Merge WebKit at r75315: Initial merge by git.

Change-Id: I570314b346ce101c935ed22a626b48c2af266b84

1 files changed, 133 insertions, 0 deletions

diff --git a/Source/WebCore/platform/graphics/chromium/PluginLayerChromium.cpp b/Source/WebCore/platform/graphics/chromium/PluginLayerChromium.cpp
new file mode 100644
index 0000000..878c142
--- /dev/null
+++ b/Source/WebCore/platform/graphics/chromium/PluginLayerChromium.cpp
@@ -0,0 +1,133 @@
+/*
+ * Copyright (C) 2010 Google 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 AND ITS CONTRIBUTORS "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 OR ITS 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"
+
+#if USE(ACCELERATED_COMPOSITING)
+
+#include "PluginLayerChromium.h"
+
+#include "GraphicsContext3D.h"
+#include "LayerRendererChromium.h"
+#include <GLES2/gl2.h>
+
+namespace WebCore {
+
+PluginLayerChromium::SharedValues::SharedValues(GraphicsContext3D* context)
+    : m_context(context)
+    , m_shaderProgram(0)
+    , m_shaderSamplerLocation(-1)
+    , m_shaderMatrixLocation(-1)
+    , m_shaderAlphaLocation(-1)
+    , m_initialized(false)
+{
+    char vertexShaderString[] =
+        "attribute vec4 a_position;   \n"
+        "attribute vec2 a_texCoord;   \n"
+        "uniform mat4 matrix;         \n"
+        "varying vec2 v_texCoord;     \n"
+        "void main()                  \n"
+        "{                            \n"
+        "  gl_Position = matrix * a_position; \n"
+        "  v_texCoord = a_texCoord;   \n"
+        "}                            \n";
+
+    char fragmentShaderString[] =
+        "precision mediump float;                            \n"
+        "varying vec2 v_texCoord;                            \n"
+        "uniform sampler2D s_texture;                        \n"
+        "uniform float alpha;                                \n"
+        "void main()                                         \n"
+        "{                                                   \n"
+        "  vec4 texColor = texture2D(s_texture, vec2(v_texCoord.x, v_texCoord.y)); \n"
+        "  gl_FragColor = vec4(texColor.x, texColor.y, texColor.z, texColor.w) * alpha; \n"
+        "}                                                   \n";
+
+    m_shaderProgram = createShaderProgram(m_context, vertexShaderString, fragmentShaderString);
+    if (!m_shaderProgram) {
+        LOG_ERROR("PluginLayerChromium: Failed to create shader program");
+        return;
+    }
+
+    m_shaderSamplerLocation = m_context->getUniformLocation(m_shaderProgram, "s_texture");
+    m_shaderMatrixLocation = m_context->getUniformLocation(m_shaderProgram, "matrix");
+    m_shaderAlphaLocation = m_context->getUniformLocation(m_shaderProgram, "alpha");
+    ASSERT(m_shaderSamplerLocation != -1);
+    ASSERT(m_shaderMatrixLocation != -1);
+    ASSERT(m_shaderAlphaLocation != -1);
+
+    m_initialized = true;
+}
+
+PluginLayerChromium::SharedValues::~SharedValues()
+{
+    if (m_shaderProgram)
+        GLC(m_context, m_context->deleteProgram(m_shaderProgram));
+}
+
+PassRefPtr<PluginLayerChromium> PluginLayerChromium::create(GraphicsLayerChromium* owner)
+{
+    return adoptRef(new PluginLayerChromium(owner));
+}
+
+PluginLayerChromium::PluginLayerChromium(GraphicsLayerChromium* owner)
+    : LayerChromium(owner)
+{
+}
+
+void PluginLayerChromium::setTextureId(unsigned id)
+{
+    m_textureId = id;
+}
+
+void PluginLayerChromium::updateContentsIfDirty()
+{
+}
+
+void PluginLayerChromium::draw()
+{
+    ASSERT(layerRenderer());
+    const PluginLayerChromium::SharedValues* sv = layerRenderer()->pluginLayerSharedValues();
+    ASSERT(sv && sv->initialized());
+    GraphicsContext3D* context = layerRendererContext();
+    GLC(context, context->activeTexture(GL_TEXTURE0));
+    GLC(context, context->bindTexture(GL_TEXTURE_2D, m_textureId));
+    
+    // FIXME: setting the texture parameters every time is redundant. Move this code somewhere
+    // where it will only happen once per texture.
+    GLC(context, context->texParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR));
+    GLC(context, context->texParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR));
+    GLC(context, context->texParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE));
+    GLC(context, context->texParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE));
+    
+    layerRenderer()->useShader(sv->shaderProgram());
+    GLC(context, context->uniform1i(sv->shaderSamplerLocation(), 0));
+    drawTexturedQuad(context, layerRenderer()->projectionMatrix(), drawTransform(),
+                     bounds().width(), bounds().height(), drawOpacity(),
+                     sv->shaderMatrixLocation(), sv->shaderAlphaLocation());
+}
+
+}
+#endif // USE(ACCELERATED_COMPOSITING)