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i915: Bug #14313: Fix accelerated (PBO) ReadPixels. 

Refactoring of mine in 02d5ba8491 broke it
by failing to understand that the masking was about sign extension.
This commit is contained in:
Eric Anholt 2008-06-18 13:50:13 -07:00
parent 3e8aadee8b
commit cf29ab3ba0
1 changed files with 1 additions and 4 deletions
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5
src/mesa/drivers/dri/intel/intel_blit.c
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@ -326,9 +326,6 @@ intelEmitCopyBlit(struct intel_context *intel,
return;
}
dst_pitch &= 0xffff;
src_pitch &= 0xffff;
/* Initial y values don't seem to work with negative pitches. If
* we adjust the offsets manually (below), it seems to work fine.
*
@ -359,7 +356,7 @@ intelEmitCopyBlit(struct intel_context *intel,
BEGIN_BATCH(8, NO_LOOP_CLIPRECTS);
OUT_BATCH(CMD);
OUT_BATCH(BR13 | dst_pitch);
OUT_BATCH(BR13 | ((uint16_t)dst_pitch));
OUT_BATCH((0 << 16) | dst_x);
OUT_BATCH((h << 16) | dst_x2);
OUT_RELOC(dst_buffer, DRM_BO_FLAG_MEM_TT | DRM_BO_FLAG_WRITE,