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-rw-r--r--mesalib/src/mesa/swrast/s_aaline.c984
-rw-r--r--mesalib/src/mesa/swrast/s_aatriangle.c624
-rw-r--r--mesalib/src/mesa/swrast/s_blit.c2
-rw-r--r--mesalib/src/mesa/swrast/s_context.c11
-rw-r--r--mesalib/src/mesa/swrast/s_context.h12
-rw-r--r--mesalib/src/mesa/swrast/s_fragprog.c2
-rw-r--r--mesalib/src/mesa/swrast/s_logic.c438
-rw-r--r--mesalib/src/mesa/swrast/s_points.c1144
-rw-r--r--mesalib/src/mesa/swrast/s_span.c22
-rw-r--r--mesalib/src/mesa/swrast/s_stencil.c2
-rw-r--r--mesalib/src/mesa/swrast/s_texcombine.c22
-rw-r--r--mesalib/src/mesa/swrast/s_texfetch.c2
-rw-r--r--mesalib/src/mesa/swrast/s_texfilter.c52
-rw-r--r--mesalib/src/mesa/swrast/s_texture.c7
-rw-r--r--mesalib/src/mesa/swrast/s_triangle.c8
-rw-r--r--mesalib/src/mesa/swrast/s_zoom.c866
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);
+ }
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-12 16:52:13 +0000