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// Copyright 2019 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <cstddef>
#include <glad/glad.h>
#include "common/logging/log.h"
#include "video_core/renderer_opengl/gl_device.h"
namespace OpenGL {
namespace {
template <typename T>
T GetInteger(GLenum pname) {
GLint temporary;
glGetIntegerv(pname, &temporary);
return static_cast<T>(temporary);
}
} // Anonymous namespace
Device::Device() {
uniform_buffer_alignment = GetInteger<std::size_t>(GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT);
has_variable_aoffi = TestVariableAoffi();
}
bool Device::TestVariableAoffi() {
const GLchar* AOFFI_TEST = R"(#version 430 core
uniform sampler2D tex;
uniform ivec2 variable_offset;
void main() {
gl_Position = textureOffset(tex, vec2(0), variable_offset);
}
)";
const GLuint shader{glCreateShaderProgramv(GL_VERTEX_SHADER, 1, &AOFFI_TEST)};
GLint link_status{};
glGetProgramiv(shader, GL_LINK_STATUS, &link_status);
glDeleteProgram(shader);
const bool supported{link_status == GL_TRUE};
LOG_INFO(Render_OpenGL, "Renderer_VariableAOFFI: {}", supported);
return supported;
}
} // namespace OpenGL
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