forked from suyu/suyu
c5284efd4f
We keep track of the current instance and update an uniform in the shaders to let them know which instance they are. Instanced vertex arrays are not yet implemented.
52 lines
2.1 KiB
C++
52 lines
2.1 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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#include "core/core.h"
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#include "core/hle/kernel/process.h"
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#include "video_core/engines/maxwell_3d.h"
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#include "video_core/renderer_opengl/gl_shader_manager.h"
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namespace GLShader {
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namespace Impl {
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static void SetShaderUniformBlockBinding(GLuint shader, const char* name,
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Maxwell3D::Regs::ShaderStage binding,
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size_t expected_size) {
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const GLuint ub_index = glGetUniformBlockIndex(shader, name);
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if (ub_index == GL_INVALID_INDEX) {
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return;
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}
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GLint ub_size = 0;
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glGetActiveUniformBlockiv(shader, ub_index, GL_UNIFORM_BLOCK_DATA_SIZE, &ub_size);
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ASSERT_MSG(static_cast<size_t>(ub_size) == expected_size,
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"Uniform block size did not match! Got {}, expected {}", ub_size, expected_size);
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glUniformBlockBinding(shader, ub_index, static_cast<GLuint>(binding));
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}
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void SetShaderUniformBlockBindings(GLuint shader) {
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SetShaderUniformBlockBinding(shader, "vs_config", Maxwell3D::Regs::ShaderStage::Vertex,
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sizeof(MaxwellUniformData));
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SetShaderUniformBlockBinding(shader, "gs_config", Maxwell3D::Regs::ShaderStage::Geometry,
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sizeof(MaxwellUniformData));
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SetShaderUniformBlockBinding(shader, "fs_config", Maxwell3D::Regs::ShaderStage::Fragment,
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sizeof(MaxwellUniformData));
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}
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} // namespace Impl
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void MaxwellUniformData::SetFromRegs(const Maxwell3D::State::ShaderStageInfo& shader_stage) {
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const auto& gpu = Core::System::GetInstance().GPU().Maxwell3D();
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const auto& regs = gpu.regs;
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const auto& state = gpu.state;
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// TODO(bunnei): Support more than one viewport
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viewport_flip[0] = regs.viewport_transform[0].scale_x < 0.0 ? -1.0f : 1.0f;
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viewport_flip[1] = regs.viewport_transform[0].scale_y < 0.0 ? -1.0f : 1.0f;
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// We only assign the instance to the first component of the vector, the rest is just padding.
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instance_id[0] = state.current_instance;
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}
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} // namespace GLShader
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