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properly implement 0 stride vertex buffers

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This commit is contained in:
Samuliak 2024-08-29 09:23:34 +02:00
parent b011d756ee
commit 7a28985454
3 changed files with 74 additions and 12 deletions
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51
src/Cafe/HW/Latte/Renderer/Metal/LatteToMtl.cpp
View File

@ -368,6 +368,57 @@ MTL::VertexFormat GetMtlVertexFormat(uint8 format)
}
}
uint32 GetMtlVertexFormatSize(uint8 format)
{
switch (format)
{
case FMT_32_32_32_32_FLOAT:
return 16;
case FMT_32_32_32_FLOAT:
return 12;
case FMT_32_32_FLOAT:
return 8;
case FMT_32_FLOAT:
return 4;
case FMT_8_8_8_8:
return 4;
case FMT_8_8_8:
return 3;
case FMT_8_8:
return 2;
case FMT_8:
return 1;
case FMT_32_32_32_32:
return 16;
case FMT_32_32_32:
return 12;
case FMT_32_32:
return 8;
case FMT_32:
return 4;
case FMT_16_16_16_16:
return 8;
case FMT_16_16_16:
return 6;
case FMT_16_16:
return 4;
case FMT_16:
return 2;
case FMT_16_16_16_16_FLOAT:
return 8;
case FMT_16_16_16_FLOAT:
return 6;
case FMT_16_16_FLOAT:
return 4;
case FMT_16_FLOAT:
return 2;
case FMT_2_10_10_10:
return 4;
default:
return 0;
}
}
MTL::IndexType GetMtlIndexType(Renderer::INDEX_TYPE indexType)
{
switch (indexType)

2
src/Cafe/HW/Latte/Renderer/Metal/LatteToMtl.h
View File

@ -42,6 +42,8 @@ MTL::PrimitiveType GetMtlPrimitiveType(LattePrimitiveMode primitiveMode);
MTL::VertexFormat GetMtlVertexFormat(uint8 format);
uint32 GetMtlVertexFormatSize(uint8 format);
MTL::IndexType GetMtlIndexType(Renderer::INDEX_TYPE indexType);
MTL::BlendOperation GetMtlBlendOp(Latte::LATTE_CB_BLENDN_CONTROL::E_COMBINEFUNC combineFunc);

33
src/Cafe/HW/Latte/Renderer/Metal/MetalPipelineCache.cpp
View File

@ -298,6 +298,7 @@ MTL::RenderPipelineState* MetalPipelineCache::GetRenderPipelineState(const Latte
{
std::optional<LatteConst::VertexFetchType2> fetchType;
uint32 minBufferStride = 0;
for (sint32 j = 0; j < bufferGroup.attribCount; ++j)
{
auto& attr = bufferGroup.attrib[j];
@ -311,6 +312,8 @@ MTL::RenderPipelineState* MetalPipelineCache::GetRenderPipelineState(const Latte
attribute->setBufferIndex(GET_MTL_VERTEX_BUFFER_INDEX(attr.attributeBufferIndex));
attribute->setFormat(GetMtlVertexFormat(attr.format));
minBufferStride = std::max(minBufferStride, attr.offset + GetMtlVertexFormatSize(attr.format));
if (fetchType.has_value())
cemu_assert_debug(fetchType == attr.fetchType);
else
@ -327,24 +330,30 @@ MTL::RenderPipelineState* MetalPipelineCache::GetRenderPipelineState(const Latte
uint32 bufferStride = (lcr.GetRawView()[bufferBaseRegisterIndex + 2] >> 11) & 0xFFFF;
bufferStride = Align(bufferStride, 4);
// HACK
auto layout = vertexDescriptor->layouts()->object(GET_MTL_VERTEX_BUFFER_INDEX(bufferIndex));
if (bufferStride == 0)
{
debug_printf("vertex buffer %u has a vertex stride of 0 bytes, using 4 bytes instead\n", bufferIndex);
bufferStride = 4;
}
// Buffer stride cannot be zero, let's use the minimum stride
bufferStride = minBufferStride;
debug_printf("vertex buffer %u has a vertex stride of 0 bytes, using %u bytes instead\n", bufferIndex, bufferStride);
auto layout = vertexDescriptor->layouts()->object(GET_MTL_VERTEX_BUFFER_INDEX(bufferIndex));
layout->setStride(bufferStride);
if (!fetchType.has_value() || fetchType == LatteConst::VertexFetchType2::VERTEX_DATA)
layout->setStepFunction(MTL::VertexStepFunctionPerVertex);
else if (fetchType == LatteConst::VertexFetchType2::INSTANCE_DATA)
layout->setStepFunction(MTL::VertexStepFunctionPerInstance);
// Additionally, constant vertex function must be used
layout->setStepFunction(MTL::VertexStepFunctionConstant);
layout->setStepRate(0);
}
else
{
debug_printf("unimplemented vertex fetch type %u\n", (uint32)fetchType.value());
cemu_assert(false);
if (!fetchType.has_value() || fetchType == LatteConst::VertexFetchType2::VERTEX_DATA)
layout->setStepFunction(MTL::VertexStepFunctionPerVertex);
else if (fetchType == LatteConst::VertexFetchType2::INSTANCE_DATA)
layout->setStepFunction(MTL::VertexStepFunctionPerInstance);
else
{
debug_printf("unimplemented vertex fetch type %u\n", (uint32)fetchType.value());
cemu_assert(false);
}
}
layout->setStride(bufferStride);
}
auto mtlVertexShader = static_cast<RendererShaderMtl*>(vertexShader->shader);