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authorBrian Paul <brianp@vmware.com>2010-12-03 15:26:19 -0700
committerBrian Paul <brianp@vmware.com>2010-12-03 15:26:31 -0700
commit40ee69b4f33288604f8d90a1d11a63dfde082952 (patch)
treef32a6c0c2bef606f4c77ac9c327aeecb3c494719 /src/mesa/swrast/s_readpix.c
parent5fc2548faea31acdd08bbb0f016ea41c6f01cf41 (diff)
swrast: restructure some glReadPixels() code
Diffstat (limited to 'src/mesa/swrast/s_readpix.c')
-rw-r--r--src/mesa/swrast/s_readpix.c53
1 files changed, 25 insertions, 28 deletions
diff --git a/src/mesa/swrast/s_readpix.c b/src/mesa/swrast/s_readpix.c
index 91796788c1..9fe0752a37 100644
--- a/src/mesa/swrast/s_readpix.c
+++ b/src/mesa/swrast/s_readpix.c
@@ -476,36 +476,33 @@ _swrast_ReadPixels( struct gl_context *ctx,
_swrast_validate_derived( ctx );
/* 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 */
- swrast_render_finish(ctx);
- return;
- }
-
- pixels = _mesa_map_pbo_dest(ctx, &clippedPacking, pixels);
- if (!pixels)
- return;
-
- switch (format) {
- case GL_STENCIL_INDEX:
- read_stencil_pixels(ctx, x, y, width, height, type, pixels,
+ 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);
- 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);
+ }
}
swrast_render_finish(ctx);
-
- _mesa_unmap_pbo_dest(ctx, &clippedPacking);
}