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Merge pull request #2386 from ReinUsesLisp/shader-manager

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gl_shader_manager: Move code to source file and minor clean up
This commit is contained in:
bunnei 2019-04-13 22:09:27 -04:00 committed by GitHub
commit ee2206a1b7
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 59 additions and 32 deletions
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34
src/video_core/renderer_opengl/gl_shader_manager.cpp
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@ -2,12 +2,44 @@
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include "common/common_types.h"
#include "video_core/engines/maxwell_3d.h"
#include "video_core/renderer_opengl/gl_shader_manager.h"
namespace OpenGL::GLShader {
using Tegra::Engines::Maxwell3D;
ProgramManager::ProgramManager() {
pipeline.Create();
}
ProgramManager::~ProgramManager() = default;
void ProgramManager::ApplyTo(OpenGLState& state) {
UpdatePipeline();
state.draw.shader_program = 0;
state.draw.program_pipeline = pipeline.handle;
}
void ProgramManager::UpdatePipeline() {
// Avoid updating the pipeline when values have no changed
if (old_state == current_state) {
return;
}
// Workaround for AMD bug
constexpr GLenum all_used_stages{GL_VERTEX_SHADER_BIT | GL_GEOMETRY_SHADER_BIT |
GL_FRAGMENT_SHADER_BIT};
glUseProgramStages(pipeline.handle, all_used_stages, 0);
glUseProgramStages(pipeline.handle, GL_VERTEX_SHADER_BIT, current_state.vertex_shader);
glUseProgramStages(pipeline.handle, GL_GEOMETRY_SHADER_BIT, current_state.geometry_shader);
glUseProgramStages(pipeline.handle, GL_FRAGMENT_SHADER_BIT, current_state.fragment_shader);
old_state = current_state;
}
void MaxwellUniformData::SetFromRegs(const Maxwell3D& maxwell, std::size_t shader_stage) {
const auto& regs = maxwell.regs;
const auto& state = maxwell.state;
@ -16,7 +48,7 @@ void MaxwellUniformData::SetFromRegs(const Maxwell3D& maxwell, std::size_t shade
viewport_flip[0] = regs.viewport_transform[0].scale_x < 0.0 ? -1.0f : 1.0f;
viewport_flip[1] = regs.viewport_transform[0].scale_y < 0.0 ? -1.0f : 1.0f;
u32 func = static_cast<u32>(regs.alpha_test_func);
auto func{static_cast<u32>(regs.alpha_test_func)};
// Normalize the gl variants of opCompare to be the same as the normal variants
const u32 op_gl_variant_base = static_cast<u32>(Maxwell3D::Regs::ComparisonOp::Never);
if (func >= op_gl_variant_base) {

57
src/video_core/renderer_opengl/gl_shader_manager.h
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@ -4,6 +4,8 @@
#pragma once
#include <cstddef>
#include <glad/glad.h>
#include "video_core/renderer_opengl/gl_resource_manager.h"
@ -38,55 +40,48 @@ static_assert(sizeof(MaxwellUniformData) < 16384,
class ProgramManager {
public:
ProgramManager() {
pipeline.Create();
}
explicit ProgramManager();
~ProgramManager();
void ApplyTo(OpenGLState& state);
void UseProgrammableVertexShader(GLuint program) {
vs = program;
current_state.vertex_shader = program;
}
void UseProgrammableGeometryShader(GLuint program) {
gs = program;
current_state.geometry_shader = program;
}
void UseProgrammableFragmentShader(GLuint program) {
fs = program;
current_state.fragment_shader = program;
}
void UseTrivialGeometryShader() {
gs = 0;
}
void ApplyTo(OpenGLState& state) {
UpdatePipeline();
state.draw.shader_program = 0;
state.draw.program_pipeline = pipeline.handle;
current_state.geometry_shader = 0;
}
private:
void UpdatePipeline() {
// Avoid updating the pipeline when values have no changed
if (old_vs == vs && old_fs == fs && old_gs == gs)
return;
// Workaround for AMD bug
glUseProgramStages(pipeline.handle,
GL_VERTEX_SHADER_BIT | GL_GEOMETRY_SHADER_BIT | GL_FRAGMENT_SHADER_BIT,
0);
struct PipelineState {
bool operator==(const PipelineState& rhs) const {
return vertex_shader == rhs.vertex_shader && fragment_shader == rhs.fragment_shader &&
geometry_shader == rhs.geometry_shader;
}
glUseProgramStages(pipeline.handle, GL_VERTEX_SHADER_BIT, vs);
glUseProgramStages(pipeline.handle, GL_GEOMETRY_SHADER_BIT, gs);
glUseProgramStages(pipeline.handle, GL_FRAGMENT_SHADER_BIT, fs);
bool operator!=(const PipelineState& rhs) const {
return !operator==(rhs);
}
// Update the old values
old_vs = vs;
old_fs = fs;
old_gs = gs;
}
GLuint vertex_shader{};
GLuint fragment_shader{};
GLuint geometry_shader{};
};
void UpdatePipeline();
OGLPipeline pipeline;
GLuint vs{}, fs{}, gs{};
GLuint old_vs{}, old_fs{}, old_gs{};
PipelineState current_state;
PipelineState old_state;
};
} // namespace OpenGL::GLShader