixRight; ix++) {

-            (*plot)(ctx, line, ix, iy);

-         }

-         xLeft += dxdy;

-         xRight += dxdy;

-      }

-   }

-}

-

-

-#define NAME(x) aa_rgba_##x

-#define DO_Z

-#include "s_aalinetemp.h"

-

-

-#define NAME(x)  aa_general_rgba_##x

-#define DO_Z

-#define DO_ATTRIBS

-#include "s_aalinetemp.h"

-

-

-

-void

-_swrast_choose_aa_line_function(struct gl_context *ctx)

-{

-   SWcontext *swrast = SWRAST_CONTEXT(ctx);

-

-   ASSERT(ctx->Line.SmoothFlag);

-

-   if (ctx->Texture._EnabledCoordUnits != 0

-       || ctx->FragmentProgram._Current

-       || (ctx->Light.Enabled &&

-           ctx->Light.Model.ColorControl == GL_SEPARATE_SPECULAR_COLOR)

-       || ctx->Fog.ColorSumEnabled

-       || swrast->_FogEnabled) {

-      swrast->Line = aa_general_rgba_line;

-   }

-   else {

-      swrast->Line = aa_rgba_line;

-   }

-}

+/*
+ * Mesa 3-D graphics library
+ * Version:  6.5.3
+ *
+ * Copyright (C) 1999-2007  Brian Paul   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+
+#include "main/glheader.h"
+#include "main/imports.h"
+#include "main/macros.h"
+#include "main/mtypes.h"
+#include "swrast/s_aaline.h"
+#include "swrast/s_context.h"
+#include "swrast/s_span.h"
+#include "swrast/swrast.h"
+
+
+#define SUB_PIXEL 4
+
+
+/*
+ * Info about the AA line we're rendering
+ */
+struct LineInfo
+{
+   GLfloat x0, y0;        /* start */
+   GLfloat x1, y1;        /* end */
+   GLfloat dx, dy;        /* direction vector */
+   GLfloat len;           /* length */
+   GLfloat halfWidth;     /* half of line width */
+   GLfloat xAdj, yAdj;    /* X and Y adjustment for quad corners around line */
+   /* for coverage computation */
+   GLfloat qx0, qy0;      /* quad vertices */
+   GLfloat qx1, qy1;
+   GLfloat qx2, qy2;
+   GLfloat qx3, qy3;
+   GLfloat ex0, ey0;      /* quad edge vectors */
+   GLfloat ex1, ey1;
+   GLfloat ex2, ey2;
+   GLfloat ex3, ey3;
+
+   /* DO_Z */
+   GLfloat zPlane[4];
+   /* DO_RGBA - always enabled */
+   GLfloat rPlane[4], gPlane[4], bPlane[4], aPlane[4];
+   /* DO_ATTRIBS */
+   GLfloat wPlane[4];
+   GLfloat attrPlane[FRAG_ATTRIB_MAX][4][4];
+   GLfloat lambda[FRAG_ATTRIB_MAX];
+   GLfloat texWidth[FRAG_ATTRIB_MAX];
+   GLfloat texHeight[FRAG_ATTRIB_MAX];
+
+   SWspan span;
+};
+
+
+
+/*
+ * Compute the equation of a plane used to interpolate line fragment data
+ * such as color, Z, texture coords, etc.
+ * Input: (x0, y0) and (x1,y1) are the endpoints of the line.
+ *        z0, and z1 are the end point values to interpolate.
+ * Output:  plane - the plane equation.
+ *
+ * Note: we don't really have enough parameters to specify a plane.
+ * We take the endpoints of the line and compute a plane such that
+ * the cross product of the line vector and the plane normal is
+ * parallel to the projection plane.
+ */
+static void
+compute_plane(GLfloat x0, GLfloat y0, GLfloat x1, GLfloat y1,
+              GLfloat z0, GLfloat z1, GLfloat plane[4])
+{
+#if 0
+   /* original */
+   const GLfloat px = x1 - x0;
+   const GLfloat py = y1 - y0;
+   const GLfloat pz = z1 - z0;
+   const GLfloat qx = -py;
+   const GLfloat qy = px;
+   const GLfloat qz = 0;
+   const GLfloat a = py * qz - pz * qy;
+   const GLfloat b = pz * qx - px * qz;
+   const GLfloat c = px * qy - py * qx;
+   const GLfloat d = -(a * x0 + b * y0 + c * z0);
+   plane[0] = a;
+   plane[1] = b;
+   plane[2] = c;
+   plane[3] = d;
+#else
+   /* simplified */
+   const GLfloat px = x1 - x0;
+   const GLfloat py = y1 - y0;
+   const GLfloat pz = z0 - z1;
+   const GLfloat a = pz * px;
+   const GLfloat b = pz * py;
+   const GLfloat c = px * px + py * py;
+   const GLfloat d = -(a * x0 + b * y0 + c * z0);
+   if (a == 0.0 && b == 0.0 && c == 0.0 && d == 0.0) {
+      plane[0] = 0.0;
+      plane[1] = 0.0;
+      plane[2] = 1.0;
+      plane[3] = 0.0;
+   }
+   else {
+      plane[0] = a;
+      plane[1] = b;
+      plane[2] = c;
+      plane[3] = d;
+   }
+#endif
+}
+
+
+static inline void
+constant_plane(GLfloat value, GLfloat plane[4])
+{
+   plane[0] = 0.0;
+   plane[1] = 0.0;
+   plane[2] = -1.0;
+   plane[3] = value;
+}
+
+
+static inline GLfloat
+solve_plane(GLfloat x, GLfloat y, const GLfloat plane[4])
+{
+   const GLfloat z = (plane[3] + plane[0] * x + plane[1] * y) / -plane[2];
+   return z;
+}
+
+#define SOLVE_PLANE(X, Y, PLANE) \
+   ((PLANE[3] + PLANE[0] * (X) + PLANE[1] * (Y)) / -PLANE[2])
+
+
+/*
+ * Return 1 / solve_plane().
+ */
+static inline GLfloat
+solve_plane_recip(GLfloat x, GLfloat y, const GLfloat plane[4])
+{
+   const GLfloat denom = plane[3] + plane[0] * x + plane[1] * y;
+   if (denom == 0.0)
+      return 0.0;
+   else
+      return -plane[2] / denom;
+}
+
+
+/*
+ * Solve plane and return clamped GLchan value.
+ */
+static inline GLchan
+solve_plane_chan(GLfloat x, GLfloat y, const GLfloat plane[4])
+{
+   const GLfloat z = (plane[3] + plane[0] * x + plane[1] * y) / -plane[2];
+#if CHAN_TYPE == GL_FLOAT
+   return CLAMP(z, 0.0F, CHAN_MAXF);
+#else
+   if (z < 0)
+      return 0;
+   else if (z > CHAN_MAX)
+      return CHAN_MAX;
+   return (GLchan) IROUND_POS(z);
+#endif
+}
+
+
+/*
+ * Compute mipmap level of detail.
+ */
+static inline GLfloat
+compute_lambda(const GLfloat sPlane[4], const GLfloat tPlane[4],
+               GLfloat invQ, GLfloat width, GLfloat height)
+{
+   GLfloat dudx = sPlane[0] / sPlane[2] * invQ * width;
+   GLfloat dudy = sPlane[1] / sPlane[2] * invQ * width;
+   GLfloat dvdx = tPlane[0] / tPlane[2] * invQ * height;
+   GLfloat dvdy = tPlane[1] / tPlane[2] * invQ * height;
+   GLfloat r1 = dudx * dudx + dudy * dudy;
+   GLfloat r2 = dvdx * dvdx + dvdy * dvdy;
+   GLfloat rho2 = r1 + r2;
+   /* return log base 2 of rho */
+   if (rho2 == 0.0F)
+      return 0.0;
+   else
+      return (GLfloat) (LOGF(rho2) * 1.442695 * 0.5);/* 1.442695 = 1/log(2) */
+}
+
+
+
+
+/*
+ * Fill in the samples[] array with the (x,y) subpixel positions of
+ * xSamples * ySamples sample positions.
+ * Note that the four corner samples are put into the first four
+ * positions of the array.  This allows us to optimize for the common
+ * case of all samples being inside the polygon.
+ */
+static void
+make_sample_table(GLint xSamples, GLint ySamples, GLfloat samples[][2])
+{
+   const GLfloat dx = 1.0F / (GLfloat) xSamples;
+   const GLfloat dy = 1.0F / (GLfloat) ySamples;
+   GLint x, y;
+   GLint i;
+
+   i = 4;
+   for (x = 0; x < xSamples; x++) {
+      for (y = 0; y < ySamples; y++) {
+         GLint j;
+         if (x == 0 && y == 0) {
+            /* lower left */
+            j = 0;
+         }
+         else if (x == xSamples - 1 && y == 0) {
+            /* lower right */
+            j = 1;
+         }
+         else if (x == 0 && y == ySamples - 1) {
+            /* upper left */
+            j = 2;
+         }
+         else if (x == xSamples - 1 && y == ySamples - 1) {
+            /* upper right */
+            j = 3;
+         }
+         else {
+            j = i++;
+         }
+         samples[j][0] = x * dx + 0.5F * dx;
+         samples[j][1] = y * dy + 0.5F * dy;
+      }
+   }
+}
+
+
+
+/*
+ * Compute how much of the given pixel's area is inside the rectangle
+ * defined by vertices v0, v1, v2, v3.
+ * Vertices MUST be specified in counter-clockwise order.
+ * Return:  coverage in [0, 1].
+ */
+static GLfloat
+compute_coveragef(const struct LineInfo *info,
+                  GLint winx, GLint winy)
+{
+   static GLfloat samples[SUB_PIXEL * SUB_PIXEL][2];
+   static GLboolean haveSamples = GL_FALSE;
+   const GLfloat x = (GLfloat) winx;
+   const GLfloat y = (GLfloat) winy;
+   GLint stop = 4, i;
+   GLfloat insideCount = SUB_PIXEL * SUB_PIXEL;
+
+   if (!haveSamples) {
+      make_sample_table(SUB_PIXEL, SUB_PIXEL, samples);
+      haveSamples = GL_TRUE;
+   }
+
+#if 0 /*DEBUG*/
+   {
+      const GLfloat area = dx0 * dy1 - dx1 * dy0;
+      assert(area >= 0.0);
+   }
+#endif
+
+   for (i = 0; i < stop; i++) {
+      const GLfloat sx = x + samples[i][0];
+      const GLfloat sy = y + samples[i][1];
+      const GLfloat fx0 = sx - info->qx0;
+      const GLfloat fy0 = sy - info->qy0;
+      const GLfloat fx1 = sx - info->qx1;
+      const GLfloat fy1 = sy - info->qy1;
+      const GLfloat fx2 = sx - info->qx2;
+      const GLfloat fy2 = sy - info->qy2;
+      const GLfloat fx3 = sx - info->qx3;
+      const GLfloat fy3 = sy - info->qy3;
+      /* cross product determines if sample is inside or outside each edge */
+      GLfloat cross0 = (info->ex0 * fy0 - info->ey0 * fx0);
+      GLfloat cross1 = (info->ex1 * fy1 - info->ey1 * fx1);
+      GLfloat cross2 = (info->ex2 * fy2 - info->ey2 * fx2);
+      GLfloat cross3 = (info->ex3 * fy3 - info->ey3 * fx3);
+      /* Check if the sample is exactly on an edge.  If so, let cross be a
+       * positive or negative value depending on the direction of the edge.
+       */
+      if (cross0 == 0.0F)
+         cross0 = info->ex0 + info->ey0;
+      if (cross1 == 0.0F)
+         cross1 = info->ex1 + info->ey1;
+      if (cross2 == 0.0F)
+         cross2 = info->ex2 + info->ey2;
+      if (cross3 == 0.0F)
+         cross3 = info->ex3 + info->ey3;
+      if (cross0 < 0.0F || cross1 < 0.0F || cross2 < 0.0F || cross3 < 0.0F) {
+         /* point is outside quadrilateral */
+         insideCount -= 1.0F;
+         stop = SUB_PIXEL * SUB_PIXEL;
+      }
+   }
+   if (stop == 4)
+      return 1.0F;
+   else
+      return insideCount * (1.0F / (SUB_PIXEL * SUB_PIXEL));
+}
+
+
+typedef void (*plot_func)(struct gl_context *ctx, struct LineInfo *line,
+                          int ix, int iy);
+                         
+
+
+/*
+ * Draw an AA line segment (called many times per line when stippling)
+ */
+static void
+segment(struct gl_context *ctx,
+        struct LineInfo *line,
+        plot_func plot,
+        GLfloat t0, GLfloat t1)
+{
+   const GLfloat absDx = (line->dx < 0.0F) ? -line->dx : line->dx;
+   const GLfloat absDy = (line->dy < 0.0F) ? -line->dy : line->dy;
+   /* compute the actual segment's endpoints */
+   const GLfloat x0 = line->x0 + t0 * line->dx;
+   const GLfloat y0 = line->y0 + t0 * line->dy;
+   const GLfloat x1 = line->x0 + t1 * line->dx;
+   const GLfloat y1 = line->y0 + t1 * line->dy;
+
+   /* compute vertices of the line-aligned quadrilateral */
+   line->qx0 = x0 - line->yAdj;
+   line->qy0 = y0 + line->xAdj;
+   line->qx1 = x0 + line->yAdj;
+   line->qy1 = y0 - line->xAdj;
+   line->qx2 = x1 + line->yAdj;
+   line->qy2 = y1 - line->xAdj;
+   line->qx3 = x1 - line->yAdj;
+   line->qy3 = y1 + line->xAdj;
+   /* compute the quad's edge vectors (for coverage calc) */
+   line->ex0 = line->qx1 - line->qx0;
+   line->ey0 = line->qy1 - line->qy0;
+   line->ex1 = line->qx2 - line->qx1;
+   line->ey1 = line->qy2 - line->qy1;
+   line->ex2 = line->qx3 - line->qx2;
+   line->ey2 = line->qy3 - line->qy2;
+   line->ex3 = line->qx0 - line->qx3;
+   line->ey3 = line->qy0 - line->qy3;
+
+   if (absDx > absDy) {
+      /* X-major line */
+      GLfloat dydx = line->dy / line->dx;
+      GLfloat xLeft, xRight, yBot, yTop;
+      GLint ix, ixRight;
+      if (x0 < x1) {
+         xLeft = x0 - line->halfWidth;
+         xRight = x1 + line->halfWidth;
+         if (line->dy >= 0.0) {
+            yBot = y0 - 3.0F * line->halfWidth;
+            yTop = y0 + line->halfWidth;
+         }
+         else {
+            yBot = y0 - line->halfWidth;
+            yTop = y0 + 3.0F * line->halfWidth;
+         }
+      }
+      else {
+         xLeft = x1 - line->halfWidth;
+         xRight = x0 + line->halfWidth;
+         if (line->dy <= 0.0) {
+            yBot = y1 - 3.0F * line->halfWidth;
+            yTop = y1 + line->halfWidth;
+         }
+         else {
+            yBot = y1 - line->halfWidth;
+            yTop = y1 + 3.0F * line->halfWidth;
+         }
+      }
+
+      /* scan along the line, left-to-right */
+      ixRight = (GLint) (xRight + 1.0F);
+
+      /*printf("avg span height: %g\n", yTop - yBot);*/
+      for (ix = (GLint) xLeft; ix < ixRight; ix++) {
+         const GLint iyBot = (GLint) yBot;
+         const GLint iyTop = (GLint) (yTop + 1.0F);
+         GLint iy;
+         /* scan across the line, bottom-to-top */
+         for (iy = iyBot; iy < iyTop; iy++) {
+            (*plot)(ctx, line, ix, iy);
+         }
+         yBot += dydx;
+         yTop += dydx;
+      }
+   }
+   else {
+      /* Y-major line */
+      GLfloat dxdy = line->dx / line->dy;
+      GLfloat yBot, yTop, xLeft, xRight;
+      GLint iy, iyTop;
+      if (y0 < y1) {
+         yBot = y0 - line->halfWidth;
+         yTop = y1 + line->halfWidth;
+         if (line->dx >= 0.0) {
+            xLeft = x0 - 3.0F * line->halfWidth;
+            xRight = x0 + line->halfWidth;
+         }
+         else {
+            xLeft = x0 - line->halfWidth;
+            xRight = x0 + 3.0F * line->halfWidth;
+         }
+      }
+      else {
+         yBot = y1 - line->halfWidth;
+         yTop = y0 + line->halfWidth;
+         if (line->dx <= 0.0) {
+            xLeft = x1 - 3.0F * line->halfWidth;
+            xRight = x1 + line->halfWidth;
+         }
+         else {
+            xLeft = x1 - line->halfWidth;
+            xRight = x1 + 3.0F * line->halfWidth;
+         }
+      }
+
+      /* scan along the line, bottom-to-top */
+      iyTop = (GLint) (yTop + 1.0F);
+
+      /*printf("avg span width: %g\n", xRight - xLeft);*/
+      for (iy = (GLint) yBot; iy < iyTop; iy++) {
+         const GLint ixLeft = (GLint) xLeft;
+         const GLint ixRight = (GLint) (xRight + 1.0F);
+         GLint ix;
+         /* scan across the line, left-to-right */
+         for (ix = ixLeft; ix < ixRight; ix++) {
+            (*plot)(ctx, line, ix, iy);
+         }
+         xLeft += dxdy;
+         xRight += dxdy;
+      }
+   }
+}
+
+
+#define NAME(x) aa_rgba_##x
+#define DO_Z
+#include "s_aalinetemp.h"
+
+
+#define NAME(x)  aa_general_rgba_##x
+#define DO_Z
+#define DO_ATTRIBS
+#include "s_aalinetemp.h"
+
+
+
+void
+_swrast_choose_aa_line_function(struct gl_context *ctx)
+{
+   SWcontext *swrast = SWRAST_CONTEXT(ctx);
+
+   ASSERT(ctx->Line.SmoothFlag);
+
+   if (ctx->Texture._EnabledCoordUnits != 0
+       || ctx->FragmentProgram._Current
+       || (ctx->Light.Enabled &&
+           ctx->Light.Model.ColorControl == GL_SEPARATE_SPECULAR_COLOR)
+       || ctx->Fog.ColorSumEnabled
+       || swrast->_FogEnabled) {
+      swrast->Line = aa_general_rgba_line;
+   }
+   else {
+      swrast->Line = aa_rgba_line;
+   }
+}
diff --git a/mesalib/src/mesa/swrast/s_aatriangle.c b/mesalib/src/mesa/swrast/s_aatriangle.c
index ad068d0c0..c68fdf63b 100644
--- a/mesalib/src/mesa/swrast/s_aatriangle.c
+++ b/mesalib/src/mesa/swrast/s_aatriangle.c
@@ -1,312 +1,312 @@
-/*

- * Mesa 3-D graphics library

- * Version:  6.5.3

- *

- * Copyright (C) 1999-2007  Brian Paul   All Rights Reserved.

- *

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the "Software"),

- * to deal in the Software without restriction, including without limitation

- * the rights to use, copy, modify, merge, publish, distribute, sublicense,

- * and/or sell copies of the Software, and to permit persons to whom the

- * Software is furnished to do so, subject to the following conditions:

- *

- * The above copyright notice and this permission notice shall be included

- * in all copies or substantial portions of the Software.

- *

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

- */

-

-

-/*

- * Antialiased Triangle rasterizers

- */

-

-

-#include "main/glheader.h"

-#include "main/context.h"

-#include "main/colormac.h"

-#include "main/macros.h"

-#include "main/imports.h"

-#include "main/state.h"

-#include "s_aatriangle.h"

-#include "s_context.h"

-#include "s_span.h"

-

-

-/*

- * Compute coefficients of a plane using the X,Y coords of the v0, v1, v2

- * vertices and the given Z values.

- * A point (x,y,z) lies on plane iff a*x+b*y+c*z+d = 0.

- */

-static INLINE void

-compute_plane(const GLfloat v0[], const GLfloat v1[], const GLfloat v2[],

-              GLfloat z0, GLfloat z1, GLfloat z2, GLfloat plane[4])

-{

-   const GLfloat px = v1[0] - v0[0];

-   const GLfloat py = v1[1] - v0[1];

-   const GLfloat pz = z1 - z0;

-

-   const GLfloat qx = v2[0] - v0[0];

-   const GLfloat qy = v2[1] - v0[1];

-   const GLfloat qz = z2 - z0;

-

-   /* Crossproduct "(a,b,c):= dv1 x dv2" is orthogonal to plane. */

-   const GLfloat a = py * qz - pz * qy;

-   const GLfloat b = pz * qx - px * qz;

-   const GLfloat c = px * qy - py * qx;

-   /* Point on the plane = "r*(a,b,c) + w", with fixed "r" depending

-      on the distance of plane from origin and arbitrary "w" parallel

-      to the plane. */

-   /* The scalar product "(r*(a,b,c)+w)*(a,b,c)" is "r*(a^2+b^2+c^2)",

-      which is equal to "-d" below. */

-   const GLfloat d = -(a * v0[0] + b * v0[1] + c * z0);

-

-   plane[0] = a;

-   plane[1] = b;

-   plane[2] = c;

-   plane[3] = d;

-}

-

-

-/*

- * Compute coefficients of a plane with a constant Z value.

- */

-static INLINE void

-constant_plane(GLfloat value, GLfloat plane[4])

-{

-   plane[0] = 0.0;

-   plane[1] = 0.0;

-   plane[2] = -1.0;

-   plane[3] = value;

-}

-

-#define CONSTANT_PLANE(VALUE, PLANE)	\

-do {					\

-   PLANE[0] = 0.0F;			\

-   PLANE[1] = 0.0F;			\

-   PLANE[2] = -1.0F;			\

-   PLANE[3] = VALUE;			\

-} while (0)

-

-

-

-/*

- * Solve plane equation for Z at (X,Y).

- */

-static INLINE GLfloat

-solve_plane(GLfloat x, GLfloat y, const GLfloat plane[4])

-{

-   ASSERT(plane[2] != 0.0F);

-   return (plane[3] + plane[0] * x + plane[1] * y) / -plane[2];

-}

-

-

-#define SOLVE_PLANE(X, Y, PLANE) \

-   ((PLANE[3] + PLANE[0] * (X) + PLANE[1] * (Y)) / -PLANE[2])

-

-

-/*

- * Return 1 / solve_plane().

- */

-static INLINE GLfloat

-solve_plane_recip(GLfloat x, GLfloat y, const GLfloat plane[4])

-{

-   const GLfloat denom = plane[3] + plane[0] * x + plane[1] * y;

-   if (denom == 0.0F)

-      return 0.0F;

-   else

-      return -plane[2] / denom;

-}

-

-

-/*

- * Solve plane and return clamped GLchan value.

- */

-static INLINE GLchan

-solve_plane_chan(GLfloat x, GLfloat y, const GLfloat plane[4])

-{

-   const GLfloat z = (plane[3] + plane[0] * x + plane[1] * y) / -plane[2];

-#if CHAN_TYPE == GL_FLOAT

-   return CLAMP(z, 0.0F, CHAN_MAXF);

-#else

-   if (z < 0)

-      return 0;

-   else if (z > CHAN_MAX)

-      return CHAN_MAX;

-   return (GLchan) IROUND_POS(z);

-#endif

-}

-

-

-static INLINE GLfloat

-plane_dx(const GLfloat plane[4])

-{

-   return -plane[0] / plane[2];

-}

-

-static INLINE GLfloat

-plane_dy(const GLfloat plane[4])

-{

-   return -plane[1] / plane[2];

-}

-

-

-

-/*

- * Compute how much (area) of the given pixel is inside the triangle.

- * Vertices MUST be specified in counter-clockwise order.

- * Return:  coverage in [0, 1].

- */

-static GLfloat

-compute_coveragef(const GLfloat v0[3], const GLfloat v1[3],

-                  const GLfloat v2[3], GLint winx, GLint winy)

-{

-   /* Given a position [0,3]x[0,3] return the sub-pixel sample position.

-    * Contributed by Ray Tice.

-    *

-    * Jitter sample positions -

-    * - average should be .5 in x & y for each column

-    * - each of the 16 rows and columns should be used once

-    * - the rectangle formed by the first four points

-    *   should contain the other points

-    * - the distrubition should be fairly even in any given direction

-    *

-    * The pattern drawn below isn't optimal, but it's better than a regular

-    * grid.  In the drawing, the center of each subpixel is surrounded by

-    * four dots.  The "x" marks the jittered position relative to the

-    * subpixel center.

-    */

-#define POS(a, b) (0.5+a*4+b)/16

-   static const GLfloat samples[16][2] = {

-      /* start with the four corners */

-      { POS(0, 2), POS(0, 0) },

-      { POS(3, 3), POS(0, 2) },

-      { POS(0, 0), POS(3, 1) },

-      { POS(3, 1), POS(3, 3) },

-      /* continue with interior samples */

-      { POS(1, 1), POS(0, 1) },

-      { POS(2, 0), POS(0, 3) },

-      { POS(0, 3), POS(1, 3) },

-      { POS(1, 2), POS(1, 0) },

-      { POS(2, 3), POS(1, 2) },

-      { POS(3, 2), POS(1, 1) },

-      { POS(0, 1), POS(2, 2) },

-      { POS(1, 0), POS(2, 1) },

-      { POS(2, 1), POS(2, 3) },

-      { POS(3, 0), POS(2, 0) },

-      { POS(1, 3), POS(3, 0) },

-      { POS(2, 2), POS(3, 2) }

-   };

-

-   const GLfloat x = (GLfloat) winx;

-   const GLfloat y = (GLfloat) winy;

-   const GLfloat dx0 = v1[0] - v0[0];

-   const GLfloat dy0 = v1[1] - v0[1];

-   const GLfloat dx1 = v2[0] - v1[0];

-   const GLfloat dy1 = v2[1] - v1[1];

-   const GLfloat dx2 = v0[0] - v2[0];

-   const GLfloat dy2 = v0[1] - v2[1];

-   GLint stop = 4, i;

-   GLfloat insideCount = 16.0F;

-

-   ASSERT(dx0 * dy1 - dx1 * dy0 >= 0.0); /* area >= 0.0 */

-

-   for (i = 0; i < stop; i++) {

-      const GLfloat sx = x + samples[i][0];

-      const GLfloat sy = y + samples[i][1];

-      /* cross product determines if sample is inside or outside each edge */

-      GLfloat cross = (dx0 * (sy - v0[1]) - dy0 * (sx - v0[0]));

-      /* Check if the sample is exactly on an edge.  If so, let cross be a

-       * positive or negative value depending on the direction of the edge.

-       */

-      if (cross == 0.0F)

-         cross = dx0 + dy0;

-      if (cross < 0.0F) {

-         /* sample point is outside first edge */

-         insideCount -= 1.0F;

-         stop = 16;

-      }

-      else {

-         /* sample point is inside first edge */

-         cross = (dx1 * (sy - v1[1]) - dy1 * (sx - v1[0]));

-         if (cross == 0.0F)

-            cross = dx1 + dy1;

-         if (cross < 0.0F) {

-            /* sample point is outside second edge */

-            insideCount -= 1.0F;

-            stop = 16;

-         }

-         else {

-            /* sample point is inside first and second edges */

-            cross = (dx2 * (sy - v2[1]) -  dy2 * (sx - v2[0]));

-            if (cross == 0.0F)

-               cross = dx2 + dy2;

-            if (cross < 0.0F) {

-               /* sample point is outside third edge */

-               insideCount -= 1.0F;

-               stop = 16;

-            }

-         }

-      }

-   }

-   if (stop == 4)

-      return 1.0F;

-   else

-      return insideCount * (1.0F / 16.0F);

-}

-

-

-

-static void

-rgba_aa_tri(struct gl_context *ctx,

-	    const SWvertex *v0,

-	    const SWvertex *v1,

-	    const SWvertex *v2)

-{

-#define DO_Z

-#include "s_aatritemp.h"

-}

-

-

-static void

-general_aa_tri(struct gl_context *ctx,

-               const SWvertex *v0,

-               const SWvertex *v1,

-               const SWvertex *v2)

-{

-#define DO_Z

-#define DO_ATTRIBS

-#include "s_aatritemp.h"

-}

-

-

-

-/*

- * Examine GL state and set swrast->Triangle to an

- * appropriate antialiased triangle rasterizer function.

- */

-void

-_swrast_set_aa_triangle_function(struct gl_context *ctx)

-{

-   SWcontext *swrast = SWRAST_CONTEXT(ctx);

-

-   ASSERT(ctx->Polygon.SmoothFlag);

-

-   if (ctx->Texture._EnabledCoordUnits != 0

-       || ctx->FragmentProgram._Current

-       || swrast->_FogEnabled

-       || _mesa_need_secondary_color(ctx)) {

-      SWRAST_CONTEXT(ctx)->Triangle = general_aa_tri;

-   }

-   else {

-      SWRAST_CONTEXT(ctx)->Triangle = rgba_aa_tri;

-   }

-

-   ASSERT(SWRAST_CONTEXT(ctx)->Triangle);

-}

+/*
+ * Mesa 3-D graphics library
+ * Version:  6.5.3
+ *
+ * Copyright (C) 1999-2007  Brian Paul   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+
+/*
+ * Antialiased Triangle rasterizers
+ */
+
+
+#include "main/glheader.h"
+#include "main/context.h"
+#include "main/colormac.h"
+#include "main/macros.h"
+#include "main/imports.h"
+#include "main/state.h"
+#include "s_aatriangle.h"
+#include "s_context.h"
+#include "s_span.h"
+
+
+/*
+ * Compute coefficients of a plane using the X,Y coords of the v0, v1, v2
+ * vertices and the given Z values.
+ * A point (x,y,z) lies on plane iff a*x+b*y+c*z+d = 0.
+ */
+static inline void
+compute_plane(const GLfloat v0[], const GLfloat v1[], const GLfloat v2[],
+              GLfloat z0, GLfloat z1, GLfloat z2, GLfloat plane[4])
+{
+   const GLfloat px = v1[0] - v0[0];
+   const GLfloat py = v1[1] - v0[1];
+   const GLfloat pz = z1 - z0;
+
+   const GLfloat qx = v2[0] - v0[0];
+   const GLfloat qy = v2[1] - v0[1];
+   const GLfloat qz = z2 - z0;
+
+   /* Crossproduct "(a,b,c):= dv1 x dv2" is orthogonal to plane. */
+   const GLfloat a = py * qz - pz * qy;
+   const GLfloat b = pz * qx - px * qz;
+   const GLfloat c = px * qy - py * qx;
+   /* Point on the plane = "r*(a,b,c) + w", with fixed "r" depending
+      on the distance of plane from origin and arbitrary "w" parallel
+      to the plane. */
+   /* The scalar product "(r*(a,b,c)+w)*(a,b,c)" is "r*(a^2+b^2+c^2)",
+      which is equal to "-d" below. */
+   const GLfloat d = -(a * v0[0] + b * v0[1] + c * z0);
+
+   plane[0] = a;
+   plane[1] = b;
+   plane[2] = c;
+   plane[3] = d;
+}
+
+
+/*
+ * Compute coefficients of a plane with a constant Z value.
+ */
+static inline void
+constant_plane(GLfloat value, GLfloat plane[4])
+{
+   plane[0] = 0.0;
+   plane[1] = 0.0;
+   plane[2] = -1.0;
+   plane[3] = value;
+}
+
+#define CONSTANT_PLANE(VALUE, PLANE)	\
+do {					\
+   PLANE[0] = 0.0F;			\
+   PLANE[1] = 0.0F;			\
+   PLANE[2] = -1.0F;			\
+   PLANE[3] = VALUE;			\
+} while (0)
+
+
+
+/*
+ * Solve plane equation for Z at (X,Y).
+ */
+static inline GLfloat
+solve_plane(GLfloat x, GLfloat y, const GLfloat plane[4])
+{
+   ASSERT(plane[2] != 0.0F);
+   return (plane[3] + plane[0] * x + plane[1] * y) / -plane[2];
+}
+
+
+#define SOLVE_PLANE(X, Y, PLANE) \
+   ((PLANE[3] + PLANE[0] * (X) + PLANE[1] * (Y)) / -PLANE[2])
+
+
+/*
+ * Return 1 / solve_plane().
+ */
+static inline GLfloat
+solve_plane_recip(GLfloat x, GLfloat y, const GLfloat plane[4])
+{
+   const GLfloat denom = plane[3] + plane[0] * x + plane[1] * y;
+   if (denom == 0.0F)
+      return 0.0F;
+   else
+      return -plane[2] / denom;
+}
+
+
+/*
+ * Solve plane and return clamped GLchan value.
+ */
+static inline GLchan
+solve_plane_chan(GLfloat x, GLfloat y, const GLfloat plane[4])
+{
+   const GLfloat z = (plane[3] + plane[0] * x + plane[1] * y) / -plane[2];
+#if CHAN_TYPE == GL_FLOAT
+   return CLAMP(z, 0.0F, CHAN_MAXF);
+#else
+   if (z < 0)
+      return 0;
+   else if (z > CHAN_MAX)
+      return CHAN_MAX;
+   return (GLchan) IROUND_POS(z);
+#endif
+}
+
+
+static inline GLfloat
+plane_dx(const GLfloat plane[4])
+{
+   return -plane[0] / plane[2];
+}
+
+static inline GLfloat
+plane_dy(const GLfloat plane[4])
+{
+   return -plane[1] / plane[2];
+}
+
+
+
+/*
+ * Compute how much (area) of the given pixel is inside the triangle.
+ * Vertices MUST be specified in counter-clockwise order.
+ * Return:  coverage in [0, 1].
+ */
+static GLfloat
+compute_coveragef(const GLfloat v0[3], const GLfloat v1[3],
+                  const GLfloat v2[3], GLint winx, GLint winy)
+{
+   /* Given a position [0,3]x[0,3] return the sub-pixel sample position.
+    * Contributed by Ray Tice.
+    *
+    * Jitter sample positions -
+    * - average should be .5 in x & y for each column
+    * - each of the 16 rows and columns should be used once
+    * - the rectangle formed by the first four points
+    *   should contain the other points
+    * - the distrubition should be fairly even in any given direction
+    *
+    * The pattern drawn below isn't optimal, but it's better than a regular
+    * grid.  In the drawing, the center of each subpixel is surrounded by
+    * four dots.  The "x" marks the jittered position relative to the
+    * subpixel center.
+    */
+#define POS(a, b) (0.5+a*4+b)/16
+   static const GLfloat samples[16][2] = {
+      /* start with the four corners */
+      { POS(0, 2), POS(0, 0) },
+      { POS(3, 3), POS(0, 2) },
+      { POS(0, 0), POS(3, 1) },
+      { POS(3, 1), POS(3, 3) },
+      /* continue with interior samples */
+      { POS(1, 1), POS(0, 1) },
+      { POS(2, 0), POS(0, 3) },
+      { POS(0, 3), POS(1, 3) },
+      { POS(1, 2), POS(1, 0) },
+      { POS(2, 3), POS(1, 2) },
+      { POS(3, 2), POS(1, 1) },
+      { POS(0, 1), POS(2, 2) },
+      { POS(1, 0), POS(2, 1) },
+      { POS(2, 1), POS(2, 3) },
+      { POS(3, 0), POS(2, 0) },
+      { POS(1, 3), POS(3, 0) },
+      { POS(2, 2), POS(3, 2) }
+   };
+
+   const GLfloat x = (GLfloat) winx;
+   const GLfloat y = (GLfloat) winy;
+   const GLfloat dx0 = v1[0] - v0[0];
+   const GLfloat dy0 = v1[1] - v0[1];
+   const GLfloat dx1 = v2[0] - v1[0];
+   const GLfloat dy1 = v2[1] - v1[1];
+   const GLfloat dx2 = v0[0] - v2[0];
+   const GLfloat dy2 = v0[1] - v2[1];
+   GLint stop = 4, i;
+   GLfloat insideCount = 16.0F;
+
+   ASSERT(dx0 * dy1 - dx1 * dy0 >= 0.0); /* area >= 0.0 */
+
+   for (i = 0; i < stop; i++) {
+      const GLfloat sx = x + samples[i][0];
+      const GLfloat sy = y + samples[i][1];
+      /* cross product determines if sample is inside or outside each edge */
+      GLfloat cross = (dx0 * (sy - v0[1]) - dy0 * (sx - v0[0]));
+      /* Check if the sample is exactly on an edge.  If so, let cross be a
+       * positive or negative value depending on the direction of the edge.
+       */
+      if (cross == 0.0F)
+         cross = dx0 + dy0;
+      if (cross < 0.0F) {
+         /* sample point is outside first edge */
+         insideCount -= 1.0F;
+         stop = 16;
+      }
+      else {
+         /* sample point is inside first edge */
+         cross = (dx1 * (sy - v1[1]) - dy1 * (sx - v1[0]));
+         if (cross == 0.0F)
+            cross = dx1 + dy1;
+         if (cross < 0.0F) {
+            /* sample point is outside second edge */
+            insideCount -= 1.0F;
+            stop = 16;
+         }
+         else {
+            /* sample point is inside first and second edges */
+            cross = (dx2 * (sy - v2[1]) -  dy2 * (sx - v2[0]));
+            if (cross == 0.0F)
+               cross = dx2 + dy2;
+            if (cross < 0.0F) {
+               /* sample point is outside third edge */
+               insideCount -= 1.0F;
+               stop = 16;
+            }
+         }
+      }
+   }
+   if (stop == 4)
+      return 1.0F;
+   else
+      return insideCount * (1.0F / 16.0F);
+}
+
+
+
+static void
+rgba_aa_tri(struct gl_context *ctx,
+	    const SWvertex *v0,
+	    const SWvertex *v1,
+	    const SWvertex *v2)
+{
+#define DO_Z
+#include "s_aatritemp.h"
+}
+
+
+static void
+general_aa_tri(struct gl_context *ctx,
+               const SWvertex *v0,
+               const SWvertex *v1,
+               const SWvertex *v2)
+{
+#define DO_Z
+#define DO_ATTRIBS
+#include "s_aatritemp.h"
+}
+
+
+
+/*
+ * Examine GL state and set swrast->Triangle to an
+ * appropriate antialiased triangle rasterizer function.
+ */
+void
+_swrast_set_aa_triangle_function(struct gl_context *ctx)
+{
+   SWcontext *swrast = SWRAST_CONTEXT(ctx);
+
+   ASSERT(ctx->Polygon.SmoothFlag);
+
+   if (ctx->Texture._EnabledCoordUnits != 0
+       || ctx->FragmentProgram._Current
+       || swrast->_FogEnabled
+       || _mesa_need_secondary_color(ctx)) {
+      SWRAST_CONTEXT(ctx)->Triangle = general_aa_tri;
+   }
+   else {
+      SWRAST_CONTEXT(ctx)->Triangle = rgba_aa_tri;
+   }
+
+   ASSERT(SWRAST_CONTEXT(ctx)->Triangle);
+}
diff --git a/mesalib/src/mesa/swrast/s_blit.c b/mesalib/src/mesa/swrast/s_blit.c
index 7f53f19eb..f094be898 100644
--- a/mesalib/src/mesa/swrast/s_blit.c
+++ b/mesalib/src/mesa/swrast/s_blit.c
@@ -243,7 +243,7 @@ blit_nearest(struct gl_context *ctx,
 
 #define LERP(T, A, B)  ( (A) + (T) * ((B) - (A)) )
 
-static INLINE GLfloat
+static inline GLfloat
 lerp_2d(GLfloat a, GLfloat b,
         GLfloat v00, GLfloat v10, GLfloat v01, GLfloat v11)
 {
diff --git a/mesalib/src/mesa/swrast/s_context.c b/mesalib/src/mesa/swrast/s_context.c
index a4acac233..5287671d7 100644
--- a/mesalib/src/mesa/swrast/s_context.c
+++ b/mesalib/src/mesa/swrast/s_context.c
@@ -780,17 +780,6 @@ _swrast_CreateContext( struct gl_context *ctx )
    swrast->PointSpan.facing = 0;
    swrast->PointSpan.array = swrast->SpanArrays;
 
-   /* TexelBuffer is also global and normally shared by all SWspan instances;
-    * when running with multiple threads, create one per thread.
-    */
-   swrast->TexelBuffer = (GLfloat *) MALLOC(ctx->Const.MaxTextureImageUnits * maxThreads *
-                                           MAX_WIDTH * 4 * sizeof(GLfloat));
-   if (!swrast->TexelBuffer) {
-      FREE(swrast->SpanArrays);
-      FREE(swrast);
-      return GL_FALSE;
-   }
-
    init_program_native_limits(&ctx->Const.VertexProgram);
    init_program_native_limits(&ctx->Const.GeometryProgram);
    init_program_native_limits(&ctx->Const.FragmentProgram);
diff --git a/mesalib/src/mesa/swrast/s_context.h b/mesalib/src/mesa/swrast/s_context.h
index 1e0bfc0f9..12ad688b0 100644
--- a/mesalib/src/mesa/swrast/s_context.h
+++ b/mesalib/src/mesa/swrast/s_context.h
@@ -163,14 +163,14 @@ struct swrast_texture_image
 
 
 /** cast wrapper */
-static INLINE struct swrast_texture_image *
+static inline struct swrast_texture_image *
 swrast_texture_image(struct gl_texture_image *img)
 {
    return (struct swrast_texture_image *) img;
 }
 
 /** cast wrapper */
-static INLINE const struct swrast_texture_image *
+static inline const struct swrast_texture_image *
 swrast_texture_image_const(const struct gl_texture_image *img)
 {
    return (const struct swrast_texture_image *) img;
@@ -308,14 +308,14 @@ _swrast_update_texture_samplers(struct gl_context *ctx);
 
 
 /** Return SWcontext for the given struct gl_context */
-static INLINE SWcontext *
+static inline SWcontext *
 SWRAST_CONTEXT(struct gl_context *ctx)
 {
    return (SWcontext *) ctx->swrast_context;
 }
 
 /** const version of above */
-static INLINE const SWcontext *
+static inline const SWcontext *
 CONST_SWRAST_CONTEXT(const struct gl_context *ctx)
 {
    return (const SWcontext *) ctx->swrast_context;
@@ -327,7 +327,7 @@ CONST_SWRAST_CONTEXT(const struct gl_context *ctx)
  * For drivers that rely on swrast for fallback rendering, this is the
  * driver's opportunity to map renderbuffers and textures.
  */
-static INLINE void
+static inline void
 swrast_render_start(struct gl_context *ctx)
 {
    SWcontext *swrast = SWRAST_CONTEXT(ctx);
@@ -337,7 +337,7 @@ swrast_render_start(struct gl_context *ctx)
 
 
 /** Called after framebuffer reading/writing */
-static INLINE void
+static inline void
 swrast_render_finish(struct gl_context *ctx)
 {
    SWcontext *swrast = SWRAST_CONTEXT(ctx);
diff --git a/mesalib/src/mesa/swrast/s_fragprog.c b/mesalib/src/mesa/swrast/s_fragprog.c
index 9513b1c46..7f205a200 100644
--- a/mesalib/src/mesa/swrast/s_fragprog.c
+++ b/mesalib/src/mesa/swrast/s_fragprog.c
@@ -35,7 +35,7 @@
  * Apply texture object's swizzle (X/Y/Z/W/0/1) to incoming 'texel'
  * and return results in 'colorOut'.
  */
-static INLINE void
+static inline void
 swizzle_texel(const GLfloat texel[4], GLfloat colorOut[4], GLuint swizzle)
 {
    if (swizzle == SWIZZLE_NOOP) {
diff --git a/mesalib/src/mesa/swrast/s_logic.c b/mesalib/src/mesa/swrast/s_logic.c
index 2f0c0ea7c..80ee46c24 100644
--- a/mesalib/src/mesa/swrast/s_logic.c
+++ b/mesalib/src/mesa/swrast/s_logic.c
@@ -1,219 +1,219 @@
-/*

- * Mesa 3-D graphics library

- * Version:  6.5.2

- *

- * Copyright (C) 1999-2006  Brian Paul   All Rights Reserved.

- *

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the "Software"),

- * to deal in the Software without restriction, including without limitation

- * the rights to use, copy, modify, merge, publish, distribute, sublicense,

- * and/or sell copies of the Software, and to permit persons to whom the

- * Software is furnished to do so, subject to the following conditions:

- *

- * The above copyright notice and this permission notice shall be included

- * in all copies or substantial portions of the Software.

- *

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

- */

-

-

-#include "main/glheader.h"

-#include "main/context.h"

-#include "main/imports.h"

-#include "main/macros.h"

-

-#include "s_context.h"

-#include "s_logic.h"

-#include "s_span.h"

-

-

-/**

- * We do all logic ops on 4-byte GLuints.

- * Depending on bytes per pixel, the mask array elements correspond to

- * 1, 2 or 4 GLuints.

- */

-#define LOGIC_OP_LOOP(MODE, MASKSTRIDE)		\

-do {						\

-   GLuint i;					\

-   switch (MODE) {				\

-      case GL_CLEAR:				\

-         for (i = 0; i < n; i++) {		\

-	    if (mask[i / MASKSTRIDE]) {		\

-	       src[i] = 0;			\

-	    }					\

-	 }					\

-	 break;					\

-      case GL_SET:				\

-         for (i = 0; i < n; i++) {		\

-	    if (mask[i / MASKSTRIDE]) {		\

-	       src[i] = ~0;			\

-	    }					\

-	 }					\

-	 break;					\

-      case GL_COPY:				\

-	 /* do nothing */			\

-	 break;					\

-      case GL_COPY_INVERTED:			\

-         for (i = 0; i < n; i++) {		\

-	    if (mask[i / MASKSTRIDE]) {		\

-	       src[i] = ~src[i];		\

-	    }					\

-	 }					\

-	 break;					\

-      case GL_NOOP:				\

-         for (i = 0; i < n; i++) {		\

-	    if (mask[i / MASKSTRIDE]) {		\

-	       src[i] = dest[i];		\

-	    }					\

-	 }					\

-	 break;					\

-      case GL_INVERT:				\

-         for (i = 0; i < n; i++) {		\

-	    if (mask[i / MASKSTRIDE]) {		\

-	       src[i] = ~dest[i];		\

-	    }					\

-	 }					\

-	 break;					\

-      case GL_AND:				\

-         for (i = 0; i < n; i++) {		\

-	    if (mask[i / MASKSTRIDE]) {		\

-	       src[i] &= dest[i];		\

-	    }					\

-	 }					\

-	 break;					\

-      case GL_NAND:				\

-         for (i = 0; i < n; i++) {		\

-	    if (mask[i / MASKSTRIDE]) {		\

-	       src[i] = ~(src[i] & dest[i]);	\

-	    }					\

-	 }					\

-	 break;					\

-      case GL_OR:				\

-         for (i = 0; i < n; i++) {		\

-	    if (mask[i / MASKSTRIDE]) {		\

-	       src[i] |= dest[i];		\

-	    }					\

-	 }					\

-	 break;					\

-      case GL_NOR:				\

-         for (i = 0; i < n; i++) {		\

-	    if (mask[i / MASKSTRIDE]) {		\

-	       src[i] = ~(src[i] | dest[i]);	\

-	    }					\

-	 }					\

-	 break;					\

-      case GL_XOR:				\

-         for (i = 0; i < n; i++) {		\

-	    if (mask[i / MASKSTRIDE]) {		\

-	       src[i] ^= dest[i];		\

-	    }					\

-	 }					\

-	 break;					\

-      case GL_EQUIV:				\

-         for (i = 0; i < n; i++) {		\

-	    if (mask[i / MASKSTRIDE]) {		\

-	       src[i] = ~(src[i] ^ dest[i]);	\

-	    }					\

-	 }					\

-	 break;					\

-      case GL_AND_REVERSE:			\

-         for (i = 0; i < n; i++) {		\

-	    if (mask[i / MASKSTRIDE]) {		\

-	       src[i] = src[i] & ~dest[i];	\

-	    }					\

-	 }					\

-	 break;					\

-      case GL_AND_INVERTED:			\

-         for (i = 0; i < n; i++) {		\

-	    if (mask[i / MASKSTRIDE]) {		\

-	       src[i] = ~src[i] & dest[i];	\

-	    }					\

-	 }					\

-	 break;					\

-      case GL_OR_REVERSE:			\

-         for (i = 0; i < n; i++) {		\

-	    if (mask[i / MASKSTRIDE]) {		\

-	       src[i] = src[i] | ~dest[i];	\

-	    }					\

-	 }					\

-	 break;					\

-      case GL_OR_INVERTED:			\

-         for (i = 0; i < n; i++) {		\

-	    if (mask[i / MASKSTRIDE]) {		\

-	       src[i] = ~src[i] | dest[i];	\

-	    }					\

-	 }					\

-	 break;					\

-      default:					\

-	 _mesa_problem(ctx, "bad logicop mode");\

-   }						\

-} while (0)

-

-

-

-static INLINE void

-logicop_uint1(struct gl_context *ctx, GLuint n, GLuint src[], const GLuint dest[],

-              const GLubyte mask[])

-{

-   LOGIC_OP_LOOP(ctx->Color.LogicOp, 1);

-}

-

-

-static INLINE void

-logicop_uint2(struct gl_context *ctx, GLuint n, GLuint src[], const GLuint dest[],

-              const GLubyte mask[])

-{

-   LOGIC_OP_LOOP(ctx->Color.LogicOp, 2);

-}

-

-

-static INLINE void

-logicop_uint4(struct gl_context *ctx, GLuint n, GLuint src[], const GLuint dest[],

-              const GLubyte mask[])

-{

-   LOGIC_OP_LOOP(ctx->Color.LogicOp, 4);

-}

-

-

-

-/**

- * Apply the current logic operator to a span of RGBA pixels.

- * We can handle horizontal runs of pixels (spans) or arrays of x/y

- * pixel coordinates.

- */

-void

-_swrast_logicop_rgba_span(struct gl_context *ctx, struct gl_renderbuffer *rb,

-                          SWspan *span)

-{

-   void *rbPixels;

-

-   ASSERT(span->end < MAX_WIDTH);

-   ASSERT(span->arrayMask & SPAN_RGBA);

-   ASSERT(rb->DataType == span->array->ChanType);

-

-   rbPixels = _swrast_get_dest_rgba(ctx, rb, span);

-

-   if (span->array->ChanType == GL_UNSIGNED_BYTE) {

-      /* treat 4*GLubyte as GLuint */

-      logicop_uint1(ctx, span->end,

-                    (GLuint *) span->array->rgba8,

-                    (const GLuint *) rbPixels, span->array->mask);

-   }

-   else if (span->array->ChanType == GL_UNSIGNED_SHORT) {

-      /* treat 2*GLushort as GLuint */

-      logicop_uint2(ctx, 2 * span->end,

-                    (GLuint *) span->array->rgba16,

-                    (const GLuint *) rbPixels, span->array->mask);

-   }

-   else {

-      logicop_uint4(ctx, 4 * span->end,

-                    (GLuint *) span->array->attribs[FRAG_ATTRIB_COL0],

-                    (const GLuint *) rbPixels, span->array->mask);

-   }

-}

+/*
+ * Mesa 3-D graphics library
+ * Version:  6.5.2
+ *
+ * Copyright (C) 1999-2006  Brian Paul   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+
+#include "main/glheader.h"
+#include "main/context.h"
+#include "main/imports.h"
+#include "main/macros.h"
+
+#include "s_context.h"
+#include "s_logic.h"
+#include "s_span.h"
+
+
+/**
+ * We do all logic ops on 4-byte GLuints.
+ * Depending on bytes per pixel, the mask array elements correspond to
+ * 1, 2 or 4 GLuints.
+ */
+#define LOGIC_OP_LOOP(MODE, MASKSTRIDE)		\
+do {						\
+   GLuint i;					\
+   switch (MODE) {				\
+      case GL_CLEAR:				\
+         for (i = 0; i < n; i++) {		\
+	    if (mask[i / MASKSTRIDE]) {		\
+	       src[i] = 0;			\
+	    }					\
+	 }					\
+	 break;					\
+      case GL_SET:				\
+         for (i = 0; i < n; i++) {		\
+	    if (mask[i / MASKSTRIDE]) {		\
+	       src[i] = ~0;			\
+	    }					\
+	 }					\
+	 break;					\
+      case GL_COPY:				\
+	 /* do nothing */			\
+	 break;					\
+      case GL_COPY_INVERTED:			\
+         for (i = 0; i < n; i++) {		\
+	    if (mask[i / MASKSTRIDE]) {		\
+	       src[i] = ~src[i];		\
+	    }					\
+	 }					\
+	 break;					\
+      case GL_NOOP:				\
+         for (i = 0; i < n; i++) {		\
+	    if (mask[i / MASKSTRIDE]) {		\
+	       src[i] = dest[i];		\
+	    }					\
+	 }					\
+	 break;					\
+      case GL_INVERT:				\
+         for (i = 0; i < n; i++) {		\
+	    if (mask[i / MASKSTRIDE]) {		\
+	       src[i] = ~dest[i];		\
+	    }					\
+	 }					\
+	 break;					\
+      case GL_AND:				\
+         for (i = 0; i < n; i++) {		\
+	    if (mask[i / MASKSTRIDE]) {		\
+	       src[i] &= dest[i];		\
+	    }					\
+	 }					\
+	 break;					\
+      case GL_NAND:				\
+         for (i = 0; i < n; i++) {		\
+	    if (mask[i / MASKSTRIDE]) {		\
+	       src[i] = ~(src[i] & dest[i]);	\
+	    }					\
+	 }					\
+	 break;					\
+      case GL_OR:				\
+         for (i = 0; i < n; i++) {		\
+	    if (mask[i / MASKSTRIDE]) {		\
+	       src[i] |= dest[i];		\
+	    }					\
+	 }					\
+	 break;					\
+      case GL_NOR:				\
+         for (i = 0; i < n; i++) {		\
+	    if (mask[i / MASKSTRIDE]) {		\
+	       src[i] = ~(src[i] | dest[i]);	\
+	    }					\
+	 }					\
+	 break;					\
+      case GL_XOR:				\
+         for (i = 0; i < n; i++) {		\
+	    if (mask[i / MASKSTRIDE]) {		\
+	       src[i] ^= dest[i];		\
+	    }					\
+	 }					\
+	 break;					\
+      case GL_EQUIV:				\
+         for (i = 0; i < n; i++) {		\
+	    if (mask[i / MASKSTRIDE]) {		\
+	       src[i] = ~(src[i] ^ dest[i]);	\
+	    }					\
+	 }					\
+	 break;					\
+      case GL_AND_REVERSE:			\
+         for (i = 0; i < n; i++) {		\
+	    if (mask[i / MASKSTRIDE]) {		\
+	       src[i] = src[i] & ~dest[i];	\
+	    }					\
+	 }					\
+	 break;					\
+      case GL_AND_INVERTED:			\
+         for (i = 0; i < n; i++) {		\
+	    if (mask[i / MASKSTRIDE]) {		\
+	       src[i] = ~src[i] & dest[i];	\
+	    }					\
+	 }					\
+	 break;					\
+      case GL_OR_REVERSE:			\
+         for (i = 0; i < n; i++) {		\
+	    if (mask[i / MASKSTRIDE]) {		\
+	       src[i] = src[i] | ~dest[i];	\
+	    }					\
+	 }					\
+	 break;					\
+      case GL_OR_INVERTED:			\
+         for (i = 0; i < n; i++) {		\
+	    if (mask[i / MASKSTRIDE]) {		\
+	       src[i] = ~src[i] | dest[i];	\
+	    }					\
+	 }					\
+	 break;					\
+      default:					\
+	 _mesa_problem(ctx, "bad logicop mode");\
+   }						\
+} while (0)
+
+
+
+static inline void
+logicop_uint1(struct gl_context *ctx, GLuint n, GLuint src[], const GLuint dest[],
+              const GLubyte mask[])
+{
+   LOGIC_OP_LOOP(ctx->Color.LogicOp, 1);
+}
+
+
+static inline void
+logicop_uint2(struct gl_context *ctx, GLuint n, GLuint src[], const GLuint dest[],
+              const GLubyte mask[])
+{
+   LOGIC_OP_LOOP(ctx->Color.LogicOp, 2);
+}
+
+
+static inline void
+logicop_uint4(struct gl_context *ctx, GLuint n, GLuint src[], const GLuint dest[],
+              const GLubyte mask[])
+{
+   LOGIC_OP_LOOP(ctx->Color.LogicOp, 4);
+}
+
+
+
+/**
+ * Apply the current logic operator to a span of RGBA pixels.
+ * We can handle horizontal runs of pixels (spans) or arrays of x/y
+ * pixel coordinates.
+ */
+void
+_swrast_logicop_rgba_span(struct gl_context *ctx, struct gl_renderbuffer *rb,
+                          SWspan *span)
+{
+   void *rbPixels;
+
+   ASSERT(span->end < MAX_WIDTH);
+   ASSERT(span->arrayMask & SPAN_RGBA);
+   ASSERT(rb->DataType == span->array->ChanType);
+
+   rbPixels = _swrast_get_dest_rgba(ctx, rb, span);
+
+   if (span->array->ChanType == GL_UNSIGNED_BYTE) {
+      /* treat 4*GLubyte as GLuint */
+      logicop_uint1(ctx, span->end,
+                    (GLuint *) span->array->rgba8,
+                    (const GLuint *) rbPixels, span->array->mask);
+   }
+   else if (span->array->ChanType == GL_UNSIGNED_SHORT) {
+      /* treat 2*GLushort as GLuint */
+      logicop_uint2(ctx, 2 * span->end,
+                    (GLuint *) span->array->rgba16,
+                    (const GLuint *) rbPixels, span->array->mask);
+   }
+   else {
+      logicop_uint4(ctx, 4 * span->end,
+                    (GLuint *) span->array->attribs[FRAG_ATTRIB_COL0],
+                    (const GLuint *) rbPixels, span->array->mask);
+   }
+}
diff --git a/mesalib/src/mesa/swrast/s_points.c b/mesalib/src/mesa/swrast/s_points.c
index a46be8f58..11b7ef7b1 100644
--- a/mesalib/src/mesa/swrast/s_points.c
+++ b/mesalib/src/mesa/swrast/s_points.c
@@ -1,572 +1,572 @@
-/*

- * Mesa 3-D graphics library

- * Version:  7.1

- *

- * Copyright (C) 1999-2007  Brian Paul   All Rights Reserved.

- *

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the "Software"),

- * to deal in the Software without restriction, including without limitation

- * the rights to use, copy, modify, merge, publish, distribute, sublicense,

- * and/or sell copies of the Software, and to permit persons to whom the

- * Software is furnished to do so, subject to the following conditions:

- *

- * The above copyright notice and this permission notice shall be included

- * in all copies or substantial portions of the Software.

- *

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

- */

-

-

-#include "main/glheader.h"

-#include "main/colormac.h"

-#include "main/macros.h"

-#include "s_context.h"

-#include "s_feedback.h"

-#include "s_points.h"

-#include "s_span.h"

-

-

-/**

- * Used to cull points with invalid coords

- */

-#define CULL_INVALID(V)                              \

-   do {                                              \

-      float tmp = (V)->attrib[FRAG_ATTRIB_WPOS][0]   \

-                + (V)->attrib[FRAG_ATTRIB_WPOS][1];  \

-      if (IS_INF_OR_NAN(tmp))                        \

-	 return;                                     \

-   } while(0)

-

-

-

-/**

- * Get/compute the point size.

- * The size may come from a vertex shader, or computed with attentuation

- * or just the glPointSize value.

- * Must also clamp to user-defined range and implmentation limits.

- */

-static INLINE GLfloat

-get_size(const struct gl_context *ctx, const SWvertex *vert, GLboolean smoothed)

-{

-   GLfloat size;

-

-   if (ctx->Point._Attenuated || ctx->VertexProgram.PointSizeEnabled) {

-      /* use vertex's point size */

-      size = vert->pointSize;

-   }

-   else {

-      /* use constant point size */

-      size = ctx->Point.Size;

-   }

-   /* always clamp to user-specified limits */

-   size = CLAMP(size, ctx->Point.MinSize, ctx->Point.MaxSize);

-   /* clamp to implementation limits */

-   if (smoothed)

-      size = CLAMP(size, ctx->Const.MinPointSizeAA, ctx->Const.MaxPointSizeAA);

-   else

-      size = CLAMP(size, ctx->Const.MinPointSize, ctx->Const.MaxPointSize);

-

-   return size;

-}

-

-

-/**

- * Draw a point sprite

- */

-static void

-sprite_point(struct gl_context *ctx, const SWvertex *vert)

-{

-   SWcontext *swrast = SWRAST_CONTEXT(ctx);

-   SWspan span;

-   GLfloat size;

-   GLuint tCoords[MAX_TEXTURE_COORD_UNITS + 1];

-   GLuint numTcoords = 0;

-   GLfloat t0, dtdy;

-

-   CULL_INVALID(vert);

-

-   /* z coord */

-   if (ctx->DrawBuffer->Visual.depthBits <= 16)

-      span.z = FloatToFixed(vert->attrib[FRAG_ATTRIB_WPOS][2] + 0.5F);

-   else

-      span.z = (GLuint) (vert->attrib[FRAG_ATTRIB_WPOS][2] + 0.5F);

-   span.zStep = 0;

-

-   size = get_size(ctx, vert, GL_FALSE);

-

-   /* span init */

-   INIT_SPAN(span, GL_POINT);

-   span.interpMask = SPAN_Z | SPAN_RGBA;

-

-   span.facing = swrast->PointLineFacing;

-

-   span.red   = ChanToFixed(vert->color[0]);

-   span.green = ChanToFixed(vert->color[1]);

-   span.blue  = ChanToFixed(vert->color[2]);

-   span.alpha = ChanToFixed(vert->color[3]);

-   span.redStep = 0;

-   span.greenStep = 0;

-   span.blueStep = 0;

-   span.alphaStep = 0;

-

-   /* need these for fragment programs */

-   span.attrStart[FRAG_ATTRIB_WPOS][3] = 1.0F;

-   span.attrStepX[FRAG_ATTRIB_WPOS][3] = 0.0F;

-   span.attrStepY[FRAG_ATTRIB_WPOS][3] = 0.0F;

-

-   {

-      GLfloat s, r, dsdx;

-

-      /* texcoord / pointcoord interpolants */

-      s = 0.0F;

-      dsdx = 1.0F / size;

-      if (ctx->Point.SpriteOrigin == GL_LOWER_LEFT) {

-         dtdy = 1.0F / size;

-         t0 = 0.5F * dtdy;

-      }

-      else {

-         /* GL_UPPER_LEFT */

-         dtdy = -1.0F / size;

-         t0 = 1.0F + 0.5F * dtdy;

-      }

-

-      ATTRIB_LOOP_BEGIN

-         if (attr >= FRAG_ATTRIB_TEX0 && attr <= FRAG_ATTRIB_TEX7) {

-            /* a texcoord attribute */

-            const GLuint u = attr - FRAG_ATTRIB_TEX0;

-            ASSERT(u < Elements(ctx->Point.CoordReplace));

-            if (ctx->Point.CoordReplace[u]) {

-               tCoords[numTcoords++] = attr;

-

-               if (ctx->Point.SpriteRMode == GL_ZERO)

-                  r = 0.0F;

-               else if (ctx->Point.SpriteRMode == GL_S)

-                  r = vert->attrib[attr][0];

-               else /* GL_R */

-                  r = vert->attrib[attr][2];

-

-               span.attrStart[attr][0] = s;

-               span.attrStart[attr][1] = 0.0; /* overwritten below */

-               span.attrStart[attr][2] = r;

-               span.attrStart[attr][3] = 1.0;

-

-               span.attrStepX[attr][0] = dsdx;

-               span.attrStepX[attr][1] = 0.0;

-               span.attrStepX[attr][2] = 0.0;

-               span.attrStepX[attr][3] = 0.0;

-

-               span.attrStepY[attr][0] = 0.0;

-               span.attrStepY[attr][1] = dtdy;

-               span.attrStepY[attr][2] = 0.0;

-               span.attrStepY[attr][3] = 0.0;

-

-               continue;

-            }

-         }

-         else if (attr == FRAG_ATTRIB_PNTC) {

-            /* GLSL gl_PointCoord.xy (.zw undefined) */

-            span.attrStart[FRAG_ATTRIB_PNTC][0] = 0.0;

-            span.attrStart[FRAG_ATTRIB_PNTC][1] = 0.0; /* t0 set below */

-            span.attrStepX[FRAG_ATTRIB_PNTC][0] = dsdx;

-            span.attrStepX[FRAG_ATTRIB_PNTC][1] = 0.0;

-            span.attrStepY[FRAG_ATTRIB_PNTC][0] = 0.0;

-            span.attrStepY[FRAG_ATTRIB_PNTC][1] = dtdy;

-            tCoords[numTcoords++] = FRAG_ATTRIB_PNTC;

-            continue;

-         }

-         /* use vertex's texcoord/attrib */

-         COPY_4V(span.attrStart[attr], vert->attrib[attr]);

-         ASSIGN_4V(span.attrStepX[attr], 0, 0, 0, 0);

-         ASSIGN_4V(span.attrStepY[attr], 0, 0, 0, 0);

-      ATTRIB_LOOP_END;

-   }

-

-   /* compute pos, bounds and render */

-   {

-      const GLfloat x = vert->attrib[FRAG_ATTRIB_WPOS][0];

-      const GLfloat y = vert->attrib[FRAG_ATTRIB_WPOS][1];

-      GLint iSize = (GLint) (size + 0.5F);

-      GLint xmin, xmax, ymin, ymax, iy;

-      GLint iRadius;

-      GLfloat tcoord = t0;

-

-      iSize = MAX2(1, iSize);

-      iRadius = iSize / 2;

-

-      if (iSize & 1) {

-         /* odd size */

-         xmin = (GLint) (x - iRadius);

-         xmax = (GLint) (x + iRadius);

-         ymin = (GLint) (y - iRadius);

-         ymax = (GLint) (y + iRadius);

-      }

-      else {

-         /* even size */

-         /* 0.501 factor allows conformance to pass */

-         xmin = (GLint) (x + 0.501) - iRadius;

-         xmax = xmin + iSize - 1;

-         ymin = (GLint) (y + 0.501) - iRadius;

-         ymax = ymin + iSize - 1;

-      }

-

-      /* render spans */

-      for (iy = ymin; iy <= ymax; iy++) {

-         GLuint i;

-         /* setup texcoord T for this row */

-         for (i = 0; i < numTcoords; i++) {

-            span.attrStart[tCoords[i]][1] = tcoord;

-         }

-

-         /* these might get changed by span clipping */

-         span.x = xmin;

-         span.y = iy;

-         span.end = xmax - xmin + 1;

-

-         _swrast_write_rgba_span(ctx, &span);

-

-         tcoord += dtdy;

-      }

-   }

-}

-

-

-/**

- * Draw smooth/antialiased point.  RGB or CI mode.

- */

-static void

-smooth_point(struct gl_context *ctx, const SWvertex *vert)

-{

-   SWcontext *swrast = SWRAST_CONTEXT(ctx);

-   SWspan span;

-   GLfloat size, alphaAtten;

-

-   CULL_INVALID(vert);

-

-   /* z coord */

-   if (ctx->DrawBuffer->Visual.depthBits <= 16)

-      span.z = FloatToFixed(vert->attrib[FRAG_ATTRIB_WPOS][2] + 0.5F);

-   else

-      span.z = (GLuint) (vert->attrib[FRAG_ATTRIB_WPOS][2] + 0.5F);

-   span.zStep = 0;

-

-   size = get_size(ctx, vert, GL_TRUE);

-

-   /* alpha attenuation / fade factor */

-   if (ctx->Multisample._Enabled) {

-      if (vert->pointSize >= ctx->Point.Threshold) {

-         alphaAtten = 1.0F;

-      }

-      else {

-         GLfloat dsize = vert->pointSize / ctx->Point.Threshold;

-         alphaAtten = dsize * dsize;

-      }

-   }

-   else {

-      alphaAtten = 1.0;

-   }

-   (void) alphaAtten; /* not used */

-

-   /* span init */

-   INIT_SPAN(span, GL_POINT);

-   span.interpMask = SPAN_Z | SPAN_RGBA;

-   span.arrayMask = SPAN_COVERAGE | SPAN_MASK;

-

-   span.facing = swrast->PointLineFacing;

-

-   span.red   = ChanToFixed(vert->color[0]);

-   span.green = ChanToFixed(vert->color[1]);

-   span.blue  = ChanToFixed(vert->color[2]);

-   span.alpha = ChanToFixed(vert->color[3]);

-   span.redStep = 0;

-   span.greenStep = 0;

-   span.blueStep = 0;

-   span.alphaStep = 0;

-

-   /* need these for fragment programs */

-   span.attrStart[FRAG_ATTRIB_WPOS][3] = 1.0F;

-   span.attrStepX[FRAG_ATTRIB_WPOS][3] = 0.0F;

-   span.attrStepY[FRAG_ATTRIB_WPOS][3] = 0.0F;

-

-   ATTRIB_LOOP_BEGIN

-      COPY_4V(span.attrStart[attr], vert->attrib[attr]);

-      ASSIGN_4V(span.attrStepX[attr], 0, 0, 0, 0);

-      ASSIGN_4V(span.attrStepY[attr], 0, 0, 0, 0);

-   ATTRIB_LOOP_END

-

-   /* compute pos, bounds and render */

-   {

-      const GLfloat x = vert->attrib[FRAG_ATTRIB_WPOS][0];

-      const GLfloat y = vert->attrib[FRAG_ATTRIB_WPOS][1];

-      const GLfloat radius = 0.5F * size;

-      const GLfloat rmin = radius - 0.7071F;  /* 0.7071 = sqrt(2)/2 */

-      const GLfloat rmax = radius + 0.7071F;

-      const GLfloat rmin2 = MAX2(0.0F, rmin * rmin);

-      const GLfloat rmax2 = rmax * rmax;

-      const GLfloat cscale = 1.0F / (rmax2 - rmin2);

-      const GLint xmin = (GLint) (x - radius);

-      const GLint xmax = (GLint) (x + radius);

-      const GLint ymin = (GLint) (y - radius);

-      const GLint ymax = (GLint) (y + radius);

-      GLint ix, iy;

-

-      for (iy = ymin; iy <= ymax; iy++) {

-

-         /* these might get changed by span clipping */

-         span.x = xmin;

-         span.y = iy;

-         span.end = xmax - xmin + 1;

-

-         /* compute coverage for each pixel in span */

-         for (ix = xmin; ix <= xmax; ix++) {

-            const GLfloat dx = ix - x + 0.5F;

-            const GLfloat dy = iy - y + 0.5F;

-            const GLfloat dist2 = dx * dx + dy * dy;

-            GLfloat coverage;

-

-            if (dist2 < rmax2) {

-               if (dist2 >= rmin2) {

-                  /* compute partial coverage */

-                  coverage = 1.0F - (dist2 - rmin2) * cscale;

-               }

-               else {

-                  /* full coverage */

-                  coverage = 1.0F;

-               }

-               span.array->mask[ix - xmin] = 1;

-            }

-            else {

-               /* zero coverage - fragment outside the radius */

-               coverage = 0.0;

-               span.array->mask[ix - xmin] = 0;

-            }

-            span.array->coverage[ix - xmin] = coverage;

-         }

-

-         /* render span */

-         _swrast_write_rgba_span(ctx, &span);

-

-      }

-   }

-}

-

-

-/**

- * Draw large (size >= 1) non-AA point.  RGB or CI mode.

- */

-static void

-large_point(struct gl_context *ctx, const SWvertex *vert)

-{

-   SWcontext *swrast = SWRAST_CONTEXT(ctx);

-   SWspan span;

-   GLfloat size;

-

-   CULL_INVALID(vert);

-

-   /* z coord */

-   if (ctx->DrawBuffer->Visual.depthBits <= 16)

-      span.z = FloatToFixed(vert->attrib[FRAG_ATTRIB_WPOS][2] + 0.5F);

-   else

-      span.z = (GLuint) (vert->attrib[FRAG_ATTRIB_WPOS][2] + 0.5F);

-   span.zStep = 0;

-

-   size = get_size(ctx, vert, GL_FALSE);

-

-   /* span init */

-   INIT_SPAN(span, GL_POINT);

-   span.arrayMask = SPAN_XY;

-   span.facing = swrast->PointLineFacing;

-

-   span.interpMask = SPAN_Z | SPAN_RGBA;

-   span.red   = ChanToFixed(vert->color[0]);

-   span.green = ChanToFixed(vert->color[1]);

-   span.blue  = ChanToFixed(vert->color[2]);

-   span.alpha = ChanToFixed(vert->color[3]);

-   span.redStep = 0;

-   span.greenStep = 0;

-   span.blueStep = 0;

-   span.alphaStep = 0;

-

-   /* need these for fragment programs */

-   span.attrStart[FRAG_ATTRIB_WPOS][3] = 1.0F;

-   span.attrStepX[FRAG_ATTRIB_WPOS][3] = 0.0F;

-   span.attrStepY[FRAG_ATTRIB_WPOS][3] = 0.0F;

-

-   ATTRIB_LOOP_BEGIN

-      COPY_4V(span.attrStart[attr], vert->attrib[attr]);

-      ASSIGN_4V(span.attrStepX[attr], 0, 0, 0, 0);

-      ASSIGN_4V(span.attrStepY[attr], 0, 0, 0, 0);

-   ATTRIB_LOOP_END

-

-   /* compute pos, bounds and render */

-   {

-      const GLfloat x = vert->attrib[FRAG_ATTRIB_WPOS][0];

-      const GLfloat y = vert->attrib[FRAG_ATTRIB_WPOS][1];

-      GLint iSize = (GLint) (size + 0.5F);

-      GLint xmin, xmax, ymin, ymax, ix, iy;

-      GLint iRadius;

-

-      iSize = MAX2(1, iSize);

-      iRadius = iSize / 2;

-

-      if (iSize & 1) {

-         /* odd size */

-         xmin = (GLint) (x - iRadius);

-         xmax = (GLint) (x + iRadius);

-         ymin = (GLint) (y - iRadius);

-         ymax = (GLint) (y + iRadius);

-      }

-      else {

-         /* even size */

-         /* 0.501 factor allows conformance to pass */

-         xmin = (GLint) (x + 0.501) - iRadius;

-         xmax = xmin + iSize - 1;

-         ymin = (GLint) (y + 0.501) - iRadius;

-         ymax = ymin + iSize - 1;

-      }

-

-      /* generate fragments */

-      span.end = 0;

-      for (iy = ymin; iy <= ymax; iy++) {

-         for (ix = xmin; ix <= xmax; ix++) {

-            span.array->x[span.end] = ix;

-            span.array->y[span.end] = iy;

-            span.end++;

-         }

-      }

-      assert(span.end <= MAX_WIDTH);

-      _swrast_write_rgba_span(ctx, &span);

-   }

-}

-

-

-/**

- * Draw size=1, single-pixel point

- */

-static void

-pixel_point(struct gl_context *ctx, const SWvertex *vert)

-{

-   SWcontext *swrast = SWRAST_CONTEXT(ctx);

-   /*

-    * Note that unlike the other functions, we put single-pixel points

-    * into a special span array in order to render as many points as

-    * possible with a single _swrast_write_rgba_span() call.

-    */

-   SWspan *span = &(swrast->PointSpan);

-   GLuint count;

-

-   CULL_INVALID(vert);

-

-   /* Span init */

-   span->interpMask = 0;

-   span->arrayMask = SPAN_XY | SPAN_Z;

-   span->arrayMask |= SPAN_RGBA;

-   /*span->arrayMask |= SPAN_LAMBDA;*/

-   span->arrayAttribs = swrast->_ActiveAttribMask; /* we'll produce these vals */

-

-   /* need these for fragment programs */

-   span->attrStart[FRAG_ATTRIB_WPOS][3] = 1.0F;

-   span->attrStepX[FRAG_ATTRIB_WPOS][3] = 0.0F;

-   span->attrStepY[FRAG_ATTRIB_WPOS][3] = 0.0F;

-

-   /* check if we need to flush */

-   if (span->end >= MAX_WIDTH ||

-       (swrast->_RasterMask & (BLEND_BIT | LOGIC_OP_BIT | MASKING_BIT)) ||

-       span->facing != swrast->PointLineFacing) {

-      if (span->end > 0) {

-	 _swrast_write_rgba_span(ctx, span);

-         span->end = 0;

-      }

-   }

-

-   count = span->end;

-

-   span->facing = swrast->PointLineFacing;

-

-   /* fragment attributes */

-   span->array->rgba[count][RCOMP] = vert->color[0];

-   span->array->rgba[count][GCOMP] = vert->color[1];

-   span->array->rgba[count][BCOMP] = vert->color[2];

-   span->array->rgba[count][ACOMP] = vert->color[3];

-

-   ATTRIB_LOOP_BEGIN

-      COPY_4V(span->array->attribs[attr][count], vert->attrib[attr]);

-   ATTRIB_LOOP_END

-

-   /* fragment position */

-   span->array->x[count] = (GLint) vert->attrib[FRAG_ATTRIB_WPOS][0];

-   span->array->y[count] = (GLint) vert->attrib[FRAG_ATTRIB_WPOS][1];

-   span->array->z[count] = (GLint) (vert->attrib[FRAG_ATTRIB_WPOS][2] + 0.5F);

-

-   span->end = count + 1;

-   ASSERT(span->end <= MAX_WIDTH);

-}

-

-

-/**

- * Add specular color to primary color, draw point, restore original

- * primary color.

- */

-void

-_swrast_add_spec_terms_point(struct gl_context *ctx, const SWvertex *v0)

-{

-   SWvertex *ncv0 = (SWvertex *) v0; /* cast away const */

-   GLfloat rSum, gSum, bSum;

-   GLchan cSave[4];

-

-   /* save */

-   COPY_CHAN4(cSave, ncv0->color);

-   /* sum */

-   rSum = CHAN_TO_FLOAT(ncv0->color[0]) + ncv0->attrib[FRAG_ATTRIB_COL1][0];

-   gSum = CHAN_TO_FLOAT(ncv0->color[1]) + ncv0->attrib[FRAG_ATTRIB_COL1][1];

-   bSum = CHAN_TO_FLOAT(ncv0->color[2]) + ncv0->attrib[FRAG_ATTRIB_COL1][2];

-   UNCLAMPED_FLOAT_TO_CHAN(ncv0->color[0], rSum);

-   UNCLAMPED_FLOAT_TO_CHAN(ncv0->color[1], gSum);

-   UNCLAMPED_FLOAT_TO_CHAN(ncv0->color[2], bSum);

-   /* draw */

-   SWRAST_CONTEXT(ctx)->SpecPoint(ctx, ncv0);

-   /* restore */

-   COPY_CHAN4(ncv0->color, cSave);

-}

-

-

-/**

- * Examine current state to determine which point drawing function to use.

- */

-void

-_swrast_choose_point(struct gl_context *ctx)

-{

-   SWcontext *swrast = SWRAST_CONTEXT(ctx);

-   const GLfloat size = CLAMP(ctx->Point.Size,

-                              ctx->Point.MinSize,

-                              ctx->Point.MaxSize);

-

-   if (ctx->RenderMode == GL_RENDER) {

-      if (ctx->Point.PointSprite) {

-         swrast->Point = sprite_point;

-      }

-      else if (ctx->Point.SmoothFlag) {

-         swrast->Point = smooth_point;

-      }

-      else if (size > 1.0 ||

-               ctx->Point._Attenuated ||

-               ctx->VertexProgram.PointSizeEnabled) {

-         swrast->Point = large_point;

-      }

-      else {

-         swrast->Point = pixel_point;

-      }

-   }

-   else if (ctx->RenderMode == GL_FEEDBACK) {

-      swrast->Point = _swrast_feedback_point;

-   }

-   else {

-      /* GL_SELECT mode */

-      swrast->Point = _swrast_select_point;

-   }

-}

+/*
+ * Mesa 3-D graphics library
+ * Version:  7.1
+ *
+ * Copyright (C) 1999-2007  Brian Paul   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+
+#include "main/glheader.h"
+#include "main/colormac.h"
+#include "main/macros.h"
+#include "s_context.h"
+#include "s_feedback.h"
+#include "s_points.h"
+#include "s_span.h"
+
+
+/**
+ * Used to cull points with invalid coords
+ */
+#define CULL_INVALID(V)                              \
+   do {                                              \
+      float tmp = (V)->attrib[FRAG_ATTRIB_WPOS][0]   \
+                + (V)->attrib[FRAG_ATTRIB_WPOS][1];  \
+      if (IS_INF_OR_NAN(tmp))                        \
+	 return;                                     \
+   } while(0)
+
+
+
+/**
+ * Get/compute the point size.
+ * The size may come from a vertex shader, or computed with attentuation
+ * or just the glPointSize value.
+ * Must also clamp to user-defined range and implmentation limits.
+ */
+static inline GLfloat
+get_size(const struct gl_context *ctx, const SWvertex *vert, GLboolean smoothed)
+{
+   GLfloat size;
+
+   if (ctx->Point._Attenuated || ctx->VertexProgram.PointSizeEnabled) {
+      /* use vertex's point size */
+      size = vert->pointSize;
+   }
+   else {
+      /* use constant point size */
+      size = ctx->Point.Size;
+   }
+   /* always clamp to user-specified limits */
+   size = CLAMP(size, ctx->Point.MinSize, ctx->Point.MaxSize);
+   /* clamp to implementation limits */
+   if (smoothed)
+      size = CLAMP(size, ctx->Const.MinPointSizeAA, ctx->Const.MaxPointSizeAA);
+   else
+      size = CLAMP(size, ctx->Const.MinPointSize, ctx->Const.MaxPointSize);
+
+   return size;
+}
+
+
+/**
+ * Draw a point sprite
+ */
+static void
+sprite_point(struct gl_context *ctx, const SWvertex *vert)
+{
+   SWcontext *swrast = SWRAST_CONTEXT(ctx);
+   SWspan span;
+   GLfloat size;
+   GLuint tCoords[MAX_TEXTURE_COORD_UNITS + 1];
+   GLuint numTcoords = 0;
+   GLfloat t0, dtdy;
+
+   CULL_INVALID(vert);
+
+   /* z coord */
+   if (ctx->DrawBuffer->Visual.depthBits <= 16)
+      span.z = FloatToFixed(vert->attrib[FRAG_ATTRIB_WPOS][2] + 0.5F);
+   else
+      span.z = (GLuint) (vert->attrib[FRAG_ATTRIB_WPOS][2] + 0.5F);
+   span.zStep = 0;
+
+   size = get_size(ctx, vert, GL_FALSE);
+
+   /* span init */
+   INIT_SPAN(span, GL_POINT);
+   span.interpMask = SPAN_Z | SPAN_RGBA;
+
+   span.facing = swrast->PointLineFacing;
+
+   span.red   = ChanToFixed(vert->color[0]);
+   span.green = ChanToFixed(vert->color[1]);
+   span.blue  = ChanToFixed(vert->color[2]);
+   span.alpha = ChanToFixed(vert->color[3]);
+   span.redStep = 0;
+   span.greenStep = 0;
+   span.blueStep = 0;
+   span.alphaStep = 0;
+
+   /* need these for fragment programs */
+   span.attrStart[FRAG_ATTRIB_WPOS][3] = 1.0F;
+   span.attrStepX[FRAG_ATTRIB_WPOS][3] = 0.0F;
+   span.attrStepY[FRAG_ATTRIB_WPOS][3] = 0.0F;
+
+   {
+      GLfloat s, r, dsdx;
+
+      /* texcoord / pointcoord interpolants */
+      s = 0.0F;
+      dsdx = 1.0F / size;
+      if (ctx->Point.SpriteOrigin == GL_LOWER_LEFT) {
+         dtdy = 1.0F / size;
+         t0 = 0.5F * dtdy;
+      }
+      else {
+         /* GL_UPPER_LEFT */
+         dtdy = -1.0F / size;
+         t0 = 1.0F + 0.5F * dtdy;
+      }
+
+      ATTRIB_LOOP_BEGIN
+         if (attr >= FRAG_ATTRIB_TEX0 && attr <= FRAG_ATTRIB_TEX7) {
+            /* a texcoord attribute */
+            const GLuint u = attr - FRAG_ATTRIB_TEX0;
+            ASSERT(u < Elements(ctx->Point.CoordReplace));
+            if (ctx->Point.CoordReplace[u]) {
+               tCoords[numTcoords++] = attr;
+
+               if (ctx->Point.SpriteRMode == GL_ZERO)
+                  r = 0.0F;
+               else if (ctx->Point.SpriteRMode == GL_S)
+                  r = vert->attrib[attr][0];
+               else /* GL_R */
+                  r = vert->attrib[attr][2];
+
+               span.attrStart[attr][0] = s;
+               span.attrStart[attr][1] = 0.0; /* overwritten below */
+               span.attrStart[attr][2] = r;
+               span.attrStart[attr][3] = 1.0;
+
+               span.attrStepX[attr][0] = dsdx;
+               span.attrStepX[attr][1] = 0.0;
+               span.attrStepX[attr][2] = 0.0;
+               span.attrStepX[attr][3] = 0.0;
+
+               span.attrStepY[attr][0] = 0.0;
+               span.attrStepY[attr][1] = dtdy;
+               span.attrStepY[attr][2] = 0.0;
+               span.attrStepY[attr][3] = 0.0;
+
+               continue;
+            }
+         }
+         else if (attr == FRAG_ATTRIB_PNTC) {
+            /* GLSL gl_PointCoord.xy (.zw undefined) */
+            span.attrStart[FRAG_ATTRIB_PNTC][0] = 0.0;
+            span.attrStart[FRAG_ATTRIB_PNTC][1] = 0.0; /* t0 set below */
+            span.attrStepX[FRAG_ATTRIB_PNTC][0] = dsdx;
+            span.attrStepX[FRAG_ATTRIB_PNTC][1] = 0.0;
+            span.attrStepY[FRAG_ATTRIB_PNTC][0] = 0.0;
+            span.attrStepY[FRAG_ATTRIB_PNTC][1] = dtdy;
+            tCoords[numTcoords++] = FRAG_ATTRIB_PNTC;
+            continue;
+         }
+         /* use vertex's texcoord/attrib */
+         COPY_4V(span.attrStart[attr], vert->attrib[attr]);
+         ASSIGN_4V(span.attrStepX[attr], 0, 0, 0, 0);
+         ASSIGN_4V(span.attrStepY[attr], 0, 0, 0, 0);
+      ATTRIB_LOOP_END;
+   }
+
+   /* compute pos, bounds and render */
+   {
+      const GLfloat x = vert->attrib[FRAG_ATTRIB_WPOS][0];
+      const GLfloat y = vert->attrib[FRAG_ATTRIB_WPOS][1];
+      GLint iSize = (GLint) (size + 0.5F);
+      GLint xmin, xmax, ymin, ymax, iy;
+      GLint iRadius;
+      GLfloat tcoord = t0;
+
+      iSize = MAX2(1, iSize);
+      iRadius = iSize / 2;
+
+      if (iSize & 1) {
+         /* odd size */
+         xmin = (GLint) (x - iRadius);
+         xmax = (GLint) (x + iRadius);
+         ymin = (GLint) (y - iRadius);
+         ymax = (GLint) (y + iRadius);
+      }
+      else {
+         /* even size */
+         /* 0.501 factor allows conformance to pass */
+         xmin = (GLint) (x + 0.501) - iRadius;
+         xmax = xmin + iSize - 1;
+         ymin = (GLint) (y + 0.501) - iRadius;
+         ymax = ymin + iSize - 1;
+      }
+
+      /* render spans */
+      for (iy = ymin; iy <= ymax; iy++) {
+         GLuint i;
+         /* setup texcoord T for this row */
+         for (i = 0; i < numTcoords; i++) {
+            span.attrStart[tCoords[i]][1] = tcoord;
+         }
+
+         /* these might get changed by span clipping */
+         span.x = xmin;
+         span.y = iy;
+         span.end = xmax - xmin + 1;
+
+         _swrast_write_rgba_span(ctx, &span);
+
+         tcoord += dtdy;
+      }
+   }
+}
+
+
+/**
+ * Draw smooth/antialiased point.  RGB or CI mode.
+ */
+static void
+smooth_point(struct gl_context *ctx, const SWvertex *vert)
+{
+   SWcontext *swrast = SWRAST_CONTEXT(ctx);
+   SWspan span;
+   GLfloat size, alphaAtten;
+
+   CULL_INVALID(vert);
+
+   /* z coord */
+   if (ctx->DrawBuffer->Visual.depthBits <= 16)
+      span.z = FloatToFixed(vert->attrib[FRAG_ATTRIB_WPOS][2] + 0.5F);
+   else
+      span.z = (GLuint) (vert->attrib[FRAG_ATTRIB_WPOS][2] + 0.5F);
+   span.zStep = 0;
+
+   size = get_size(ctx, vert, GL_TRUE);
+
+   /* alpha attenuation / fade factor */
+   if (ctx->Multisample._Enabled) {
+      if (vert->pointSize >= ctx->Point.Threshold) {
+         alphaAtten = 1.0F;
+      }
+      else {
+         GLfloat dsize = vert->pointSize / ctx->Point.Threshold;
+         alphaAtten = dsize * dsize;
+      }
+   }
+   else {
+      alphaAtten = 1.0;
+   }
+   (void) alphaAtten; /* not used */
+
+   /* span init */
+   INIT_SPAN(span, GL_POINT);
+   span.interpMask = SPAN_Z | SPAN_RGBA;
+   span.arrayMask = SPAN_COVERAGE | SPAN_MASK;
+
+   span.facing = swrast->PointLineFacing;
+
+   span.red   = ChanToFixed(vert->color[0]);
+   span.green = ChanToFixed(vert->color[1]);
+   span.blue  = ChanToFixed(vert->color[2]);
+   span.alpha = ChanToFixed(vert->color[3]);
+   span.redStep = 0;
+   span.greenStep = 0;
+   span.blueStep = 0;
+   span.alphaStep = 0;
+
+   /* need these for fragment programs */
+   span.attrStart[FRAG_ATTRIB_WPOS][3] = 1.0F;
+   span.attrStepX[FRAG_ATTRIB_WPOS][3] = 0.0F;
+   span.attrStepY[FRAG_ATTRIB_WPOS][3] = 0.0F;
+
+   ATTRIB_LOOP_BEGIN
+      COPY_4V(span.attrStart[attr], vert->attrib[attr]);
+      ASSIGN_4V(span.attrStepX[attr], 0, 0, 0, 0);
+      ASSIGN_4V(span.attrStepY[attr], 0, 0, 0, 0);
+   ATTRIB_LOOP_END
+
+   /* compute pos, bounds and render */
+   {
+      const GLfloat x = vert->attrib[FRAG_ATTRIB_WPOS][0];
+      const GLfloat y = vert->attrib[FRAG_ATTRIB_WPOS][1];
+      const GLfloat radius = 0.5F * size;
+      const GLfloat rmin = radius - 0.7071F;  /* 0.7071 = sqrt(2)/2 */
+      const GLfloat rmax = radius + 0.7071F;
+      const GLfloat rmin2 = MAX2(0.0F, rmin * rmin);
+      const GLfloat rmax2 = rmax * rmax;
+      const GLfloat cscale = 1.0F / (rmax2 - rmin2);
+      const GLint xmin = (GLint) (x - radius);
+      const GLint xmax = (GLint) (x + radius);
+      const GLint ymin = (GLint) (y - radius);
+      const GLint ymax = (GLint) (y + radius);
+      GLint ix, iy;
+
+      for (iy = ymin; iy <= ymax; iy++) {
+
+         /* these might get changed by span clipping */
+         span.x = xmin;
+         span.y = iy;
+         span.end = xmax - xmin + 1;
+
+         /* compute coverage for each pixel in span */
+         for (ix = xmin; ix <= xmax; ix++) {
+            const GLfloat dx = ix - x + 0.5F;
+            const GLfloat dy = iy - y + 0.5F;
+            const GLfloat dist2 = dx * dx + dy * dy;
+            GLfloat coverage;
+
+            if (dist2 < rmax2) {
+               if (dist2 >= rmin2) {
+                  /* compute partial coverage */
+                  coverage = 1.0F - (dist2 - rmin2) * cscale;
+               }
+               else {
+                  /* full coverage */
+                  coverage = 1.0F;
+               }
+               span.array->mask[ix - xmin] = 1;
+            }
+            else {
+               /* zero coverage - fragment outside the radius */
+               coverage = 0.0;
+               span.array->mask[ix - xmin] = 0;
+            }
+            span.array->coverage[ix - xmin] = coverage;
+         }
+
+         /* render span */
+         _swrast_write_rgba_span(ctx, &span);
+
+      }
+   }
+}
+
+
+/**
+ * Draw large (size >= 1) non-AA point.  RGB or CI mode.
+ */
+static void
+large_point(struct gl_context *ctx, const SWvertex *vert)
+{
+   SWcontext *swrast = SWRAST_CONTEXT(ctx);
+   SWspan span;
+   GLfloat size;
+
+   CULL_INVALID(vert);
+
+   /* z coord */
+   if (ctx->DrawBuffer->Visual.depthBits <= 16)
+      span.z = FloatToFixed(vert->attrib[FRAG_ATTRIB_WPOS][2] + 0.5F);
+   else
+      span.z = (GLuint) (vert->attrib[FRAG_ATTRIB_WPOS][2] + 0.5F);
+   span.zStep = 0;
+
+   size = get_size(ctx, vert, GL_FALSE);
+
+   /* span init */
+   INIT_SPAN(span, GL_POINT);
+   span.arrayMask = SPAN_XY;
+   span.facing = swrast->PointLineFacing;
+
+   span.interpMask = SPAN_Z | SPAN_RGBA;
+   span.red   = ChanToFixed(vert->color[0]);
+   span.green = ChanToFixed(vert->color[1]);
+   span.blue  = ChanToFixed(vert->color[2]);
+   span.alpha = ChanToFixed(vert->color[3]);
+   span.redStep = 0;
+   span.greenStep = 0;
+   span.blueStep = 0;
+   span.alphaStep = 0;
+
+   /* need these for fragment programs */
+   span.attrStart[FRAG_ATTRIB_WPOS][3] = 1.0F;
+   span.attrStepX[FRAG_ATTRIB_WPOS][3] = 0.0F;
+   span.attrStepY[FRAG_ATTRIB_WPOS][3] = 0.0F;
+
+   ATTRIB_LOOP_BEGIN
+      COPY_4V(span.attrStart[attr], vert->attrib[attr]);
+      ASSIGN_4V(span.attrStepX[attr], 0, 0, 0, 0);
+      ASSIGN_4V(span.attrStepY[attr], 0, 0, 0, 0);
+   ATTRIB_LOOP_END
+
+   /* compute pos, bounds and render */
+   {
+      const GLfloat x = vert->attrib[FRAG_ATTRIB_WPOS][0];
+      const GLfloat y = vert->attrib[FRAG_ATTRIB_WPOS][1];
+      GLint iSize = (GLint) (size + 0.5F);
+      GLint xmin, xmax, ymin, ymax, ix, iy;
+      GLint iRadius;
+
+      iSize = MAX2(1, iSize);
+      iRadius = iSize / 2;
+
+      if (iSize & 1) {
+         /* odd size */
+         xmin = (GLint) (x - iRadius);
+         xmax = (GLint) (x + iRadius);
+         ymin = (GLint) (y - iRadius);
+         ymax = (GLint) (y + iRadius);
+      }
+      else {
+         /* even size */
+         /* 0.501 factor allows conformance to pass */
+         xmin = (GLint) (x + 0.501) - iRadius;
+         xmax = xmin + iSize - 1;
+         ymin = (GLint) (y + 0.501) - iRadius;
+         ymax = ymin + iSize - 1;
+      }
+
+      /* generate fragments */
+      span.end = 0;
+      for (iy = ymin; iy <= ymax; iy++) {
+         for (ix = xmin; ix <= xmax; ix++) {
+            span.array->x[span.end] = ix;
+            span.array->y[span.end] = iy;
+            span.end++;
+         }
+      }
+      assert(span.end <= MAX_WIDTH);
+      _swrast_write_rgba_span(ctx, &span);
+   }
+}
+
+
+/**
+ * Draw size=1, single-pixel point
+ */
+static void
+pixel_point(struct gl_context *ctx, const SWvertex *vert)
+{
+   SWcontext *swrast = SWRAST_CONTEXT(ctx);
+   /*
+    * Note that unlike the other functions, we put single-pixel points
+    * into a special span array in order to render as many points as
+    * possible with a single _swrast_write_rgba_span() call.
+    */
+   SWspan *span = &(swrast->PointSpan);
+   GLuint count;
+
+   CULL_INVALID(vert);
+
+   /* Span init */
+   span->interpMask = 0;
+   span->arrayMask = SPAN_XY | SPAN_Z;
+   span->arrayMask |= SPAN_RGBA;
+   /*span->arrayMask |= SPAN_LAMBDA;*/
+   span->arrayAttribs = swrast->_ActiveAttribMask; /* we'll produce these vals */
+
+   /* need these for fragment programs */
+   span->attrStart[FRAG_ATTRIB_WPOS][3] = 1.0F;
+   span->attrStepX[FRAG_ATTRIB_WPOS][3] = 0.0F;
+   span->attrStepY[FRAG_ATTRIB_WPOS][3] = 0.0F;
+
+   /* check if we need to flush */
+   if (span->end >= MAX_WIDTH ||
+       (swrast->_RasterMask & (BLEND_BIT | LOGIC_OP_BIT | MASKING_BIT)) ||
+       span->facing != swrast->PointLineFacing) {
+      if (span->end > 0) {
+	 _swrast_write_rgba_span(ctx, span);
+         span->end = 0;
+      }
+   }
+
+   count = span->end;
+
+   span->facing = swrast->PointLineFacing;
+
+   /* fragment attributes */
+   span->array->rgba[count][RCOMP] = vert->color[0];
+   span->array->rgba[count][GCOMP] = vert->color[1];
+   span->array->rgba[count][BCOMP] = vert->color[2];
+   span->array->rgba[count][ACOMP] = vert->color[3];
+
+   ATTRIB_LOOP_BEGIN
+      COPY_4V(span->array->attribs[attr][count], vert->attrib[attr]);
+   ATTRIB_LOOP_END
+
+   /* fragment position */
+   span->array->x[count] = (GLint) vert->attrib[FRAG_ATTRIB_WPOS][0];
+   span->array->y[count] = (GLint) vert->attrib[FRAG_ATTRIB_WPOS][1];
+   span->array->z[count] = (GLint) (vert->attrib[FRAG_ATTRIB_WPOS][2] + 0.5F);
+
+   span->end = count + 1;
+   ASSERT(span->end <= MAX_WIDTH);
+}
+
+
+/**
+ * Add specular color to primary color, draw point, restore original
+ * primary color.
+ */
+void
+_swrast_add_spec_terms_point(struct gl_context *ctx, const SWvertex *v0)
+{
+   SWvertex *ncv0 = (SWvertex *) v0; /* cast away const */
+   GLfloat rSum, gSum, bSum;
+   GLchan cSave[4];
+
+   /* save */
+   COPY_CHAN4(cSave, ncv0->color);
+   /* sum */
+   rSum = CHAN_TO_FLOAT(ncv0->color[0]) + ncv0->attrib[FRAG_ATTRIB_COL1][0];
+   gSum = CHAN_TO_FLOAT(ncv0->color[1]) + ncv0->attrib[FRAG_ATTRIB_COL1][1];
+   bSum = CHAN_TO_FLOAT(ncv0->color[2]) + ncv0->attrib[FRAG_ATTRIB_COL1][2];
+   UNCLAMPED_FLOAT_TO_CHAN(ncv0->color[0], rSum);
+   UNCLAMPED_FLOAT_TO_CHAN(ncv0->color[1], gSum);
+   UNCLAMPED_FLOAT_TO_CHAN(ncv0->color[2], bSum);
+   /* draw */
+   SWRAST_CONTEXT(ctx)->SpecPoint(ctx, ncv0);
+   /* restore */
+   COPY_CHAN4(ncv0->color, cSave);
+}
+
+
+/**
+ * Examine current state to determine which point drawing function to use.
+ */
+void
+_swrast_choose_point(struct gl_context *ctx)
+{
+   SWcontext *swrast = SWRAST_CONTEXT(ctx);
+   const GLfloat size = CLAMP(ctx->Point.Size,
+                              ctx->Point.MinSize,
+                              ctx->Point.MaxSize);
+
+   if (ctx->RenderMode == GL_RENDER) {
+      if (ctx->Point.PointSprite) {
+         swrast->Point = sprite_point;
+      }
+      else if (ctx->Point.SmoothFlag) {
+         swrast->Point = smooth_point;
+      }
+      else if (size > 1.0 ||
+               ctx->Point._Attenuated ||
+               ctx->VertexProgram.PointSizeEnabled) {
+         swrast->Point = large_point;
+      }
+      else {
+         swrast->Point = pixel_point;
+      }
+   }
+   else if (ctx->RenderMode == GL_FEEDBACK) {
+      swrast->Point = _swrast_feedback_point;
+   }
+   else {
+      /* GL_SELECT mode */
+      swrast->Point = _swrast_select_point;
+   }
+}
diff --git a/mesalib/src/mesa/swrast/s_span.c b/mesalib/src/mesa/swrast/s_span.c
index 4631ff3d5..1aa20f9d7 100644
--- a/mesalib/src/mesa/swrast/s_span.c
+++ b/mesalib/src/mesa/swrast/s_span.c
@@ -162,7 +162,7 @@ _swrast_span_default_attribs(struct gl_context *ctx, SWspan *span)
  * Perspective correction will be done.  The point/line/triangle function
  * should have computed attrStart/Step values for FRAG_ATTRIB_WPOS[3]!
  */
-static INLINE void
+static inline void
 interpolate_active_attribs(struct gl_context *ctx, SWspan *span, GLbitfield attrMask)
 {
    const SWcontext *swrast = SWRAST_CONTEXT(ctx);
@@ -209,7 +209,7 @@ interpolate_active_attribs(struct gl_context *ctx, SWspan *span, GLbitfield attr
  * Interpolate primary colors to fill in the span->array->rgba8 (or rgb16)
  * color array.
  */
-static INLINE void
+static inline void
 interpolate_int_colors(struct gl_context *ctx, SWspan *span)
 {
 #if CHAN_BITS != 32
@@ -309,7 +309,7 @@ interpolate_int_colors(struct gl_context *ctx, SWspan *span)
 /**
  * Populate the FRAG_ATTRIB_COL0 array.
  */
-static INLINE void
+static inline void
 interpolate_float_colors(SWspan *span)
 {
    GLfloat (*col0)[4] = span->array->attribs[FRAG_ATTRIB_COL0];
@@ -611,7 +611,7 @@ interpolate_texcoords(struct gl_context *ctx, SWspan *span)
 /**
  * Fill in the arrays->attribs[FRAG_ATTRIB_WPOS] array.
  */
-static INLINE void
+static inline void
 interpolate_wpos(struct gl_context *ctx, SWspan *span)
 {
    GLfloat (*wpos)[4] = span->array->attribs[FRAG_ATTRIB_WPOS];
@@ -645,7 +645,7 @@ interpolate_wpos(struct gl_context *ctx, SWspan *span)
 /**
  * Apply the current polygon stipple pattern to a span of pixels.
  */
-static INLINE void
+static inline void
 stipple_polygon_span(struct gl_context *ctx, SWspan *span)
 {
    GLubyte *mask = span->array->mask;
@@ -690,7 +690,7 @@ stipple_polygon_span(struct gl_context *ctx, SWspan *span)
  * Return:   GL_TRUE   some pixels still visible
  *           GL_FALSE  nothing visible
  */
-static INLINE GLuint
+static inline GLuint
 clip_span( struct gl_context *ctx, SWspan *span )
 {
    const GLint xmin = ctx->DrawBuffer->_Xmin;
@@ -817,7 +817,7 @@ clip_span( struct gl_context *ctx, SWspan *span )
  * Only called during fixed-function operation.
  * Result is float color array (FRAG_ATTRIB_COL0).
  */
-static INLINE void
+static inline void
 add_specular(struct gl_context *ctx, SWspan *span)
 {
    const SWcontext *swrast = SWRAST_CONTEXT(ctx);
@@ -866,7 +866,7 @@ add_specular(struct gl_context *ctx, SWspan *span)
 /**
  * Apply antialiasing coverage value to alpha values.
  */
-static INLINE void
+static inline void
 apply_aa_coverage(SWspan *span)
 {
    const GLfloat *coverage = span->array->coverage;
@@ -900,7 +900,7 @@ apply_aa_coverage(SWspan *span)
 /**
  * Clamp span's float colors to [0,1]
  */
-static INLINE void
+static inline void
 clamp_colors(SWspan *span)
 {
    GLfloat (*rgba)[4] = span->array->attribs[FRAG_ATTRIB_COL0];
@@ -921,7 +921,7 @@ clamp_colors(SWspan *span)
  * program that writes to gl_FragData[1] or higher.
  * \param output  which fragment program color output is being processed
  */
-static INLINE void
+static inline void
 convert_color_type(SWspan *span, GLenum newType, GLuint output)
 {
    GLvoid *src, *dst;
@@ -961,7 +961,7 @@ convert_color_type(SWspan *span, GLenum newType, GLuint output)
 /**
  * Apply fragment shader, fragment program or normal texturing to span.
  */
-static INLINE void
+static inline void
 shade_texture_span(struct gl_context *ctx, SWspan *span)
 {
    if (ctx->FragmentProgram._Current ||
diff --git a/mesalib/src/mesa/swrast/s_stencil.c b/mesalib/src/mesa/swrast/s_stencil.c
index fa5093a34..e713e2393 100644
--- a/mesalib/src/mesa/swrast/s_stencil.c
+++ b/mesalib/src/mesa/swrast/s_stencil.c
@@ -391,7 +391,7 @@ do_stencil_test( struct gl_context *ctx, GLuint face, GLuint n, GLstencil stenci
  * Compute the zpass/zfail masks by comparing the pre- and post-depth test
  * masks.
  */
-static INLINE void
+static inline void
 compute_pass_fail_masks(GLuint n, const GLubyte origMask[],
                         const GLubyte newMask[],
                         GLubyte passMask[], GLubyte failMask[])
diff --git a/mesalib/src/mesa/swrast/s_texcombine.c b/mesalib/src/mesa/swrast/s_texcombine.c
index 80b9dff3c..c67c356c1 100644
--- a/mesalib/src/mesa/swrast/s_texcombine.c
+++ b/mesalib/src/mesa/swrast/s_texcombine.c
@@ -45,7 +45,7 @@ typedef float (*float4_array)[4];
 /**
  * Return array of texels for given unit.
  */
-static INLINE float4_array
+static inline float4_array
 get_texel_array(SWcontext *swrast, GLuint unit)
 {
 #ifdef _OPENMP
@@ -590,6 +590,26 @@ _swrast_texture_span( struct gl_context *ctx, SWspan *span )
    float4_array primary_rgba;
    GLuint unit;
 
+   if (!swrast->TexelBuffer) {
+#ifdef _OPENMP
+      const GLint maxThreads = omp_get_max_threads();
+#else
+      const GLint maxThreads = 1;
+#endif
+
+      /* TexelBuffer is also global and normally shared by all SWspan
+       * instances; when running with multiple threads, create one per
+       * thread.
+       */
+      swrast->TexelBuffer =
+	 (GLfloat *) MALLOC(ctx->Const.MaxTextureImageUnits * maxThreads *
+			    MAX_WIDTH * 4 * sizeof(GLfloat));
+      if (!swrast->TexelBuffer) {
+	 _mesa_error(ctx, GL_OUT_OF_MEMORY, "texture_combine");
+	 return;
+      }
+   }
+
    primary_rgba = (float4_array) malloc(span->end * 4 * sizeof(GLfloat));
 
    if (!primary_rgba) {
diff --git a/mesalib/src/mesa/swrast/s_texfetch.c b/mesalib/src/mesa/swrast/s_texfetch.c
index ed17b4bda..73b5af319 100644
--- a/mesalib/src/mesa/swrast/s_texfetch.c
+++ b/mesalib/src/mesa/swrast/s_texfetch.c
@@ -51,7 +51,7 @@
  * linear RGB value in [0, 1].
  * Implemented with a 256-entry lookup table.
  */
-static INLINE GLfloat
+static inline GLfloat
 nonlinear_to_linear(GLubyte cs8)
 {
    static GLfloat table[256];
diff --git a/mesalib/src/mesa/swrast/s_texfilter.c b/mesalib/src/mesa/swrast/s_texfilter.c
index dd3761986..ca9133b21 100644
--- a/mesalib/src/mesa/swrast/s_texfilter.c
+++ b/mesalib/src/mesa/swrast/s_texfilter.c
@@ -57,7 +57,7 @@
  * optimization!  If we find that's not true on some systems, convert
  * to a macro.
  */
-static INLINE GLfloat
+static inline GLfloat
 lerp_2d(GLfloat a, GLfloat b,
         GLfloat v00, GLfloat v10, GLfloat v01, GLfloat v11)
 {
@@ -71,7 +71,7 @@ lerp_2d(GLfloat a, GLfloat b,
  * Do 3D/trilinear interpolation of float values.
  * \sa lerp_2d
  */
-static INLINE GLfloat
+static inline GLfloat
 lerp_3d(GLfloat a, GLfloat b, GLfloat c,
         GLfloat v000, GLfloat v100, GLfloat v010, GLfloat v110,
         GLfloat v001, GLfloat v101, GLfloat v011, GLfloat v111)
@@ -89,7 +89,7 @@ lerp_3d(GLfloat a, GLfloat b, GLfloat c,
 /**
  * Do linear interpolation of colors.
  */
-static INLINE void
+static inline void
 lerp_rgba(GLfloat result[4], GLfloat t, const GLfloat a[4], const GLfloat b[4])
 {
    result[0] = LERP(t, a[0], b[0]);
@@ -102,7 +102,7 @@ lerp_rgba(GLfloat result[4], GLfloat t, const GLfloat a[4], const GLfloat b[4])
 /**
  * Do bilinear interpolation of colors.
  */
-static INLINE void
+static inline void
 lerp_rgba_2d(GLfloat result[4], GLfloat a, GLfloat b,
              const GLfloat t00[4], const GLfloat t10[4],
              const GLfloat t01[4], const GLfloat t11[4])
@@ -117,7 +117,7 @@ lerp_rgba_2d(GLfloat result[4], GLfloat a, GLfloat b,
 /**
  * Do trilinear interpolation of colors.
  */
-static INLINE void
+static inline void
 lerp_rgba_3d(GLfloat result[4], GLfloat a, GLfloat b, GLfloat c,
              const GLfloat t000[4], const GLfloat t100[4],
              const GLfloat t010[4], const GLfloat t110[4],
@@ -153,7 +153,7 @@ lerp_rgba_3d(GLfloat result[4], GLfloat a, GLfloat b, GLfloat c,
  *    i0, i1 = returns two nearest texel indexes
  *    weight = returns blend factor between texels
  */
-static INLINE void
+static inline void
 linear_texel_locations(GLenum wrapMode,
                        const struct gl_texture_image *img,
                        GLint size, GLfloat s,
@@ -281,7 +281,7 @@ linear_texel_locations(GLenum wrapMode,
 /**
  * Used to compute texel location for nearest sampling.
  */
-static INLINE GLint
+static inline GLint
 nearest_texel_location(GLenum wrapMode,
                        const struct gl_texture_image *img,
                        GLint size, GLfloat s)
@@ -406,7 +406,7 @@ nearest_texel_location(GLenum wrapMode,
 
 
 /* Power of two image sizes only */
-static INLINE void
+static inline void
 linear_repeat_texel_location(GLuint size, GLfloat s,
                              GLint *i0, GLint *i1, GLfloat *weight)
 {
@@ -420,7 +420,7 @@ linear_repeat_texel_location(GLuint size, GLfloat s,
 /**
  * Do clamp/wrap for a texture rectangle coord, GL_NEAREST filter mode.
  */
-static INLINE GLint
+static inline GLint
 clamp_rect_coord_nearest(GLenum wrapMode, GLfloat coord, GLint max)
 {
    switch (wrapMode) {
@@ -440,7 +440,7 @@ clamp_rect_coord_nearest(GLenum wrapMode, GLfloat coord, GLint max)
 /**
  * As above, but GL_LINEAR filtering.
  */
-static INLINE void
+static inline void
 clamp_rect_coord_linear(GLenum wrapMode, GLfloat coord, GLint max,
                         GLint *i0out, GLint *i1out, GLfloat *weight)
 {
@@ -481,7 +481,7 @@ clamp_rect_coord_linear(GLenum wrapMode, GLfloat coord, GLint max,
 /**
  * Compute slice/image to use for 1D or 2D array texture.
  */
-static INLINE GLint
+static inline GLint
 tex_array_slice(GLfloat coord, GLsizei size)
 {
    GLint slice = IFLOOR(coord + 0.5f);
@@ -494,7 +494,7 @@ tex_array_slice(GLfloat coord, GLsizei size)
  * Compute nearest integer texcoords for given texobj and coordinate.
  * NOTE: only used for depth texture sampling.
  */
-static INLINE void
+static inline void
 nearest_texcoord(const struct gl_texture_object *texObj,
                  GLuint level,
                  const GLfloat texcoord[4],
@@ -541,7 +541,7 @@ nearest_texcoord(const struct gl_texture_object *texObj,
  * Compute linear integer texcoords for given texobj and coordinate.
  * NOTE: only used for depth texture sampling.
  */
-static INLINE void
+static inline void
 linear_texcoord(const struct gl_texture_object *texObj,
                 GLuint level,
                 const GLfloat texcoord[4],
@@ -598,7 +598,7 @@ linear_texcoord(const struct gl_texture_object *texObj,
  * For linear interpolation between mipmap levels N and N+1, this function
  * computes N.
  */
-static INLINE GLint
+static inline GLint
 linear_mipmap_level(const struct gl_texture_object *tObj, GLfloat lambda)
 {
    if (lambda < 0.0F)
@@ -613,7 +613,7 @@ linear_mipmap_level(const struct gl_texture_object *tObj, GLfloat lambda)
 /**
  * Compute the nearest mipmap level to take texels from.
  */
-static INLINE GLint
+static inline GLint
 nearest_mipmap_level(const struct gl_texture_object *tObj, GLfloat lambda)
 {
    GLfloat l;
@@ -649,7 +649,7 @@ nearest_mipmap_level(const struct gl_texture_object *tObj, GLfloat lambda)
  * will be minified, magnified, or split between the two.  This function
  * determines the subranges in [0, n-1] that are to be minified or magnified.
  */
-static INLINE void
+static inline void
 compute_min_mag_ranges(const struct gl_texture_object *tObj,
                        GLuint n, const GLfloat lambda[],
                        GLuint *minStart, GLuint *minEnd,
@@ -758,7 +758,7 @@ compute_min_mag_ranges(const struct gl_texture_object *tObj,
  * the base texture format.  Ex: if the texture base format it GL_ALPHA,
  * we return (0,0,0,BorderAlpha).
  */
-static INLINE void
+static inline void
 get_border_color(const struct gl_texture_object *tObj,
                  const struct gl_texture_image *img,
                  GLfloat rgba[4])
@@ -798,7 +798,7 @@ get_border_color(const struct gl_texture_object *tObj,
 /**
  * Return the texture sample for coordinate (s) using GL_NEAREST filter.
  */
-static INLINE void
+static inline void
 sample_1d_nearest(struct gl_context *ctx,
                   const struct gl_texture_object *tObj,
                   const struct gl_texture_image *img,
@@ -823,7 +823,7 @@ sample_1d_nearest(struct gl_context *ctx,
 /**
  * Return the texture sample for coordinate (s) using GL_LINEAR filter.
  */
-static INLINE void
+static inline void
 sample_1d_linear(struct gl_context *ctx,
                  const struct gl_texture_object *tObj,
                  const struct gl_texture_image *img,
@@ -1057,7 +1057,7 @@ sample_lambda_1d( struct gl_context *ctx,
 /**
  * Return the texture sample for coordinate (s,t) using GL_NEAREST filter.
  */
-static INLINE void
+static inline void
 sample_2d_nearest(struct gl_context *ctx,
                   const struct gl_texture_object *tObj,
                   const struct gl_texture_image *img,
@@ -1091,7 +1091,7 @@ sample_2d_nearest(struct gl_context *ctx,
  * Return the texture sample for coordinate (s,t) using GL_LINEAR filter.
  * New sampling code contributed by Lynn Quam <quam@ai.sri.com>.
  */
-static INLINE void
+static inline void
 sample_2d_linear(struct gl_context *ctx,
                  const struct gl_texture_object *tObj,
                  const struct gl_texture_image *img,
@@ -1156,7 +1156,7 @@ sample_2d_linear(struct gl_context *ctx,
  * As above, but we know WRAP_S == REPEAT and WRAP_T == REPEAT.
  * We don't have to worry about the texture border.
  */
-static INLINE void
+static inline void
 sample_2d_linear_repeat(struct gl_context *ctx,
                         const struct gl_texture_object *tObj,
                         const struct gl_texture_image *img,
@@ -1760,7 +1760,7 @@ sample_2d_footprint(struct gl_context *ctx,
  * Returns the index of the specified texture object in the
  * gl_context texture unit array.
  */
-static INLINE GLuint
+static inline GLuint
 texture_unit_index(const struct gl_context *ctx,
                    const struct gl_texture_object *tObj)
 {
@@ -1941,7 +1941,7 @@ sample_lambda_2d_aniso(struct gl_context *ctx,
 /**
  * Return the texture sample for coordinate (s,t,r) using GL_NEAREST filter.
  */
-static INLINE void
+static inline void
 sample_3d_nearest(struct gl_context *ctx,
                   const struct gl_texture_object *tObj,
                   const struct gl_texture_image *img,
@@ -3282,7 +3282,7 @@ sample_lambda_1d_array(struct gl_context *ctx,
 /**
  * Compare texcoord against depth sample.  Return 1.0 or the ambient value.
  */
-static INLINE GLfloat
+static inline GLfloat
 shadow_compare(GLenum function, GLfloat coord, GLfloat depthSample,
                GLfloat ambient)
 {
@@ -3315,7 +3315,7 @@ shadow_compare(GLenum function, GLfloat coord, GLfloat depthSample,
 /**
  * Compare texcoord against four depth samples.
  */
-static INLINE GLfloat
+static inline GLfloat
 shadow_compare4(GLenum function, GLfloat coord,
                 GLfloat depth00, GLfloat depth01,
                 GLfloat depth10, GLfloat depth11,
diff --git a/mesalib/src/mesa/swrast/s_texture.c b/mesalib/src/mesa/swrast/s_texture.c
index aa073753f..36b429cfa 100644
--- a/mesalib/src/mesa/swrast/s_texture.c
+++ b/mesalib/src/mesa/swrast/s_texture.c
@@ -177,6 +177,13 @@ _swrast_map_teximage(struct gl_context *ctx,
                                                  1);
       assert(slice < texImage->Depth);
       map += slice * sliceSize;
+   } else if (texImage->TexObject->Target == GL_TEXTURE_1D_ARRAY) {
+      GLuint sliceSize = _mesa_format_image_size(texImage->TexFormat,
+                                                 texImage->Width,
+                                                 1,
+                                                 1);
+      assert(slice < texImage->Height);
+      map += slice * sliceSize;
    }
 
    /* apply x/y offset to map address */
diff --git a/mesalib/src/mesa/swrast/s_triangle.c b/mesalib/src/mesa/swrast/s_triangle.c
index 77bd2a359..839c4fd08 100644
--- a/mesalib/src/mesa/swrast/s_triangle.c
+++ b/mesalib/src/mesa/swrast/s_triangle.c
@@ -237,13 +237,13 @@ struct affine_info
 };
 
 
-static INLINE GLint
+static inline GLint
 ilerp(GLint t, GLint a, GLint b)
 {
    return a + ((t * (b - a)) >> FIXED_SHIFT);
 }
 
-static INLINE GLint
+static inline GLint
 ilerp_2d(GLint ia, GLint ib, GLint v00, GLint v10, GLint v01, GLint v11)
 {
    const GLint temp0 = ilerp(ia, v00, v10);
@@ -256,7 +256,7 @@ ilerp_2d(GLint ia, GLint ib, GLint v00, GLint v10, GLint v01, GLint v11)
  * textures with GL_REPLACE, GL_MODULATE, GL_BLEND, GL_DECAL or GL_ADD
  * texture env modes.
  */
-static INLINE void
+static inline void
 affine_span(struct gl_context *ctx, SWspan *span,
             struct affine_info *info)
 {
@@ -591,7 +591,7 @@ struct persp_info
 };
 
 
-static INLINE void
+static inline void
 fast_persp_span(struct gl_context *ctx, SWspan *span,
 		struct persp_info *info)
 {
diff --git a/mesalib/src/mesa/swrast/s_zoom.c b/mesalib/src/mesa/swrast/s_zoom.c
index 3b99bf754..3fb784847 100644
--- a/mesalib/src/mesa/swrast/s_zoom.c
+++ b/mesalib/src/mesa/swrast/s_zoom.c
@@ -1,433 +1,433 @@
-/*

- * Mesa 3-D graphics library

- * Version:  7.1

- *

- * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.

- *

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the "Software"),

- * to deal in the Software without restriction, including without limitation

- * the rights to use, copy, modify, merge, publish, distribute, sublicense,

- * and/or sell copies of the Software, and to permit persons to whom the

- * Software is furnished to do so, subject to the following conditions:

- *

- * The above copyright notice and this permission notice shall be included

- * in all copies or substantial portions of the Software.

- *

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

- */

-

-#include "main/glheader.h"

-#include "main/macros.h"

-#include "main/imports.h"

-#include "main/colormac.h"

-

-#include "s_context.h"

-#include "s_span.h"

-#include "s_stencil.h"

-#include "s_zoom.h"

-

-

-/**

- * Compute the bounds of the region resulting from zooming a pixel span.

- * The resulting region will be entirely inside the window/scissor bounds

- * so no additional clipping is needed.

- * \param imageX, imageY  position of the mage being drawn (gl WindowPos)

- * \param spanX, spanY  position of span being drawing

- * \param width  number of pixels in span

- * \param x0, x1  returned X bounds of zoomed region [x0, x1)

- * \param y0, y1  returned Y bounds of zoomed region [y0, y1)

- * \return GL_TRUE if any zoomed pixels visible, GL_FALSE if totally clipped

- */

-static GLboolean

-compute_zoomed_bounds(struct gl_context *ctx, GLint imageX, GLint imageY,

-                      GLint spanX, GLint spanY, GLint width,

-                      GLint *x0, GLint *x1, GLint *y0, GLint *y1)

-{

-   const struct gl_framebuffer *fb = ctx->DrawBuffer;

-   GLint c0, c1, r0, r1;

-

-   ASSERT(spanX >= imageX);

-   ASSERT(spanY >= imageY);

-

-   /*

-    * Compute destination columns: [c0, c1)

-    */

-   c0 = imageX + (GLint) ((spanX - imageX) * ctx->Pixel.ZoomX);

-   c1 = imageX + (GLint) ((spanX + width - imageX) * ctx->Pixel.ZoomX);

-   if (c1 < c0) {

-      /* swap */

-      GLint tmp = c1;

-      c1 = c0;

-      c0 = tmp;

-   }

-   c0 = CLAMP(c0, fb->_Xmin, fb->_Xmax);

-   c1 = CLAMP(c1, fb->_Xmin, fb->_Xmax);

-   if (c0 == c1) {

-      return GL_FALSE; /* no width */

-   }

-

-   /*

-    * Compute destination rows: [r0, r1)

-    */

-   r0 = imageY + (GLint) ((spanY - imageY) * ctx->Pixel.ZoomY);

-   r1 = imageY + (GLint) ((spanY + 1 - imageY) * ctx->Pixel.ZoomY);

-   if (r1 < r0) {

-      /* swap */

-      GLint tmp = r1;

-      r1 = r0;

-      r0 = tmp;

-   }

-   r0 = CLAMP(r0, fb->_Ymin, fb->_Ymax);

-   r1 = CLAMP(r1, fb->_Ymin, fb->_Ymax);

-   if (r0 == r1) {

-      return GL_FALSE; /* no height */

-   }

-

-   *x0 = c0;

-   *x1 = c1;

-   *y0 = r0;

-   *y1 = r1;

-

-   return GL_TRUE;

-}

-

-

-/**

- * Convert a zoomed x image coordinate back to an unzoomed x coord.

- * 'zx' is screen position of a pixel in the zoomed image, who's left edge

- * is at 'imageX'.

- * return corresponding x coord in the original, unzoomed image.

- * This can use this for unzooming X or Y values.

- */

-static INLINE GLint

-unzoom_x(GLfloat zoomX, GLint imageX, GLint zx)

-{

-   /*

-   zx = imageX + (x - imageX) * zoomX;

-   zx - imageX = (x - imageX) * zoomX;

-   (zx - imageX) / zoomX = x - imageX;

-   */

-   GLint x;

-   if (zoomX < 0.0)

-      zx++;

-   x = imageX + (GLint) ((zx - imageX) / zoomX);

-   return x;

-}

-

-

-

-/**

- * Helper function called from _swrast_write_zoomed_rgba/rgb/

- * index/depth_span().

- */

-static void

-zoom_span( struct gl_context *ctx, GLint imgX, GLint imgY, const SWspan *span,

-           const GLvoid *src, GLenum format )

-{

-   SWcontext *swrast = SWRAST_CONTEXT(ctx);

-   SWspan zoomed;

-   GLint x0, x1, y0, y1;

-   GLint zoomedWidth;

-

-   if (!compute_zoomed_bounds(ctx, imgX, imgY, span->x, span->y, span->end,

-                              &x0, &x1, &y0, &y1)) {

-      return;  /* totally clipped */

-   }

-

-   if (!swrast->ZoomedArrays) {

-      /* allocate on demand */

-      swrast->ZoomedArrays = (SWspanarrays *) CALLOC(sizeof(SWspanarrays));

-      if (!swrast->ZoomedArrays)

-         return;

-   }

-

-   zoomedWidth = x1 - x0;

-   ASSERT(zoomedWidth > 0);

-   ASSERT(zoomedWidth <= MAX_WIDTH);

-

-   /* no pixel arrays! must be horizontal spans. */

-   ASSERT((span->arrayMask & SPAN_XY) == 0);

-   ASSERT(span->primitive == GL_BITMAP);

-

-   INIT_SPAN(zoomed, GL_BITMAP);

-   zoomed.x = x0;

-   zoomed.end = zoomedWidth;

-   zoomed.array = swrast->ZoomedArrays;

-   zoomed.array->ChanType = span->array->ChanType;

-   if (zoomed.array->ChanType == GL_UNSIGNED_BYTE)

-      zoomed.array->rgba = (GLchan (*)[4]) zoomed.array->rgba8;

-   else if (zoomed.array->ChanType == GL_UNSIGNED_SHORT)

-      zoomed.array->rgba = (GLchan (*)[4]) zoomed.array->rgba16;

-   else

-      zoomed.array->rgba = (GLchan (*)[4]) zoomed.array->attribs[FRAG_ATTRIB_COL0];

-

-   COPY_4V(zoomed.attrStart[FRAG_ATTRIB_WPOS], span->attrStart[FRAG_ATTRIB_WPOS]);

-   COPY_4V(zoomed.attrStepX[FRAG_ATTRIB_WPOS], span->attrStepX[FRAG_ATTRIB_WPOS]);

-   COPY_4V(zoomed.attrStepY[FRAG_ATTRIB_WPOS], span->attrStepY[FRAG_ATTRIB_WPOS]);

-

-   zoomed.attrStart[FRAG_ATTRIB_FOGC][0] = span->attrStart[FRAG_ATTRIB_FOGC][0];

-   zoomed.attrStepX[FRAG_ATTRIB_FOGC][0] = span->attrStepX[FRAG_ATTRIB_FOGC][0];

-   zoomed.attrStepY[FRAG_ATTRIB_FOGC][0] = span->attrStepY[FRAG_ATTRIB_FOGC][0];

-

-   if (format == GL_RGBA || format == GL_RGB) {

-      /* copy Z info */

-      zoomed.z = span->z;

-      zoomed.zStep = span->zStep;

-      /* we'll generate an array of colorss */

-      zoomed.interpMask = span->interpMask & ~SPAN_RGBA;

-      zoomed.arrayMask |= SPAN_RGBA;

-      zoomed.arrayAttribs |= FRAG_BIT_COL0;  /* we'll produce these values */

-      ASSERT(span->arrayMask & SPAN_RGBA);

-   }

-   else if (format == GL_DEPTH_COMPONENT) {

-      /* Copy color info */

-      zoomed.red = span->red;

-      zoomed.green = span->green;

-      zoomed.blue = span->blue;

-      zoomed.alpha = span->alpha;

-      zoomed.redStep = span->redStep;

-      zoomed.greenStep = span->greenStep;

-      zoomed.blueStep = span->blueStep;

-      zoomed.alphaStep = span->alphaStep;

-      /* we'll generate an array of depth values */

-      zoomed.interpMask = span->interpMask & ~SPAN_Z;

-      zoomed.arrayMask |= SPAN_Z;

-      ASSERT(span->arrayMask & SPAN_Z);

-   }

-   else {

-      _mesa_problem(ctx, "Bad format in zoom_span");

-      return;

-   }

-

-   /* zoom the span horizontally */

-   if (format == GL_RGBA) {

-      if (zoomed.array->ChanType == GL_UNSIGNED_BYTE) {

-         const GLubyte (*rgba)[4] = (const GLubyte (*)[4]) src;

-         GLint i;

-         for (i = 0; i < zoomedWidth; i++) {

-            GLint j = unzoom_x(ctx->Pixel.ZoomX, imgX, x0 + i) - span->x;

-            ASSERT(j >= 0);

-            ASSERT(j < (GLint) span->end);

-            COPY_4UBV(zoomed.array->rgba8[i], rgba[j]);

-         }

-      }

-      else if (zoomed.array->ChanType == GL_UNSIGNED_SHORT) {

-         const GLushort (*rgba)[4] = (const GLushort (*)[4]) src;

-         GLint i;

-         for (i = 0; i < zoomedWidth; i++) {

-            GLint j = unzoom_x(ctx->Pixel.ZoomX, imgX, x0 + i) - span->x;

-            ASSERT(j >= 0);

-            ASSERT(j < (GLint) span->end);

-            COPY_4V(zoomed.array->rgba16[i], rgba[j]);

-         }

-      }

-      else {

-         const GLfloat (*rgba)[4] = (const GLfloat (*)[4]) src;

-         GLint i;

-         for (i = 0; i < zoomedWidth; i++) {

-            GLint j = unzoom_x(ctx->Pixel.ZoomX, imgX, x0 + i) - span->x;

-            ASSERT(j >= 0);

-            ASSERT(j < span->end);

-            COPY_4V(zoomed.array->attribs[FRAG_ATTRIB_COL0][i], rgba[j]);

-         }

-      }

-   }

-   else if (format == GL_RGB) {

-      if (zoomed.array->ChanType == GL_UNSIGNED_BYTE) {

-         const GLubyte (*rgb)[3] = (const GLubyte (*)[3]) src;

-         GLint i;

-         for (i = 0; i < zoomedWidth; i++) {

-            GLint j = unzoom_x(ctx->Pixel.ZoomX, imgX, x0 + i) - span->x;

-            ASSERT(j >= 0);

-            ASSERT(j < (GLint) span->end);

-            zoomed.array->rgba8[i][0] = rgb[j][0];

-            zoomed.array->rgba8[i][1] = rgb[j][1];

-            zoomed.array->rgba8[i][2] = rgb[j][2];

-            zoomed.array->rgba8[i][3] = 0xff;

-         }

-      }

-      else if (zoomed.array->ChanType == GL_UNSIGNED_SHORT) {

-         const GLushort (*rgb)[3] = (const GLushort (*)[3]) src;

-         GLint i;

-         for (i = 0; i < zoomedWidth; i++) {

-            GLint j = unzoom_x(ctx->Pixel.ZoomX, imgX, x0 + i) - span->x;

-            ASSERT(j >= 0);

-            ASSERT(j < (GLint) span->end);

-            zoomed.array->rgba16[i][0] = rgb[j][0];

-            zoomed.array->rgba16[i][1] = rgb[j][1];

-            zoomed.array->rgba16[i][2] = rgb[j][2];

-            zoomed.array->rgba16[i][3] = 0xffff;

-         }

-      }

-      else {

-         const GLfloat (*rgb)[3] = (const GLfloat (*)[3]) src;

-         GLint i;

-         for (i = 0; i < zoomedWidth; i++) {

-            GLint j = unzoom_x(ctx->Pixel.ZoomX, imgX, x0 + i) - span->x;

-            ASSERT(j >= 0);

-            ASSERT(j < span->end);

-            zoomed.array->attribs[FRAG_ATTRIB_COL0][i][0] = rgb[j][0];

-            zoomed.array->attribs[FRAG_ATTRIB_COL0][i][1] = rgb[j][1];

-            zoomed.array->attribs[FRAG_ATTRIB_COL0][i][2] = rgb[j][2];

-            zoomed.array->attribs[FRAG_ATTRIB_COL0][i][3] = 1.0F;

-         }

-      }

-   }

-   else if (format == GL_DEPTH_COMPONENT) {

-      const GLuint *zValues = (const GLuint *) src;

-      GLint i;

-      for (i = 0; i < zoomedWidth; i++) {

-         GLint j = unzoom_x(ctx->Pixel.ZoomX, imgX, x0 + i) - span->x;

-         ASSERT(j >= 0);

-         ASSERT(j < (GLint) span->end);

-         zoomed.array->z[i] = zValues[j];

-      }

-      /* Now, fall into the RGB path below */

-      format = GL_RGBA;

-   }

-

-   /* write the span in rows [r0, r1) */

-   if (format == GL_RGBA || format == GL_RGB) {

-      /* Writing the span may modify the colors, so make a backup now if we're

-       * going to call _swrast_write_zoomed_span() more than once.

-       * Also, clipping may change the span end value, so store it as well.

-       */

-      const GLint end = zoomed.end; /* save */

-      GLuint rgbaSave[MAX_WIDTH][4];

-      const GLint pixelSize =

-         (zoomed.array->ChanType == GL_UNSIGNED_BYTE) ? 4 * sizeof(GLubyte) :

-         ((zoomed.array->ChanType == GL_UNSIGNED_SHORT) ? 4 * sizeof(GLushort)

-          : 4 * sizeof(GLfloat));

-      if (y1 - y0 > 1) {

-         memcpy(rgbaSave, zoomed.array->rgba, zoomed.end * pixelSize);

-      }

-      for (zoomed.y = y0; zoomed.y < y1; zoomed.y++) {

-         _swrast_write_rgba_span(ctx, &zoomed);

-         zoomed.end = end;  /* restore */

-         if (y1 - y0 > 1) {

-            /* restore the colors */

-            memcpy(zoomed.array->rgba, rgbaSave, zoomed.end * pixelSize);

-         }

-      }

-   }

-}

-

-

-void

-_swrast_write_zoomed_rgba_span(struct gl_context *ctx, GLint imgX, GLint imgY,

-                               const SWspan *span, const GLvoid *rgba)

-{

-   zoom_span(ctx, imgX, imgY, span, rgba, GL_RGBA);

-}

-

-

-void

-_swrast_write_zoomed_rgb_span(struct gl_context *ctx, GLint imgX, GLint imgY,

-                              const SWspan *span, const GLvoid *rgb)

-{

-   zoom_span(ctx, imgX, imgY, span, rgb, GL_RGB);

-}

-

-

-void

-_swrast_write_zoomed_depth_span(struct gl_context *ctx, GLint imgX, GLint imgY,

-                                const SWspan *span)

-{

-   zoom_span(ctx, imgX, imgY, span,

-             (const GLvoid *) span->array->z, GL_DEPTH_COMPONENT);

-}

-

-

-/**

- * Zoom/write stencil values.

- * No per-fragment operations are applied.

- */

-void

-_swrast_write_zoomed_stencil_span(struct gl_context *ctx, GLint imgX, GLint imgY,

-                                  GLint width, GLint spanX, GLint spanY,

-                                  const GLstencil stencil[])

-{

-   GLstencil zoomedVals[MAX_WIDTH];

-   GLint x0, x1, y0, y1, y;

-   GLint i, zoomedWidth;

-

-   if (!compute_zoomed_bounds(ctx, imgX, imgY, spanX, spanY, width,

-                              &x0, &x1, &y0, &y1)) {

-      return;  /* totally clipped */

-   }

-

-   zoomedWidth = x1 - x0;

-   ASSERT(zoomedWidth > 0);

-   ASSERT(zoomedWidth <= MAX_WIDTH);

-

-   /* zoom the span horizontally */

-   for (i = 0; i < zoomedWidth; i++) {

-      GLint j = unzoom_x(ctx->Pixel.ZoomX, imgX, x0 + i) - spanX;

-      ASSERT(j >= 0);

-      ASSERT(j < width);

-      zoomedVals[i] = stencil[j];

-   }

-

-   /* write the zoomed spans */

-   for (y = y0; y < y1; y++) {

-      _swrast_write_stencil_span(ctx, zoomedWidth, x0, y, zoomedVals);

-   }

-}

-

-

-/**

- * Zoom/write z values (16 or 32-bit).

- * No per-fragment operations are applied.

- */

-void

-_swrast_write_zoomed_z_span(struct gl_context *ctx, GLint imgX, GLint imgY,

-                            GLint width, GLint spanX, GLint spanY,

-                            const GLvoid *z)

-{

-   struct gl_renderbuffer *rb = ctx->DrawBuffer->_DepthBuffer;

-   GLushort zoomedVals16[MAX_WIDTH];

-   GLuint zoomedVals32[MAX_WIDTH];

-   GLint x0, x1, y0, y1, y;

-   GLint i, zoomedWidth;

-

-   if (!compute_zoomed_bounds(ctx, imgX, imgY, spanX, spanY, width,

-                              &x0, &x1, &y0, &y1)) {

-      return;  /* totally clipped */

-   }

-

-   zoomedWidth = x1 - x0;

-   ASSERT(zoomedWidth > 0);

-   ASSERT(zoomedWidth <= MAX_WIDTH);

-

-   /* zoom the span horizontally */

-   if (rb->DataType == GL_UNSIGNED_SHORT) {

-      for (i = 0; i < zoomedWidth; i++) {

-         GLint j = unzoom_x(ctx->Pixel.ZoomX, imgX, x0 + i) - spanX;

-         ASSERT(j >= 0);

-         ASSERT(j < width);

-         zoomedVals16[i] = ((GLushort *) z)[j];

-      }

-      z = zoomedVals16;

-   }

-   else {

-      ASSERT(rb->DataType == GL_UNSIGNED_INT);

-      for (i = 0; i < zoomedWidth; i++) {

-         GLint j = unzoom_x(ctx->Pixel.ZoomX, imgX, x0 + i) - spanX;

-         ASSERT(j >= 0);

-         ASSERT(j < width);

-         zoomedVals32[i] = ((GLuint *) z)[j];

-      }

-      z = zoomedVals32;

-   }

-

-   /* write the zoomed spans */

-   for (y = y0; y < y1; y++) {

-      rb->PutRow(ctx, rb, zoomedWidth, x0, y, z, NULL);

-   }

-}

+/*
+ * Mesa 3-D graphics library
+ * Version:  7.1
+ *
+ * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include "main/glheader.h"
+#include "main/macros.h"
+#include "main/imports.h"
+#include "main/colormac.h"
+
+#include "s_context.h"
+#include "s_span.h"
+#include "s_stencil.h"
+#include "s_zoom.h"
+
+
+/**
+ * Compute the bounds of the region resulting from zooming a pixel span.
+ * The resulting region will be entirely inside the window/scissor bounds
+ * so no additional clipping is needed.
+ * \param imageX, imageY  position of the mage being drawn (gl WindowPos)
+ * \param spanX, spanY  position of span being drawing
+ * \param width  number of pixels in span
+ * \param x0, x1  returned X bounds of zoomed region [x0, x1)
+ * \param y0, y1  returned Y bounds of zoomed region [y0, y1)
+ * \return GL_TRUE if any zoomed pixels visible, GL_FALSE if totally clipped
+ */
+static GLboolean
+compute_zoomed_bounds(struct gl_context *ctx, GLint imageX, GLint imageY,
+                      GLint spanX, GLint spanY, GLint width,
+                      GLint *x0, GLint *x1, GLint *y0, GLint *y1)
+{
+   const struct gl_framebuffer *fb = ctx->DrawBuffer;
+   GLint c0, c1, r0, r1;
+
+   ASSERT(spanX >= imageX);
+   ASSERT(spanY >= imageY);
+
+   /*
+    * Compute destination columns: [c0, c1)
+    */
+   c0 = imageX + (GLint) ((spanX - imageX) * ctx->Pixel.ZoomX);
+   c1 = imageX + (GLint) ((spanX + width - imageX) * ctx->Pixel.ZoomX);
+   if (c1 < c0) {
+      /* swap */
+      GLint tmp = c1;
+      c1 = c0;
+      c0 = tmp;
+   }
+   c0 = CLAMP(c0, fb->_Xmin, fb->_Xmax);
+   c1 = CLAMP(c1, fb->_Xmin, fb->_Xmax);
+   if (c0 == c1) {
+      return GL_FALSE; /* no width */
+   }
+
+   /*
+    * Compute destination rows: [r0, r1)
+    */
+   r0 = imageY + (GLint) ((spanY - imageY) * ctx->Pixel.ZoomY);
+   r1 = imageY + (GLint) ((spanY + 1 - imageY) * ctx->Pixel.ZoomY);
+   if (r1 < r0) {
+      /* swap */
+      GLint tmp = r1;
+      r1 = r0;
+      r0 = tmp;
+   }
+   r0 = CLAMP(r0, fb->_Ymin, fb->_Ymax);
+   r1 = CLAMP(r1, fb->_Ymin, fb->_Ymax);
+   if (r0 == r1) {
+      return GL_FALSE; /* no height */
+   }
+
+   *x0 = c0;
+   *x1 = c1;
+   *y0 = r0;
+   *y1 = r1;
+
+   return GL_TRUE;
+}
+
+
+/**
+ * Convert a zoomed x image coordinate back to an unzoomed x coord.
+ * 'zx' is screen position of a pixel in the zoomed image, who's left edge
+ * is at 'imageX'.
+ * return corresponding x coord in the original, unzoomed image.
+ * This can use this for unzooming X or Y values.
+ */
+static inline GLint
+unzoom_x(GLfloat zoomX, GLint imageX, GLint zx)
+{
+   /*
+   zx = imageX + (x - imageX) * zoomX;
+   zx - imageX = (x - imageX) * zoomX;
+   (zx - imageX) / zoomX = x - imageX;
+   */
+   GLint x;
+   if (zoomX < 0.0)
+      zx++;
+   x = imageX + (GLint) ((zx - imageX) / zoomX);
+   return x;
+}
+
+
+
+/**
+ * Helper function called from _swrast_write_zoomed_rgba/rgb/
+ * index/depth_span().
+ */
+static void
+zoom_span( struct gl_context *ctx, GLint imgX, GLint imgY, const SWspan *span,
+           const GLvoid *src, GLenum format )
+{
+   SWcontext *swrast = SWRAST_CONTEXT(ctx);
+   SWspan zoomed;
+   GLint x0, x1, y0, y1;
+   GLint zoomedWidth;
+
+   if (!compute_zoomed_bounds(ctx, imgX, imgY, span->x, span->y, span->end,
+                              &x0, &x1, &y0, &y1)) {
+      return;  /* totally clipped */
+   }
+
+   if (!swrast->ZoomedArrays) {
+      /* allocate on demand */
+      swrast->ZoomedArrays = (SWspanarrays *) CALLOC(sizeof(SWspanarrays));
+      if (!swrast->ZoomedArrays)
+         return;
+   }
+
+   zoomedWidth = x1 - x0;
+   ASSERT(zoomedWidth > 0);
+   ASSERT(zoomedWidth <= MAX_WIDTH);
+
+   /* no pixel arrays! must be horizontal spans. */
+   ASSERT((span->arrayMask & SPAN_XY) == 0);
+   ASSERT(span->primitive == GL_BITMAP);
+
+   INIT_SPAN(zoomed, GL_BITMAP);
+   zoomed.x = x0;
+   zoomed.end = zoomedWidth;
+   zoomed.array = swrast->ZoomedArrays;
+   zoomed.array->ChanType = span->array->ChanType;
+   if (zoomed.array->ChanType == GL_UNSIGNED_BYTE)
+      zoomed.array->rgba = (GLchan (*)[4]) zoomed.array->rgba8;
+   else if (zoomed.array->ChanType == GL_UNSIGNED_SHORT)
+      zoomed.array->rgba = (GLchan (*)[4]) zoomed.array->rgba16;
+   else
+      zoomed.array->rgba = (GLchan (*)[4]) zoomed.array->attribs[FRAG_ATTRIB_COL0];
+
+   COPY_4V(zoomed.attrStart[FRAG_ATTRIB_WPOS], span->attrStart[FRAG_ATTRIB_WPOS]);
+   COPY_4V(zoomed.attrStepX[FRAG_ATTRIB_WPOS], span->attrStepX[FRAG_ATTRIB_WPOS]);
+   COPY_4V(zoomed.attrStepY[FRAG_ATTRIB_WPOS], span->attrStepY[FRAG_ATTRIB_WPOS]);
+
+   zoomed.attrStart[FRAG_ATTRIB_FOGC][0] = span->attrStart[FRAG_ATTRIB_FOGC][0];
+   zoomed.attrStepX[FRAG_ATTRIB_FOGC][0] = span->attrStepX[FRAG_ATTRIB_FOGC][0];
+   zoomed.attrStepY[FRAG_ATTRIB_FOGC][0] = span->attrStepY[FRAG_ATTRIB_FOGC][0];
+
+   if (format == GL_RGBA || format == GL_RGB) {
+      /* copy Z info */
+      zoomed.z = span->z;
+      zoomed.zStep = span->zStep;
+      /* we'll generate an array of colorss */
+      zoomed.interpMask = span->interpMask & ~SPAN_RGBA;
+      zoomed.arrayMask |= SPAN_RGBA;
+      zoomed.arrayAttribs |= FRAG_BIT_COL0;  /* we'll produce these values */
+      ASSERT(span->arrayMask & SPAN_RGBA);
+   }
+   else if (format == GL_DEPTH_COMPONENT) {
+      /* Copy color info */
+      zoomed.red = span->red;
+      zoomed.green = span->green;
+      zoomed.blue = span->blue;
+      zoomed.alpha = span->alpha;
+      zoomed.redStep = span->redStep;
+      zoomed.greenStep = span->greenStep;
+      zoomed.blueStep = span->blueStep;
+      zoomed.alphaStep = span->alphaStep;
+      /* we'll generate an array of depth values */
+      zoomed.interpMask = span->interpMask & ~SPAN_Z;
+      zoomed.arrayMask |= SPAN_Z;
+      ASSERT(span->arrayMask & SPAN_Z);
+   }
+   else {
+      _mesa_problem(ctx, "Bad format in zoom_span");
+      return;
+   }
+
+   /* zoom the span horizontally */
+   if (format == GL_RGBA) {
+      if (zoomed.array->ChanType == GL_UNSIGNED_BYTE) {
+         const GLubyte (*rgba)[4] = (const GLubyte (*)[4]) src;
+         GLint i;
+         for (i = 0; i < zoomedWidth; i++) {
+            GLint j = unzoom_x(ctx->Pixel.ZoomX, imgX, x0 + i) - span->x;
+            ASSERT(j >= 0);
+            ASSERT(j < (GLint) span->end);
+            COPY_4UBV(zoomed.array->rgba8[i], rgba[j]);
+         }
+      }
+      else if (zoomed.array->ChanType == GL_UNSIGNED_SHORT) {
+         const GLushort (*rgba)[4] = (const GLushort (*)[4]) src;
+         GLint i;
+         for (i = 0; i < zoomedWidth; i++) {
+            GLint j = unzoom_x(ctx->Pixel.ZoomX, imgX, x0 + i) - span->x;
+            ASSERT(j >= 0);
+            ASSERT(j < (GLint) span->end);
+            COPY_4V(zoomed.array->rgba16[i], rgba[j]);
+         }
+      }
+      else {
+         const GLfloat (*rgba)[4] = (const GLfloat (*)[4]) src;
+         GLint i;
+         for (i = 0; i < zoomedWidth; i++) {
+            GLint j = unzoom_x(ctx->Pixel.ZoomX, imgX, x0 + i) - span->x;
+            ASSERT(j >= 0);
+            ASSERT(j < span->end);
+            COPY_4V(zoomed.array->attribs[FRAG_ATTRIB_COL0][i], rgba[j]);
+         }
+      }
+   }
+   else if (format == GL_RGB) {
+      if (zoomed.array->ChanType == GL_UNSIGNED_BYTE) {
+         const GLubyte (*rgb)[3] = (const GLubyte (*)[3]) src;
+         GLint i;
+         for (i = 0; i < zoomedWidth; i++) {
+            GLint j = unzoom_x(ctx->Pixel.ZoomX, imgX, x0 + i) - span->x;
+            ASSERT(j >= 0);
+            ASSERT(j < (GLint) span->end);
+            zoomed.array->rgba8[i][0] = rgb[j][0];
+            zoomed.array->rgba8[i][1] = rgb[j][1];
+            zoomed.array->rgba8[i][2] = rgb[j][2];
+            zoomed.array->rgba8[i][3] = 0xff;
+         }
+      }
+      else if (zoomed.array->ChanType == GL_UNSIGNED_SHORT) {
+         const GLushort (*rgb)[3] = (const GLushort (*)[3]) src;
+         GLint i;
+         for (i = 0; i < zoomedWidth; i++) {
+            GLint j = unzoom_x(ctx->Pixel.ZoomX, imgX, x0 + i) - span->x;
+            ASSERT(j >= 0);
+            ASSERT(j < (GLint) span->end);
+            zoomed.array->rgba16[i][0] = rgb[j][0];
+            zoomed.array->rgba16[i][1] = rgb[j][1];
+            zoomed.array->rgba16[i][2] = rgb[j][2];
+            zoomed.array->rgba16[i][3] = 0xffff;
+         }
+      }
+      else {
+         const GLfloat (*rgb)[3] = (const GLfloat (*)[3]) src;
+         GLint i;
+         for (i = 0; i < zoomedWidth; i++) {
+            GLint j = unzoom_x(ctx->Pixel.ZoomX, imgX, x0 + i) - span->x;
+            ASSERT(j >= 0);
+            ASSERT(j < span->end);
+            zoomed.array->attribs[FRAG_ATTRIB_COL0][i][0] = rgb[j][0];
+            zoomed.array->attribs[FRAG_ATTRIB_COL0][i][1] = rgb[j][1];
+            zoomed.array->attribs[FRAG_ATTRIB_COL0][i][2] = rgb[j][2];
+            zoomed.array->attribs[FRAG_ATTRIB_COL0][i][3] = 1.0F;
+         }
+      }
+   }
+   else if (format == GL_DEPTH_COMPONENT) {
+      const GLuint *zValues = (const GLuint *) src;
+      GLint i;
+      for (i = 0; i < zoomedWidth; i++) {
+         GLint j = unzoom_x(ctx->Pixel.ZoomX, imgX, x0 + i) - span->x;
+         ASSERT(j >= 0);
+         ASSERT(j < (GLint) span->end);
+         zoomed.array->z[i] = zValues[j];
+      }
+      /* Now, fall into the RGB path below */
+      format = GL_RGBA;
+   }
+
+   /* write the span in rows [r0, r1) */
+   if (format == GL_RGBA || format == GL_RGB) {
+      /* Writing the span may modify the colors, so make a backup now if we're
+       * going to call _swrast_write_zoomed_span() more than once.
+       * Also, clipping may change the span end value, so store it as well.
+       */
+      const GLint end = zoomed.end; /* save */
+      GLuint rgbaSave[MAX_WIDTH][4];
+      const GLint pixelSize =
+         (zoomed.array->ChanType == GL_UNSIGNED_BYTE) ? 4 * sizeof(GLubyte) :
+         ((zoomed.array->ChanType == GL_UNSIGNED_SHORT) ? 4 * sizeof(GLushort)
+          : 4 * sizeof(GLfloat));
+      if (y1 - y0 > 1) {
+         memcpy(rgbaSave, zoomed.array->rgba, zoomed.end * pixelSize);
+      }
+      for (zoomed.y = y0; zoomed.y < y1; zoomed.y++) {
+         _swrast_write_rgba_span(ctx, &zoomed);
+         zoomed.end = end;  /* restore */
+         if (y1 - y0 > 1) {
+            /* restore the colors */
+            memcpy(zoomed.array->rgba, rgbaSave, zoomed.end * pixelSize);
+         }
+      }
+   }
+}
+
+
+void
+_swrast_write_zoomed_rgba_span(struct gl_context *ctx, GLint imgX, GLint imgY,
+                               const SWspan *span, const GLvoid *rgba)
+{
+   zoom_span(ctx, imgX, imgY, span, rgba, GL_RGBA);
+}
+
+
+void
+_swrast_write_zoomed_rgb_span(struct gl_context *ctx, GLint imgX, GLint imgY,
+                              const SWspan *span, const GLvoid *rgb)
+{
+   zoom_span(ctx, imgX, imgY, span, rgb, GL_RGB);
+}
+
+
+void
+_swrast_write_zoomed_depth_span(struct gl_context *ctx, GLint imgX, GLint imgY,
+                                const SWspan *span)
+{
+   zoom_span(ctx, imgX, imgY, span,
+             (const GLvoid *) span->array->z, GL_DEPTH_COMPONENT);
+}
+
+
+/**
+ * Zoom/write stencil values.
+ * No per-fragment operations are applied.
+ */
+void
+_swrast_write_zoomed_stencil_span(struct gl_context *ctx, GLint imgX, GLint imgY,
+                                  GLint width, GLint spanX, GLint spanY,
+                                  const GLstencil stencil[])
+{
+   GLstencil zoomedVals[MAX_WIDTH];
+   GLint x0, x1, y0, y1, y;
+   GLint i, zoomedWidth;
+
+   if (!compute_zoomed_bounds(ctx, imgX, imgY, spanX, spanY, width,
+                              &x0, &x1, &y0, &y1)) {
+      return;  /* totally clipped */
+   }
+
+   zoomedWidth = x1 - x0;
+   ASSERT(zoomedWidth > 0);
+   ASSERT(zoomedWidth <= MAX_WIDTH);
+
+   /* zoom the span horizontally */
+   for (i = 0; i < zoomedWidth; i++) {
+      GLint j = unzoom_x(ctx->Pixel.ZoomX, imgX, x0 + i) - spanX;
+      ASSERT(j >= 0);
+      ASSERT(j < width);
+      zoomedVals[i] = stencil[j];
+   }
+
+   /* write the zoomed spans */
+   for (y = y0; y < y1; y++) {
+      _swrast_write_stencil_span(ctx, zoomedWidth, x0, y, zoomedVals);
+   }
+}
+
+
+/**
+ * Zoom/write z values (16 or 32-bit).
+ * No per-fragment operations are applied.
+ */
+void
+_swrast_write_zoomed_z_span(struct gl_context *ctx, GLint imgX, GLint imgY,
+                            GLint width, GLint spanX, GLint spanY,
+                            const GLvoid *z)
+{
+   struct gl_renderbuffer *rb = ctx->DrawBuffer->_DepthBuffer;
+   GLushort zoomedVals16[MAX_WIDTH];
+   GLuint zoomedVals32[MAX_WIDTH];
+   GLint x0, x1, y0, y1, y;
+   GLint i, zoomedWidth;
+
+   if (!compute_zoomed_bounds(ctx, imgX, imgY, spanX, spanY, width,
+                              &x0, &x1, &y0, &y1)) {
+      return;  /* totally clipped */
+   }
+
+   zoomedWidth = x1 - x0;
+   ASSERT(zoomedWidth > 0);
+   ASSERT(zoomedWidth <= MAX_WIDTH);
+
+   /* zoom the span horizontally */
+   if (rb->DataType == GL_UNSIGNED_SHORT) {
+      for (i = 0; i < zoomedWidth; i++) {
+         GLint j = unzoom_x(ctx->Pixel.ZoomX, imgX, x0 + i) - spanX;
+         ASSERT(j >= 0);
+         ASSERT(j < width);
+         zoomedVals16[i] = ((GLushort *) z)[j];
+      }
+      z = zoomedVals16;
+   }
+   else {
+      ASSERT(rb->DataType == GL_UNSIGNED_INT);
+      for (i = 0; i < zoomedWidth; i++) {
+         GLint j = unzoom_x(ctx->Pixel.ZoomX, imgX, x0 + i) - spanX;
+         ASSERT(j >= 0);
+         ASSERT(j < width);
+         zoomedVals32[i] = ((GLuint *) z)[j];
+      }
+      z = zoomedVals32;
+   }
+
+   /* write the zoomed spans */
+   for (y = y0; y < y1; y++) {
+      rb->PutRow(ctx, rb, zoomedWidth, x0, y, z, NULL);
+   }
+}