mesa: remove _swrast_ReadPixels()

We use the code in main/readpix.c now.

Acked-by: Eric Anholt <[email protected]>

3 files changed, 1 insertions, 531 deletions

diff --git a/src/mesa/swrast/s_depth.c b/src/mesa/swrast/s_depth.c
index 6ffa0a31052..8d3ad105bce 100644
--- a/src/mesa/swrast/s_depth.c
+++ b/src/mesa/swrast/s_depth.c
@@ -1248,8 +1248,7 @@ _swrast_depth_bounds_test( struct gl_context *ctx, SWspan *span )
  * Read a span of depth values from the given depth renderbuffer, returning
  * the values as GLfloats.
  * This function does clipping to prevent reading outside the depth buffer's
- * bounds.  Though the clipping is redundant when we're called from
- * _swrast_ReadPixels.
+ * bounds.
  */
 void
 _swrast_read_depth_span_float( struct gl_context *ctx, struct gl_renderbuffer *rb,
diff --git a/src/mesa/swrast/s_readpix.c b/src/mesa/swrast/s_readpix.c
deleted file mode 100644
index 3a31a0d0528..00000000000
--- a/src/mesa/swrast/s_readpix.c
+++ /dev/null
@@ -1,522 +0,0 @@
-/*
- * Mesa 3-D graphics library
- * Version:  7.0.3
- *
- * 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/colormac.h"
-#include "main/feedback.h"
-#include "main/formats.h"
-#include "main/format_unpack.h"
-#include "main/image.h"
-#include "main/imports.h"
-#include "main/macros.h"
-#include "main/pack.h"
-#include "main/pbo.h"
-#include "main/state.h"
-
-#include "s_context.h"
-#include "s_depth.h"
-#include "s_span.h"
-#include "s_stencil.h"
-
-/**
- * Tries to implement glReadPixels() of GL_DEPTH_COMPONENT using memcpy of the
- * mapping.
- */
-static GLboolean
-fast_read_depth_pixels( struct gl_context *ctx,
-			GLint x, GLint y,
-			GLsizei width, GLsizei height,
-			GLenum type, GLvoid *pixels,
-			const struct gl_pixelstore_attrib *packing )
-{
-   struct gl_framebuffer *fb = ctx->ReadBuffer;
-   struct gl_renderbuffer *rb = fb->Attachment[BUFFER_DEPTH].Renderbuffer;
-   GLubyte *map, *dst;
-   int stride, dstStride, j;
-
-   if (ctx->Pixel.DepthScale != 1.0 || ctx->Pixel.DepthBias != 0.0)
-      return GL_FALSE;
-
-   if (packing->SwapBytes)
-      return GL_FALSE;
-
-   if (_mesa_get_format_datatype(rb->Format) != GL_UNSIGNED_INT)
-      return GL_FALSE;
-
-   if (!((type == GL_UNSIGNED_SHORT && rb->Format == MESA_FORMAT_Z16) ||
-	 type == GL_UNSIGNED_INT))
-      return GL_FALSE;
-
-   ctx->Driver.MapRenderbuffer(ctx, rb, x, y, width, height, GL_MAP_READ_BIT,
-			       &map, &stride);
-
-   dstStride = _mesa_image_row_stride(packing, width, GL_DEPTH_COMPONENT, type);
-   dst = (GLubyte *) _mesa_image_address2d(packing, pixels, width, height,
-					   GL_DEPTH_COMPONENT, type, 0, 0);
-
-   for (j = 0; j < height; j++) {
-      if (type == GL_UNSIGNED_INT) {
-	 _mesa_unpack_uint_z_row(rb->Format, width, map, (GLuint *)dst);
-      } else {
-	 ASSERT(type == GL_UNSIGNED_SHORT && rb->Format == MESA_FORMAT_Z16);
-	 memcpy(dst, map, width * 2);
-      }
-
-      map += stride;
-      dst += dstStride;
-   }
-   ctx->Driver.UnmapRenderbuffer(ctx, rb);
-
-   return GL_TRUE;
-}
-
-/**
- * Read pixels for format=GL_DEPTH_COMPONENT.
- */
-static void
-read_depth_pixels( struct gl_context *ctx,
-                   GLint x, GLint y,
-                   GLsizei width, GLsizei height,
-                   GLenum type, GLvoid *pixels,
-                   const struct gl_pixelstore_attrib *packing )
-{
-   struct gl_framebuffer *fb = ctx->ReadBuffer;
-   struct gl_renderbuffer *rb = fb->Attachment[BUFFER_DEPTH].Renderbuffer;
-   GLint j;
-   GLubyte *dst, *map;
-   int dstStride, stride;
-
-   if (!rb)
-      return;
-
-   /* clipping should have been done already */
-   ASSERT(x >= 0);
-   ASSERT(y >= 0);
-   ASSERT(x + width <= (GLint) rb->Width);
-   ASSERT(y + height <= (GLint) rb->Height);
-   /* width should never be > MAX_WIDTH since we did clipping earlier */
-   ASSERT(width <= MAX_WIDTH);
-
-   if (fast_read_depth_pixels(ctx, x, y, width, height, type, pixels, packing))
-      return;
-
-   dstStride = _mesa_image_row_stride(packing, width, GL_DEPTH_COMPONENT, type);
-   dst = (GLubyte *) _mesa_image_address2d(packing, pixels, width, height,
-					   GL_DEPTH_COMPONENT, type, 0, 0);
-
-   ctx->Driver.MapRenderbuffer(ctx, rb, x, y, width, height, GL_MAP_READ_BIT,
-			       &map, &stride);
-
-   /* General case (slower) */
-   for (j = 0; j < height; j++, y++) {
-      GLfloat depthValues[MAX_WIDTH];
-      _mesa_unpack_float_z_row(rb->Format, width, map, depthValues);
-      _mesa_pack_depth_span(ctx, width, dst, type, depthValues, packing);
-
-      dst += dstStride;
-      map += stride;
-   }
-
-   ctx->Driver.UnmapRenderbuffer(ctx, rb);
-}
-
-
-/**
- * Read pixels for format=GL_STENCIL_INDEX.
- */
-static void
-read_stencil_pixels( struct gl_context *ctx,
-                     GLint x, GLint y,
-                     GLsizei width, GLsizei height,
-                     GLenum type, GLvoid *pixels,
-                     const struct gl_pixelstore_attrib *packing )
-{
-   struct gl_framebuffer *fb = ctx->ReadBuffer;
-   struct gl_renderbuffer *rb = fb->Attachment[BUFFER_STENCIL].Renderbuffer;
-   GLint j;
-   GLubyte *map;
-   GLint stride;
-
-   if (!rb)
-      return;
-
-   /* width should never be > MAX_WIDTH since we did clipping earlier */
-   ASSERT(width <= MAX_WIDTH);
-
-   ctx->Driver.MapRenderbuffer(ctx, rb, x, y, width, height, GL_MAP_READ_BIT,
-			       &map, &stride);
-
-   /* process image row by row */
-   for (j = 0; j < height; j++) {
-      GLvoid *dest;
-      GLubyte stencil[MAX_WIDTH];
-
-      _mesa_unpack_ubyte_stencil_row(rb->Format, width, map, stencil);
-      dest = _mesa_image_address2d(packing, pixels, width, height,
-                                   GL_STENCIL_INDEX, type, j, 0);
-
-      _mesa_pack_stencil_span(ctx, width, type, dest, stencil, packing);
-
-      map += stride;
-   }
-
-   ctx->Driver.UnmapRenderbuffer(ctx, rb);
-}
-
-static GLboolean
-fast_read_rgba_pixels_memcpy( struct gl_context *ctx,
-			      GLint x, GLint y,
-			      GLsizei width, GLsizei height,
-			      GLenum format, GLenum type,
-			      GLvoid *pixels,
-			      const struct gl_pixelstore_attrib *packing,
-			      GLbitfield transferOps )
-{
-   struct gl_renderbuffer *rb = ctx->ReadBuffer->_ColorReadBuffer;
-   GLubyte *dst, *map;
-   int dstStride, stride, j, texelBytes;
-
-   if (!_mesa_format_matches_format_and_type(rb->Format, format, type))
-      return GL_FALSE;
-
-   /* check for things we can't handle here */
-   if (packing->SwapBytes ||
-       packing->LsbFirst) {
-      return GL_FALSE;
-   }
-
-   dstStride = _mesa_image_row_stride(packing, width, format, type);
-   dst = (GLubyte *) _mesa_image_address2d(packing, pixels, width, height,
-					   format, type, 0, 0);
-
-   ctx->Driver.MapRenderbuffer(ctx, rb, x, y, width, height, GL_MAP_READ_BIT,
-			       &map, &stride);
-
-   texelBytes = _mesa_get_format_bytes(rb->Format);
-   for (j = 0; j < height; j++) {
-      memcpy(dst, map, width * texelBytes);
-      dst += dstStride;
-      map += stride;
-   }
-
-   ctx->Driver.UnmapRenderbuffer(ctx, rb);
-
-   return GL_TRUE;
-}
-
-static GLboolean
-slow_read_rgba_pixels( struct gl_context *ctx,
-		       GLint x, GLint y,
-		       GLsizei width, GLsizei height,
-		       GLenum format, GLenum type,
-		       GLvoid *pixels,
-		       const struct gl_pixelstore_attrib *packing,
-		       GLbitfield transferOps )
-{
-   struct gl_renderbuffer *rb = ctx->ReadBuffer->_ColorReadBuffer;
-   const gl_format rbFormat = _mesa_get_srgb_format_linear(rb->Format);
-   union {
-      float f[MAX_WIDTH][4];
-      unsigned int i[MAX_WIDTH][4];
-   } rgba;
-   GLubyte *dst, *map;
-   int dstStride, stride, j;
-
-   dstStride = _mesa_image_row_stride(packing, width, format, type);
-   dst = (GLubyte *) _mesa_image_address2d(packing, pixels, width, height,
-					   format, type, 0, 0);
-
-   ctx->Driver.MapRenderbuffer(ctx, rb, x, y, width, height, GL_MAP_READ_BIT,
-			       &map, &stride);
-
-   for (j = 0; j < height; j++) {
-      if (_mesa_is_integer_format(format)) {
-	 _mesa_unpack_int_rgba_row(rbFormat, width, map, rgba.i);
-	 _mesa_pack_rgba_span_int(ctx, width, rgba.i, format, type, dst);
-      } else {
-	 _mesa_unpack_rgba_row(rbFormat, width, map, rgba.f);
-	 _mesa_pack_rgba_span_float(ctx, width, rgba.f, format, type, dst,
-				    packing, transferOps);
-      }
-      dst += dstStride;
-      map += stride;
-   }
-
-   ctx->Driver.UnmapRenderbuffer(ctx, rb);
-
-   return GL_TRUE;
-}
-
-/*
- * Read R, G, B, A, RGB, L, or LA pixels.
- */
-static void
-read_rgba_pixels( struct gl_context *ctx,
-                  GLint x, GLint y,
-                  GLsizei width, GLsizei height,
-                  GLenum format, GLenum type, GLvoid *pixels,
-                  const struct gl_pixelstore_attrib *packing )
-{
-   GLbitfield transferOps = ctx->_ImageTransferState;
-   struct gl_framebuffer *fb = ctx->ReadBuffer;
-   struct gl_renderbuffer *rb = fb->_ColorReadBuffer;
-
-   if (!rb)
-      return;
-
-   if ((ctx->Color._ClampReadColor == GL_TRUE || type != GL_FLOAT) &&
-       !_mesa_is_integer_format(format)) {
-      transferOps |= IMAGE_CLAMP_BIT;
-   }
-
-   if (!transferOps) {
-      /* Try the optimized paths first. */
-      if (fast_read_rgba_pixels_memcpy(ctx, x, y, width, height,
-				       format, type, pixels, packing,
-				       transferOps)) {
-	 return;
-      }
-   }
-
-   slow_read_rgba_pixels(ctx, x, y, width, height,
-			 format, type, pixels, packing, transferOps);
-}
-
-/**
- * For a packed depth/stencil buffer being read as depth/stencil, just memcpy the
- * data (possibly swapping 8/24 vs 24/8 as we go).
- */
-static GLboolean
-fast_read_depth_stencil_pixels(struct gl_context *ctx,
-			       GLint x, GLint y,
-			       GLsizei width, GLsizei height,
-			       GLubyte *dst, int dstStride)
-{
-   struct gl_framebuffer *fb = ctx->ReadBuffer;
-   struct gl_renderbuffer *rb = fb->Attachment[BUFFER_DEPTH].Renderbuffer;
-   struct gl_renderbuffer *stencilRb = fb->Attachment[BUFFER_STENCIL].Renderbuffer;
-   GLubyte *map;
-   int stride, i;
-
-   if (rb != stencilRb)
-      return GL_FALSE;
-
-   if (rb->Format != MESA_FORMAT_Z24_S8 &&
-       rb->Format != MESA_FORMAT_S8_Z24)
-      return GL_FALSE;
-
-   ctx->Driver.MapRenderbuffer(ctx, rb, x, y, width, height, GL_MAP_READ_BIT,
-			       &map, &stride);
-
-   for (i = 0; i < height; i++) {
-      _mesa_unpack_uint_24_8_depth_stencil_row(rb->Format, width,
-					       map, (GLuint *)dst);
-      map += stride;
-      dst += dstStride;
-   }
-
-   ctx->Driver.UnmapRenderbuffer(ctx, rb);
-
-   return GL_TRUE;
-}
-
-
-/**
- * For non-float-depth and stencil buffers being read as 24/8 depth/stencil,
- * copy the integer data directly instead of converting depth to float and
- * re-packing.
- */
-static GLboolean
-fast_read_depth_stencil_pixels_separate(struct gl_context *ctx,
-					GLint x, GLint y,
-					GLsizei width, GLsizei height,
-					uint32_t *dst, int dstStride)
-{
-   struct gl_framebuffer *fb = ctx->ReadBuffer;
-   struct gl_renderbuffer *depthRb = fb->Attachment[BUFFER_DEPTH].Renderbuffer;
-   struct gl_renderbuffer *stencilRb = fb->Attachment[BUFFER_STENCIL].Renderbuffer;
-   GLubyte *depthMap, *stencilMap;
-   int depthStride, stencilStride, i, j;
-
-   if (_mesa_get_format_datatype(depthRb->Format) != GL_UNSIGNED_INT)
-      return GL_FALSE;
-
-   ctx->Driver.MapRenderbuffer(ctx, depthRb, x, y, width, height,
-			       GL_MAP_READ_BIT, &depthMap, &depthStride);
-   ctx->Driver.MapRenderbuffer(ctx, stencilRb, x, y, width, height,
-			       GL_MAP_READ_BIT, &stencilMap, &stencilStride);
-
-   for (j = 0; j < height; j++) {
-      GLubyte stencilVals[MAX_WIDTH];
-
-      _mesa_unpack_uint_z_row(depthRb->Format, width, depthMap, dst);
-      _mesa_unpack_ubyte_stencil_row(stencilRb->Format, width,
-				     stencilMap, stencilVals);
-
-      for (i = 0; i < width; i++) {
-	 dst[i] = (dst[i] & 0xffffff00) | stencilVals[i];
-      }
-
-      depthMap += depthStride;
-      stencilMap += stencilStride;
-      dst += dstStride / 4;
-   }
-
-   ctx->Driver.UnmapRenderbuffer(ctx, depthRb);
-   ctx->Driver.UnmapRenderbuffer(ctx, stencilRb);
-
-   return GL_TRUE;
-}
-
-static void
-slow_read_depth_stencil_pixels_separate(struct gl_context *ctx,
-					GLint x, GLint y,
-					GLsizei width, GLsizei height,
-					GLenum type,
-					const struct gl_pixelstore_attrib *packing,
-					GLubyte *dst, int dstStride)
-{
-   struct gl_framebuffer *fb = ctx->ReadBuffer;
-   struct gl_renderbuffer *depthRb = fb->Attachment[BUFFER_DEPTH].Renderbuffer;
-   struct gl_renderbuffer *stencilRb = fb->Attachment[BUFFER_STENCIL].Renderbuffer;
-   GLubyte *depthMap, *stencilMap;
-   int depthStride, stencilStride, j;
-
-   ctx->Driver.MapRenderbuffer(ctx, depthRb, x, y, width, height,
-			       GL_MAP_READ_BIT, &depthMap, &depthStride);
-   ctx->Driver.MapRenderbuffer(ctx, stencilRb, x, y, width, height,
-			       GL_MAP_READ_BIT, &stencilMap, &stencilStride);
-
-   for (j = 0; j < height; j++) {
-      GLubyte stencilVals[MAX_WIDTH];
-      GLfloat depthVals[MAX_WIDTH];
-
-      _mesa_unpack_float_z_row(depthRb->Format, width, depthMap, depthVals);
-      _mesa_unpack_ubyte_stencil_row(stencilRb->Format, width,
-				     stencilMap, stencilVals);
-
-      _mesa_pack_depth_stencil_span(ctx, width, type, (GLuint *)dst,
-				    depthVals, stencilVals, packing);
-
-      depthMap += depthStride;
-      stencilMap += stencilStride;
-      dst += dstStride;
-   }
-
-   ctx->Driver.UnmapRenderbuffer(ctx, depthRb);
-   ctx->Driver.UnmapRenderbuffer(ctx, stencilRb);
-}
-
-
-/**
- * Read combined depth/stencil values.
- * We'll have already done error checking to be sure the expected
- * depth and stencil buffers really exist.
- */
-static void
-read_depth_stencil_pixels(struct gl_context *ctx,
-                          GLint x, GLint y,
-                          GLsizei width, GLsizei height,
-                          GLenum type, GLvoid *pixels,
-                          const struct gl_pixelstore_attrib *packing )
-{
-   const GLboolean scaleOrBias
-      = ctx->Pixel.DepthScale != 1.0 || ctx->Pixel.DepthBias != 0.0;
-   const GLboolean stencilTransfer = ctx->Pixel.IndexShift
-      || ctx->Pixel.IndexOffset || ctx->Pixel.MapStencilFlag;
-   GLubyte *dst;
-   int dstStride;
-
-   dst = (GLubyte *) _mesa_image_address2d(packing, pixels,
-					   width, height,
-					   GL_DEPTH_STENCIL_EXT,
-					   type, 0, 0);
-   dstStride = _mesa_image_row_stride(packing, width,
-				      GL_DEPTH_STENCIL_EXT, type);
-
-   /* Fast 24/8 reads. */
-   if (type == GL_UNSIGNED_INT_24_8 &&
-       !scaleOrBias && !stencilTransfer && !packing->SwapBytes) {
-      if (fast_read_depth_stencil_pixels(ctx, x, y, width, height,
-					 dst, dstStride))
-	 return;
-
-      if (fast_read_depth_stencil_pixels_separate(ctx, x, y, width, height,
-						  (uint32_t *)dst, dstStride))
-	 return;
-   }
-
-   slow_read_depth_stencil_pixels_separate(ctx, x, y, width, height,
-					   type, packing,
-					   dst, dstStride);
-}
-
-
-
-/**
- * Software fallback routine for ctx->Driver.ReadPixels().
- * By time we get here, all error checking will have been done.
- */
-void
-_swrast_ReadPixels( struct gl_context *ctx,
-		    GLint x, GLint y, GLsizei width, GLsizei height,
-		    GLenum format, GLenum type,
-		    const struct gl_pixelstore_attrib *packing,
-		    GLvoid *pixels )
-{
-   struct gl_pixelstore_attrib clippedPacking = *packing;
-
-   if (ctx->NewState)
-      _mesa_update_state(ctx);
-
-   /* Do all needed clipping here, so that we can forget about it later */
-   if (_mesa_clip_readpixels(ctx, &x, &y, &width, &height, &clippedPacking)) {
-
-      pixels = _mesa_map_pbo_dest(ctx, &clippedPacking, pixels);
-
-      if (pixels) {
-         switch (format) {
-         case GL_STENCIL_INDEX:
-            read_stencil_pixels(ctx, x, y, width, height, type, pixels,
-                                &clippedPacking);
-            break;
-         case GL_DEPTH_COMPONENT:
-            read_depth_pixels(ctx, x, y, width, height, type, pixels,
-                              &clippedPacking);
-            break;
-         case GL_DEPTH_STENCIL_EXT:
-            read_depth_stencil_pixels(ctx, x, y, width, height, type, pixels,
-                                      &clippedPacking);
-            break;
-         default:
-            /* all other formats should be color formats */
-            read_rgba_pixels(ctx, x, y, width, height, format, type, pixels,
-                             &clippedPacking);
-         }
-
-         _mesa_unmap_pbo_dest(ctx, &clippedPacking);
-      }
-   }
-}
diff --git a/src/mesa/swrast/swrast.h b/src/mesa/swrast/swrast.h
index 08d565ba03f..17b66c66429 100644
--- a/src/mesa/swrast/swrast.h
+++ b/src/mesa/swrast/swrast.h
@@ -119,13 +119,6 @@ _swrast_DrawPixels( struct gl_context *ctx,
 		    const GLvoid *pixels );
 
 extern void
-_swrast_ReadPixels( struct gl_context *ctx,
-		    GLint x, GLint y, GLsizei width, GLsizei height,
-		    GLenum format, GLenum type,
-		    const struct gl_pixelstore_attrib *unpack,
-		    GLvoid *pixels );
-
-extern void
 _swrast_BlitFramebuffer(struct gl_context *ctx,
                         GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,
                         GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1,