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// Copyright 2018 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <array>
#include <optional>
#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,
};
enum class PixelImap : u8 {
Unused = 0,
Constant = 1,
Perspective = 2,
ScreenLinear = 3,
};
// Documentation in:
// http://download.nvidia.com/open-gpu-doc/Shader-Program-Header/1/Shader-Program-Header.html
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<20, 4, u32> reserved;
BitField<24, 8, u32> store_req_end; // NOTE: not used by geometry shaders.
} common4;
union {
struct {
INSERT_PADDING_BYTES_NOINIT(3); // ImapSystemValuesA
INSERT_PADDING_BYTES_NOINIT(1); // ImapSystemValuesB
INSERT_PADDING_BYTES_NOINIT(16); // ImapGenericVector[32]
INSERT_PADDING_BYTES_NOINIT(2); // ImapColor
union {
BitField<0, 8, u16> clip_distances;
BitField<8, 1, u16> point_sprite_s;
BitField<9, 1, u16> point_sprite_t;
BitField<10, 1, u16> fog_coordinate;
BitField<12, 1, u16> tessellation_eval_point_u;
BitField<13, 1, u16> tessellation_eval_point_v;
BitField<14, 1, u16> instance_id;
BitField<15, 1, u16> vertex_id;
};
INSERT_PADDING_BYTES_NOINIT(5); // ImapFixedFncTexture[10]
INSERT_PADDING_BYTES_NOINIT(1); // ImapReserved
INSERT_PADDING_BYTES_NOINIT(3); // OmapSystemValuesA
INSERT_PADDING_BYTES_NOINIT(1); // OmapSystemValuesB
INSERT_PADDING_BYTES_NOINIT(16); // OmapGenericVector[32]
INSERT_PADDING_BYTES_NOINIT(2); // OmapColor
INSERT_PADDING_BYTES_NOINIT(2); // OmapSystemValuesC
INSERT_PADDING_BYTES_NOINIT(5); // OmapFixedFncTexture[10]
INSERT_PADDING_BYTES_NOINIT(1); // OmapReserved
} vtg;
struct {
INSERT_PADDING_BYTES_NOINIT(3); // ImapSystemValuesA
INSERT_PADDING_BYTES_NOINIT(1); // ImapSystemValuesB
union {
BitField<0, 2, PixelImap> x;
BitField<2, 2, PixelImap> y;
BitField<4, 2, PixelImap> z;
BitField<6, 2, PixelImap> w;
u8 raw;
} imap_generic_vector[32];
INSERT_PADDING_BYTES_NOINIT(2); // ImapColor
INSERT_PADDING_BYTES_NOINIT(2); // ImapSystemValuesC
INSERT_PADDING_BYTES_NOINIT(10); // ImapFixedFncTexture[10]
INSERT_PADDING_BYTES_NOINIT(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);
}
PixelImap GetPixelImap(u32 attribute) const {
const auto get_index = [this, attribute](u32 index) {
return static_cast<PixelImap>(
(imap_generic_vector[attribute].raw >> (index * 2)) & 3);
};
std::optional<PixelImap> result;
for (u32 component = 0; component < 4; ++component) {
const PixelImap index = get_index(component);
if (index == PixelImap::Unused) {
continue;
}
if (result && result != index) {
LOG_CRITICAL(HW_GPU, "Generic attribute conflict in interpolation mode");
}
result = index;
}
return result.value_or(PixelImap::Unused);
}
} ps;
std::array<u32, 0xF> raw;
};
u64 GetLocalMemorySize() const {
return (common1.shader_local_memory_low_size |
(common2.shader_local_memory_high_size << 24));
}
};
static_assert(sizeof(Header) == 0x50, "Incorrect structure size");
} // namespace Tegra::Shader
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