GraphicsContext3D* WebGLLayerChromium::context() const
{
    if (drawingBuffer())
        return drawingBuffer()->graphicsContext3D().get();

    return 0;
}
示例#2
0
void WebGLLayerChromium::updateCompositorResources(GraphicsContext3D* rendererContext, CCTextureUpdater&)
{
    if (!drawsContent())
        return;

    if (!m_needsDisplay)
        return;

    if (m_textureChanged) {
        rendererContext->bindTexture(GraphicsContext3D::TEXTURE_2D, m_textureId);
        // Set the min-mag filters to linear and wrap modes to GL_CLAMP_TO_EDGE
        // to get around NPOT texture limitations of GLES.
        rendererContext->texParameteri(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D::TEXTURE_MIN_FILTER, GraphicsContext3D::LINEAR);
        rendererContext->texParameteri(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D::TEXTURE_MAG_FILTER, GraphicsContext3D::LINEAR);
        rendererContext->texParameteri(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D::TEXTURE_WRAP_S, GraphicsContext3D::CLAMP_TO_EDGE);
        rendererContext->texParameteri(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D::TEXTURE_WRAP_T, GraphicsContext3D::CLAMP_TO_EDGE);
        m_textureChanged = false;
    }
    // Update the contents of the texture used by the compositor.
    if (m_needsDisplay && m_textureUpdated) {
        // publishToPlatformLayer prepares the contents of the off-screen render target for use by the compositor.
        drawingBuffer()->publishToPlatformLayer();
        context()->markLayerComposited();
        m_updateRect = FloatRect(FloatPoint(), bounds());
        m_needsDisplay = false;
        m_textureUpdated = false;
    }
}
示例#3
0
void WebGLLayerChromium::paintContentsIfDirty(const Region&)
{
    if (!drawsContent() || !m_needsDisplay || !m_textureUpdated)
        return;

    drawingBuffer()->publishToPlatformLayer();
    context()->markLayerComposited();
    m_needsDisplay = false;
    m_textureUpdated = false;
    m_contextLost = context()->getExtensions()->getGraphicsResetStatusARB() != GraphicsContext3D::NO_ERROR;
}