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[DXBC] ROV: Fix depth being overwritten if stencil failed

This commit is contained in:
Triang3l 2020-09-05 19:23:45 +03:00
parent 524201eca4
commit 3daa899feb
1 changed files with 19 additions and 6 deletions
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25
src/xenia/gpu/dxbc_shader_translator_om.cc
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@ -733,12 +733,6 @@ void DxbcShaderTranslator::ROV_DepthStencilTest() {
DxbcOpAnd(DxbcDest::R(system_temp_rov_params_, 0b0001),
DxbcSrc::R(system_temp_rov_params_, DxbcSrc::kXXXX),
DxbcSrc::LU(~uint32_t(1 << i)));
// temp.x? = resulting sample depth after the depth test
// temp.y = polygon offset if not writing to oDepth
// temp.z = viewport maximum depth if not writing to oDepth
// temp.w = old depth/stencil
// sample_temp.x = free
DxbcOpMov(sample_depth_stencil_dest, sample_temp_x_src);
}
DxbcOpEndIf();
// Create packed depth/stencil, with the stencil value unchanged at this
@ -977,6 +971,25 @@ void DxbcShaderTranslator::ROV_DepthStencilTest() {
// Close the stencil test check.
DxbcOpEndIf();
// Check if the depth/stencil has failed not to modify the depth if it has.
// sample_temp.x = whether depth/stencil has passed for this sample
DxbcOpAnd(sample_temp_x_dest,
DxbcSrc::R(system_temp_rov_params_, DxbcSrc::kXXXX),
DxbcSrc::LU(1 << i));
// If the depth/stencil test has failed, don't change the depth.
// sample_temp.x = free
DxbcOpIf(false, sample_temp_x_src);
{
// Copy the new stencil over the old depth.
// temp.x? = resulting sample depth/stencil
// temp.y = polygon offset if not writing to oDepth
// temp.z = viewport maximum depth if not writing to oDepth
// temp.w = old depth/stencil
DxbcOpBFI(sample_depth_stencil_dest, DxbcSrc::LU(8), DxbcSrc::LU(0),
sample_depth_stencil_src, temp_w_src);
}
// Close the depth/stencil passing check.
DxbcOpEndIf();
// Check if the new depth/stencil is different, and thus needs to be
// written, to temp.w.
// temp.x? = resulting sample depth/stencil