TYPE3

[iec.git] / src / type3_AndroidCloud / anbox-master / src / anbox / graphics / emugl / TextureDraw.h

diff --git a/src/type3_AndroidCloud/anbox-master/src/anbox/graphics/emugl/TextureDraw.h b/src/type3_AndroidCloud/anbox-master/src/anbox/graphics/emugl/TextureDraw.h
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+// Copyright (C) 2015 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef TEXTURE_DRAW_H
+#define TEXTURE_DRAW_H
+
+#include <EGL/egl.h>
+#include <GLES2/gl2.h>
+
+// Helper class used to draw a simple texture to the current framebuffer.
+// Usage is pretty simple:
+//
+//   1) Create a TextureDraw instance, passing the current EGLDisplay to it.
+//
+//   2) Each time you want to draw a texture, call draw(texture, rotation),
+//      where |texture| is the name of a GLES 2.x texture object, and
+//      |rotation| is an angle in degrees describing the clockwise rotation
+//      in the GL y-upwards coordinate space. This function fills the whole
+//      framebuffer with texture content.
+//
+class TextureDraw {
+ public:
+  // Create a new instance.
+  TextureDraw(EGLDisplay display);
+
+  // Destructor
+  ~TextureDraw();
+
+  // Fill the current framebuffer with the content of |texture|, which must
+  // be the name of a GLES 2.x texture object.
+  bool draw(GLuint texture);
+
+ private:
+  GLuint mVertexShader;
+  GLuint mFragmentShader;
+  GLuint mProgram;
+  GLint mPositionSlot;
+  GLint mInCoordSlot;
+  GLint mTextureSlot;
+  GLuint mVertexBuffer;
+  GLuint mIndexBuffer;
+};
+
+#endif  // TEXTURE_DRAW_H