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Merge pull request #1290 from FernandoS27/shader-header 

Implemented (Partialy) Shader Header
This commit is contained in:
bunnei 2018-09-17 18:53:14 -04:00 committed by GitHub
parent a94b623dfb 2b48cfd44b
commit fafc80d72e
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GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 111 additions and 24 deletions
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1
src/video_core/CMakeLists.txt
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@ -14,6 +14,7 @@ add_library(video_core STATIC
engines/maxwell_dma.cpp
engines/maxwell_dma.h
engines/shader_bytecode.h
engines/shader_header.h
gpu.cpp
gpu.h
macro_interpreter.cpp

103
src/video_core/engines/shader_header.h Normal file
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@ -0,0 +1,103 @@
// Copyright 2018 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include "common/bit_field.h"
#include "common/common_funcs.h"
#include "common/common_types.h"
namespace Tegra::Shader {
enum class OutputTopology : u32 {
PointList = 1,
LineStrip = 6,
TriangleStrip = 7,
};
// Documentation in:
// http://download.nvidia.com/open-gpu-doc/Shader-Program-Header/1/Shader-Program-Header.html#ImapTexture
struct Header {
union {
BitField<0, 5, u32> sph_type;
BitField<5, 5, u32> version;
BitField<10, 4, u32> shader_type;
BitField<14, 1, u32> mrt_enable;
BitField<15, 1, u32> kills_pixels;
BitField<16, 1, u32> does_global_store;
BitField<17, 4, u32> sass_version;
BitField<21, 5, u32> reserved;
BitField<26, 1, u32> does_load_or_store;
BitField<27, 1, u32> does_fp64;
BitField<28, 4, u32> stream_out_mask;
} common0;
union {
BitField<0, 24, u32> shader_local_memory_low_size;
BitField<24, 8, u32> per_patch_attribute_count;
} common1;
union {
BitField<0, 24, u32> shader_local_memory_high_size;
BitField<24, 8, u32> threads_per_input_primitive;
} common2;
union {
BitField<0, 24, u32> shader_local_memory_crs_size;
BitField<24, 4, OutputTopology> output_topology;
BitField<28, 4, u32> reserved;
} common3;
union {
BitField<0, 12, u32> max_output_vertices;
BitField<12, 8, u32> store_req_start; // NOTE: not used by geometry shaders.
BitField<24, 4, u32> reserved;
BitField<12, 8, u32> store_req_end; // NOTE: not used by geometry shaders.
} common4;
union {
struct {
INSERT_PADDING_BYTES(3); // ImapSystemValuesA
INSERT_PADDING_BYTES(1); // ImapSystemValuesB
INSERT_PADDING_BYTES(16); // ImapGenericVector[32]
INSERT_PADDING_BYTES(2); // ImapColor
INSERT_PADDING_BYTES(2); // ImapSystemValuesC
INSERT_PADDING_BYTES(5); // ImapFixedFncTexture[10]
INSERT_PADDING_BYTES(1); // ImapReserved
INSERT_PADDING_BYTES(3); // OmapSystemValuesA
INSERT_PADDING_BYTES(1); // OmapSystemValuesB
INSERT_PADDING_BYTES(16); // OmapGenericVector[32]
INSERT_PADDING_BYTES(2); // OmapColor
INSERT_PADDING_BYTES(2); // OmapSystemValuesC
INSERT_PADDING_BYTES(5); // OmapFixedFncTexture[10]
INSERT_PADDING_BYTES(1); // OmapReserved
} vtg;
struct {
INSERT_PADDING_BYTES(3); // ImapSystemValuesA
INSERT_PADDING_BYTES(1); // ImapSystemValuesB
INSERT_PADDING_BYTES(32); // ImapGenericVector[32]
INSERT_PADDING_BYTES(2); // ImapColor
INSERT_PADDING_BYTES(2); // ImapSystemValuesC
INSERT_PADDING_BYTES(10); // ImapFixedFncTexture[10]
INSERT_PADDING_BYTES(2); // ImapReserved
struct {
u32 target;
union {
BitField<0, 1, u32> sample_mask;
BitField<1, 1, u32> depth;
BitField<2, 30, u32> reserved;
};
} omap;
bool IsColorComponentOutputEnabled(u32 render_target, u32 component) const {
const u32 bit = render_target * 4 + component;
return omap.target & (1 << bit);
}
} ps;
};
};
static_assert(sizeof(Header) == 0x50, "Incorrect structure size");
} // namespace Tegra::Shader

31
src/video_core/renderer_opengl/gl_shader_decompiler.cpp
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@ -12,6 +12,7 @@
#include "common/assert.h"
#include "common/common_types.h"
#include "video_core/engines/shader_bytecode.h"
#include "video_core/engines/shader_header.h"
#include "video_core/renderer_opengl/gl_rasterizer.h"
#include "video_core/renderer_opengl/gl_shader_decompiler.h"
@ -26,7 +27,7 @@ using Tegra::Shader::Sampler;
using Tegra::Shader::SubOp;
constexpr u32 PROGRAM_END = MAX_PROGRAM_CODE_LENGTH;
constexpr u32 PROGRAM_HEADER_SIZE = 0x50;
constexpr u32 PROGRAM_HEADER_SIZE = sizeof(Tegra::Shader::Header);
class DecompileFail : public std::runtime_error {
public:
@ -674,7 +675,7 @@ public:
u32 main_offset, Maxwell3D::Regs::ShaderStage stage, const std::string& suffix)
: subroutines(subroutines), program_code(program_code), main_offset(main_offset),
stage(stage), suffix(suffix) {
std::memcpy(&header, program_code.data(), sizeof(Tegra::Shader::Header));
Generate(suffix);
}
@ -688,23 +689,6 @@ public:
}
private:
// Shader program header for a Fragment Shader.
struct FragmentHeader {
INSERT_PADDING_WORDS(5);
INSERT_PADDING_WORDS(13);
u32 enabled_color_outputs;
union {
BitField<0, 1, u32> writes_samplemask;
BitField<1, 1, u32> writes_depth;
};
bool IsColorComponentOutputEnabled(u32 render_target, u32 component) const {
const u32 bit = render_target * 4 + component;
return enabled_color_outputs & (1 << bit);
}
};
static_assert(sizeof(FragmentHeader) == PROGRAM_HEADER_SIZE, "FragmentHeader size is wrong");
/// Gets the Subroutine object corresponding to the specified address.
const Subroutine& GetSubroutine(u32 begin, u32 end) const {
const auto iter = subroutines.find(Subroutine{begin, end, suffix});
@ -1010,10 +994,8 @@ private:
/// Writes the output values from a fragment shader to the corresponding GLSL output variables.
void EmitFragmentOutputsWrite() {
ASSERT(stage == Maxwell3D::Regs::ShaderStage::Fragment);
FragmentHeader header;
std::memcpy(&header, program_code.data(), PROGRAM_HEADER_SIZE);
ASSERT_MSG(header.writes_samplemask == 0, "Samplemask write is unimplemented");
ASSERT_MSG(header.ps.omap.sample_mask == 0, "Samplemask write is unimplemented");
// Write the color outputs using the data in the shader registers, disabled
// rendertargets/components are skipped in the register assignment.
@ -1022,7 +1004,7 @@ private:
++render_target) {
// TODO(Subv): Figure out how dual-source blending is configured in the Switch.
for (u32 component = 0; component < 4; ++component) {
if (header.IsColorComponentOutputEnabled(render_target, component)) {
if (header.ps.IsColorComponentOutputEnabled(render_target, component)) {
shader.AddLine(fmt::format("FragColor{}[{}] = {};", render_target, component,
regs.GetRegisterAsFloat(current_reg)));
++current_reg;
@ -1030,7 +1012,7 @@ private:
}
}
if (header.writes_depth) {
if (header.ps.omap.depth) {
// The depth output is always 2 registers after the last color output, and current_reg
// already contains one past the last color register.
@ -2666,6 +2648,7 @@ private:
private:
const std::set<Subroutine>& subroutines;
const ProgramCode& program_code;
Tegra::Shader::Header header;
const u32 main_offset;
Maxwell3D::Regs::ShaderStage stage;
const std::string& suffix;