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GPU/HW: Fix MSAA+depth buffer combination

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Clear should wipe out all samples, copy should copy all samples.
This commit is contained in:
Stenzek 2025-05-17 19:44:14 +10:00
parent 4a707afae1
commit 17dfb95d6a
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3 changed files with 30 additions and 9 deletions
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17
src/core/gpu_hw.cpp
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@ -1687,21 +1687,19 @@ bool GPU_HW::CompilePipelines(Error* error)
return false;
}
plconfig.SetTargetFormats(VRAM_RT_FORMAT);
plconfig.render_pass_flags = GPUPipeline::NoRenderPassFlags;
plconfig.depth = GPUPipeline::DepthState::GetNoTestsState();
plconfig.blend = GPUPipeline::BlendState::GetNoBlendingState();
plconfig.samples = 1;
plconfig.per_sample_shading = false;
if (m_pgxp_depth_buffer)
{
std::unique_ptr<GPUShader> fs = g_gpu_device->CreateShader(GPUShaderStage::Fragment, shadergen.GetLanguage(),
shadergen.GenerateCopyFragmentShader(), error);
std::unique_ptr<GPUShader> fs = g_gpu_device->CreateShader(
GPUShaderStage::Fragment, shadergen.GetLanguage(), shadergen.GenerateVRAMCopyDepthFragmentShader(msaa), error);
if (!fs)
return false;
plconfig.fragment_shader = fs.get();
plconfig.render_pass_flags = GPUPipeline::NoRenderPassFlags;
plconfig.depth = GPUPipeline::DepthState::GetNoTestsState();
plconfig.blend = GPUPipeline::BlendState::GetNoBlendingState();
plconfig.samples = m_multisamples;
plconfig.per_sample_shading = true;
plconfig.SetTargetFormats(VRAM_DS_COLOR_FORMAT);
if (!(m_copy_depth_pipeline = g_gpu_device->CreatePipeline(plconfig, error)))
return false;
@ -1714,6 +1712,7 @@ bool GPU_HW::CompilePipelines(Error* error)
SetScreenQuadInputLayout(plconfig);
plconfig.vertex_shader = m_screen_quad_vertex_shader.get();
plconfig.fragment_shader = fs.get();
plconfig.per_sample_shading = false;
if (!m_use_rov_for_shader_blend)
{
plconfig.SetTargetFormats(VRAM_RT_FORMAT, depth_buffer_format);

21
src/core/gpu_hw_shadergen.cpp
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@ -1917,6 +1917,27 @@ std::string GPU_HW_ShaderGen::GenerateVRAMUpdateDepthFragmentShader(bool msaa) c
return std::move(ss).str();
}
std::string GPU_HW_ShaderGen::GenerateVRAMCopyDepthFragmentShader(bool msaa) const
{
std::stringstream ss;
WriteHeader(ss);
DefineMacro(ss, "MULTISAMPLED", msaa);
DeclareTexture(ss, "samp0", 0, msaa);
DeclareFragmentEntryPoint(ss, 0, 1, {}, msaa, 1, false, false, msaa, msaa, msaa);
ss << R"(
{
#if MULTISAMPLED
o_col0 = float4(LOAD_TEXTURE_MS(samp0, int2(v_pos.xy), int(f_sample_index)).r, 0.0, 0.0, 0.0);
#else
o_col0 = float4(SAMPLE_TEXTURE(samp0, v_tex0).r, 0.0, 0.0, 0.0);
#endif
}
)";
return std::move(ss).str();
}
std::string GPU_HW_ShaderGen::GenerateVRAMClearDepthFragmentShader(bool write_depth_as_rt) const
{
std::stringstream ss;

1
src/core/gpu_hw_shadergen.h
View File

@ -35,6 +35,7 @@ public:
std::string GenerateVRAMFillFragmentShader(bool wrapped, bool interlaced, bool write_mask_as_depth,
bool write_depth_as_rt) const;
std::string GenerateVRAMUpdateDepthFragmentShader(bool msaa) const;
std::string GenerateVRAMCopyDepthFragmentShader(bool msaa) const;
std::string GenerateVRAMClearDepthFragmentShader(bool write_depth_as_rt) const;
std::string GenerateVRAMExtractFragmentShader(u32 resolution_scale, u32 multisamples, bool color_24bit,
bool depth_buffer) const;