Moved the majority of WebGL functionality into WebGLRenderingContextBase

Source/core/html/canvas/WebGLFramebuffer.cpp

 /*
  * Copyright (C) 2009 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
 
 #include "core/html/canvas/WebGLFramebuffer.h"
 
-#include "core/html/canvas/WebGLRenderingContext.h"
+#include "core/html/canvas/WebGLRenderingContextBase.h"
 #include "platform/NotImplemented.h"
 
 namespace WebCore {
 
 namespace {
 
     Platform3DObject objectOrZero(WebGLObject* object)
     {
         return object ? object->object() : 0;
     }
@@ skipping 205 matching lines @@
 } // anonymous namespace
 
 WebGLFramebuffer::WebGLAttachment::WebGLAttachment()
 {
 }
 
 WebGLFramebuffer::WebGLAttachment::~WebGLAttachment()
 {
 }
 
-PassRefPtr<WebGLFramebuffer> WebGLFramebuffer::create(WebGLRenderingContext* ctx)
+PassRefPtr<WebGLFramebuffer> WebGLFramebuffer::create(WebGLRenderingContextBase* ctx)
 {
     return adoptRef(new WebGLFramebuffer(ctx));
 }
 
-WebGLFramebuffer::WebGLFramebuffer(WebGLRenderingContext* ctx)
+WebGLFramebuffer::WebGLFramebuffer(WebGLRenderingContextBase* ctx)
     : WebGLContextObject(ctx)
     , m_hasEverBeenBound(false)
 {
     ScriptWrappable::init(this);
     setObject(ctx->webGraphicsContext3D()->createFramebuffer());
 }
 
 WebGLFramebuffer::~WebGLFramebuffer()
 {
     deleteObject(0);
@@ skipping 51 matching lines @@
     ASSERT(object && (object->isTexture() || object->isRenderbuffer()));
 
     if (attachment == GL_DEPTH_ATTACHMENT) {
         if (object->isRenderbuffer()) {
             if (internalformat != GL_DEPTH_COMPONENT16) {
                 *reason = "the internalformat of the attached renderbuffer is not DEPTH_COMPONENT16";
                 return false;
             }
         } else if (object->isTexture()) {
             GLenum type = attachedObject->type();
-            if (!(context()->m_webglDepthTexture && internalformat == GL_DEPTH_COMPONENT
+            if (!(context()->extensionEnabled(WebGLDepthTextureName) && internalformat == GL_DEPTH_COMPONENT
                 && (type == GL_UNSIGNED_SHORT || type == GL_UNSIGNED_INT))) {
                 *reason = "the attached texture is not a depth texture";
                 return false;
             }
         }
     } else if (attachment == GL_STENCIL_ATTACHMENT) {
         // Depend on the underlying GL drivers to check stencil textures
         // and check renderbuffer type here only.
         if (object->isRenderbuffer()) {
             if (internalformat != GL_STENCIL_INDEX8) {
                 *reason = "the internalformat of the attached renderbuffer is not STENCIL_INDEX8";
                 return false;
             }
         }
     } else if (attachment == GC3D_DEPTH_STENCIL_ATTACHMENT_WEBGL) {
         if (object->isRenderbuffer()) {
             if (internalformat != GL_DEPTH_STENCIL_OES) {
                 *reason = "the internalformat of the attached renderbuffer is not DEPTH_STENCIL";
                 return false;
             }
         } else if (object->isTexture()) {
             GLenum type = attachedObject->type();
-            if (!(context()->m_webglDepthTexture && internalformat == GL_DEPTH_STENCIL_OES
+            if (!(context()->extensionEnabled(WebGLDepthTextureName) && internalformat == GL_DEPTH_STENCIL_OES
                 && type == GL_UNSIGNED_INT_24_8_OES)) {
                 *reason = "the attached texture is not a DEPTH_STENCIL texture";
                 return false;
             }
         }
     } else if (attachment == GL_COLOR_ATTACHMENT0
-        || (context()->m_webglDrawBuffers && attachment > GL_COLOR_ATTACHMENT0
+        || (context()->extensionEnabled(WebGLDrawBuffersName) && attachment > GL_COLOR_ATTACHMENT0
             && attachment < static_cast<GLenum>(GL_COLOR_ATTACHMENT0 + context()->maxColorAttachments()))) {
         if (object->isRenderbuffer()) {
             if (!isColorRenderable(internalformat)) {
                 *reason = "the internalformat of the attached renderbuffer is not color-renderable";
                 return false;
             }
         } else if (object->isTexture()) {
             GLenum type = attachedObject->type();
             if (internalformat != GL_RGBA && internalformat != GL_RGB) {
                 *reason = "the internalformat of the attached texture is not color-renderable";
                 return false;
             }
             // TODO: WEBGL_color_buffer_float and EXT_color_buffer_half_float extensions have not been implemented in
             // WebGL yet. It would be better to depend on the underlying GL drivers to check on rendering to floating point textures
             // and add the check back to WebGL when above two extensions are implemented.
             // Assume UNSIGNED_BYTE is renderable here without the need to explicitly check if GL_OES_rgb8_rgba8 extension is supported.
             if (type != GL_UNSIGNED_BYTE
                 && type != GL_UNSIGNED_SHORT_5_6_5
                 && type != GL_UNSIGNED_SHORT_4_4_4_4
                 && type != GL_UNSIGNED_SHORT_5_5_5_1
-                && !(type == GL_FLOAT && context()->m_oesTextureFloat)
-                && !(type == GL_HALF_FLOAT_OES && context()->m_oesTextureHalfFloat)) {
+                && !(type == GL_FLOAT && context()->extensionEnabled(OESTextureFloatName))
+                && !(type == GL_HALF_FLOAT_OES && context()->extensionEnabled(OESTextureHalfFloatName))) {
                 *reason = "unsupported type: The attached texture is not supported to be rendered to";
                 return false;
             }
         }
     } else {
         *reason = "unknown framebuffer attachment point";
         return false;
     }
 
     if (!attachedObject->width() || !attachedObject->height()) {
@@ skipping 180 matching lines @@
 {
     m_drawBuffers = bufs;
     m_filteredDrawBuffers.resize(m_drawBuffers.size());
     for (size_t i = 0; i < m_filteredDrawBuffers.size(); ++i)
         m_filteredDrawBuffers[i] = GL_NONE;
     drawBuffersIfNecessary(true);
 }
 
 void WebGLFramebuffer::drawBuffersIfNecessary(bool force)
 {
-    if (!context()->m_webglDrawBuffers)
+    if (!context()->extensionEnabled(WebGLDrawBuffersName))
         return;
     bool reset = force;
     // This filtering works around graphics driver bugs on Mac OS X.
     for (size_t i = 0; i < m_drawBuffers.size(); ++i) {
         if (m_drawBuffers[i] != GL_NONE && getAttachment(m_drawBuffers[i])) {
             if (m_filteredDrawBuffers[i] != m_drawBuffers[i]) {
                 m_filteredDrawBuffers[i] = m_drawBuffers[i];
                 reset = true;
             }
         } else {
@@ skipping 14 matching lines @@
     int index = static_cast<int>(drawBuffer - GL_DRAW_BUFFER0_EXT);
     ASSERT(index >= 0);
     if (index < static_cast<int>(m_drawBuffers.size()))
         return m_drawBuffers[index];
     if (drawBuffer == GL_DRAW_BUFFER0_EXT)
         return GL_COLOR_ATTACHMENT0;
     return GL_NONE;
 }
 
 }