1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef MEDIA_TOOLS_SHADER_BENCH_GPU_PAINTER_H_ 6 #define MEDIA_TOOLS_SHADER_BENCH_GPU_PAINTER_H_ 7 8 #include "media/tools/shader_bench/painter.h" 9 #include "ui/gl/gl_bindings.h" 10 #include "ui/gl/gl_context.h" 11 #include "ui/gl/gl_implementation.h" 12 #include "ui/gl/gl_surface.h" 13 14 // Class that renders video frames to a window via GPU. 15 class GPUPainter : public Painter { 16 public: 17 GPUPainter(); 18 virtual ~GPUPainter(); 19 20 // Returns a reference to the GL context. 21 gfx::GLSurface* surface() const { return surface_; } 22 23 // Sets context for subsequent gl calls in this painter. 24 virtual void SetGLContext(gfx::GLSurface* surface, gfx::GLContext* context); 25 26 // Creates shader program into given context, from the vertex and fragment 27 // shader source code. Returns the id of the shader program. 28 virtual GLuint CreateShaderProgram(const char* vertex_shader_source, 29 const char* fragment_shader_source); 30 31 private: 32 // Loads shader into given context, from the source code of the 33 // shader. type refers to the shader type, either GL_VERTEX_SHADER or 34 // GL_FRAGMENT_SHADER. Returns id of shader. 35 GLuint LoadShader(unsigned type, const char* shader_source); 36 37 // Reference to the gl context. 38 gfx::GLSurface* surface_; 39 gfx::GLContext* context_; 40 41 DISALLOW_COPY_AND_ASSIGN(GPUPainter); 42 }; 43 44 #endif // MEDIA_TOOLS_SHADER_BENCH_GPU_PAINTER_H_ 45
