1 files changed, 45 insertions, 0 deletions
diff --git a/intern/cycles/app/opengl/shader.h b/intern/cycles/app/opengl/shader.h
new file mode 100644
index 00000000000..6ca121ca6ff
--- /dev/null
+++ b/intern/cycles/app/opengl/shader.h
@@ -0,0 +1,45 @@
+/* SPDX-License-Identifier: Apache-2.0
+ * Copyright 2011-2022 OpenGL Foundation */
+
+#pragma once
+
+#include "util/types.h"
+
+CCL_NAMESPACE_BEGIN
+
+class OpenGLShader {
+ public:
+  static constexpr const char *position_attribute_name = "pos";
+  static constexpr const char *tex_coord_attribute_name = "texCoord";
+
+  OpenGLShader() = default;
+  virtual ~OpenGLShader() = default;
+
+  /* Get attribute location for position and texture coordinate respectively.
+   * NOTE: The shader needs to be bound to have access to those. */
+  int get_position_attrib_location();
+  int get_tex_coord_attrib_location();
+
+  void bind(int width, int height);
+  void unbind();
+
+ protected:
+  uint get_shader_program();
+
+  void create_shader_if_needed();
+  void destroy_shader();
+
+  /* Cached values of various OpenGL resources. */
+  int position_attribute_location_ = -1;
+  int tex_coord_attribute_location_ = -1;
+
+  uint shader_program_ = 0;
+  int image_texture_location_ = -1;
+  int fullscreen_location_ = -1;
+
+  /* Shader compilation attempted. Which means, that if the shader program is 0 then compilation or
+   * linking has failed. Do not attempt to re-compile the shader. */
+  bool shader_compile_attempted_ = false;
+};
+
+CCL_NAMESPACE_END