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

webkit/gpu/webgraphicscontext3d_in_process_impl.h

Index: webkit/gpu/webgraphicscontext3d_in_process_impl.h
===================================================================
--- webkit/gpu/webgraphicscontext3d_in_process_impl.h	(revision 72809)
+++ webkit/gpu/webgraphicscontext3d_in_process_impl.h	(working copy)
@@ -21,6 +21,27 @@
 class GLContext;
 }
 
+#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;
+#endif
+
+using WebKit::WebGLId;
+
+using WebKit::WebString;
+using WebKit::WebView;
+
+using WebKit::WebGraphicsContext3D;
+
 namespace webkit {
 namespace gpu {
 
@@ -29,6 +50,438 @@
 // It is provided for support of test_shell and any Chromium ports
 // where an in-renderer WebGL implementation would be helpful.
 
+#if defined(USE_WGC3D_TYPES)
+
+class WebGraphicsContext3DInProcessImpl : public WebGraphicsContext3D {
+ public:
+  WebGraphicsContext3DInProcessImpl();
+  virtual ~WebGraphicsContext3DInProcessImpl();
+
+  //----------------------------------------------------------------------
+  // WebGraphicsContext3D methods
+  virtual bool initialize(
+      WebGraphicsContext3D::Attributes attributes, WebView*, bool);
+  virtual bool makeContextCurrent();
+
+  virtual int width();
+  virtual int height();
+
+  virtual bool isGLES2Compliant();
+
+  virtual void reshape(int width, int height);
+
+  virtual bool readBackFramebuffer(unsigned char* pixels, size_t bufferSize);
+
+  virtual WebGLId getPlatformTextureId();
+  virtual void prepareTexture();
+
+  virtual void synthesizeGLError(WGC3Denum error);
+  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 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 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 WebString getProgramInfoLog(WebGLId program);
+
+  virtual void getRenderbufferParameteriv(
+      WGC3Denum target, WGC3Denum pname, WGC3Dint* value);
+
+  virtual void getShaderiv(
+      WebGLId shader, WGC3Denum pname, WGC3Dint* value);
+
+  virtual WebString getShaderInfoLog(WebGLId shader);
+
+  // TBD
+  // void glGetShaderPrecisionFormat(
+  //     GLenum shadertype, GLenum precisiontype,
+  //     GLint* range, GLint* precision);
+
+  virtual WebString getShaderSource(WebGLId shader);
+  virtual 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 width);
+  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(WGC3Dclampf value, WGC3Dboolean invert);
+  virtual void scissor(
+      WGC3Dint x, WGC3Dint y, WGC3Dsizei width, WGC3Dsizei height);
+  virtual void shaderSource(WebGLId shader, const WGC3Dchar* source);
+  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);
+
+ private:
+  // ANGLE related.
+  struct ShaderSourceEntry {
+    explicit ShaderSourceEntry(WGC3Denum shader_type)
+        : type(shader_type),
+          is_valid(false) {
+    }
+
+    WGC3Denum type;
+    scoped_array<char> source;
+    scoped_array<char> log;
+    scoped_array<char> translated_source;
+    bool is_valid;
+  };
+
+  typedef base::hash_map<WebGLId, ShaderSourceEntry*> ShaderSourceMap;
+
+#ifdef FLIP_FRAMEBUFFER_VERTICALLY
+  void FlipVertically(unsigned char* framebuffer,
+                      unsigned int width,
+                      unsigned int height);
+#endif
+
+  // Take into account the user's requested context creation attributes, in
+  // particular stencil and antialias, and determine which could or could
+  // not be honored based on the capabilities of the OpenGL implementation.
+  void ValidateAttributes();
+
+  // Resolve the given rectangle of the multisampled framebuffer if necessary.
+  void ResolveMultisampledFramebuffer(
+      WGC3Dint x, WGC3Dint y, WGC3Dsizei width, WGC3Dsizei height);
+
+  bool AngleCreateCompilers();
+  void AngleDestroyCompilers();
+  bool AngleValidateShaderSource(ShaderSourceEntry* entry);
+
+  WebGraphicsContext3D::Attributes attributes_;
+  bool initialized_;
+  bool render_directly_to_web_view_;
+  bool is_gles2_;
+  bool have_ext_framebuffer_object_;
+  bool have_ext_framebuffer_multisample_;
+  bool have_angle_framebuffer_multisample_;
+
+  WebGLId texture_;
+  WebGLId fbo_;
+  WebGLId depth_stencil_buffer_;
+  int cached_width_, cached_height_;
+
+  // For multisampling
+  WebGLId multisample_fbo_;
+  WebGLId multisample_depth_stencil_buffer_;
+  WebGLId multisample_color_buffer_;
+
+  // For tracking which FBO is bound
+  WebGLId bound_fbo_;
+
+  // For tracking which texture is bound
+  WebGLId bound_texture_;
+
+  // FBO used for copying child texture to parent texture.
+  WebGLId copy_texture_to_parent_texture_fbo_;
+
+#ifdef FLIP_FRAMEBUFFER_VERTICALLY
+  unsigned char* scanline_;
+#endif
+
+  // Errors raised by synthesizeGLError().
+  std::list<WGC3Denum> synthetic_errors_list_;
+  std::set<WGC3Denum> synthetic_errors_set_;
+
+  scoped_ptr<gfx::GLContext> gl_context_;
+
+  ShaderSourceMap shader_source_map_;
+
+  ShHandle fragment_compiler_;
+  ShHandle vertex_compiler_;
+};
+
+#else  // USE_WGC3D_TYPES
+
 class WebGraphicsContext3DInProcessImpl : public WebKit::WebGraphicsContext3D {
  public:
   WebGraphicsContext3DInProcessImpl();
@@ -474,6 +927,8 @@
   ShHandle vertex_compiler_;
 };
 
+#endif  // USE_WGC3D_TYPES
+
 }  // namespace gpu
 }  // namespace webkit