Upstream version 5.34.104.0

[platform/framework/web/crosswalk.git] / src / third_party / WebKit / Source / platform / graphics / gpu / DrawingBuffer.cpp

diff --git a/src/third_party/WebKit/Source/platform/graphics/gpu/DrawingBuffer.cpp b/src/third_party/WebKit/Source/platform/graphics/gpu/DrawingBuffer.cpp
index 6dd6f76..a150361 100644 (file)
--- a/src/third_party/WebKit/Source/platform/graphics/gpu/DrawingBuffer.cpp
+++ b/src/third_party/WebKit/Source/platform/graphics/gpu/DrawingBuffer.cpp
@@ -35,6 +35,7 @@
 #include <algorithm>
 #include "platform/TraceEvent.h"
 #include "platform/graphics/GraphicsLayer.h"
+#include "platform/graphics/gpu/Extensions3DUtil.h"
 #include "public/platform/Platform.h"
 #include "public/platform/WebCompositorSupport.h"
 #include "public/platform/WebExternalBitmap.h"
@@ -78,29 +79,25 @@ private:
 
 PassRefPtr<DrawingBuffer> DrawingBuffer::create(blink::WebGraphicsContext3D* context, const IntSize& size, PreserveDrawingBuffer preserve, PassRefPtr<ContextEvictionManager> contextEvictionManager)
 {
-    RefPtr<GraphicsContext3D> contextSupport(GraphicsContext3D::createContextSupport(context));
-
-    bool multisampleSupported = contextSupport->supportsExtension("GL_ANGLE_framebuffer_blit")
-        && contextSupport->supportsExtension("GL_ANGLE_framebuffer_multisample")
-        && contextSupport->supportsExtension("GL_OES_rgb8_rgba8");
+    Extensions3DUtil extensionsUtil(context);
+    bool multisampleSupported = extensionsUtil.supportsExtension("GL_CHROMIUM_framebuffer_multisample")
+        && extensionsUtil.supportsExtension("GL_OES_rgb8_rgba8");
     if (multisampleSupported) {
-        contextSupport->ensureExtensionEnabled("GL_ANGLE_framebuffer_blit");
-        contextSupport->ensureExtensionEnabled("GL_ANGLE_framebuffer_multisample");
-        contextSupport->ensureExtensionEnabled("GL_OES_rgb8_rgba8");
+        extensionsUtil.ensureExtensionEnabled("GL_CHROMIUM_framebuffer_multisample");
+        extensionsUtil.ensureExtensionEnabled("GL_OES_rgb8_rgba8");
     }
 #if defined(OS_TIZEN) && CPU(X86)
     multisampleSupported = false;
 #endif
-    bool packedDepthStencilSupported = contextSupport->supportsExtension("GL_OES_packed_depth_stencil");
+    bool packedDepthStencilSupported = extensionsUtil.supportsExtension("GL_OES_packed_depth_stencil");
     if (packedDepthStencilSupported)
-        contextSupport->ensureExtensionEnabled("GL_OES_packed_depth_stencil");
+        extensionsUtil.ensureExtensionEnabled("GL_OES_packed_depth_stencil");
 
-    RefPtr<DrawingBuffer> drawingBuffer = adoptRef(new DrawingBuffer(context, contextSupport.get(), size, multisampleSupported, packedDepthStencilSupported, preserve, contextEvictionManager));
+    RefPtr<DrawingBuffer> drawingBuffer = adoptRef(new DrawingBuffer(context, size, multisampleSupported, packedDepthStencilSupported, preserve, contextEvictionManager));
     return drawingBuffer.release();
 }
 
 DrawingBuffer::DrawingBuffer(blink::WebGraphicsContext3D* context,
-    GraphicsContext3D* contextSupport,
     const IntSize& size,
     bool multisampleExtensionSupported,
     bool packedDepthStencilExtensionSupported,
@@ -112,7 +109,6 @@ DrawingBuffer::DrawingBuffer(blink::WebGraphicsContext3D* context,
     , m_framebufferBinding(0)
     , m_activeTextureUnit(GL_TEXTURE0)
     , m_context(context)
-    , m_contextSupport(contextSupport)
     , m_size(-1, -1)
     , m_multisampleExtensionSupported(multisampleExtensionSupported)
     , m_packedDepthStencilExtensionSupported(packedDepthStencilExtensionSupported)
@@ -182,7 +178,7 @@ bool DrawingBuffer::prepareMailbox(blink::WebExternalTextureMailbox* outMailbox,
 
         unsigned char* pixels = bitmap->pixels();
         bool needPremultiply = m_attributes.alpha && !m_attributes.premultipliedAlpha;
-        GraphicsContext3D::AlphaOp op = needPremultiply ? GraphicsContext3D::AlphaDoPremultiply : GraphicsContext3D::AlphaDoNothing;
+        WebGLImageConversion::AlphaOp op = needPremultiply ? WebGLImageConversion::AlphaDoPremultiply : WebGLImageConversion::AlphaDoNothing;
         if (pixels)
             readBackFramebuffer(pixels, size().width(), size().height(), ReadbackSkia, op);
     }
@@ -260,10 +256,8 @@ PassRefPtr<DrawingBuffer::MailboxInfo> DrawingBuffer::recycledMailbox()
         mailboxInfo->mailbox.syncPoint = 0;
     }
 
-    m_context->bindTexture(GL_TEXTURE_2D, mailboxInfo->textureId);
-    m_context->consumeTextureCHROMIUM(GL_TEXTURE_2D, mailboxInfo->mailbox.name);
-
     if (mailboxInfo->size != m_size) {
+        m_context->bindTexture(GL_TEXTURE_2D, mailboxInfo->textureId);
         texImage2DResourceSafe(GL_TEXTURE_2D, 0, m_internalColorFormat, m_size.width(), m_size.height(), 0, m_colorFormat, GL_UNSIGNED_BYTE);
         mailboxInfo->size = m_size;
     }
@@ -312,7 +306,7 @@ void DrawingBuffer::initialize(const IntSize& size)
     reset(size);
 }
 
-bool DrawingBuffer::copyToPlatformTexture(GraphicsContext3D& contextSupport, Platform3DObject texture, GLenum internalFormat, GLenum destType, GLint level, bool premultiplyAlpha, bool flipY)
+bool DrawingBuffer::copyToPlatformTexture(blink::WebGraphicsContext3D* context, Platform3DObject texture, GLenum internalFormat, GLenum destType, GLint level, bool premultiplyAlpha, bool flipY)
 {
     if (!m_context || !m_context->makeContextCurrent())
         return false;
@@ -328,12 +322,10 @@ bool DrawingBuffer::copyToPlatformTexture(GraphicsContext3D& contextSupport, Pla
     }
     Platform3DObject sourceTexture = m_colorBuffer;
 
-    blink::WebGraphicsContext3D* context = contextSupport.webContext();
-
     if (!context->makeContextCurrent())
         return false;
-    if (!contextSupport.supportsExtension("GL_CHROMIUM_copy_texture") || !contextSupport.supportsExtension("GL_CHROMIUM_flipy")
-        || !contextSupport.canUseCopyTextureCHROMIUM(internalFormat, destType, level))
+
+    if (!Extensions3DUtil::canUseCopyTextureCHROMIUM(internalFormat, destType, level))
         return false;
 
     bool unpackPremultiplyAlphaNeeded = false;
@@ -452,7 +444,6 @@ void DrawingBuffer::releaseResources()
         if (m_fbo)
             m_context->deleteFramebuffer(m_fbo);
 
-        m_contextSupport.clear();
         m_context = 0;
     }
 
@@ -791,7 +782,7 @@ PassRefPtr<Uint8ClampedArray> DrawingBuffer::paintRenderingResultsToImageData(in
     RefPtr<Uint8ClampedArray> pixels = Uint8ClampedArray::createUninitialized(width * height * 4);
 
     m_context->bindFramebuffer(GL_FRAMEBUFFER, framebuffer());
-    readBackFramebuffer(pixels->data(), width, height, ReadbackRGBA, GraphicsContext3D::AlphaDoNothing);
+    readBackFramebuffer(pixels->data(), width, height, ReadbackRGBA, WebGLImageConversion::AlphaDoNothing);
     flipVertically(pixels->data(), width, height);
 
     return pixels.release();
@@ -826,7 +817,7 @@ void DrawingBuffer::paintFramebufferToCanvas(int framebuffer, int width, int hei
     pixels = static_cast<unsigned char*>(readbackBitmap->getPixels());
 
     m_context->bindFramebuffer(GL_FRAMEBUFFER, framebuffer);
-    readBackFramebuffer(pixels, width, height, ReadbackSkia, premultiplyAlpha ? GraphicsContext3D::AlphaDoPremultiply : GraphicsContext3D::AlphaDoNothing);
+    readBackFramebuffer(pixels, width, height, ReadbackSkia, premultiplyAlpha ? WebGLImageConversion::AlphaDoPremultiply : WebGLImageConversion::AlphaDoNothing);
     flipVertically(pixels, width, height);
 
     readbackBitmap->notifyPixelsChanged();
@@ -839,7 +830,7 @@ void DrawingBuffer::paintFramebufferToCanvas(int framebuffer, int width, int hei
     }
 }
 
-void DrawingBuffer::readBackFramebuffer(unsigned char* pixels, int width, int height, ReadbackOrder readbackOrder, GraphicsContext3D::AlphaOp op)
+void DrawingBuffer::readBackFramebuffer(unsigned char* pixels, int width, int height, ReadbackOrder readbackOrder, WebGLImageConversion::AlphaOp op)
 {
     if (m_packAlignment > 4)
         m_context->pixelStorei(GL_PACK_ALIGNMENT, 1);
@@ -859,13 +850,13 @@ void DrawingBuffer::readBackFramebuffer(unsigned char* pixels, int width, int he
 #endif
     }
 
-    if (op == GraphicsContext3D::AlphaDoPremultiply) {
+    if (op == WebGLImageConversion::AlphaDoPremultiply) {
         for (size_t i = 0; i < bufferSize; i += 4) {
             pixels[i + 0] = std::min(255, pixels[i + 0] * pixels[i + 3] / 255);
             pixels[i + 1] = std::min(255, pixels[i + 1] * pixels[i + 3] / 255);
             pixels[i + 2] = std::min(255, pixels[i + 2] * pixels[i + 3] / 255);
         }
-    } else if (op != GraphicsContext3D::AlphaDoNothing) {
+    } else if (op != WebGLImageConversion::AlphaDoNothing) {
         ASSERT_NOT_REACHED();
     }
 }