Imported nx-X11-3.1.0-1.tar.gznx-X11/3.1.0-1

Summary: Imported nx-X11-3.1.0-1.tar.gz
Keywords:

Imported nx-X11-3.1.0-1.tar.gz
into Git repository

1 files changed, 454 insertions, 0 deletions

diff --git a/nx-X11/extras/Mesa/src/mesa/swrast/s_linetemp.h b/nx-X11/extras/Mesa/src/mesa/swrast/s_linetemp.h
new file mode 100644
index 000000000..af7aeabf6
--- /dev/null
+++ b/nx-X11/extras/Mesa/src/mesa/swrast/s_linetemp.h
@@ -0,0 +1,454 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  6.3
+ *
+ * Copyright (C) 1999-2004  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.
+ */
+
+
+/*
+ * Line Rasterizer Template
+ *
+ * This file is #include'd to generate custom line rasterizers.
+ *
+ * The following macros may be defined to indicate what auxillary information
+ * must be interplated along the line:
+ *    INTERP_Z        - if defined, interpolate Z values
+ *    INTERP_FOG      - if defined, interpolate FOG values
+ *    INTERP_RGBA     - if defined, interpolate RGBA values
+ *    INTERP_SPEC     - if defined, interpolate specular RGB values
+ *    INTERP_INDEX    - if defined, interpolate color index values
+ *    INTERP_TEX      - if defined, interpolate unit 0 texcoords
+ *    INTERP_MULTITEX - if defined, interpolate multi-texcoords
+ *
+ * When one can directly address pixels in the color buffer the following
+ * macros can be defined and used to directly compute pixel addresses during
+ * rasterization (see pixelPtr):
+ *    PIXEL_TYPE          - the datatype of a pixel (GLubyte, GLushort, GLuint)
+ *    BYTES_PER_ROW       - number of bytes per row in the color buffer
+ *    PIXEL_ADDRESS(X,Y)  - returns the address of pixel at (X,Y) where
+ *                          Y==0 at bottom of screen and increases upward.
+ *
+ * Similarly, for direct depth buffer access, this type is used for depth
+ * buffer addressing:
+ *    DEPTH_TYPE          - either GLushort or GLuint
+ *
+ * Optionally, one may provide one-time setup code
+ *    SETUP_CODE    - code which is to be executed once per line
+ *
+ * To actually "plot" each pixel the PLOT macro must be defined...
+ *    PLOT(X,Y) - code to plot a pixel.  Example:
+ *                if (Z < *zPtr) {
+ *                   *zPtr = Z;
+ *                   color = pack_rgb( FixedToInt(r0), FixedToInt(g0),
+ *                                     FixedToInt(b0) );
+ *                   put_pixel( X, Y, color );
+ *                }
+ *
+ * This code was designed for the origin to be in the lower-left corner.
+ *
+ */
+
+
+static void
+NAME( GLcontext *ctx, const SWvertex *vert0, const SWvertex *vert1 )
+{
+   struct sw_span span;
+   GLuint interpFlags = 0;
+   GLint x0 = (GLint) vert0->win[0];
+   GLint x1 = (GLint) vert1->win[0];
+   GLint y0 = (GLint) vert0->win[1];
+   GLint y1 = (GLint) vert1->win[1];
+   GLint dx, dy;
+   GLint numPixels;
+   GLint xstep, ystep;
+#if defined(DEPTH_TYPE)
+   const GLint depthBits = ctx->Visual.depthBits;
+   const GLint fixedToDepthShift = depthBits <= 16 ? FIXED_SHIFT : 0;
+   struct gl_renderbuffer *zrb = ctx->DrawBuffer->Attachment[BUFFER_DEPTH].Renderbuffer;
+#define FixedToDepth(F)  ((F) >> fixedToDepthShift)
+   GLint zPtrXstep, zPtrYstep;
+   DEPTH_TYPE *zPtr;
+#elif defined(INTERP_Z)
+   const GLint depthBits = ctx->Visual.depthBits;
+#endif
+#ifdef PIXEL_ADDRESS
+   PIXEL_TYPE *pixelPtr;
+   GLint pixelXstep, pixelYstep;
+#endif
+
+#ifdef SETUP_CODE
+   SETUP_CODE
+#endif
+
+   /* Cull primitives with malformed coordinates.
+    */
+   {
+      GLfloat tmp = vert0->win[0] + vert0->win[1]
+                  + vert1->win[0] + vert1->win[1];
+      if (IS_INF_OR_NAN(tmp))
+	 return;
+   }
+
+   /*
+   printf("%s():\n", __FUNCTION__);
+   printf(" (%f, %f, %f) -> (%f, %f, %f)\n",
+          vert0->win[0], vert0->win[1], vert0->win[2],
+          vert1->win[0], vert1->win[1], vert1->win[2]);
+   printf(" (%d, %d, %d) -> (%d, %d, %d)\n",
+          vert0->color[0], vert0->color[1], vert0->color[2], 
+          vert1->color[0], vert1->color[1], vert1->color[2]);
+   printf(" (%d, %d, %d) -> (%d, %d, %d)\n",
+          vert0->specular[0], vert0->specular[1], vert0->specular[2], 
+          vert1->specular[0], vert1->specular[1], vert1->specular[2]);
+   */
+
+/*
+ * Despite being clipped to the view volume, the line's window coordinates
+ * may just lie outside the window bounds.  That is, if the legal window
+ * coordinates are [0,W-1][0,H-1], it's possible for x==W and/or y==H.
+ * This quick and dirty code nudges the endpoints inside the window if
+ * necessary.
+ */
+#ifdef CLIP_HACK
+   {
+      GLint w = ctx->DrawBuffer->Width;
+      GLint h = ctx->DrawBuffer->Height;
+      if ((x0==w) | (x1==w)) {
+         if ((x0==w) & (x1==w))
+           return;
+         x0 -= x0==w;
+         x1 -= x1==w;
+      }
+      if ((y0==h) | (y1==h)) {
+         if ((y0==h) & (y1==h))
+           return;
+         y0 -= y0==h;
+         y1 -= y1==h;
+      }
+   }
+#endif
+
+   dx = x1 - x0;
+   dy = y1 - y0;
+   if (dx == 0 && dy == 0)
+      return;
+
+#ifdef DEPTH_TYPE
+   zPtr = (DEPTH_TYPE *) zrb->GetPointer(ctx, zrb, x0, y0);
+#endif
+#ifdef PIXEL_ADDRESS
+   pixelPtr = (PIXEL_TYPE *) PIXEL_ADDRESS(x0,y0);
+#endif
+
+   if (dx<0) {
+      dx = -dx;   /* make positive */
+      xstep = -1;
+#ifdef DEPTH_TYPE
+      zPtrXstep = -((GLint)sizeof(DEPTH_TYPE));
+#endif
+#ifdef PIXEL_ADDRESS
+      pixelXstep = -((GLint)sizeof(PIXEL_TYPE));
+#endif
+   }
+   else {
+      xstep = 1;
+#ifdef DEPTH_TYPE
+      zPtrXstep = ((GLint)sizeof(DEPTH_TYPE));
+#endif
+#ifdef PIXEL_ADDRESS
+      pixelXstep = ((GLint)sizeof(PIXEL_TYPE));
+#endif
+   }
+
+   if (dy<0) {
+      dy = -dy;   /* make positive */
+      ystep = -1;
+#ifdef DEPTH_TYPE
+      zPtrYstep = -((GLint) (ctx->DrawBuffer->Width * sizeof(DEPTH_TYPE)));
+#endif
+#ifdef PIXEL_ADDRESS
+      pixelYstep = BYTES_PER_ROW;
+#endif
+   }
+   else {
+      ystep = 1;
+#ifdef DEPTH_TYPE
+      zPtrYstep = (GLint) (ctx->DrawBuffer->Width * sizeof(DEPTH_TYPE));
+#endif
+#ifdef PIXEL_ADDRESS
+      pixelYstep = -(BYTES_PER_ROW);
+#endif
+   }
+
+   ASSERT(dx >= 0);
+   ASSERT(dy >= 0);
+
+   numPixels = MAX2(dx, dy);
+
+   /*
+    * Span setup: compute start and step values for all interpolated values.
+    */
+#ifdef INTERP_RGBA
+   interpFlags |= SPAN_RGBA;
+   if (ctx->Light.ShadeModel == GL_SMOOTH) {
+      span.red   = ChanToFixed(vert0->color[0]);
+      span.green = ChanToFixed(vert0->color[1]);
+      span.blue  = ChanToFixed(vert0->color[2]);
+      span.alpha = ChanToFixed(vert0->color[3]);
+      span.redStep   = (ChanToFixed(vert1->color[0]) - span.red  ) / numPixels;
+      span.greenStep = (ChanToFixed(vert1->color[1]) - span.green) / numPixels;
+      span.blueStep  = (ChanToFixed(vert1->color[2]) - span.blue ) / numPixels;
+      span.alphaStep = (ChanToFixed(vert1->color[3]) - span.alpha) / numPixels;
+   }
+   else {
+      span.red   = ChanToFixed(vert1->color[0]);
+      span.green = ChanToFixed(vert1->color[1]);
+      span.blue  = ChanToFixed(vert1->color[2]);
+      span.alpha = ChanToFixed(vert1->color[3]);
+      span.redStep   = 0;
+      span.greenStep = 0;
+      span.blueStep  = 0;
+      span.alphaStep = 0;
+   }
+#endif
+#ifdef INTERP_SPEC
+   interpFlags |= SPAN_SPEC;
+   if (ctx->Light.ShadeModel == GL_SMOOTH) {
+      span.specRed       = ChanToFixed(vert0->specular[0]);
+      span.specGreen     = ChanToFixed(vert0->specular[1]);
+      span.specBlue      = ChanToFixed(vert0->specular[2]);
+      span.specRedStep   = (ChanToFixed(vert1->specular[0]) - span.specRed) / numPixels;
+      span.specGreenStep = (ChanToFixed(vert1->specular[1]) - span.specBlue) / numPixels;
+      span.specBlueStep  = (ChanToFixed(vert1->specular[2]) - span.specGreen) / numPixels;
+   }
+   else {
+      span.specRed       = ChanToFixed(vert1->specular[0]);
+      span.specGreen     = ChanToFixed(vert1->specular[1]);
+      span.specBlue      = ChanToFixed(vert1->specular[2]);
+      span.specRedStep   = 0;
+      span.specGreenStep = 0;
+      span.specBlueStep  = 0;
+   }
+#endif
+#ifdef INTERP_INDEX
+   interpFlags |= SPAN_INDEX;
+   if (ctx->Light.ShadeModel == GL_SMOOTH) {
+      span.index = FloatToFixed(vert0->index);
+      span.indexStep = FloatToFixed(vert1->index - vert0->index) / numPixels;
+   }
+   else {
+      span.index = FloatToFixed(vert1->index);
+      span.indexStep = 0;
+   }
+#endif
+#if defined(INTERP_Z) || defined(DEPTH_TYPE)
+   interpFlags |= SPAN_Z;
+   {
+      if (depthBits <= 16) {
+         span.z = FloatToFixed(vert0->win[2]) + FIXED_HALF;
+         span.zStep = FloatToFixed(vert1->win[2] - vert0->win[2]) / numPixels;
+      }
+      else {
+         /* don't use fixed point */
+         span.z = (GLint) vert0->win[2];
+         span.zStep = (GLint) ((vert1->win[2] - vert0->win[2]) / numPixels);
+      }
+   }
+#endif
+#ifdef INTERP_FOG
+   interpFlags |= SPAN_FOG;
+   span.fog = vert0->fog;
+   span.fogStep = (vert1->fog - vert0->fog) / numPixels;
+#endif
+#ifdef INTERP_TEX
+   interpFlags |= SPAN_TEXTURE;
+   {
+      const GLfloat invw0 = vert0->win[3];
+      const GLfloat invw1 = vert1->win[3];
+      const GLfloat invLen = 1.0F / numPixels;
+      GLfloat ds, dt, dr, dq;
+      span.tex[0][0] = invw0 * vert0->texcoord[0][0];
+      span.tex[0][1] = invw0 * vert0->texcoord[0][1];
+      span.tex[0][2] = invw0 * vert0->texcoord[0][2];
+      span.tex[0][3] = invw0 * vert0->texcoord[0][3];
+      ds = (invw1 * vert1->texcoord[0][0]) - span.tex[0][0];
+      dt = (invw1 * vert1->texcoord[0][1]) - span.tex[0][1];
+      dr = (invw1 * vert1->texcoord[0][2]) - span.tex[0][2];
+      dq = (invw1 * vert1->texcoord[0][3]) - span.tex[0][3];
+      span.texStepX[0][0] = ds * invLen;
+      span.texStepX[0][1] = dt * invLen;
+      span.texStepX[0][2] = dr * invLen;
+      span.texStepX[0][3] = dq * invLen;
+      span.texStepY[0][0] = 0.0F;
+      span.texStepY[0][1] = 0.0F;
+      span.texStepY[0][2] = 0.0F;
+      span.texStepY[0][3] = 0.0F;
+   }
+#endif
+#ifdef INTERP_MULTITEX
+   interpFlags |= SPAN_TEXTURE;
+   {
+      const GLfloat invLen = 1.0F / numPixels;
+      GLuint u;
+      for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
+         if (ctx->Texture.Unit[u]._ReallyEnabled) {
+            const GLfloat invw0 = vert0->win[3];
+            const GLfloat invw1 = vert1->win[3];
+            GLfloat ds, dt, dr, dq;
+            span.tex[u][0] = invw0 * vert0->texcoord[u][0];
+            span.tex[u][1] = invw0 * vert0->texcoord[u][1];
+            span.tex[u][2] = invw0 * vert0->texcoord[u][2];
+            span.tex[u][3] = invw0 * vert0->texcoord[u][3];
+            ds = (invw1 * vert1->texcoord[u][0]) - span.tex[u][0];
+            dt = (invw1 * vert1->texcoord[u][1]) - span.tex[u][1];
+            dr = (invw1 * vert1->texcoord[u][2]) - span.tex[u][2];
+            dq = (invw1 * vert1->texcoord[u][3]) - span.tex[u][3];
+            span.texStepX[u][0] = ds * invLen;
+            span.texStepX[u][1] = dt * invLen;
+            span.texStepX[u][2] = dr * invLen;
+            span.texStepX[u][3] = dq * invLen;
+            span.texStepY[u][0] = 0.0F;
+            span.texStepY[u][1] = 0.0F;
+            span.texStepY[u][2] = 0.0F;
+            span.texStepY[u][3] = 0.0F;
+	 }
+      }
+   }
+#endif
+
+   INIT_SPAN(span, GL_LINE, numPixels, interpFlags, SPAN_XY);
+
+   /* Need these for fragment prog texcoord interpolation */
+   span.w = 1.0F;
+   span.dwdx = 0.0F;
+   span.dwdy = 0.0F;
+
+   /*
+    * Draw
+    */
+
+   if (dx > dy) {
+      /*** X-major line ***/
+      GLint i;
+      GLint errorInc = dy+dy;
+      GLint error = errorInc-dx;
+      GLint errorDec = error-dx;
+
+      for (i = 0; i < dx; i++) {
+#ifdef DEPTH_TYPE
+         GLdepth Z = FixedToDepth(span.z);
+#endif
+#ifdef PLOT
+         PLOT( x0, y0 );
+#else
+         span.array->x[i] = x0;
+         span.array->y[i] = y0;
+#endif
+         x0 += xstep;
+#ifdef DEPTH_TYPE
+         zPtr = (DEPTH_TYPE *) ((GLubyte*) zPtr + zPtrXstep);
+         span.z += span.zStep;
+#endif
+#ifdef PIXEL_ADDRESS
+         pixelPtr = (PIXEL_TYPE*) ((GLubyte*) pixelPtr + pixelXstep);
+#endif
+         if (error<0) {
+            error += errorInc;
+         }
+         else {
+            error += errorDec;
+            y0 += ystep;
+#ifdef DEPTH_TYPE
+            zPtr = (DEPTH_TYPE *) ((GLubyte*) zPtr + zPtrYstep);
+#endif
+#ifdef PIXEL_ADDRESS
+            pixelPtr = (PIXEL_TYPE*) ((GLubyte*) pixelPtr + pixelYstep);
+#endif
+         }
+      }
+   }
+   else {
+      /*** Y-major line ***/
+      GLint i;
+      GLint errorInc = dx+dx;
+      GLint error = errorInc-dy;
+      GLint errorDec = error-dy;
+
+      for (i=0;i<dy;i++) {
+#ifdef DEPTH_TYPE
+         GLdepth Z = FixedToDepth(span.z);
+#endif
+#ifdef PLOT
+         PLOT( x0, y0 );
+#else
+         span.array->x[i] = x0;
+         span.array->y[i] = y0;
+#endif
+         y0 += ystep;
+#ifdef DEPTH_TYPE
+         zPtr = (DEPTH_TYPE *) ((GLubyte*) zPtr + zPtrYstep);
+         span.z += span.zStep;
+#endif
+#ifdef PIXEL_ADDRESS
+         pixelPtr = (PIXEL_TYPE*) ((GLubyte*) pixelPtr + pixelYstep);
+#endif
+         if (error<0) {
+            error += errorInc;
+         }
+         else {
+            error += errorDec;
+            x0 += xstep;
+#ifdef DEPTH_TYPE
+            zPtr = (DEPTH_TYPE *) ((GLubyte*) zPtr + zPtrXstep);
+#endif
+#ifdef PIXEL_ADDRESS
+            pixelPtr = (PIXEL_TYPE*) ((GLubyte*) pixelPtr + pixelXstep);
+#endif
+         }
+      }
+   }
+
+#ifdef RENDER_SPAN
+   RENDER_SPAN( span );
+#endif
+
+   (void)span;
+
+}
+
+
+#undef NAME
+#undef INTERP_Z
+#undef INTERP_FOG
+#undef INTERP_RGBA
+#undef INTERP_SPEC
+#undef INTERP_TEX
+#undef INTERP_MULTITEX
+#undef INTERP_INDEX
+#undef PIXEL_ADDRESS
+#undef PIXEL_TYPE
+#undef DEPTH_TYPE
+#undef BYTES_PER_ROW
+#undef SETUP_CODE
+#undef PLOT
+#undef CLIP_HACK
+#undef FixedToDepth
+#undef RENDER_SPAN