// 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, UniformBindings 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 %d, expected %zu",
                   static_cast<int>(ub_size), expected_size);
        glUniformBlockBinding(shader, ub_index, static_cast<GLuint>(binding));
    }
}

void SetShaderUniformBlockBindings(GLuint shader) {
    SetShaderUniformBlockBinding(shader, "vs_config", UniformBindings::VS, sizeof(VSUniformData));
}

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

    cur_state.draw.shader_program = old_program;
    cur_state.Apply();
}

} // namespace Impl

void MaxwellUniformData::SetFromRegs() {
}

} // namespace GLShader