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yuzu/src/shader_recompiler/program_header.h
ReinUsesLisp 7dafa96ab5 shader: Rework varyings and implement passthrough geometry shaders 
Put all varyings into a single std::bitset with helpers to access it.

Implement passthrough geometry shaders using host's.
2021-07-22 21:51:39 -04:00

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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 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 ProgramHeader {
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, 2, u32> reserved1;
BitField<24, 1, u32> geometry_passthrough;
BitField<25, 1, u32> reserved2;
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
union {
BitField<0, 1, u8> primitive_array_id;
BitField<1, 1, u8> rt_array_index;
BitField<2, 1, u8> viewport_index;
BitField<3, 1, u8> point_size;
BitField<4, 1, u8> position_x;
BitField<5, 1, u8> position_y;
BitField<6, 1, u8> position_z;
BitField<7, 1, u8> position_w;
u8 raw;
} imap_systemb;
std::array<u8, 16> imap_generic_vector;
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
union {
BitField<0, 1, u8> primitive_array_id;
BitField<1, 1, u8> rt_array_index;
BitField<2, 1, u8> viewport_index;
BitField<3, 1, u8> point_size;
BitField<4, 1, u8> position_x;
BitField<5, 1, u8> position_y;
BitField<6, 1, u8> position_z;
BitField<7, 1, u8> position_w;
u8 raw;
} omap_systemb;
std::array<u8, 16> omap_generic_vector;
INSERT_PADDING_BYTES_NOINIT(2); // OmapColor
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;
} omap_systemc;
INSERT_PADDING_BYTES_NOINIT(5); // OmapFixedFncTexture[10]
INSERT_PADDING_BYTES_NOINIT(1); // OmapReserved
[[nodiscard]] std::array<bool, 4> InputGeneric(size_t index) const noexcept {
const int data{imap_generic_vector[index >> 1] >> ((index % 2) * 4)};
return {
(data & 1) != 0,
(data & 2) != 0,
(data & 4) != 0,
(data & 8) != 0,
};
}
[[nodiscard]] std::array<bool, 4> OutputGeneric(size_t index) const noexcept {
const int data{omap_generic_vector[index >> 1] >> ((index % 2) * 4)};
return {
(data & 1) != 0,
(data & 2) != 0,
(data & 4) != 0,
(data & 8) != 0,
};
}
} vtg;
struct {
INSERT_PADDING_BYTES_NOINIT(3); // ImapSystemValuesA
union {
BitField<0, 1, u8> primitive_array_id;
BitField<1, 1, u8> rt_array_index;
BitField<2, 1, u8> viewport_index;
BitField<3, 1, u8> point_size;
BitField<4, 1, u8> position_x;
BitField<5, 1, u8> position_y;
BitField<6, 1, u8> position_z;
BitField<7, 1, u8> position_w;
BitField<0, 4, u8> first;
BitField<4, 4, u8> position;
u8 raw;
} imap_systemb;
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;
[[nodiscard]] std::array<bool, 4> EnabledOutputComponents(u32 rt) const noexcept {
const u32 bits{omap.target >> (rt * 4)};
return {(bits & 1) != 0, (bits & 2) != 0, (bits & 4) != 0, (bits & 8) != 0};
}
[[nodiscard]] std::array<PixelImap, 4> GenericInputMap(u32 attribute) const {
const auto& vector{imap_generic_vector[attribute]};
return {vector.x, vector.y, vector.z, vector.w};
}
[[nodiscard]] bool IsGenericVectorActive(size_t index) const {
return imap_generic_vector[index].raw != 0;
}
} ps;
std::array<u32, 0xf> raw;
};
[[nodiscard]] u64 LocalMemorySize() const noexcept {
return static_cast<u64>(common1.shader_local_memory_low_size) |
(static_cast<u64>(common2.shader_local_memory_high_size) << 24);
}
};
static_assert(sizeof(ProgramHeader) == 0x50, "Incorrect structure size");
} // namespace Shader
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