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Add support for Vertex Program A and other small shader improvements (#192)

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* Add WIP support for Vertex Program A, add the FADD_I32 shader instruction, small fix on FFMA_I encoding, nits

* Add separate subroutines for program A/B, and copy attributes to a temp

* Move finalization code to main

* Add new line after flip uniform on the shader

* Handle possible case where VPB uses an output attribute written by VPA but not available on the vbo

* Address PR feedback
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gdkchan 2018-06-27 23:55:08 -03:00 • committed by GitHub
parent 900a84ae0a
commit e6eeb6f09f
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9 changed files with 303 additions and 78 deletions
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28
Ryujinx.HLE/Gpu/Engines/NvGpuEngine3d.cs
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@ -126,7 +126,33 @@ namespace Ryujinx.HLE.Gpu.Engines
long BasePosition = MakeInt64From2xInt32(NvGpuEngine3dReg.ShaderAddress);
for (int Index = 0; Index < 6; Index++)
int Index = 1;
int VpAControl = ReadRegister(NvGpuEngine3dReg.ShaderNControl);
bool VpAEnable = (VpAControl & 1) != 0;
if (VpAEnable)
{
//Note: The maxwell supports 2 vertex programs, usually
//only VP B is used, but in some cases VP A is also used.
//In this case, it seems to function as an extra vertex
//shader stage.
//The graphics abstraction layer has a special overload for this
//case, which should merge the two shaders into one vertex shader.
int VpAOffset = ReadRegister(NvGpuEngine3dReg.ShaderNOffset);
int VpBOffset = ReadRegister(NvGpuEngine3dReg.ShaderNOffset + 0x10);
long VpAPos = BasePosition + (uint)VpAOffset;
long VpBPos = BasePosition + (uint)VpBOffset;
Gpu.Renderer.Shader.Create(Vmm, VpAPos, VpBPos, GalShaderType.Vertex);
Gpu.Renderer.Shader.Bind(VpBPos);
Index = 2;
}
for (; Index < 6; Index++)
{
int Control = ReadRegister(NvGpuEngine3dReg.ShaderNControl + Index * 0x10);
int Offset = ReadRegister(NvGpuEngine3dReg.ShaderNOffset + Index * 0x10);