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98 lines
3.6 KiB
C++
98 lines
3.6 KiB
C++
// Copyright 2017 Dolphin Emulator Project
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// SPDX-License-Identifier: GPL-2.0-or-later
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#include "VideoBackends/OGL/OGLPipeline.h"
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#include "Common/Assert.h"
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#include "VideoBackends/OGL/OGLShader.h"
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#include "VideoBackends/OGL/OGLVertexManager.h"
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#include "VideoBackends/OGL/ProgramShaderCache.h"
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#include "VideoCommon/VideoConfig.h"
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namespace OGL
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{
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static GLenum MapToGLPrimitive(PrimitiveType primitive_type)
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{
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switch (primitive_type)
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{
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case PrimitiveType::Points:
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return GL_POINTS;
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case PrimitiveType::Lines:
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return GL_LINES;
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case PrimitiveType::Triangles:
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return GL_TRIANGLES;
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case PrimitiveType::TriangleStrip:
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return GL_TRIANGLE_STRIP;
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default:
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return 0;
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}
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}
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OGLPipeline::OGLPipeline(const GLVertexFormat* vertex_format,
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const RasterizationState& rasterization_state,
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const DepthState& depth_state, const BlendingState& blending_state,
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PipelineProgram* program, GLuint gl_primitive)
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: m_vertex_format(vertex_format), m_rasterization_state(rasterization_state),
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m_depth_state(depth_state), m_blending_state(blending_state), m_program(program),
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m_gl_primitive(gl_primitive)
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{
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}
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OGLPipeline::~OGLPipeline()
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{
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// We don't want to destroy the shaders.
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ProgramShaderCache::ReleasePipelineProgram(m_program);
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}
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AbstractPipeline::CacheData OGLPipeline::GetCacheData() const
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{
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// More than one pipeline can share the same shaders. To avoid bloating the cache with multiple
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// copies of the same program combination, we set a flag on the program object so that it can't
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// be retrieved again. When booting, the pipeline cache is loaded in-order, so the additional
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// pipelines which use the program combination will re-use the already-created object.
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if (!g_ActiveConfig.backend_info.bSupportsPipelineCacheData || m_program->binary_retrieved)
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return {};
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GLint program_size = 0;
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glGetProgramiv(m_program->shader.glprogid, GL_PROGRAM_BINARY_LENGTH, &program_size);
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if (program_size == 0)
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return {};
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// Clear any existing error.
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glGetError();
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// We pack the format at the start of the buffer.
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CacheData data(program_size + sizeof(u32));
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GLsizei data_size = 0;
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GLenum program_format = 0;
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glGetProgramBinary(m_program->shader.glprogid, program_size, &data_size, &program_format,
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&data[sizeof(u32)]);
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if (glGetError() != GL_NO_ERROR || data_size == 0)
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return {};
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u32 program_format_u32 = static_cast<u32>(program_format);
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std::memcpy(&data[0], &program_format_u32, sizeof(u32));
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data.resize(data_size + sizeof(u32));
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m_program->binary_retrieved = true;
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return data;
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}
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std::unique_ptr<OGLPipeline> OGLPipeline::Create(const AbstractPipelineConfig& config,
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const void* cache_data, size_t cache_data_size)
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{
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PipelineProgram* program = ProgramShaderCache::GetPipelineProgram(
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static_cast<const GLVertexFormat*>(config.vertex_format),
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static_cast<const OGLShader*>(config.vertex_shader),
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static_cast<const OGLShader*>(config.geometry_shader),
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static_cast<const OGLShader*>(config.pixel_shader), cache_data, cache_data_size);
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if (!program)
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return nullptr;
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const GLVertexFormat* vertex_format = static_cast<const GLVertexFormat*>(config.vertex_format);
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GLenum gl_primitive = MapToGLPrimitive(config.rasterization_state.primitive);
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return std::make_unique<OGLPipeline>(vertex_format, config.rasterization_state,
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config.depth_state, config.blending_state, program,
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gl_primitive);
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}
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} // namespace OGL
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