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      1 // Copyright 2013 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 MOJO_APPS_JS_BINDINGS_GL_CONTEXT_H_
      6 #define MOJO_APPS_JS_BINDINGS_GL_CONTEXT_H_
      7 
      8 #include <GLES2/gl2.h>
      9 
     10 #include "base/memory/weak_ptr.h"
     11 #include "gin/handle.h"
     12 #include "gin/public/wrapper_info.h"
     13 #include "gin/runner.h"
     14 #include "gin/wrappable.h"
     15 #include "mojo/bindings/js/handle.h"
     16 #include "mojo/public/c/gles2/gles2.h"
     17 #include "v8/include/v8.h"
     18 
     19 namespace gin {
     20 class Arguments;
     21 class ArrayBufferView;
     22 }
     23 
     24 namespace mojo {
     25 namespace js {
     26 namespace gl {
     27 
     28 // Context implements WebGLRenderingContext.
     29 class Context : public gin::Wrappable<Context> {
     30  public:
     31   static gin::WrapperInfo kWrapperInfo;
     32 
     33   // TODO(piman): draw animation frame callback.
     34   static gin::Handle<Context> Create(
     35       v8::Isolate* isolate,
     36       mojo::Handle handle,
     37       v8::Handle<v8::Function> context_lost_callback);
     38 
     39   static void BufferData(GLenum target, const gin::ArrayBufferView& buffer,
     40                          GLenum usage);
     41   static void CompileShader(const gin::Arguments& args, GLuint shader);
     42   static GLuint CreateBuffer();
     43   static void DrawElements(GLenum mode, GLsizei count, GLenum type,
     44                            uint64_t indices);
     45   static GLint GetAttribLocation(GLuint program, const std::string& name);
     46   static std::string GetProgramInfoLog(GLuint program);
     47   static std::string GetShaderInfoLog(GLuint shader);
     48   static GLint GetUniformLocation(GLuint program, const std::string& name);
     49   static void ShaderSource(GLuint shader, const std::string& source);
     50   static void UniformMatrix4fv(GLint location, GLboolean transpose,
     51                                const gin::ArrayBufferView& buffer);
     52   static void VertexAttribPointer(GLuint index, GLint size, GLenum type,
     53                                   GLboolean normalized, GLsizei stride,
     54                                   uint64_t offset);
     55 
     56  private:
     57   virtual gin::ObjectTemplateBuilder GetObjectTemplateBuilder(
     58       v8::Isolate* isolate) OVERRIDE;
     59 
     60   explicit Context(v8::Isolate* isolate,
     61                    mojo::Handle handle,
     62                    v8::Handle<v8::Function> context_lost_callback);
     63   virtual ~Context();
     64 
     65   void ContextLost();
     66   static void ContextLostThunk(void* closure);
     67 
     68   base::WeakPtr<gin::Runner> runner_;
     69   v8::Persistent<v8::Function> context_lost_callback_;
     70   MojoGLES2Context context_;
     71 };
     72 
     73 }  // namespace gl
     74 }  // namespace js
     75 }  // namespace mojo
     76 
     77 #endif  // MOJO_APPS_JS_BINDINGS_GL_CONTEXT_H_
     78