From a62efdf82c20747feb11dfd7756f0579aa914b57 Mon Sep 17 00:00:00 2001
From: Eric Anholt <eric@anholt.net>
Date: Thu, 9 Sep 2010 19:37:15 -0700
Subject: mesa: Remove EXT_convolution.

More optional code.
---
 src/mesa/swrast/s_readpix.c | 59 ++-------------------------------------------
 1 file changed, 2 insertions(+), 57 deletions(-)

(limited to 'src/mesa/swrast/s_readpix.c')

diff --git a/src/mesa/swrast/s_readpix.c b/src/mesa/swrast/s_readpix.c
index 1de481248b..b0a3d36420 100644
--- a/src/mesa/swrast/s_readpix.c
+++ b/src/mesa/swrast/s_readpix.c
@@ -26,7 +26,6 @@
 #include "main/glheader.h"
 #include "main/bufferobj.h"
 #include "main/colormac.h"
-#include "main/convolve.h"
 #include "main/feedback.h"
 #include "main/formats.h"
 #include "main/image.h"
@@ -326,57 +325,7 @@ read_rgba_pixels( GLcontext *ctx,
    /* width should never be > MAX_WIDTH since we did clipping earlier */
    ASSERT(width <= MAX_WIDTH);
 
-   if (ctx->Pixel.Convolution2DEnabled || ctx->Pixel.Separable2DEnabled) {
-      GLfloat *dest, *src, *tmpImage, *convImage;
-      GLint row;
-
-      tmpImage = (GLfloat *) malloc(width * height * 4 * sizeof(GLfloat));
-      if (!tmpImage) {
-         _mesa_error(ctx, GL_OUT_OF_MEMORY, "glReadPixels");
-         return;
-      }
-      convImage = (GLfloat *) malloc(width * height * 4 * sizeof(GLfloat));
-      if (!convImage) {
-         free(tmpImage);
-         _mesa_error(ctx, GL_OUT_OF_MEMORY, "glReadPixels");
-         return;
-      }
-
-      /* read full RGBA, FLOAT image */
-      dest = tmpImage;
-      for (row = 0; row < height; row++, y++) {
-         _swrast_read_rgba_span(ctx, rb, width, x, y, GL_FLOAT, dest);
-         _mesa_apply_rgba_transfer_ops(ctx, 
-                                      transferOps & IMAGE_PRE_CONVOLUTION_BITS,
-                                      width, (GLfloat (*)[4]) dest);
-         dest += width * 4;
-      }
-
-      /* do convolution */
-      if (ctx->Pixel.Convolution2DEnabled) {
-         _mesa_convolve_2d_image(ctx, &width, &height, tmpImage, convImage);
-      }
-      else {
-         ASSERT(ctx->Pixel.Separable2DEnabled);
-         _mesa_convolve_sep_image(ctx, &width, &height, tmpImage, convImage);
-      }
-      free(tmpImage);
-
-      /* finish transfer ops and pack the resulting image */
-      src = convImage;
-      for (row = 0; row < height; row++) {
-         GLvoid *dest;
-         dest = _mesa_image_address2d(packing, pixels, width, height,
-                                      format, type, row, 0);
-         _mesa_pack_rgba_span_float(ctx, width, (GLfloat (*)[4]) src,
-                                    format, type, dest, packing,
-                                    transferOps & IMAGE_POST_CONVOLUTION_BITS);
-         src += width * 4;
-      }
-      free(convImage);
-   }
-   else {
-      /* no convolution */
+   do {
       const GLint dstStride
          = _mesa_image_row_stride(packing, width, format, type);
       GLfloat (*rgba)[4] = swrast->SpanArrays->attribs[FRAG_ATTRIB_COL0];
@@ -385,10 +334,6 @@ read_rgba_pixels( GLcontext *ctx,
          = (GLubyte *) _mesa_image_address2d(packing, pixels, width, height,
                                              format, type, 0, 0);
 
-      /* make sure we don't apply 1D convolution */
-      transferOps &= ~(IMAGE_CONVOLUTION_BIT |
-                       IMAGE_POST_CONVOLUTION_SCALE_BIAS);
-
       for (row = 0; row < height; row++, y++) {
 
          /* Get float rgba pixels */
@@ -407,7 +352,7 @@ read_rgba_pixels( GLcontext *ctx,
 
          dst += dstStride;
       }
-   }
+   } while (0);
 }
 
 
-- 
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