forked from suyu/suyu
89 lines
2.7 KiB
C++
89 lines
2.7 KiB
C++
// Copyright 2018 yuzu Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#pragma once
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#include <array>
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#include <span>
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#include <glad/glad.h>
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#include "video_core/renderer_opengl/gl_resource_manager.h"
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#include "video_core/renderer_opengl/gl_device.h"
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namespace OpenGL {
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class ProgramManager {
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static constexpr size_t NUM_STAGES = 5;
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static constexpr std::array ASSEMBLY_PROGRAM_ENUMS{
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GL_VERTEX_PROGRAM_NV, GL_TESS_CONTROL_PROGRAM_NV, GL_TESS_EVALUATION_PROGRAM_NV,
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GL_GEOMETRY_PROGRAM_NV, GL_FRAGMENT_PROGRAM_NV,
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};
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public:
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explicit ProgramManager(const Device& device) {
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if (device.UseAssemblyShaders()) {
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glEnable(GL_COMPUTE_PROGRAM_NV);
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}
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}
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void BindProgram(GLuint program) {
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if (current_source_program == program) {
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return;
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}
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current_source_program = program;
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glUseProgram(program);
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}
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void BindComputeAssemblyProgram(GLuint program) {
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if (current_compute_assembly_program != program) {
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current_compute_assembly_program = program;
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glBindProgramARB(GL_COMPUTE_PROGRAM_NV, program);
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}
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if (current_source_program != 0) {
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current_source_program = 0;
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glUseProgram(0);
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}
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}
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void BindAssemblyPrograms(std::span<const OGLAssemblyProgram, NUM_STAGES> programs,
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u32 stage_mask) {
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const u32 changed_mask = current_assembly_mask ^ stage_mask;
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current_assembly_mask = stage_mask;
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if (changed_mask != 0) {
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for (size_t stage = 0; stage < NUM_STAGES; ++stage) {
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if (((changed_mask >> stage) & 1) != 0) {
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if (((stage_mask >> stage) & 1) != 0) {
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glEnable(ASSEMBLY_PROGRAM_ENUMS[stage]);
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} else {
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glDisable(ASSEMBLY_PROGRAM_ENUMS[stage]);
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}
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}
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}
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}
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for (size_t stage = 0; stage < NUM_STAGES; ++stage) {
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if (current_assembly_programs[stage] != programs[stage].handle) {
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current_assembly_programs[stage] = programs[stage].handle;
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glBindProgramARB(ASSEMBLY_PROGRAM_ENUMS[stage], programs[stage].handle);
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}
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}
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if (current_source_program != 0) {
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current_source_program = 0;
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glUseProgram(0);
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}
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}
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void RestoreGuestCompute() {}
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private:
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GLuint current_source_program = 0;
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u32 current_assembly_mask = 0;
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std::array<GLuint, NUM_STAGES> current_assembly_programs{};
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GLuint current_compute_assembly_program = 0;
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};
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} // namespace OpenGL
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