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shader_recompiler: add gl_Layer translation GS for older hardware

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This commit is contained in:
Liam 2022-11-30 17:16:00 -05:00
parent d6b63239ae
commit 3ef006b5ab
9 changed files with 230 additions and 6 deletions
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37
src/video_core/renderer_opengl/gl_shader_cache.cpp
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@ -39,6 +39,7 @@ using Shader::Backend::GLASM::EmitGLASM;
using Shader::Backend::GLSL::EmitGLSL;
using Shader::Backend::SPIRV::EmitSPIRV;
using Shader::Maxwell::ConvertLegacyToGeneric;
using Shader::Maxwell::GenerateGeometryPassthrough;
using Shader::Maxwell::MergeDualVertexPrograms;
using Shader::Maxwell::TranslateProgram;
using VideoCommon::ComputeEnvironment;
@ -56,6 +57,17 @@ auto MakeSpan(Container& container) {
return std::span(container.data(), container.size());
}
Shader::OutputTopology MaxwellToOutputTopology(Maxwell::PrimitiveTopology topology) {
switch (topology) {
case Maxwell::PrimitiveTopology::Points:
return Shader::OutputTopology::PointList;
case Maxwell::PrimitiveTopology::LineStrip:
return Shader::OutputTopology::LineStrip;
default:
return Shader::OutputTopology::TriangleStrip;
}
}
Shader::RuntimeInfo MakeRuntimeInfo(const GraphicsPipelineKey& key,
const Shader::IR::Program& program,
const Shader::IR::Program* previous_program,
@ -220,6 +232,7 @@ ShaderCache::ShaderCache(RasterizerOpenGL& rasterizer_, Core::Frontend::EmuWindo
.support_int64 = device.HasShaderInt64(),
.needs_demote_reorder = device.IsAmd(),
.support_snorm_render_buffer = false,
.support_viewport_index_layer = device.HasVertexViewportLayer(),
} {
if (use_asynchronous_shaders) {
workers = CreateWorkers();
@ -314,9 +327,7 @@ GraphicsPipeline* ShaderCache::CurrentGraphicsPipeline() {
const auto& regs{maxwell3d->regs};
graphics_key.raw = 0;
graphics_key.early_z.Assign(regs.mandated_early_z != 0 ? 1 : 0);
graphics_key.gs_input_topology.Assign(graphics_key.unique_hashes[4] != 0
? regs.draw.topology.Value()
: Maxwell::PrimitiveTopology{});
graphics_key.gs_input_topology.Assign(regs.draw.topology.Value());
graphics_key.tessellation_primitive.Assign(regs.tessellation.params.domain_type.Value());
graphics_key.tessellation_spacing.Assign(regs.tessellation.params.spacing.Value());
graphics_key.tessellation_clockwise.Assign(
@ -415,7 +426,19 @@ std::unique_ptr<GraphicsPipeline> ShaderCache::CreateGraphicsPipeline(
std::array<Shader::IR::Program, Maxwell::MaxShaderProgram> programs;
const bool uses_vertex_a{key.unique_hashes[0] != 0};
const bool uses_vertex_b{key.unique_hashes[1] != 0};
// Layer passthrough generation for devices without GL_ARB_shader_viewport_layer_array
Shader::IR::Program* layer_source_program{};
for (size_t index = 0; index < Maxwell::MaxShaderProgram; ++index) {
const bool is_emulated_stage = layer_source_program != nullptr &&
index == static_cast<u32>(Maxwell::ShaderType::Geometry);
if (key.unique_hashes[index] == 0 && is_emulated_stage) {
auto topology = MaxwellToOutputTopology(key.gs_input_topology);
programs[index] = GenerateGeometryPassthrough(pools.inst, pools.block, host_info,
*layer_source_program, topology);
continue;
}
if (key.unique_hashes[index] == 0) {
continue;
}
@ -443,6 +466,10 @@ std::unique_ptr<GraphicsPipeline> ShaderCache::CreateGraphicsPipeline(
Shader::NumDescriptors(program_vb.info.storage_buffers_descriptors);
programs[index] = MergeDualVertexPrograms(program_va, program_vb, env);
}
if (programs[index].info.requires_layer_emulation) {
layer_source_program = &programs[index];
}
}
const u32 glasm_storage_buffer_limit{device.GetMaxGLASMStorageBufferBlocks()};
const bool glasm_use_storage_buffers{total_storage_buffers <= glasm_storage_buffer_limit};
@ -456,7 +483,9 @@ std::unique_ptr<GraphicsPipeline> ShaderCache::CreateGraphicsPipeline(
const bool use_glasm{device.UseAssemblyShaders()};
const size_t first_index = uses_vertex_a && uses_vertex_b ? 1 : 0;
for (size_t index = first_index; index < Maxwell::MaxShaderProgram; ++index) {
if (key.unique_hashes[index] == 0) {
const bool is_emulated_stage = layer_source_program != nullptr &&
index == static_cast<u32>(Maxwell::ShaderType::Geometry);
if (key.unique_hashes[index] == 0 && !is_emulated_stage) {
continue;
}
UNIMPLEMENTED_IF(index == 0);