diff options
Diffstat (limited to '')
| -rw-r--r-- | src/video_core/renderer_opengl/gl_shader_decompiler.cpp | 163 |
1 files changed, 121 insertions, 42 deletions
diff --git a/src/video_core/renderer_opengl/gl_shader_decompiler.cpp b/src/video_core/renderer_opengl/gl_shader_decompiler.cpp index 9cb115959..2c49aeaac 100644 --- a/src/video_core/renderer_opengl/gl_shader_decompiler.cpp +++ b/src/video_core/renderer_opengl/gl_shader_decompiler.cpp @@ -37,6 +37,7 @@ using Tegra::Shader::IpaMode; using Tegra::Shader::IpaSampleMode; using Tegra::Shader::PixelImap; using Tegra::Shader::Register; +using Tegra::Shader::TextureType; using VideoCommon::Shader::BuildTransformFeedback; using VideoCommon::Shader::Registry; @@ -61,8 +62,8 @@ struct TextureDerivates {}; using TextureArgument = std::pair<Type, Node>; using TextureIR = std::variant<TextureOffset, TextureDerivates, TextureArgument>; -constexpr u32 MAX_CONSTBUFFER_ELEMENTS = - static_cast<u32>(Maxwell::MaxConstBufferSize) / (4 * sizeof(float)); +constexpr u32 MAX_CONSTBUFFER_SCALARS = static_cast<u32>(Maxwell::MaxConstBufferSize) / sizeof(u32); +constexpr u32 MAX_CONSTBUFFER_ELEMENTS = MAX_CONSTBUFFER_SCALARS / sizeof(u32); constexpr std::string_view CommonDeclarations = R"(#define ftoi floatBitsToInt #define ftou floatBitsToUint @@ -402,6 +403,13 @@ std::string FlowStackTopName(MetaStackClass stack) { return fmt::format("{}_flow_stack_top", GetFlowStackPrefix(stack)); } +bool UseUnifiedUniforms(const Device& device, const ShaderIR& ir, ShaderType stage) { + const u32 num_ubos = static_cast<u32>(ir.GetConstantBuffers().size()); + // We waste one UBO for emulation + const u32 num_available_ubos = device.GetMaxUniformBuffers(stage) - 1; + return num_ubos > num_available_ubos; +} + struct GenericVaryingDescription { std::string name; u8 first_element = 0; @@ -412,8 +420,9 @@ class GLSLDecompiler final { public: explicit GLSLDecompiler(const Device& device, const ShaderIR& ir, const Registry& registry, ShaderType stage, std::string_view identifier, std::string_view suffix) - : device{device}, ir{ir}, registry{registry}, stage{stage}, - identifier{identifier}, suffix{suffix}, header{ir.GetHeader()} { + : device{device}, ir{ir}, registry{registry}, stage{stage}, identifier{identifier}, + suffix{suffix}, header{ir.GetHeader()}, use_unified_uniforms{ + UseUnifiedUniforms(device, ir, stage)} { if (stage != ShaderType::Compute) { transform_feedback = BuildTransformFeedback(registry.GetGraphicsInfo()); } @@ -518,6 +527,9 @@ private: if (device.HasImageLoadFormatted()) { code.AddLine("#extension GL_EXT_shader_image_load_formatted : require"); } + if (device.HasTextureShadowLod()) { + code.AddLine("#extension GL_EXT_texture_shadow_lod : require"); + } if (device.HasWarpIntrinsics()) { code.AddLine("#extension GL_NV_gpu_shader5 : require"); code.AddLine("#extension GL_NV_shader_thread_group : require"); @@ -618,7 +630,9 @@ private: break; } } - if (stage != ShaderType::Vertex || device.HasVertexViewportLayer()) { + + if (stage != ShaderType::Geometry && + (stage != ShaderType::Vertex || device.HasVertexViewportLayer())) { if (ir.UsesLayer()) { code.AddLine("int gl_Layer;"); } @@ -647,6 +661,16 @@ private: --code.scope; code.AddLine("}};"); code.AddNewLine(); + + if (stage == ShaderType::Geometry) { + if (ir.UsesLayer()) { + code.AddLine("out int gl_Layer;"); + } + if (ir.UsesViewportIndex()) { + code.AddLine("out int gl_ViewportIndex;"); + } + } + code.AddNewLine(); } void DeclareRegisters() { @@ -834,12 +858,24 @@ private: } void DeclareConstantBuffers() { + if (use_unified_uniforms) { + const u32 binding = device.GetBaseBindings(stage).shader_storage_buffer + + static_cast<u32>(ir.GetGlobalMemory().size()); + code.AddLine("layout (std430, binding = {}) readonly buffer UnifiedUniforms {{", + binding); + code.AddLine(" uint cbufs[];"); + code.AddLine("}};"); + code.AddNewLine(); + return; + } + u32 binding = device.GetBaseBindings(stage).uniform_buffer; - for (const auto& buffers : ir.GetConstantBuffers()) { - const auto index = buffers.first; + for (const auto [index, info] : ir.GetConstantBuffers()) { + const u32 num_elements = Common::AlignUp(info.GetSize(), 4) / 4; + const u32 size = info.IsIndirect() ? MAX_CONSTBUFFER_ELEMENTS : num_elements; code.AddLine("layout (std140, binding = {}) uniform {} {{", binding++, GetConstBufferBlock(index)); - code.AddLine(" uvec4 {}[{}];", GetConstBuffer(index), MAX_CONSTBUFFER_ELEMENTS); + code.AddLine(" uvec4 {}[{}];", GetConstBuffer(index), size); code.AddLine("}};"); code.AddNewLine(); } @@ -877,13 +913,13 @@ private: return "samplerBuffer"; } switch (sampler.type) { - case Tegra::Shader::TextureType::Texture1D: + case TextureType::Texture1D: return "sampler1D"; - case Tegra::Shader::TextureType::Texture2D: + case TextureType::Texture2D: return "sampler2D"; - case Tegra::Shader::TextureType::Texture3D: + case TextureType::Texture3D: return "sampler3D"; - case Tegra::Shader::TextureType::TextureCube: + case TextureType::TextureCube: return "samplerCube"; default: UNREACHABLE(); @@ -1038,42 +1074,51 @@ private: if (const auto cbuf = std::get_if<CbufNode>(&*node)) { const Node offset = cbuf->GetOffset(); + const u32 base_unified_offset = cbuf->GetIndex() * MAX_CONSTBUFFER_SCALARS; + if (const auto immediate = std::get_if<ImmediateNode>(&*offset)) { // Direct access const u32 offset_imm = immediate->GetValue(); ASSERT_MSG(offset_imm % 4 == 0, "Unaligned cbuf direct access"); - return {fmt::format("{}[{}][{}]", GetConstBuffer(cbuf->GetIndex()), - offset_imm / (4 * 4), (offset_imm / 4) % 4), - Type::Uint}; + if (use_unified_uniforms) { + return {fmt::format("cbufs[{}]", base_unified_offset + offset_imm / 4), + Type::Uint}; + } else { + return {fmt::format("{}[{}][{}]", GetConstBuffer(cbuf->GetIndex()), + offset_imm / (4 * 4), (offset_imm / 4) % 4), + Type::Uint}; + } } - if (std::holds_alternative<OperationNode>(*offset)) { - // Indirect access - const std::string final_offset = code.GenerateTemporary(); - code.AddLine("uint {} = {} >> 2;", final_offset, Visit(offset).AsUint()); + // Indirect access + if (use_unified_uniforms) { + return {fmt::format("cbufs[{} + ({} >> 2)]", base_unified_offset, + Visit(offset).AsUint()), + Type::Uint}; + } - if (!device.HasComponentIndexingBug()) { - return {fmt::format("{}[{} >> 2][{} & 3]", GetConstBuffer(cbuf->GetIndex()), - final_offset, final_offset), - Type::Uint}; - } + const std::string final_offset = code.GenerateTemporary(); + code.AddLine("uint {} = {} >> 2;", final_offset, Visit(offset).AsUint()); - // AMD's proprietary GLSL compiler emits ill code for variable component access. - // To bypass this driver bug generate 4 ifs, one per each component. - const std::string pack = code.GenerateTemporary(); - code.AddLine("uvec4 {} = {}[{} >> 2];", pack, GetConstBuffer(cbuf->GetIndex()), - final_offset); - - const std::string result = code.GenerateTemporary(); - code.AddLine("uint {};", result); - for (u32 swizzle = 0; swizzle < 4; ++swizzle) { - code.AddLine("if (({} & 3) == {}) {} = {}{};", final_offset, swizzle, result, - pack, GetSwizzle(swizzle)); - } - return {result, Type::Uint}; + if (!device.HasComponentIndexingBug()) { + return {fmt::format("{}[{} >> 2][{} & 3]", GetConstBuffer(cbuf->GetIndex()), + final_offset, final_offset), + Type::Uint}; } - UNREACHABLE_MSG("Unmanaged offset node type"); + // AMD's proprietary GLSL compiler emits ill code for variable component access. + // To bypass this driver bug generate 4 ifs, one per each component. + const std::string pack = code.GenerateTemporary(); + code.AddLine("uvec4 {} = {}[{} >> 2];", pack, GetConstBuffer(cbuf->GetIndex()), + final_offset); + + const std::string result = code.GenerateTemporary(); + code.AddLine("uint {};", result); + for (u32 swizzle = 0; swizzle < 4; ++swizzle) { + code.AddLine("if (({} & 3) == {}) {} = {}{};", final_offset, swizzle, result, pack, + GetSwizzle(swizzle)); + } + return {result, Type::Uint}; } if (const auto gmem = std::get_if<GmemNode>(&*node)) { @@ -1339,8 +1384,19 @@ private: const std::size_t count = operation.GetOperandsCount(); const bool has_array = meta->sampler.is_array; const bool has_shadow = meta->sampler.is_shadow; + const bool workaround_lod_array_shadow_as_grad = + !device.HasTextureShadowLod() && function_suffix == "Lod" && meta->sampler.is_shadow && + ((meta->sampler.type == TextureType::Texture2D && meta->sampler.is_array) || + meta->sampler.type == TextureType::TextureCube); + + std::string expr = "texture"; + + if (workaround_lod_array_shadow_as_grad) { + expr += "Grad"; + } else { + expr += function_suffix; + } - std::string expr = "texture" + function_suffix; if (!meta->aoffi.empty()) { expr += "Offset"; } else if (!meta->ptp.empty()) { @@ -1374,6 +1430,16 @@ private: expr += ')'; } + if (workaround_lod_array_shadow_as_grad) { + switch (meta->sampler.type) { + case TextureType::Texture2D: + return expr + ", vec2(0.0), vec2(0.0))"; + case TextureType::TextureCube: + return expr + ", vec3(0.0), vec3(0.0))"; + } + UNREACHABLE(); + } + for (const auto& variant : extras) { if (const auto argument = std::get_if<TextureArgument>(&variant)) { expr += GenerateTextureArgument(*argument); @@ -2000,8 +2066,19 @@ private: const auto meta = std::get_if<MetaTexture>(&operation.GetMeta()); ASSERT(meta); - std::string expr = GenerateTexture( - operation, "Lod", {TextureArgument{Type::Float, meta->lod}, TextureOffset{}}); + std::string expr{}; + + if (!device.HasTextureShadowLod() && meta->sampler.is_shadow && + ((meta->sampler.type == TextureType::Texture2D && meta->sampler.is_array) || + meta->sampler.type == TextureType::TextureCube)) { + LOG_ERROR(Render_OpenGL, + "Device lacks GL_EXT_texture_shadow_lod, using textureGrad as a workaround"); + expr = GenerateTexture(operation, "Lod", {}); + } else { + expr = GenerateTexture(operation, "Lod", + {TextureArgument{Type::Float, meta->lod}, TextureOffset{}}); + } + if (meta->sampler.is_shadow) { expr = "vec4(" + expr + ')'; } @@ -2710,6 +2787,7 @@ private: const std::string_view identifier; const std::string_view suffix; const Header header; + const bool use_unified_uniforms; std::unordered_map<u8, VaryingTFB> transform_feedback; ShaderWriter code; @@ -2905,7 +2983,7 @@ void GLSLDecompiler::DecompileAST() { } // Anonymous namespace -ShaderEntries MakeEntries(const VideoCommon::Shader::ShaderIR& ir) { +ShaderEntries MakeEntries(const Device& device, const ShaderIR& ir, ShaderType stage) { ShaderEntries entries; for (const auto& cbuf : ir.GetConstantBuffers()) { entries.const_buffers.emplace_back(cbuf.second.GetMaxOffset(), cbuf.second.IsIndirect(), @@ -2926,6 +3004,7 @@ ShaderEntries MakeEntries(const VideoCommon::Shader::ShaderIR& ir) { entries.clip_distances = (clip_distances[i] ? 1U : 0U) << i; } entries.shader_length = ir.GetLength(); + entries.use_unified_uniforms = UseUnifiedUniforms(device, ir, stage); return entries; } |