Revert "Moved GL enums from GraphicsContext3D to a more generic location."

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
@@ skipping 69 matching lines @@
     }
 
     GC3Dsizei WebGLRenderbufferAttachment::height() const
     {
         return m_renderbuffer->height();
     }
 
     GC3Denum WebGLRenderbufferAttachment::format() const
     {
         GC3Denum format = m_renderbuffer->internalFormat();
-        if (format == GL_DEPTH_STENCIL_OES
+        if (format == GraphicsContext3D::DEPTH_STENCIL
             && m_renderbuffer->emulatedStencilBuffer()
-            && m_renderbuffer->emulatedStencilBuffer()->internalFormat() != GL_STENCIL_INDEX8) {
+            && m_renderbuffer->emulatedStencilBuffer()->internalFormat() != GraphicsContext3D::STENCIL_INDEX8) {
             return 0;
         }
         return format;
     }
 
     WebGLSharedObject* WebGLRenderbufferAttachment::object() const
     {
         return m_renderbuffer->object() ? m_renderbuffer.get() : 0;
     }
 
@@ skipping 19 matching lines @@
     }
 
     void WebGLRenderbufferAttachment::onDetached(GraphicsContext3D* context)
     {
         m_renderbuffer->onDetached(context);
     }
 
     void WebGLRenderbufferAttachment::attach(GraphicsContext3D* context, GC3Denum attachment)
     {
         Platform3DObject object = objectOrZero(m_renderbuffer.get());
-        if (attachment == GC3D_DEPTH_STENCIL_ATTACHMENT_WEBGL && m_renderbuffer->emulatedStencilBuffer()) {
-            context->framebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, object);
-            context->framebufferRenderbuffer(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER, objectOrZero(m_renderbuffer->emulatedStencilBuffer()));
+        if (attachment == GraphicsContext3D::DEPTH_STENCIL_ATTACHMENT && m_renderbuffer->emulatedStencilBuffer()) {
+            context->framebufferRenderbuffer(GraphicsContext3D::FRAMEBUFFER, GraphicsContext3D::DEPTH_ATTACHMENT, GraphicsContext3D::RENDERBUFFER, object);
+            context->framebufferRenderbuffer(GraphicsContext3D::FRAMEBUFFER, GraphicsContext3D::STENCIL_ATTACHMENT, GraphicsContext3D::RENDERBUFFER, objectOrZero(m_renderbuffer->emulatedStencilBuffer()));
         } else {
-            context->framebufferRenderbuffer(GL_FRAMEBUFFER, attachment, GL_RENDERBUFFER, object);
+            context->framebufferRenderbuffer(GraphicsContext3D::FRAMEBUFFER, attachment, GraphicsContext3D::RENDERBUFFER, object);
         }
     }
 
     void WebGLRenderbufferAttachment::unattach(GraphicsContext3D* context, GC3Denum attachment)
     {
-        if (attachment == GC3D_DEPTH_STENCIL_ATTACHMENT_WEBGL) {
-            context->framebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, 0);
-            context->framebufferRenderbuffer(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER, 0);
-        } else {
-            context->framebufferRenderbuffer(GL_FRAMEBUFFER, attachment, GL_RENDERBUFFER, 0);
-        }
+        if (attachment == GraphicsContext3D::DEPTH_STENCIL_ATTACHMENT) {
+            context->framebufferRenderbuffer(GraphicsContext3D::FRAMEBUFFER, GraphicsContext3D::DEPTH_ATTACHMENT, GraphicsContext3D::RENDERBUFFER, 0);
+            context->framebufferRenderbuffer(GraphicsContext3D::FRAMEBUFFER, GraphicsContext3D::STENCIL_ATTACHMENT, GraphicsContext3D::RENDERBUFFER, 0);
+        } else
+            context->framebufferRenderbuffer(GraphicsContext3D::FRAMEBUFFER, attachment, GraphicsContext3D::RENDERBUFFER, 0);
     }
 
     GC3Denum WebGLRenderbufferAttachment::type() const
     {
         notImplemented();
         return 0;
     }
 
     class WebGLTextureAttachment : public WebGLFramebuffer::WebGLAttachment {
     public:
@@ skipping 75 matching lines @@
     }
 
     void WebGLTextureAttachment::onDetached(GraphicsContext3D* context)
     {
         m_texture->onDetached(context);
     }
 
     void WebGLTextureAttachment::attach(GraphicsContext3D* context, GC3Denum attachment)
     {
         Platform3DObject object = objectOrZero(m_texture.get());
-        context->framebufferTexture2D(GL_FRAMEBUFFER, attachment, m_target, object, m_level);
+        context->framebufferTexture2D(GraphicsContext3D::FRAMEBUFFER, attachment, m_target, object, m_level);
     }
 
     void WebGLTextureAttachment::unattach(GraphicsContext3D* context, GC3Denum attachment)
     {
-        if (attachment == GC3D_DEPTH_STENCIL_ATTACHMENT_WEBGL) {
-            context->framebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, m_target, 0, m_level);
-            context->framebufferTexture2D(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, m_target, 0, m_level);
-        } else {
-            context->framebufferTexture2D(GL_FRAMEBUFFER, attachment, m_target, 0, m_level);
-        }
+        if (attachment == GraphicsContext3D::DEPTH_STENCIL_ATTACHMENT) {
+            context->framebufferTexture2D(GraphicsContext3D::FRAMEBUFFER, GraphicsContext3D::DEPTH_ATTACHMENT, m_target, 0, m_level);
+            context->framebufferTexture2D(GraphicsContext3D::FRAMEBUFFER, GraphicsContext3D::STENCIL_ATTACHMENT, m_target, 0, m_level);
+        } else
+            context->framebufferTexture2D(GraphicsContext3D::FRAMEBUFFER, attachment, m_target, 0, m_level);
     }
 
     GC3Denum WebGLTextureAttachment::type() const
     {
         return m_texture->getType(m_target, m_level);
     }
 
     bool isColorRenderable(GC3Denum internalformat)
     {
         switch (internalformat) {
-        case GL_RGBA4:
-        case GL_RGB5_A1:
-        case GL_RGB565:
+        case GraphicsContext3D::RGBA4:
+        case GraphicsContext3D::RGB5_A1:
+        case GraphicsContext3D::RGB565:
             return true;
         default:
             return false;
         }
     }
 
 } // anonymous namespace
 
 WebGLFramebuffer::WebGLAttachment::WebGLAttachment()
 {
@@ skipping 65 matching lines @@
 
 bool WebGLFramebuffer::isAttachmentComplete(WebGLAttachment* attachedObject, GC3Denum attachment, const char** reason) const
 {
     ASSERT(attachedObject && attachedObject->valid());
     ASSERT(reason);
 
     GC3Denum internalformat = attachedObject->format();
     WebGLSharedObject* object = attachedObject->object();
     ASSERT(object && (object->isTexture() || object->isRenderbuffer()));
 
-    if (attachment == GL_DEPTH_ATTACHMENT) {
+    if (attachment == GraphicsContext3D::DEPTH_ATTACHMENT) {
         if (object->isRenderbuffer()) {
-            if (internalformat != GL_DEPTH_COMPONENT16) {
+            if (internalformat != GraphicsContext3D::DEPTH_COMPONENT16) {
                 *reason = "the internalformat of the attached renderbuffer is not DEPTH_COMPONENT16";
                 return false;
             }
         } else if (object->isTexture()) {
             GC3Denum type = attachedObject->type();
-            if (!(context()->m_webglDepthTexture && internalformat == GL_DEPTH_COMPONENT
-                && (type == GL_UNSIGNED_SHORT || type == GL_UNSIGNED_INT))) {
+            if (!(context()->m_webglDepthTexture && internalformat == GraphicsContext3D::DEPTH_COMPONENT
+                && (type == GraphicsContext3D::UNSIGNED_SHORT || type == GraphicsContext3D::UNSIGNED_INT))) {
                 *reason = "the attached texture is not a depth texture";
                 return false;
             }
         }
-    } else if (attachment == GL_STENCIL_ATTACHMENT) {
+    } else if (attachment == GraphicsContext3D::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) {
+            if (internalformat != GraphicsContext3D::STENCIL_INDEX8) {
                 *reason = "the internalformat of the attached renderbuffer is not STENCIL_INDEX8";
                 return false;
             }
         }
-    } else if (attachment == GC3D_DEPTH_STENCIL_ATTACHMENT_WEBGL) {
+    } else if (attachment == GraphicsContext3D::DEPTH_STENCIL_ATTACHMENT) {
         if (object->isRenderbuffer()) {
-            if (internalformat != GL_DEPTH_STENCIL_OES) {
+            if (internalformat != GraphicsContext3D::DEPTH_STENCIL) {
                 *reason = "the internalformat of the attached renderbuffer is not DEPTH_STENCIL";
                 return false;
             }
         } else if (object->isTexture()) {
             GC3Denum type = attachedObject->type();
-            if (!(context()->m_webglDepthTexture && internalformat == GL_DEPTH_STENCIL_OES
-                && type == GL_UNSIGNED_INT_24_8_OES)) {
+            if (!(context()->m_webglDepthTexture && internalformat == GraphicsContext3D::DEPTH_STENCIL
+                && type == GraphicsContext3D::UNSIGNED_INT_24_8)) {
                 *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
-            && attachment < static_cast<GC3Denum>(GL_COLOR_ATTACHMENT0 + context()->maxColorAttachments()))) {
+    } else if (attachment == GraphicsContext3D::COLOR_ATTACHMENT0
+        || (context()->m_webglDrawBuffers && attachment > GraphicsContext3D::COLOR_ATTACHMENT0
+            && attachment < static_cast<GC3Denum>(GraphicsContext3D::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()) {
             GC3Denum type = attachedObject->type();
-            if (internalformat != GL_RGBA && internalformat != GL_RGB) {
+            if (internalformat != GraphicsContext3D::RGBA && internalformat != GraphicsContext3D::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)) {
+            if (type != GraphicsContext3D::UNSIGNED_BYTE
+                && type != GraphicsContext3D::UNSIGNED_SHORT_5_6_5
+                && type != GraphicsContext3D::UNSIGNED_SHORT_4_4_4_4
+                && type != GraphicsContext3D::UNSIGNED_SHORT_5_5_5_1
+                && !(type == GraphicsContext3D::FLOAT && context()->m_oesTextureFloat)
+                && !(type == GraphicsContext3D::HALF_FLOAT_OES && context()->m_oesTextureHalfFloat)) {
                 *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 14 matching lines @@
     ASSERT(isBound());
     if (!object())
         return;
 
     WebGLAttachment* attachmentObject = getAttachment(attachment);
     if (attachmentObject) {
         attachmentObject->onDetached(context()->graphicsContext3D());
         m_attachments.remove(attachment);
         drawBuffersIfNecessary(false);
         switch (attachment) {
-        case GC3D_DEPTH_STENCIL_ATTACHMENT_WEBGL:
-            attach(GL_DEPTH_ATTACHMENT, GL_DEPTH_ATTACHMENT);
-            attach(GL_STENCIL_ATTACHMENT, GL_STENCIL_ATTACHMENT);
+        case GraphicsContext3D::DEPTH_STENCIL_ATTACHMENT:
+            attach(GraphicsContext3D::DEPTH_ATTACHMENT, GraphicsContext3D::DEPTH_ATTACHMENT);
+            attach(GraphicsContext3D::STENCIL_ATTACHMENT, GraphicsContext3D::STENCIL_ATTACHMENT);
             break;
-        case GL_DEPTH_ATTACHMENT:
-            attach(GC3D_DEPTH_STENCIL_ATTACHMENT_WEBGL, GL_DEPTH_ATTACHMENT);
+        case GraphicsContext3D::DEPTH_ATTACHMENT:
+            attach(GraphicsContext3D::DEPTH_STENCIL_ATTACHMENT, GraphicsContext3D::DEPTH_ATTACHMENT);
             break;
-        case GL_STENCIL_ATTACHMENT:
-            attach(GC3D_DEPTH_STENCIL_ATTACHMENT_WEBGL, GL_STENCIL_ATTACHMENT);
+        case GraphicsContext3D::STENCIL_ATTACHMENT:
+            attach(GraphicsContext3D::DEPTH_STENCIL_ATTACHMENT, GraphicsContext3D::STENCIL_ATTACHMENT);
             break;
         }
     }
 }
 
 void WebGLFramebuffer::removeAttachmentFromBoundFramebuffer(WebGLSharedObject* attachment)
 {
     ASSERT(isBound());
     if (!object())
         return;
@@ skipping 13 matching lines @@
                 break;
             }
         }
     }
 }
 
 GC3Dsizei WebGLFramebuffer::colorBufferWidth() const
 {
     if (!object())
         return 0;
-    WebGLAttachment* attachment = getAttachment(GL_COLOR_ATTACHMENT0);
+    WebGLAttachment* attachment = getAttachment(GraphicsContext3D::COLOR_ATTACHMENT0);
     if (!attachment)
         return 0;
 
     return attachment->width();
 }
 
 GC3Dsizei WebGLFramebuffer::colorBufferHeight() const
 {
     if (!object())
         return 0;
-    WebGLAttachment* attachment = getAttachment(GL_COLOR_ATTACHMENT0);
+    WebGLAttachment* attachment = getAttachment(GraphicsContext3D::COLOR_ATTACHMENT0);
     if (!attachment)
         return 0;
 
     return attachment->height();
 }
 
 GC3Denum WebGLFramebuffer::colorBufferFormat() const
 {
     if (!object())
         return 0;
-    WebGLAttachment* attachment = getAttachment(GL_COLOR_ATTACHMENT0);
+    WebGLAttachment* attachment = getAttachment(GraphicsContext3D::COLOR_ATTACHMENT0);
     if (!attachment)
         return 0;
     return attachment->format();
 }
 
 GC3Denum WebGLFramebuffer::checkStatus(const char** reason) const
 {
     unsigned int count = 0;
     GC3Dsizei width = 0, height = 0;
     bool haveDepth = false;
     bool haveStencil = false;
     bool haveDepthStencil = false;
     for (AttachmentMap::const_iterator it = m_attachments.begin(); it != m_attachments.end(); ++it) {
         WebGLAttachment* attachment = it->value.get();
         if (!isAttachmentComplete(attachment, it->key, reason))
-            return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT;
+            return GraphicsContext3D::FRAMEBUFFER_INCOMPLETE_ATTACHMENT;
         if (!attachment->valid()) {
             *reason = "attachment is not valid";
-            return GL_FRAMEBUFFER_UNSUPPORTED;
+            return GraphicsContext3D::FRAMEBUFFER_UNSUPPORTED;
         }
         if (!attachment->format()) {
             *reason = "attachment is an unsupported format";
-            return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT;
+            return GraphicsContext3D::FRAMEBUFFER_INCOMPLETE_ATTACHMENT;
         }
         switch (it->key) {
-        case GL_DEPTH_ATTACHMENT:
+        case GraphicsContext3D::DEPTH_ATTACHMENT:
             haveDepth = true;
             break;
-        case GL_STENCIL_ATTACHMENT:
+        case GraphicsContext3D::STENCIL_ATTACHMENT:
             haveStencil = true;
             break;
-        case GC3D_DEPTH_STENCIL_ATTACHMENT_WEBGL:
+        case GraphicsContext3D::DEPTH_STENCIL_ATTACHMENT:
             haveDepthStencil = true;
             break;
         }
         if (!count) {
             width = attachment->width();
             height = attachment->height();
         } else {
             if (width != attachment->width() || height != attachment->height()) {
                 *reason = "attachments do not have the same dimensions";
-                return GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS;
+                return GraphicsContext3D::FRAMEBUFFER_INCOMPLETE_DIMENSIONS;
             }
         }
         ++count;
     }
     if (!count) {
         *reason = "no attachments";
-        return GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT;
+        return GraphicsContext3D::FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT;
     }
     if (!width || !height) {
         *reason = "framebuffer has a 0 dimension";
-        return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT;
+        return GraphicsContext3D::FRAMEBUFFER_INCOMPLETE_ATTACHMENT;
     }
     // WebGL specific: no conflicting DEPTH/STENCIL/DEPTH_STENCIL attachments.
     if ((haveDepthStencil && (haveDepth || haveStencil)) || (haveDepth && haveStencil)) {
         *reason = "conflicting DEPTH/STENCIL/DEPTH_STENCIL attachments";
-        return GL_FRAMEBUFFER_UNSUPPORTED;
+        return GraphicsContext3D::FRAMEBUFFER_UNSUPPORTED;
     }
-    return GL_FRAMEBUFFER_COMPLETE;
+    return GraphicsContext3D::FRAMEBUFFER_COMPLETE;
 }
 
 bool WebGLFramebuffer::onAccess(GraphicsContext3D* context3d, const char** reason)
 {
-    if (checkStatus(reason) != GL_FRAMEBUFFER_COMPLETE)
+    if (checkStatus(reason) != GraphicsContext3D::FRAMEBUFFER_COMPLETE)
         return false;
     return true;
 }
 
 bool WebGLFramebuffer::hasStencilBuffer() const
 {
-    WebGLAttachment* attachment = getAttachment(GL_STENCIL_ATTACHMENT);
+    WebGLAttachment* attachment = getAttachment(GraphicsContext3D::STENCIL_ATTACHMENT);
     if (!attachment)
-        attachment = getAttachment(GC3D_DEPTH_STENCIL_ATTACHMENT_WEBGL);
+        attachment = getAttachment(GraphicsContext3D::DEPTH_STENCIL_ATTACHMENT);
     return attachment && attachment->valid();
 }
 
 void WebGLFramebuffer::deleteObjectImpl(GraphicsContext3D* context3d, Platform3DObject object)
 {
     for (AttachmentMap::iterator it = m_attachments.begin(); it != m_attachments.end(); ++it)
         it->value->onDetached(context3d);
 
     context3d->deleteFramebuffer(object);
 }
 
 bool WebGLFramebuffer::isBound() const
 {
     return (context()->m_framebufferBinding.get() == this);
 }
 
 void WebGLFramebuffer::drawBuffers(const Vector<GC3Denum>& bufs)
 {
     m_drawBuffers = bufs;
     m_filteredDrawBuffers.resize(m_drawBuffers.size());
     for (size_t i = 0; i < m_filteredDrawBuffers.size(); ++i)
-        m_filteredDrawBuffers[i] = GL_NONE;
+        m_filteredDrawBuffers[i] = GraphicsContext3D::NONE;
     drawBuffersIfNecessary(true);
 }
 
 void WebGLFramebuffer::drawBuffersIfNecessary(bool force)
 {
     if (!context()->m_webglDrawBuffers)
         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_drawBuffers[i] != GraphicsContext3D::NONE && getAttachment(m_drawBuffers[i])) {
             if (m_filteredDrawBuffers[i] != m_drawBuffers[i]) {
                 m_filteredDrawBuffers[i] = m_drawBuffers[i];
                 reset = true;
             }
         } else {
-            if (m_filteredDrawBuffers[i] != GL_NONE) {
-                m_filteredDrawBuffers[i] = GL_NONE;
+            if (m_filteredDrawBuffers[i] != GraphicsContext3D::NONE) {
+                m_filteredDrawBuffers[i] = GraphicsContext3D::NONE;
                 reset = true;
             }
         }
     }
     if (reset) {
         context()->graphicsContext3D()->extensions()->drawBuffersEXT(
             m_filteredDrawBuffers.size(), m_filteredDrawBuffers.data());
     }
 }
 
 GC3Denum WebGLFramebuffer::getDrawBuffer(GC3Denum drawBuffer)
 {
     int index = static_cast<int>(drawBuffer - Extensions3D::DRAW_BUFFER0_EXT);
     ASSERT(index >= 0);
     if (index < static_cast<int>(m_drawBuffers.size()))
         return m_drawBuffers[index];
     if (drawBuffer == Extensions3D::DRAW_BUFFER0_EXT)
-        return GL_COLOR_ATTACHMENT0;
-    return GL_NONE;
+        return GraphicsContext3D::COLOR_ATTACHMENT0;
+    return GraphicsContext3D::NONE;
 }
 
 }