1 files changed, 45 insertions, 0 deletions
diff --git a/src/video_core/renderer_opengl/gl_device.cpp b/src/video_core/renderer_opengl/gl_device.cpp
new file mode 100644
index 000000000..b6d9e0ddb
--- /dev/null
+++ b/src/video_core/renderer_opengl/gl_device.cpp
@@ -0,0 +1,45 @@
+// 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