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video_core: Abstract transform feedback translation utility

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This commit is contained in:
ReinUsesLisp
2021-05-21 17:19:35 -03:00
committed by ameerj
parent 7dadb2bef3
commit 69b910e9e7
6 changed files with 145 additions and 111 deletions
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2
src/video_core/CMakeLists.txt
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@@ -187,6 +187,8 @@ add_library(video_core STATIC
textures/decoders.h
textures/texture.cpp
textures/texture.h
transform_feedback.cpp
transform_feedback.h
video_core.cpp
video_core.h
vulkan_common/vulkan_debug_callback.cpp

25
src/video_core/renderer_vulkan/fixed_pipeline_state.cpp
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@@ -15,9 +15,7 @@
#include "video_core/renderer_vulkan/vk_state_tracker.h"
namespace Vulkan {
namespace {
constexpr size_t POINT = 0;
constexpr size_t LINE = 1;
constexpr size_t POLYGON = 2;
@@ -39,6 +37,16 @@ constexpr std::array POLYGON_OFFSET_ENABLE_LUT = {
POLYGON, // Patches
};
void RefreshXfbState(VideoCommon::TransformFeedbackState& state, const Maxwell& regs) {
std::ranges::transform(regs.tfb_layouts, state.layouts.begin(), [](const auto& layout) {
return VideoCommon::TransformFeedbackState::Layout{
.stream = layout.stream,
.varying_count = layout.varying_count,
.stride = layout.stride,
};
});
state.varyings = regs.tfb_varying_locs;
}
} // Anonymous namespace
void FixedPipelineState::Refresh(Tegra::Engines::Maxwell3D& maxwell3d,
@@ -121,7 +129,7 @@ void FixedPipelineState::Refresh(Tegra::Engines::Maxwell3D& maxwell3d,
dynamic_state.Refresh(regs);
}
if (xfb_enabled != 0) {
xfb_state.Refresh(regs);
RefreshXfbState(xfb_state, regs);
}
}
@@ -164,17 +172,6 @@ void FixedPipelineState::BlendingAttachment::Refresh(const Maxwell& regs, size_t
enable.Assign(1);
}
void FixedPipelineState::TransformFeedbackState::Refresh(const Maxwell& regs) {
std::ranges::transform(regs.tfb_layouts, layouts.begin(), [](const auto& layout) {
return Layout{
.stream = layout.stream,
.varying_count = layout.varying_count,
.stride = layout.stride,
};
});
varyings = regs.tfb_varying_locs;
}
void FixedPipelineState::DynamicState::Refresh(const Maxwell& regs) {
u32 packed_front_face = PackFrontFace(regs.front_face);
if (regs.screen_y_control.triangle_rast_flip != 0) {

15
src/video_core/renderer_vulkan/fixed_pipeline_state.h
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@@ -12,6 +12,7 @@
#include "video_core/engines/maxwell_3d.h"
#include "video_core/surface.h"
#include "video_core/transform_feedback.h"
namespace Vulkan {
@@ -130,18 +131,6 @@ struct FixedPipelineState {
}
};
struct TransformFeedbackState {
struct Layout {
u32 stream;
u32 varying_count;
u32 stride;
};
std::array<Layout, Maxwell::NumTransformFeedbackBuffers> layouts;
std::array<std::array<u8, 128>, Maxwell::NumTransformFeedbackBuffers> varyings;
void Refresh(const Maxwell& regs);
};
struct DynamicState {
union {
u32 raw1;
@@ -213,7 +202,7 @@ struct FixedPipelineState {
std::array<BlendingAttachment, Maxwell::NumRenderTargets> attachments;
std::array<u16, Maxwell::NumViewports> viewport_swizzles;
DynamicState dynamic_state;
TransformFeedbackState xfb_state;
VideoCommon::TransformFeedbackState xfb_state;
void Refresh(Tegra::Engines::Maxwell3D& maxwell3d, bool has_extended_dynamic_state);

86
src/video_core/renderer_vulkan/vk_pipeline_cache.cpp
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@@ -109,88 +109,6 @@ static Shader::AttributeType CastAttributeType(const FixedPipelineState::VertexA
return Shader::AttributeType::Float;
}
std::vector<Shader::TransformFeedbackVarying> MakeTransformFeedbackVaryings(
const GraphicsPipelineCacheKey& key) {
static constexpr std::array VECTORS{
28, // gl_Position
32, // Generic 0
36, // Generic 1
40, // Generic 2
44, // Generic 3
48, // Generic 4
52, // Generic 5
56, // Generic 6
60, // Generic 7
64, // Generic 8
68, // Generic 9
72, // Generic 10
76, // Generic 11
80, // Generic 12
84, // Generic 13
88, // Generic 14
92, // Generic 15
96, // Generic 16
100, // Generic 17
104, // Generic 18
108, // Generic 19
112, // Generic 20
116, // Generic 21
120, // Generic 22
124, // Generic 23
128, // Generic 24
132, // Generic 25
136, // Generic 26
140, // Generic 27
144, // Generic 28
148, // Generic 29
152, // Generic 30
156, // Generic 31
160, // gl_FrontColor
164, // gl_FrontSecondaryColor
160, // gl_BackColor
164, // gl_BackSecondaryColor
192, // gl_TexCoord[0]
196, // gl_TexCoord[1]
200, // gl_TexCoord[2]
204, // gl_TexCoord[3]
208, // gl_TexCoord[4]
212, // gl_TexCoord[5]
216, // gl_TexCoord[6]
220, // gl_TexCoord[7]
};
std::vector<Shader::TransformFeedbackVarying> xfb(256);
for (size_t buffer = 0; buffer < Maxwell::NumTransformFeedbackBuffers; ++buffer) {
const auto& locations = key.state.xfb_state.varyings[buffer];
const auto& layout = key.state.xfb_state.layouts[buffer];
const u32 varying_count = layout.varying_count;
u32 highest = 0;
for (u32 offset = 0; offset < varying_count; ++offset) {
const u32 base_offset = offset;
const u8 location = locations[offset];
Shader::TransformFeedbackVarying varying;
varying.buffer = layout.stream;
varying.stride = layout.stride;
varying.offset = offset * 4;
varying.components = 1;
if (std::ranges::find(VECTORS, Common::AlignDown(location, 4)) != VECTORS.end()) {
UNIMPLEMENTED_IF_MSG(location % 4 != 0, "Unaligned TFB");
const u8 base_index = location / 4;
while (offset + 1 < varying_count && base_index == locations[offset + 1] / 4) {
++offset;
++varying.components;
}
}
xfb[location] = varying;
highest = std::max(highest, (base_offset + varying.components) * 4);
}
UNIMPLEMENTED_IF(highest != layout.stride);
}
return xfb;
}
Shader::RuntimeInfo MakeRuntimeInfo(const GraphicsPipelineCacheKey& key,
const Shader::IR::Program& program) {
Shader::RuntimeInfo info;
@@ -206,7 +124,7 @@ Shader::RuntimeInfo MakeRuntimeInfo(const GraphicsPipelineCacheKey& key,
info.fixed_state_point_size = point_size;
}
if (key.state.xfb_enabled != 0) {
info.xfb_varyings = MakeTransformFeedbackVaryings(key);
info.xfb_varyings = VideoCommon::MakeTransformFeedbackVaryings(key.state.xfb_state);
}
info.convert_depth_mode = gl_ndc;
}
@@ -248,7 +166,7 @@ Shader::RuntimeInfo MakeRuntimeInfo(const GraphicsPipelineCacheKey& key,
info.fixed_state_point_size = point_size;
}
if (key.state.xfb_enabled != 0) {
info.xfb_varyings = MakeTransformFeedbackVaryings(key);
info.xfb_varyings = VideoCommon::MakeTransformFeedbackVaryings(key.state.xfb_state);
}
info.convert_depth_mode = gl_ndc;
break;

98
src/video_core/transform_feedback.cpp Normal file
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@@ -0,0 +1,98 @@
// Copyright 2021 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <algorithm>
#include <array>
#include <vector>
#include "common/alignment.h"
#include "common/assert.h"
#include "shader_recompiler/shader_info.h"
#include "video_core/transform_feedback.h"
namespace VideoCommon {
std::vector<Shader::TransformFeedbackVarying> MakeTransformFeedbackVaryings(
const TransformFeedbackState& state) {
static constexpr std::array VECTORS{
28, // gl_Position
32, // Generic 0
36, // Generic 1
40, // Generic 2
44, // Generic 3
48, // Generic 4
52, // Generic 5
56, // Generic 6
60, // Generic 7
64, // Generic 8
68, // Generic 9
72, // Generic 10
76, // Generic 11
80, // Generic 12
84, // Generic 13
88, // Generic 14
92, // Generic 15
96, // Generic 16
100, // Generic 17
104, // Generic 18
108, // Generic 19
112, // Generic 20
116, // Generic 21
120, // Generic 22
124, // Generic 23
128, // Generic 24
132, // Generic 25
136, // Generic 26
140, // Generic 27
144, // Generic 28
148, // Generic 29
152, // Generic 30
156, // Generic 31
160, // gl_FrontColor
164, // gl_FrontSecondaryColor
160, // gl_BackColor
164, // gl_BackSecondaryColor
192, // gl_TexCoord[0]
196, // gl_TexCoord[1]
200, // gl_TexCoord[2]
204, // gl_TexCoord[3]
208, // gl_TexCoord[4]
212, // gl_TexCoord[5]
216, // gl_TexCoord[6]
220, // gl_TexCoord[7]
};
std::vector<Shader::TransformFeedbackVarying> xfb(256);
for (size_t buffer = 0; buffer < state.layouts.size(); ++buffer) {
const auto& locations = state.varyings[buffer];
const auto& layout = state.layouts[buffer];
const u32 varying_count = layout.varying_count;
u32 highest = 0;
for (u32 offset = 0; offset < varying_count; ++offset) {
const u32 base_offset = offset;
const u8 location = locations[offset];
Shader::TransformFeedbackVarying varying{
.buffer = layout.stream,
.stride = layout.stride,
.offset = offset * 4,
.components = 1,
};
if (std::ranges::find(VECTORS, Common::AlignDown(location, 4)) != VECTORS.end()) {
UNIMPLEMENTED_IF_MSG(location % 4 != 0, "Unaligned TFB");
const u8 base_index = location / 4;
while (offset + 1 < varying_count && base_index == locations[offset + 1] / 4) {
++offset;
++varying.components;
}
}
xfb[location] = varying;
highest = std::max(highest, (base_offset + varying.components) * 4);
}
UNIMPLEMENTED_IF(highest != layout.stride);
}
return xfb;
}
} // namespace VideoCommon

30
src/video_core/transform_feedback.h Normal file
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@@ -0,0 +1,30 @@
// Copyright 2021 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <array>
#include <vector>
#include "common/common_types.h"
#include "shader_recompiler/profile.h"
#include "video_core/engines/maxwell_3d.h"
namespace VideoCommon {
struct TransformFeedbackState {
struct Layout {
u32 stream;
u32 varying_count;
u32 stride;
};
std::array<Layout, Tegra::Engines::Maxwell3D::Regs::NumTransformFeedbackBuffers> layouts;
std::array<std::array<u8, 128>, Tegra::Engines::Maxwell3D::Regs::NumTransformFeedbackBuffers>
varyings;
};
std::vector<Shader::TransformFeedbackVarying> MakeTransformFeedbackVaryings(
const TransformFeedbackState& state);
} // namespace VideoCommon