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// Copyright 2018 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include "core/core.h"
#include "core/hle/kernel/process.h"
#include "video_core/engines/maxwell_3d.h"
#include "video_core/renderer_opengl/gl_shader_manager.h"
namespace GLShader {
namespace Impl {
void SetShaderUniformBlockBinding(GLuint shader, const char* name,
Maxwell3D::Regs::ShaderStage binding, size_t expected_size) {
GLuint ub_index = glGetUniformBlockIndex(shader, name);
if (ub_index != GL_INVALID_INDEX) {
GLint ub_size = 0;
glGetActiveUniformBlockiv(shader, ub_index, GL_UNIFORM_BLOCK_DATA_SIZE, &ub_size);
ASSERT_MSG(ub_size == expected_size,
"Uniform block size did not match! Got {}, expected {}",
static_cast<int>(ub_size), expected_size);
glUniformBlockBinding(shader, ub_index, static_cast<GLuint>(binding));
}
}
void SetShaderUniformBlockBindings(GLuint shader) {
SetShaderUniformBlockBinding(shader, "vs_config", Maxwell3D::Regs::ShaderStage::Vertex,
sizeof(MaxwellUniformData));
SetShaderUniformBlockBinding(shader, "gs_config", Maxwell3D::Regs::ShaderStage::Geometry,
sizeof(MaxwellUniformData));
SetShaderUniformBlockBinding(shader, "fs_config", Maxwell3D::Regs::ShaderStage::Fragment,
sizeof(MaxwellUniformData));
}
void SetShaderSamplerBindings(GLuint shader) {
OpenGLState cur_state = OpenGLState::GetCurState();
GLuint old_program = std::exchange(cur_state.draw.shader_program, shader);
cur_state.Apply();
// Set the texture samplers to correspond to different texture units
for (u32 texture = 0; texture < NumTextureSamplers; ++texture) {
// Set the texture samplers to correspond to different texture units
std::string uniform_name = "tex[" + std::to_string(texture) + "]";
GLint uniform_tex = glGetUniformLocation(shader, uniform_name.c_str());
if (uniform_tex != -1) {
glUniform1i(uniform_tex, TextureUnits::MaxwellTexture(texture).id);
}
}
cur_state.draw.shader_program = old_program;
cur_state.Apply();
}
} // namespace Impl
void MaxwellUniformData::SetFromRegs(const Maxwell3D::State::ShaderStageInfo& shader_stage) {
const auto& regs = Core::System().GetInstance().GPU().Maxwell3D().regs;
// TODO(bunnei): Support more than one viewport
viewport_flip[0] = regs.viewport_transform[0].scale_x < 0.0 ? -1.0 : 1.0;
viewport_flip[1] = regs.viewport_transform[0].scale_y < 0.0 ? -1.0 : 1.0;
}
} // namespace GLShader
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