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Commit e13f7ebe by Olli Etuaho Committed by Commit Bot
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Make NVIDIA constant register zero skip specific to VS

It was found that the driver issue only affects vertex shaders, so the workaround can be simplified to affect only vertex shaders. BUG=angleproject:2294 TEST=WebGL conformance tests on passthrough command buffer, angle_end2end_tests Change-Id: Ie7fb4e75a3999e1de3d5c20d3de21e7ebb08f148 Reviewed-on: https://chromium-review.googlesource.com/889099Reviewed-by: 's avatarJamie Madill <jmadill@chromium.org> Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>
parent 199f4294
Showing with 7 additions and 15 deletions
include/platform/WorkaroundsD3D.h
......@@ -124,10 +124,10 @@ struct WorkaroundsD3D
// So we add a dummy texture as render target in such case. See http://anglebug.com/2152
bool addDummyTextureNoRenderTarget = false;
// Don't use D3D constant register zero when allocating space for uniforms. This is targeted to
// work around a bug in NVIDIA D3D driver version 388.59 where in very specific cases the driver
// would not handle constant register zero correctly.
bool skipConstantRegisterZero = false;
// Don't use D3D constant register zero when allocating space for uniforms in the vertex shader.
// This is targeted to work around a bug in NVIDIA D3D driver version 388.59 where in very
// specific cases the driver would not handle constant register zero correctly.
bool skipVSConstantRegisterZero = false;
};
} // namespace angle
......
src/libANGLE/renderer/d3d/ShaderD3D.cpp
......@@ -48,7 +48,7 @@ ShaderD3D::ShaderD3D(const gl::ShaderState &data,
{
mAdditionalOptions |= SH_EMULATE_ISNAN_FLOAT_FUNCTION;
}
if (workarounds.skipConstantRegisterZero)
if (workarounds.skipVSConstantRegisterZero && mData.getShaderType() == GL_VERTEX_SHADER)
{
mAdditionalOptions |= SH_SKIP_D3D_CONSTANT_REGISTER_ZERO;
}
......
src/libANGLE/renderer/d3d/d3d11/renderer11_utils.cpp
......@@ -1352,7 +1352,7 @@ void GenerateCaps(ID3D11Device *device,
caps->maxVertexAttributes = static_cast<GLuint>(GetMaximumVertexInputSlots(featureLevel));
caps->maxVertexUniformVectors =
static_cast<GLuint>(GetMaximumVertexUniformVectors(featureLevel));
if (workarounds.skipConstantRegisterZero)
if (workarounds.skipVSConstantRegisterZero)
{
caps->maxVertexUniformVectors -= 1;
}
......@@ -1374,10 +1374,6 @@ void GenerateCaps(ID3D11Device *device,
// Fragment shader limits
caps->maxFragmentUniformVectors =
static_cast<GLuint>(GetMaximumPixelUniformVectors(featureLevel));
if (workarounds.skipConstantRegisterZero)
{
caps->maxFragmentUniformVectors -= 1;
}
caps->maxFragmentUniformComponents = caps->maxFragmentUniformVectors * 4;
caps->maxFragmentUniformBlocks =
static_cast<GLuint>(GetMaximumPixelUniformBlocks(featureLevel));
......@@ -1394,10 +1390,6 @@ void GenerateCaps(ID3D11Device *device,
static_cast<GLuint>(GetMaxComputeWorkGroupInvocations(featureLevel));
caps->maxComputeUniformComponents =
static_cast<GLuint>(GetMaximumComputeUniformVectors(featureLevel)) * 4;
if (workarounds.skipConstantRegisterZero)
{
caps->maxComputeUniformComponents -= 4;
}
caps->maxComputeUniformBlocks =
static_cast<GLuint>(GetMaximumComputeUniformBlocks(featureLevel));
caps->maxComputeTextureImageUnits =
......@@ -2214,7 +2206,7 @@ angle::WorkaroundsD3D GenerateWorkarounds(const Renderer11DeviceCaps &deviceCaps
workarounds.flushAfterEndingTransformFeedback = IsNvidia(adapterDesc.VendorId);
workarounds.getDimensionsIgnoresBaseLevel = IsNvidia(adapterDesc.VendorId);
workarounds.skipConstantRegisterZero = IsNvidia(adapterDesc.VendorId);
workarounds.skipVSConstantRegisterZero = IsNvidia(adapterDesc.VendorId);
if (IsIntel(adapterDesc.VendorId))
{
......
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