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llvmpipe: Fix depth mask computation.

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Fixes depth test for 24bit depth formats.
This commit is contained in:
José Fonseca
2009-09-09 21:17:20 +01:00
parent cdbbcdf3bd
commit abc160b664
1 changed files with 5 additions and 4 deletions
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src/gallium/drivers/llvmpipe/lp_bld_depth.c
+5 -4
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@@ -179,12 +179,13 @@ lp_build_depth_test(LLVMBuilderRef builder,
padding_right = 0;
for(chan = 0; chan < z_swizzle; ++chan)
padding_right += format_desc->channel[chan].size;
padding_left = format_desc->block.bits - format_desc->channel[z_swizzle].size;
padding_left = format_desc->block.bits -
(padding_right + format_desc->channel[z_swizzle].size);
if(padding_left || padding_right) {
const long long mask_left = ((long long)1 << (format_desc->block.bits - padding_left)) - 1;
const long long mask_right = ((long long)1 << (padding_right)) - 1;
z_bitmask = lp_build_int_const_scalar(type, mask_left & mask_right);
const unsigned long long mask_left = ((unsigned long long)1 << (format_desc->block.bits - padding_left)) - 1;
const unsigned long long mask_right = ((unsigned long long)1 << (padding_right)) - 1;
z_bitmask = lp_build_int_const_scalar(type, mask_left ^ mask_right);
}
if(padding_left)