/*
* Mesa 3-D graphics library
- * Version: 6.5.2
+ * Version: 7.0.3
*
- * Copyright (C) 1999-2006 Brian Paul All Rights Reserved.
+ * 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"),
struct gl_renderbuffer *rb = ctx->ReadBuffer->_ColorReadBuffer;
GLint i;
- ASSERT(rb);
+ if (!rb)
+ return;
/* width should never be > MAX_WIDTH since we did clipping earlier */
ASSERT(width <= MAX_WIDTH);
const GLboolean biasOrScale
= ctx->Pixel.DepthScale != 1.0 || ctx->Pixel.DepthBias != 0.0;
+ if (!rb)
+ return;
+
/* clipping should have been done already */
ASSERT(x >= 0);
ASSERT(y >= 0);
/* width should never be > MAX_WIDTH since we did clipping earlier */
ASSERT(width <= MAX_WIDTH);
- ASSERT(rb);
-
if (type == GL_UNSIGNED_SHORT && fb->Visual.depthBits == 16
&& !biasOrScale && !packing->SwapBytes) {
/* Special case: directly read 16-bit unsigned depth values. */
&& !biasOrScale && !packing->SwapBytes) {
/* Special case: directly read 24-bit unsigned depth values. */
GLint j;
- ASSERT(rb->InternalFormat == GL_DEPTH_COMPONENT32);
+ ASSERT(rb->InternalFormat == GL_DEPTH_COMPONENT24);
ASSERT(rb->DataType == GL_UNSIGNED_INT);
for (j = 0; j < height; j++, y++) {
GLuint *dest = (GLuint *)
rb->GetRow(ctx, rb, width, x, y, dest);
/* convert range from 24-bit to 32-bit */
for (k = 0; k < width; k++) {
- dest[k] = (dest[k] << 8) | (dest[k] >> 24);
+ /* Note: put MSByte of 24-bit value into LSByte */
+ dest[k] = (dest[k] << 8) | ((dest[k] >> 16) & 0xff);
}
}
}
struct gl_renderbuffer *rb = fb->_StencilBuffer;
GLint j;
- ASSERT(rb);
+ if (!rb)
+ return;
/* width should never be > MAX_WIDTH since we did clipping earlier */
ASSERT(width <= MAX_WIDTH);
/**
* Optimized glReadPixels for particular pixel formats when pixel
* scaling, biasing, mapping, etc. are disabled.
+ * \return GL_TRUE if success, GL_FALSE if unable to do the readpixels
*/
static GLboolean
fast_read_rgba_pixels( GLcontext *ctx,
{
struct gl_renderbuffer *rb = ctx->ReadBuffer->_ColorReadBuffer;
+ if (!rb)
+ return GL_FALSE;
+
ASSERT(rb->_BaseFormat == GL_RGBA || rb->_BaseFormat == GL_RGB);
/* clipping should have already been done */
struct gl_framebuffer *fb = ctx->ReadBuffer;
struct gl_renderbuffer *rb = fb->_ColorReadBuffer;
- ASSERT(rb);
+ if (!rb)
+ return;
if (type == GL_FLOAT && ((ctx->Color.ClampReadColor == GL_TRUE) ||
(ctx->Color.ClampReadColor == GL_FIXED_ONLY_ARB &&
/* no convolution */
const GLint dstStride
= _mesa_image_row_stride(packing, width, format, type);
- GLfloat (*rgba)[4] = swrast->SpanArrays->color.sz4.rgba;
+ GLfloat (*rgba)[4] = swrast->SpanArrays->attribs[FRAG_ATTRIB_COL0];
GLint row;
GLubyte *dst
= (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 */
depthRb = ctx->ReadBuffer->_DepthBuffer;
stencilRb = ctx->ReadBuffer->_StencilBuffer;
- ASSERT(depthRb);
- ASSERT(stencilRb);
+ if (!depthRb || !stencilRb)
+ return;
depthRb = ctx->ReadBuffer->Attachment[BUFFER_DEPTH].Renderbuffer;
stencilRb = ctx->ReadBuffer->Attachment[BUFFER_STENCIL].Renderbuffer;
/* Do all needed clipping here, so that we can forget about it later */
if (!_mesa_clip_readpixels(ctx, &x, &y, &width, &height, &clippedPacking)) {
/* The ReadPixels region is totally outside the window bounds */
- goto end;
- }
-
- if (clippedPacking.BufferObj->Name) {
- /* pack into PBO */
- GLubyte *buf;
- if (!_mesa_validate_pbo_access(2, &clippedPacking, width, height, 1,
- format, type, pixels)) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glReadPixels(invalid PBO access)");
- goto end;
- }
- buf = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT,
- GL_WRITE_ONLY_ARB,
- clippedPacking.BufferObj);
- if (!buf) {
- /* buffer is already mapped - that's an error */
- _mesa_error(ctx, GL_INVALID_OPERATION, "glReadPixels(PBO is mapped)");
- goto end;
- }
- pixels = ADD_POINTERS(buf, pixels);
+ RENDER_FINISH(swrast, ctx);
+ return;
}
+ pixels = _mesa_map_readpix_pbo(ctx, &clippedPacking, pixels);
+ if (!pixels)
+ return;
+
switch (format) {
case GL_COLOR_INDEX:
read_index_pixels(ctx, x, y, width, height, type, pixels,
/* don't return yet, clean-up */
}
-
-end:
RENDER_FINISH(swrast, ctx);
- if (clippedPacking.BufferObj->Name) {
- /* done with PBO so unmap it now */
- ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT,
- clippedPacking.BufferObj);
- }
+ _mesa_unmap_readpix_pbo(ctx, &clippedPacking);
}