Refactor WebGraphicsContext3D to use WGC3D types which match corresponding GL...

chrome/renderer/webgraphicscontext3d_command_buffer_impl.h

Index: chrome/renderer/webgraphicscontext3d_command_buffer_impl.h
===================================================================
--- chrome/renderer/webgraphicscontext3d_command_buffer_impl.h	(revision 72809)
+++ chrome/renderer/webgraphicscontext3d_command_buffer_impl.h	(working copy)
@@ -32,6 +32,20 @@
 
 using WebKit::WebGLId;
 
+#if defined(USE_WGC3D_TYPES)
+
+using WebKit::WGC3Dchar;
+using WebKit::WGC3Denum;
+using WebKit::WGC3Dboolean;
+using WebKit::WGC3Dbitfield;
+using WebKit::WGC3Dint;
+using WebKit::WGC3Dsizei;
+using WebKit::WGC3Duint;
+using WebKit::WGC3Dfloat;
+using WebKit::WGC3Dclampf;
+using WebKit::WGC3Dintptr;
+using WebKit::WGC3Dsizeiptr;
+
 class WebGraphicsContext3DCommandBufferImpl
     : public WebKit::WebGraphicsContext3D {
  public:
@@ -50,6 +64,411 @@
   virtual int width();
   virtual int height();
 
+  virtual bool isGLES2Compliant();
+
+  virtual void reshape(int width, int height);
+
+  virtual bool readBackFramebuffer(unsigned char* pixels, size_t buffer_size);
+
+  virtual WebGLId getPlatformTextureId();
+  virtual void prepareTexture();
+
+  virtual void activeTexture(WGC3Denum texture);
+  virtual void attachShader(WebGLId program, WebGLId shader);
+  virtual void bindAttribLocation(WebGLId program, WGC3Duint index,
+                                  const WGC3Dchar* name);
+  virtual void bindBuffer(WGC3Denum target, WebGLId buffer);
+  virtual void bindFramebuffer(WGC3Denum target, WebGLId framebuffer);
+  virtual void bindRenderbuffer(WGC3Denum target, WebGLId renderbuffer);
+  virtual void bindTexture(WGC3Denum target, WebGLId texture);
+  virtual void blendColor(WGC3Dclampf red, WGC3Dclampf green,
+                          WGC3Dclampf blue, WGC3Dclampf alpha);
+  virtual void blendEquation(WGC3Denum mode);
+  virtual void blendEquationSeparate(WGC3Denum modeRGB,
+                                     WGC3Denum modeAlpha);
+  virtual void blendFunc(WGC3Denum sfactor, WGC3Denum dfactor);
+  virtual void blendFuncSeparate(WGC3Denum srcRGB,
+                                 WGC3Denum dstRGB,
+                                 WGC3Denum srcAlpha,
+                                 WGC3Denum dstAlpha);
+
+  virtual void bufferData(WGC3Denum target, WGC3Dsizeiptr size,
+                          const void* data, WGC3Denum usage);
+  virtual void bufferSubData(WGC3Denum target, WGC3Dintptr offset,
+                             WGC3Dsizeiptr size, const void* data);
+
+  virtual WGC3Denum checkFramebufferStatus(WGC3Denum target);
+  virtual void clear(WGC3Dbitfield mask);
+  virtual void clearColor(WGC3Dclampf red, WGC3Dclampf green,
+                          WGC3Dclampf blue, WGC3Dclampf alpha);
+  virtual void clearDepth(WGC3Dclampf depth);
+  virtual void clearStencil(WGC3Dint s);
+  virtual void colorMask(WGC3Dboolean red, WGC3Dboolean green,
+                         WGC3Dboolean blue, WGC3Dboolean alpha);
+  virtual void compileShader(WebGLId shader);
+
+  virtual void copyTexImage2D(WGC3Denum target,
+                              WGC3Dint level,
+                              WGC3Denum internalformat,
+                              WGC3Dint x,
+                              WGC3Dint y,
+                              WGC3Dsizei width,
+                              WGC3Dsizei height,
+                              WGC3Dint border);
+  virtual void copyTexSubImage2D(WGC3Denum target,
+                                 WGC3Dint level,
+                                 WGC3Dint xoffset,
+                                 WGC3Dint yoffset,
+                                 WGC3Dint x,
+                                 WGC3Dint y,
+                                 WGC3Dsizei width,
+                                 WGC3Dsizei height);
+  virtual void cullFace(WGC3Denum mode);
+  virtual void depthFunc(WGC3Denum func);
+  virtual void depthMask(WGC3Dboolean flag);
+  virtual void depthRange(WGC3Dclampf zNear, WGC3Dclampf zFar);
+  virtual void detachShader(WebGLId program, WebGLId shader);
+  virtual void disable(WGC3Denum cap);
+  virtual void disableVertexAttribArray(WGC3Duint index);
+  virtual void drawArrays(WGC3Denum mode, WGC3Dint first, WGC3Dsizei count);
+  virtual void drawElements(WGC3Denum mode,
+                            WGC3Dsizei count,
+                            WGC3Denum type,
+                            WGC3Dintptr offset);
+
+  virtual void enable(WGC3Denum cap);
+  virtual void enableVertexAttribArray(WGC3Duint index);
+  virtual void finish();
+  virtual void flush();
+  virtual void framebufferRenderbuffer(WGC3Denum target,
+                                       WGC3Denum attachment,
+                                       WGC3Denum renderbuffertarget,
+                                       WebGLId renderbuffer);
+  virtual void framebufferTexture2D(WGC3Denum target,
+                                    WGC3Denum attachment,
+                                    WGC3Denum textarget,
+                                    WebGLId texture,
+                                    WGC3Dint level);
+  virtual void frontFace(WGC3Denum mode);
+  virtual void generateMipmap(WGC3Denum target);
+
+  virtual bool getActiveAttrib(WebGLId program,
+                               WGC3Duint index,
+                               ActiveInfo&);
+  virtual bool getActiveUniform(WebGLId program,
+                                WGC3Duint index,
+                                ActiveInfo&);
+
+  virtual void getAttachedShaders(WebGLId program,
+                                  WGC3Dsizei maxCount,
+                                  WGC3Dsizei* count,
+                                  WebGLId* shaders);
+
+  virtual WGC3Dint  getAttribLocation(WebGLId program, const WGC3Dchar* name);
+
+  virtual void getBooleanv(WGC3Denum pname, WGC3Dboolean* value);
+
+  virtual void getBufferParameteriv(WGC3Denum target,
+                                    WGC3Denum pname,
+                                    WGC3Dint* value);
+
+  virtual Attributes getContextAttributes();
+
+  virtual WGC3Denum getError();
+
+  virtual bool isContextLost();
+
+  virtual void getFloatv(WGC3Denum pname, WGC3Dfloat* value);
+
+  virtual void getFramebufferAttachmentParameteriv(WGC3Denum target,
+                                                   WGC3Denum attachment,
+                                                   WGC3Denum pname,
+                                                   WGC3Dint* value);
+
+  virtual void getIntegerv(WGC3Denum pname, WGC3Dint* value);
+
+  virtual void getProgramiv(WebGLId program, WGC3Denum pname, WGC3Dint* value);
+
+  virtual WebKit::WebString getProgramInfoLog(WebGLId program);
+
+  virtual void getRenderbufferParameteriv(WGC3Denum target,
+                                          WGC3Denum pname,
+                                          WGC3Dint* value);
+
+  virtual void getShaderiv(WebGLId shader, WGC3Denum pname, WGC3Dint* value);
+
+  virtual WebKit::WebString getShaderInfoLog(WebGLId shader);
+
+  // TBD
+  // void glGetShaderPrecisionFormat (GLenum shadertype,
+  //                                  GLenum precisiontype,
+  //                                  GLint* range,
+  //                                  GLint* precision);
+
+  virtual WebKit::WebString getShaderSource(WebGLId shader);
+  virtual WebKit::WebString getString(WGC3Denum name);
+
+  virtual void getTexParameterfv(WGC3Denum target,
+                                 WGC3Denum pname,
+                                 WGC3Dfloat* value);
+  virtual void getTexParameteriv(WGC3Denum target,
+                                 WGC3Denum pname,
+                                 WGC3Dint* value);
+
+  virtual void getUniformfv(WebGLId program,
+                            WGC3Dint location,
+                            WGC3Dfloat* value);
+  virtual void getUniformiv(WebGLId program,
+                            WGC3Dint location,
+                            WGC3Dint* value);
+
+  virtual WGC3Dint getUniformLocation(WebGLId program, const WGC3Dchar* name);
+
+  virtual void getVertexAttribfv(WGC3Duint index, WGC3Denum pname,
+                                 WGC3Dfloat* value);
+  virtual void getVertexAttribiv(WGC3Duint index, WGC3Denum pname,
+                                 WGC3Dint* value);
+
+  virtual WGC3Dsizeiptr getVertexAttribOffset(WGC3Duint index, WGC3Denum pname);
+
+  virtual void hint(WGC3Denum target, WGC3Denum mode);
+  virtual WGC3Dboolean isBuffer(WebGLId buffer);
+  virtual WGC3Dboolean isEnabled(WGC3Denum cap);
+  virtual WGC3Dboolean isFramebuffer(WebGLId framebuffer);
+  virtual WGC3Dboolean isProgram(WebGLId program);
+  virtual WGC3Dboolean isRenderbuffer(WebGLId renderbuffer);
+  virtual WGC3Dboolean isShader(WebGLId shader);
+  virtual WGC3Dboolean isTexture(WebGLId texture);
+  virtual void lineWidth(WGC3Dfloat);
+  virtual void linkProgram(WebGLId program);
+  virtual void pixelStorei(WGC3Denum pname, WGC3Dint param);
+  virtual void polygonOffset(WGC3Dfloat factor, WGC3Dfloat units);
+
+  virtual void readPixels(WGC3Dint x,
+                          WGC3Dint y,
+                          WGC3Dsizei width,
+                          WGC3Dsizei height,
+                          WGC3Denum format,
+                          WGC3Denum type,
+                          void* pixels);
+
+  virtual void releaseShaderCompiler();
+  virtual void renderbufferStorage(WGC3Denum target,
+                                   WGC3Denum internalformat,
+                                   WGC3Dsizei width,
+                                   WGC3Dsizei height);
+  virtual void sampleCoverage(WGC3Dfloat value, WGC3Dboolean invert);
+  virtual void scissor(WGC3Dint x, WGC3Dint y,
+                       WGC3Dsizei width, WGC3Dsizei height);
+  virtual void shaderSource(WebGLId shader, const WGC3Dchar* string);
+  virtual void stencilFunc(WGC3Denum func, WGC3Dint ref, WGC3Duint mask);
+  virtual void stencilFuncSeparate(WGC3Denum face,
+                                   WGC3Denum func,
+                                   WGC3Dint ref,
+                                   WGC3Duint mask);
+  virtual void stencilMask(WGC3Duint mask);
+  virtual void stencilMaskSeparate(WGC3Denum face, WGC3Duint mask);
+  virtual void stencilOp(WGC3Denum fail,
+                         WGC3Denum zfail,
+                         WGC3Denum zpass);
+  virtual void stencilOpSeparate(WGC3Denum face,
+                                 WGC3Denum fail,
+                                 WGC3Denum zfail,
+                                 WGC3Denum zpass);
+
+  virtual void texImage2D(WGC3Denum target,
+                          WGC3Dint level,
+                          WGC3Denum internalformat,
+                          WGC3Dsizei width,
+                          WGC3Dsizei height,
+                          WGC3Dint border,
+                          WGC3Denum format,
+                          WGC3Denum type,
+                          const void* pixels);
+
+  virtual void texParameterf(WGC3Denum target,
+                             WGC3Denum pname,
+                             WGC3Dfloat param);
+  virtual void texParameteri(WGC3Denum target,
+                             WGC3Denum pname,
+                             WGC3Dint param);
+
+  virtual void texSubImage2D(WGC3Denum target,
+                             WGC3Dint level,
+                             WGC3Dint xoffset,
+                             WGC3Dint yoffset,
+                             WGC3Dsizei width,
+                             WGC3Dsizei height,
+                             WGC3Denum format,
+                             WGC3Denum type,
+                             const void* pixels);
+
+  virtual void uniform1f(WGC3Dint location, WGC3Dfloat x);
+  virtual void uniform1fv(WGC3Dint location,
+                          WGC3Dsizei count, const WGC3Dfloat* v);
+  virtual void uniform1i(WGC3Dint location, WGC3Dint x);
+  virtual void uniform1iv(WGC3Dint location,
+                          WGC3Dsizei count, const WGC3Dint* v);
+  virtual void uniform2f(WGC3Dint location, WGC3Dfloat x, WGC3Dfloat y);
+  virtual void uniform2fv(WGC3Dint location,
+                          WGC3Dsizei count, const WGC3Dfloat* v);
+  virtual void uniform2i(WGC3Dint location, WGC3Dint x, WGC3Dint y);
+  virtual void uniform2iv(WGC3Dint location,
+                          WGC3Dsizei count, const WGC3Dint* v);
+  virtual void uniform3f(WGC3Dint location,
+                         WGC3Dfloat x, WGC3Dfloat y, WGC3Dfloat z);
+  virtual void uniform3fv(WGC3Dint location,
+                          WGC3Dsizei count, const WGC3Dfloat* v);
+  virtual void uniform3i(WGC3Dint location,
+                         WGC3Dint x, WGC3Dint y, WGC3Dint z);
+  virtual void uniform3iv(WGC3Dint location,
+                          WGC3Dsizei count, const WGC3Dint* v);
+  virtual void uniform4f(WGC3Dint location,
+                         WGC3Dfloat x, WGC3Dfloat y,
+                         WGC3Dfloat z, WGC3Dfloat w);
+  virtual void uniform4fv(WGC3Dint location,
+                          WGC3Dsizei count, const WGC3Dfloat* v);
+  virtual void uniform4i(WGC3Dint location,
+                         WGC3Dint x, WGC3Dint y, WGC3Dint z, WGC3Dint w);
+  virtual void uniform4iv(WGC3Dint location,
+                          WGC3Dsizei count, const WGC3Dint* v);
+  virtual void uniformMatrix2fv(WGC3Dint location,
+                                WGC3Dsizei count,
+                                WGC3Dboolean transpose,
+                                const WGC3Dfloat* value);
+  virtual void uniformMatrix3fv(WGC3Dint location,
+                                WGC3Dsizei count,
+                                WGC3Dboolean transpose,
+                                const WGC3Dfloat* value);
+  virtual void uniformMatrix4fv(WGC3Dint location,
+                                WGC3Dsizei count,
+                                WGC3Dboolean transpose,
+                                const WGC3Dfloat* value);
+
+  virtual void useProgram(WebGLId program);
+  virtual void validateProgram(WebGLId program);
+
+  virtual void vertexAttrib1f(WGC3Duint index, WGC3Dfloat x);
+  virtual void vertexAttrib1fv(WGC3Duint index, const WGC3Dfloat* values);
+  virtual void vertexAttrib2f(WGC3Duint index, WGC3Dfloat x, WGC3Dfloat y);
+  virtual void vertexAttrib2fv(WGC3Duint index, const WGC3Dfloat* values);
+  virtual void vertexAttrib3f(WGC3Duint index,
+                              WGC3Dfloat x, WGC3Dfloat y, WGC3Dfloat z);
+  virtual void vertexAttrib3fv(WGC3Duint index, const WGC3Dfloat* values);
+  virtual void vertexAttrib4f(WGC3Duint index,
+                              WGC3Dfloat x, WGC3Dfloat y,
+                              WGC3Dfloat z, WGC3Dfloat w);
+  virtual void vertexAttrib4fv(WGC3Duint index, const WGC3Dfloat* values);
+  virtual void vertexAttribPointer(WGC3Duint index,
+                                   WGC3Dint size,
+                                   WGC3Denum type,
+                                   WGC3Dboolean normalized,
+                                   WGC3Dsizei stride,
+                                   WGC3Dintptr offset);
+
+  virtual void viewport(WGC3Dint x, WGC3Dint y,
+                        WGC3Dsizei width, WGC3Dsizei height);
+
+  // Support for buffer creation and deletion
+  virtual WebGLId createBuffer();
+  virtual WebGLId createFramebuffer();
+  virtual WebGLId createProgram();
+  virtual WebGLId createRenderbuffer();
+  virtual WebGLId createShader(WGC3Denum);
+  virtual WebGLId createTexture();
+
+  virtual void deleteBuffer(WebGLId);
+  virtual void deleteFramebuffer(WebGLId);
+  virtual void deleteProgram(WebGLId);
+  virtual void deleteRenderbuffer(WebGLId);
+  virtual void deleteShader(WebGLId);
+  virtual void deleteTexture(WebGLId);
+
+  virtual void synthesizeGLError(WGC3Denum);
+
+  virtual void* mapBufferSubDataCHROMIUM(
+      WGC3Denum target, WGC3Dintptr offset,
+      WGC3Dsizeiptr size, WGC3Denum access);
+  virtual void unmapBufferSubDataCHROMIUM(const void*);
+  virtual void* mapTexSubImage2DCHROMIUM(
+      WGC3Denum target,
+      WGC3Dint level,
+      WGC3Dint xoffset,
+      WGC3Dint yoffset,
+      WGC3Dsizei width,
+      WGC3Dsizei height,
+      WGC3Denum format,
+      WGC3Denum type,
+      WGC3Denum access);
+  virtual void unmapTexSubImage2DCHROMIUM(const void*);
+
+  virtual void copyTextureToParentTextureCHROMIUM(
+      WebGLId texture, WebGLId parentTexture);
+
+  virtual WebKit::WebString getRequestableExtensionsCHROMIUM();
+  virtual void requestExtensionCHROMIUM(const char*);
+
+  virtual void blitFramebufferCHROMIUM(
+      WGC3Dint srcX0, WGC3Dint srcY0, WGC3Dint srcX1, WGC3Dint srcY1,
+      WGC3Dint dstX0, WGC3Dint dstY0, WGC3Dint dstX1, WGC3Dint dstY1,
+      WGC3Dbitfield mask, WGC3Denum filter);
+  virtual void renderbufferStorageMultisampleCHROMIUM(
+      WGC3Denum target, WGC3Dsizei samples, WGC3Denum internalformat,
+      WGC3Dsizei width, WGC3Dsizei height);
+
+  virtual WebGLId createCompositorTexture(WGC3Dsizei width, WGC3Dsizei height);
+  virtual void deleteCompositorTexture(WebGLId parent_texture);
+  virtual void copyTextureToCompositor(WebGLId texture,
+                                       WebGLId parent_texture);
+
+  ggl::Context* context() { return context_; }
+
+ private:
+  // SwapBuffers callback;
+  void OnSwapBuffers();
+
+  // The GGL context we use for OpenGL rendering.
+  ggl::Context* context_;
+  // If rendering directly to WebView, weak pointer to it.
+  WebKit::WebView* web_view_;
+
+  WebKit::WebGraphicsContext3D::Attributes attributes_;
+  int cached_width_, cached_height_;
+
+  // For tracking which FBO is bound.
+  WebGLId bound_fbo_;
+
+  // Errors raised by synthesizeGLError().
+  std::vector<WGC3Denum> synthetic_errors_;
+
+#ifdef FLIP_FRAMEBUFFER_VERTICALLY
+  scoped_ptr<uint8> scanline_;
+  void FlipVertically(uint8* framebuffer,
+                      unsigned int width,
+                      unsigned int height);
+#endif
+};
+
+#else  // USE_WGC3D_TYPES
+
+class WebGraphicsContext3DCommandBufferImpl
+    : public WebKit::WebGraphicsContext3D {
+ public:
+
+  WebGraphicsContext3DCommandBufferImpl();
+  virtual ~WebGraphicsContext3DCommandBufferImpl();
+
+  //----------------------------------------------------------------------
+  // WebGraphicsContext3D methods
+  virtual bool initialize(WebGraphicsContext3D::Attributes attributes,
+                          WebKit::WebView*,
+                          bool renderDirectlyToWebView);
+
+  virtual bool makeContextCurrent();
+
+  virtual int width();
+  virtual int height();
+
   virtual int sizeInBytes(int type);
 
   virtual bool isGLES2Compliant();
@@ -405,6 +824,8 @@
 #endif
 };
 
+#endif  // USE_WGC3D_TYPES
+
 #endif  // defined(ENABLE_GPU)
 #endif  // CHROME_RENDERER_WEBGRAPHICSCONTEXT3D_COMMAND_BUFFER_IMPL_H_