void VideoLayerChromium::drawYUV(const SharedValues* sv)
{
GraphicsContext3D* context = layerRendererContext();
GLC(context, context->activeTexture(GraphicsContext3D::TEXTURE1));
GLC(context, context->bindTexture(GraphicsContext3D::TEXTURE_2D, m_textures[VideoFrameChromium::yPlane]));
GLC(context, context->activeTexture(GraphicsContext3D::TEXTURE2));
GLC(context, context->bindTexture(GraphicsContext3D::TEXTURE_2D, m_textures[VideoFrameChromium::uPlane]));
GLC(context, context->activeTexture(GraphicsContext3D::TEXTURE3));
GLC(context, context->bindTexture(GraphicsContext3D::TEXTURE_2D, m_textures[VideoFrameChromium::vPlane]));
layerRenderer()->useShader(sv->yuvShaderProgram());
unsigned frameWidth = m_frameSizes[VideoFrameChromium::yPlane].width();
unsigned textureWidth = m_textureSizes[VideoFrameChromium::yPlane].width();
float widthScaleFactor = static_cast<float>(frameWidth) / textureWidth;
GLC(context, context->uniform1f(sv->yuvWidthScaleFactorLocation(), widthScaleFactor));
GLC(context, context->uniform1i(sv->yTextureLocation(), 1));
GLC(context, context->uniform1i(sv->uTextureLocation(), 2));
GLC(context, context->uniform1i(sv->vTextureLocation(), 3));
GLC(context, context->uniformMatrix3fv(sv->ccMatrixLocation(), 0, const_cast<float*>(yuv2RGB), 1));
drawTexturedQuad(context, layerRenderer()->projectionMatrix(), drawTransform(),
bounds().width(), bounds().height(), drawOpacity(),
sv->yuvShaderMatrixLocation(), sv->yuvAlphaLocation());
// Reset active texture back to texture 0.
GLC(context, context->activeTexture(GraphicsContext3D::TEXTURE0));
}
void ContentLayerChromium::draw()
{
if (m_skipsDraw)
return;
ASSERT(layerRenderer());
const ContentLayerChromium::SharedValues* sv = layerRenderer()->contentLayerSharedValues();
ASSERT(sv && sv->initialized());
GraphicsContext3D* context = layerRendererContext();
GLC(context, context->activeTexture(GraphicsContext3D::TEXTURE0));
GLC(context, context->bindTexture(GraphicsContext3D::TEXTURE_2D, m_contentsTexture));
layerRenderer()->useShader(sv->contentShaderProgram());
GLC(context, context->uniform1i(sv->shaderSamplerLocation(), 0));
if (requiresClippedUpdateRect()) {
float m43 = drawTransform().m43();
TransformationMatrix transform;
transform.translate3d(m_largeLayerDrawRect.center().x(), m_largeLayerDrawRect.center().y(), m43);
drawTexturedQuad(context, layerRenderer()->projectionMatrix(),
transform, m_largeLayerDrawRect.width(),
m_largeLayerDrawRect.height(), drawOpacity(),
sv->shaderMatrixLocation(), sv->shaderAlphaLocation());
} else {
drawTexturedQuad(context, layerRenderer()->projectionMatrix(),
drawTransform(), m_bounds.width(), m_bounds.height(),
drawOpacity(), sv->shaderMatrixLocation(),
sv->shaderAlphaLocation());
}
}
void ContentLayerChromium::updateTextureRect(void* pixels, const IntSize& bitmapSize, const IntSize& requiredTextureSize, const IntRect& updateRect, unsigned textureId)
{
if (!pixels)
return;
GraphicsContext3D* context = layerRendererContext();
context->bindTexture(GraphicsContext3D::TEXTURE_2D, textureId);
// If the texture id or size changed since last time then we need to tell GL
// to re-allocate a texture.
if (m_contentsTexture != textureId || requiredTextureSize != m_allocatedTextureSize) {
ASSERT(bitmapSize == requiredTextureSize);
GLC(context, context->texImage2D(GraphicsContext3D::TEXTURE_2D, 0, GraphicsContext3D::RGBA, requiredTextureSize.width(), requiredTextureSize.height(), 0, GraphicsContext3D::RGBA, GraphicsContext3D::UNSIGNED_BYTE, pixels));
m_contentsTexture = textureId;
m_allocatedTextureSize = requiredTextureSize;
} else {
ASSERT(updateRect.width() <= m_allocatedTextureSize.width() && updateRect.height() <= m_allocatedTextureSize.height());
ASSERT(updateRect.width() == bitmapSize.width() && updateRect.height() == bitmapSize.height());
GLC(context, context->texSubImage2D(GraphicsContext3D::TEXTURE_2D, 0, updateRect.x(), updateRect.y(), updateRect.width(), updateRect.height(), GraphicsContext3D::RGBA, GraphicsContext3D::UNSIGNED_BYTE, pixels));
}
m_dirtyRect.setSize(FloatSize());
// Large layers always stay dirty, because they need to update when the content rect changes.
m_contentsDirty = requiresClippedUpdateRect();
}
void CCTextureLayerImpl::willDraw(LayerRendererChromium* layerRenderer)
{
CCLayerImpl::willDraw(layerRenderer);
if (m_ioSurfaceChanged) {
GraphicsContext3D* context = layerRenderer->context();
Extensions3DChromium* extensions = static_cast<Extensions3DChromium*>(context->getExtensions());
ASSERT(extensions->supports("GL_CHROMIUM_iosurface"));
ASSERT(extensions->supports("GL_ARB_texture_rectangle"));
if (!m_ioSurfaceTextureId)
m_ioSurfaceTextureId = context->createTexture();
GLC(context, context->activeTexture(GraphicsContext3D::TEXTURE0));
GLC(context, context->bindTexture(Extensions3D::TEXTURE_RECTANGLE_ARB, m_ioSurfaceTextureId));
GLC(context, context->texParameteri(Extensions3D::TEXTURE_RECTANGLE_ARB, GraphicsContext3D::TEXTURE_MIN_FILTER, GraphicsContext3D::LINEAR));
GLC(context, context->texParameteri(Extensions3D::TEXTURE_RECTANGLE_ARB, GraphicsContext3D::TEXTURE_MAG_FILTER, GraphicsContext3D::LINEAR));
GLC(context, context->texParameteri(Extensions3D::TEXTURE_RECTANGLE_ARB, GraphicsContext3D::TEXTURE_WRAP_S, GraphicsContext3D::CLAMP_TO_EDGE));
GLC(context, context->texParameteri(Extensions3D::TEXTURE_RECTANGLE_ARB, GraphicsContext3D::TEXTURE_WRAP_T, GraphicsContext3D::CLAMP_TO_EDGE));
extensions->texImageIOSurface2DCHROMIUM(Extensions3D::TEXTURE_RECTANGLE_ARB,
m_ioSurfaceSize.width(),
m_ioSurfaceSize.height(),
m_ioSurfaceId,
0);
// Do not check for error conditions. texImageIOSurface2DCHROMIUM is supposed to hold on to
// the last good IOSurface if the new one is already closed. This is only a possibility
// during live resizing of plugins. However, it seems that this is not sufficient to
// completely guard against garbage being drawn. If this is found to be a significant issue,
// it may be necessary to explicitly tell the embedder when to free the surfaces it has
// allocated.
m_ioSurfaceChanged = false;
}
}
void WebGLLayerChromium::updateCompositorResources()
{
if (!m_context)
return;
if (!m_contentsDirty)
return;
GraphicsContext3D* rendererContext = layerRendererContext();
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_contentsDirty && m_textureUpdated) {
// prepareTexture copies the contents of the off-screen render target into the texture
// used by the compositor.
//
m_context->prepareTexture();
m_context->markLayerComposited();
m_contentsDirty = false;
m_textureUpdated = false;
}
}
void Canvas2DLayerChromium::updateCompositorResources()
{
if (!m_contentsDirty || !m_drawingBuffer)
return;
if (m_textureChanged) { // We have to generate a new backing texture.
GraphicsContext3D* context = layerRendererContext();
if (m_textureId)
context->deleteTexture(m_textureId);
m_textureId = context->createTexture();
context->activeTexture(GraphicsContext3D::TEXTURE0);
context->bindTexture(GraphicsContext3D::TEXTURE_2D, m_textureId);
IntSize size = m_drawingBuffer->size();
context->texImage2DResourceSafe(GraphicsContext3D::TEXTURE_2D, 0, GraphicsContext3D::RGBA, size.width(), size.height(), 0, GraphicsContext3D::RGBA, GraphicsContext3D::UNSIGNED_BYTE);
// Set the min-mag filters to linear and wrap modes to GraphicsContext3D::CLAMP_TO_EDGE
// to get around NPOT texture limitations of GLES.
context->texParameteri(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D::TEXTURE_MIN_FILTER, GraphicsContext3D::LINEAR);
context->texParameteri(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D::TEXTURE_MAG_FILTER, GraphicsContext3D::LINEAR);
context->texParameteri(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D::TEXTURE_WRAP_S, GraphicsContext3D::CLAMP_TO_EDGE);
context->texParameteri(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D::TEXTURE_WRAP_T, GraphicsContext3D::CLAMP_TO_EDGE);
m_textureChanged = false;
// FIXME: The finish() here is required because we have to make sure that the texture created in this
// context (the compositor context) is actually created by the service side before the child context
// attempts to use it (in publishToPlatformLayer). finish() is currently the only call with strong
// enough semantics to promise this, but is actually much stronger. Ideally we'd do something like
// inserting a fence here and waiting for it before trying to publish.
context->finish();
}
// Update the contents of the texture used by the compositor.
if (m_contentsDirty) {
m_drawingBuffer->publishToPlatformLayer();
m_contentsDirty = false;
}
}
void CCVideoLayerImpl::drawYUV(LayerRendererChromium* layerRenderer) const
{
const YUVProgram* program = layerRenderer->videoLayerYUVProgram();
ASSERT(program && program->initialized());
GraphicsContext3D* context = layerRenderer->context();
CCVideoLayerImpl::Texture yTexture = m_textures[VideoFrameChromium::yPlane];
CCVideoLayerImpl::Texture uTexture = m_textures[VideoFrameChromium::uPlane];
CCVideoLayerImpl::Texture vTexture = m_textures[VideoFrameChromium::vPlane];
GLC(context, context->activeTexture(GraphicsContext3D::TEXTURE1));
GLC(context, context->bindTexture(GraphicsContext3D::TEXTURE_2D, yTexture.id));
GLC(context, context->activeTexture(GraphicsContext3D::TEXTURE2));
GLC(context, context->bindTexture(GraphicsContext3D::TEXTURE_2D, uTexture.id));
GLC(context, context->activeTexture(GraphicsContext3D::TEXTURE3));
GLC(context, context->bindTexture(GraphicsContext3D::TEXTURE_2D, vTexture.id));
GLC(context, context->useProgram(program->program()));
float yWidthScaleFactor = static_cast<float>(yTexture.visibleSize.width()) / yTexture.size.width();
// Arbitrarily take the u sizes because u and v dimensions are identical.
float uvWidthScaleFactor = static_cast<float>(uTexture.visibleSize.width()) / uTexture.size.width();
GLC(context, context->uniform1f(program->vertexShader().yWidthScaleFactorLocation(), yWidthScaleFactor));
GLC(context, context->uniform1f(program->vertexShader().uvWidthScaleFactorLocation(), uvWidthScaleFactor));
GLC(context, context->uniform1i(program->fragmentShader().yTextureLocation(), 1));
GLC(context, context->uniform1i(program->fragmentShader().uTextureLocation(), 2));
GLC(context, context->uniform1i(program->fragmentShader().vTextureLocation(), 3));
GLC(context, context->uniformMatrix3fv(program->fragmentShader().ccMatrixLocation(), 0, const_cast<float*>(yuv2RGB), 1));
GLC(context, context->uniform3fv(program->fragmentShader().yuvAdjLocation(), const_cast<float*>(yuvAdjust), 1));
layerRenderer->drawTexturedQuad(drawTransform(), bounds().width(), bounds().height(), drawOpacity(), FloatQuad(),
program->vertexShader().matrixLocation(),
program->fragmentShader().alphaLocation(),
-1);
// Reset active texture back to texture 0.
GLC(context, context->activeTexture(GraphicsContext3D::TEXTURE0));
}
void ContentLayerChromium::draw()
{
if (m_skipsDraw)
return;
ASSERT(layerRenderer());
const ContentLayerChromium::SharedValues* sv = layerRenderer()->contentLayerSharedValues();
ASSERT(sv && sv->initialized());
GraphicsContext3D* context = layerRendererContext();
GLC(context, context->activeTexture(GraphicsContext3D::TEXTURE0));
GLC(context, context->bindTexture(GraphicsContext3D::TEXTURE_2D, m_contentsTexture));
layerRenderer()->useShader(sv->contentShaderProgram());
GLC(context, context->uniform1i(sv->shaderSamplerLocation(), 0));
drawTexturedQuad(context, layerRenderer()->projectionMatrix(), drawTransform(),
bounds().width(), bounds().height(), drawOpacity(),
sv->shaderMatrixLocation(), sv->shaderAlphaLocation());
}
void VideoLayerChromium::drawRGBA(const SharedValues* sv)
{
GraphicsContext3D* context = layerRendererContext();
GLC(context, context->activeTexture(GraphicsContext3D::TEXTURE0));
GLC(context, context->bindTexture(GraphicsContext3D::TEXTURE_2D, m_textures[VideoFrameChromium::rgbPlane]));
layerRenderer()->useShader(sv->rgbaShaderProgram());
unsigned frameWidth = m_frameSizes[VideoFrameChromium::rgbPlane].width();
unsigned textureWidth = m_textureSizes[VideoFrameChromium::rgbPlane].width();
float widthScaleFactor = static_cast<float>(frameWidth) / textureWidth;
GLC(context, context->uniform1f(sv->rgbaWidthScaleFactorLocation(), widthScaleFactor));
GLC(context, context->uniform1i(sv->rgbaTextureLocation(), 0));
drawTexturedQuad(context, layerRenderer()->projectionMatrix(), drawTransform(),
bounds().width(), bounds().height(), drawOpacity(),
sv->rgbaShaderMatrixLocation(), sv->rgbaAlphaLocation());
}
void CCCanvasLayerImpl::draw(const IntRect&)
{
ASSERT(layerRenderer());
const CCCanvasLayerImpl::Program* program = layerRenderer()->canvasLayerProgram();
ASSERT(program && program->initialized());
GraphicsContext3D* context = layerRenderer()->context();
GLC(context, context->activeTexture(GraphicsContext3D::TEXTURE0));
GLC(context, context->bindTexture(GraphicsContext3D::TEXTURE_2D, m_textureId));
GC3Denum sfactor = m_premultipliedAlpha ? GraphicsContext3D::ONE : GraphicsContext3D::SRC_ALPHA;
GLC(context, context->blendFunc(sfactor, GraphicsContext3D::ONE_MINUS_SRC_ALPHA));
layerRenderer()->useShader(program->program());
GLC(context, context->uniform1i(program->fragmentShader().samplerLocation(), 0));
LayerChromium::drawTexturedQuad(context, layerRenderer()->projectionMatrix(), drawTransform(),
bounds().width(), bounds().height(), drawOpacity(),
program->vertexShader().matrixLocation(),
program->fragmentShader().alphaLocation());
}
void ContentLayerChromium::updateTextureRect(void* pixels, const IntSize& bitmapSize,
const IntSize& requiredTextureSize, const IntRect& updateRect, unsigned textureId, MipmapUse requestMipmap)
{
if (!pixels)
return;
GraphicsContext3D* context = layerRendererContext();
context->bindTexture(GraphicsContext3D::TEXTURE_2D, textureId);
bool generateMipmap = (requestMipmap == useMipmap)
&& (layerRenderer()->contentLayerSharedValues()->npotSupported()
|| (isPowerOfTwo(updateRect.width()) && isPowerOfTwo(updateRect.height())));
// If the texture id or size changed since last time then we need to tell GL
// to re-allocate a texture.
if (m_contentsTexture != textureId || requiredTextureSize != m_allocatedTextureSize) {
ASSERT(bitmapSize == requiredTextureSize);
GLC(context, context->texImage2D(GraphicsContext3D::TEXTURE_2D, 0, GraphicsContext3D::RGBA, requiredTextureSize.width(), requiredTextureSize.height(), 0, GraphicsContext3D::RGBA, GraphicsContext3D::UNSIGNED_BYTE, pixels));
if (generateMipmap) {
GLC(context, context->texParameteri(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D::TEXTURE_MIN_FILTER,
GraphicsContext3D::LINEAR_MIPMAP_LINEAR));
GLC(context, context->texParameteri(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D::TEXTURE_MAG_FILTER,
GraphicsContext3D::LINEAR));
} else {
GLC(context, context->texParameteri(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D::TEXTURE_MIN_FILTER,
GraphicsContext3D::LINEAR));
GLC(context, context->texParameteri(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D::TEXTURE_MAG_FILTER,
GraphicsContext3D::LINEAR));
}
m_contentsTexture = textureId;
m_allocatedTextureSize = requiredTextureSize;
} else {
ASSERT(updateRect.width() <= m_allocatedTextureSize.width() && updateRect.height() <= m_allocatedTextureSize.height());
ASSERT(updateRect.width() == bitmapSize.width() && updateRect.height() == bitmapSize.height());
GLC(context, context->texSubImage2D(GraphicsContext3D::TEXTURE_2D, 0, updateRect.x(), updateRect.y(), updateRect.width(), updateRect.height(), GraphicsContext3D::RGBA, GraphicsContext3D::UNSIGNED_BYTE, pixels));
}
if (generateMipmap)
GLC(context, context->generateMipmap(GraphicsContext3D::TEXTURE_2D));
m_dirtyRect.setSize(FloatSize());
m_contentsDirty = false;
}
void CCVideoLayerImpl::drawNativeTexture(LayerRendererChromium* layerRenderer) const
{
const NativeTextureProgram* program = layerRenderer->videoLayerNativeTextureProgram();
ASSERT(program && program->initialized());
GraphicsContext3D* context = layerRenderer->context();
GLC(context, context->activeTexture(GraphicsContext3D::TEXTURE0));
GLC(context, context->bindTexture(GraphicsContext3D::TEXTURE_2D, m_nativeTextureId));
GLC(context, context->useProgram(program->program()));
float widthScaleFactor = static_cast<float>(m_nativeTextureVisibleSize.width()) / m_nativeTextureSize.width();
GLC(context, context->uniform4f(program->vertexShader().texTransformLocation(), 0, 0, widthScaleFactor, 1));
GLC(context, context->uniform1i(program->fragmentShader().samplerLocation(), 0));
layerRenderer->drawTexturedQuad(drawTransform(), bounds().width(), bounds().height(), drawOpacity(), layerRenderer->sharedGeometryQuad(),
program->vertexShader().matrixLocation(),
program->fragmentShader().alphaLocation(),
-1);
}
void CCPluginLayerImpl::draw()
{
ASSERT(layerRenderer());
const CCPluginLayerImpl::Program* program = layerRenderer()->pluginLayerProgram();
ASSERT(program && program->initialized());
GraphicsContext3D* context = layerRenderer()->context();
GLC(context, context->activeTexture(GraphicsContext3D::TEXTURE0));
GLC(context, context->bindTexture(GraphicsContext3D::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(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D::TEXTURE_MIN_FILTER, GraphicsContext3D::LINEAR));
GLC(context, context->texParameteri(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D::TEXTURE_MAG_FILTER, GraphicsContext3D::LINEAR));
GLC(context, context->texParameteri(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D::TEXTURE_WRAP_S, GraphicsContext3D::CLAMP_TO_EDGE));
GLC(context, context->texParameteri(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D::TEXTURE_WRAP_T, GraphicsContext3D::CLAMP_TO_EDGE));
layerRenderer()->useShader(program->program());
GLC(context, context->uniform1i(program->fragmentShader().samplerLocation(), 0));
LayerChromium::drawTexturedQuad(context, layerRenderer()->projectionMatrix(), drawTransform(),
bounds().width(), bounds().height(), drawOpacity(),
program->vertexShader().matrixLocation(),
program->fragmentShader().alphaLocation());
}
// static
bool WebGLDrawBuffers::satisfiesWebGLRequirements(WebGLRenderingContextBase* webglContext)
{
GraphicsContext3D* context = webglContext->graphicsContext3D();
// This is called after we make sure GL_EXT_draw_buffers is supported.
GC3Dint maxDrawBuffers = 0;
GC3Dint maxColorAttachments = 0;
context->getIntegerv(Extensions3D::MAX_DRAW_BUFFERS_EXT, &maxDrawBuffers);
context->getIntegerv(Extensions3D::MAX_COLOR_ATTACHMENTS_EXT, &maxColorAttachments);
if (maxDrawBuffers < 4 || maxColorAttachments < 4)
return false;
Platform3DObject fbo = context->createFramebuffer();
context->bindFramebuffer(GraphicsContext3D::FRAMEBUFFER, fbo);
const unsigned char buffer[4] = { 0, 0, 0, 0 }; // textures are required to be initialized for other ports.
bool supportsDepth = (context->getExtensions()->supports("GL_CHROMIUM_depth_texture")
|| context->getExtensions()->supports("GL_OES_depth_texture")
|| context->getExtensions()->supports("GL_ARB_depth_texture"));
bool supportsDepthStencil = (context->getExtensions()->supports("GL_EXT_packed_depth_stencil")
|| context->getExtensions()->supports("GL_OES_packed_depth_stencil"));
Platform3DObject depthStencil = 0;
if (supportsDepthStencil) {
depthStencil = context->createTexture();
context->bindTexture(GraphicsContext3D::TEXTURE_2D, depthStencil);
context->texImage2D(GraphicsContext3D::TEXTURE_2D, 0, GraphicsContext3D::DEPTH_STENCIL, 1, 1, 0, GraphicsContext3D::DEPTH_STENCIL, GraphicsContext3D::UNSIGNED_INT_24_8, buffer);
}
Platform3DObject depth = 0;
if (supportsDepth) {
depth = context->createTexture();
context->bindTexture(GraphicsContext3D::TEXTURE_2D, depth);
context->texImage2D(GraphicsContext3D::TEXTURE_2D, 0, GraphicsContext3D::DEPTH_COMPONENT, 1, 1, 0, GraphicsContext3D::DEPTH_COMPONENT, GraphicsContext3D::UNSIGNED_INT, buffer);
}
Vector<Platform3DObject> colors;
bool ok = true;
GC3Dint maxAllowedBuffers = std::min(maxDrawBuffers, maxColorAttachments);
for (GC3Dint i = 0; i < maxAllowedBuffers; ++i) {
Platform3DObject color = context->createTexture();
colors.append(color);
context->bindTexture(GraphicsContext3D::TEXTURE_2D, color);
context->texImage2D(GraphicsContext3D::TEXTURE_2D, 0, GraphicsContext3D::RGBA, 1, 1, 0, GraphicsContext3D::RGBA, GraphicsContext3D::UNSIGNED_BYTE, buffer);
context->framebufferTexture2D(GraphicsContext3D::FRAMEBUFFER, GraphicsContext3D::COLOR_ATTACHMENT0 + i, GraphicsContext3D::TEXTURE_2D, color, 0);
if (context->checkFramebufferStatus(GraphicsContext3D::FRAMEBUFFER) != GraphicsContext3D::FRAMEBUFFER_COMPLETE) {
ok = false;
break;
}
if (supportsDepth) {
context->framebufferTexture2D(GraphicsContext3D::FRAMEBUFFER, GraphicsContext3D::DEPTH_ATTACHMENT, GraphicsContext3D::TEXTURE_2D, depth, 0);
if (context->checkFramebufferStatus(GraphicsContext3D::FRAMEBUFFER) != GraphicsContext3D::FRAMEBUFFER_COMPLETE) {
ok = false;
break;
}
context->framebufferTexture2D(GraphicsContext3D::FRAMEBUFFER, GraphicsContext3D::DEPTH_ATTACHMENT, GraphicsContext3D::TEXTURE_2D, 0, 0);
}
if (supportsDepthStencil) {
context->framebufferTexture2D(GraphicsContext3D::FRAMEBUFFER, GraphicsContext3D::DEPTH_ATTACHMENT, GraphicsContext3D::TEXTURE_2D, depthStencil, 0);
context->framebufferTexture2D(GraphicsContext3D::FRAMEBUFFER, GraphicsContext3D::STENCIL_ATTACHMENT, GraphicsContext3D::TEXTURE_2D, depthStencil, 0);
if (context->checkFramebufferStatus(GraphicsContext3D::FRAMEBUFFER) != GraphicsContext3D::FRAMEBUFFER_COMPLETE) {
ok = false;
break;
}
context->framebufferTexture2D(GraphicsContext3D::FRAMEBUFFER, GraphicsContext3D::DEPTH_ATTACHMENT, GraphicsContext3D::TEXTURE_2D, 0, 0);
context->framebufferTexture2D(GraphicsContext3D::FRAMEBUFFER, GraphicsContext3D::STENCIL_ATTACHMENT, GraphicsContext3D::TEXTURE_2D, 0, 0);
}
}
webglContext->restoreCurrentFramebuffer();
context->deleteFramebuffer(fbo);
webglContext->restoreCurrentTexture2D();
if (supportsDepth)
context->deleteTexture(depth);
if (supportsDepthStencil)
context->deleteTexture(depthStencil);
for (auto& color : colors)
context->deleteTexture(color);
return ok;
}
void CCPluginLayerImpl::draw(LayerRendererChromium* layerRenderer)
{
ASSERT(CCProxy::isImplThread());
if (m_ioSurfaceChanged) {
GraphicsContext3D* context = layerRenderer->context();
Extensions3DChromium* extensions = static_cast<Extensions3DChromium*>(context->getExtensions());
ASSERT(extensions->supports("GL_CHROMIUM_iosurface"));
ASSERT(extensions->supports("GL_ARB_texture_rectangle"));
if (!m_ioSurfaceTextureId)
m_ioSurfaceTextureId = context->createTexture();
GLC(context, context->activeTexture(GraphicsContext3D::TEXTURE0));
GLC(context, context->bindTexture(Extensions3D::TEXTURE_RECTANGLE_ARB, m_ioSurfaceTextureId));
GLC(context, context->texParameteri(Extensions3D::TEXTURE_RECTANGLE_ARB, GraphicsContext3D::TEXTURE_MIN_FILTER, GraphicsContext3D::LINEAR));
GLC(context, context->texParameteri(Extensions3D::TEXTURE_RECTANGLE_ARB, GraphicsContext3D::TEXTURE_MAG_FILTER, GraphicsContext3D::LINEAR));
GLC(context, context->texParameteri(Extensions3D::TEXTURE_RECTANGLE_ARB, GraphicsContext3D::TEXTURE_WRAP_S, GraphicsContext3D::CLAMP_TO_EDGE));
GLC(context, context->texParameteri(Extensions3D::TEXTURE_RECTANGLE_ARB, GraphicsContext3D::TEXTURE_WRAP_T, GraphicsContext3D::CLAMP_TO_EDGE));
extensions->texImageIOSurface2DCHROMIUM(Extensions3D::TEXTURE_RECTANGLE_ARB,
m_ioSurfaceWidth,
m_ioSurfaceHeight,
m_ioSurfaceId,
0);
// Do not check for error conditions. texImageIOSurface2DCHROMIUM is supposed to hold on to
// the last good IOSurface if the new one is already closed. This is only a possibility
// during live resizing of plugins. However, it seems that this is not sufficient to
// completely guard against garbage being drawn. If this is found to be a significant issue,
// it may be necessary to explicitly tell the embedder when to free the surfaces it has
// allocated.
m_ioSurfaceChanged = false;
}
if (m_ioSurfaceTextureId) {
TexTransformPluginProgramBinding binding;
if (m_flipped)
binding.set(layerRenderer->pluginLayerTexRectProgramFlip());
else
binding.set(layerRenderer->pluginLayerTexRectProgram());
GraphicsContext3D* context = layerRenderer->context();
GLC(context, context->activeTexture(GraphicsContext3D::TEXTURE0));
GLC(context, context->bindTexture(Extensions3D::TEXTURE_RECTANGLE_ARB, m_ioSurfaceTextureId));
GLC(context, context->useProgram(binding.programId));
GLC(context, context->uniform1i(binding.samplerLocation, 0));
// Note: this code path ignores m_uvRect.
GLC(context, context->uniform4f(binding.texTransformLocation, 0, 0, m_ioSurfaceWidth, m_ioSurfaceHeight));
layerRenderer->drawTexturedQuad(drawTransform(), bounds().width(), bounds().height(), drawOpacity(), layerRenderer->sharedGeometryQuad(),
binding.matrixLocation,
binding.alphaLocation,
-1);
GLC(context, context->bindTexture(Extensions3D::TEXTURE_RECTANGLE_ARB, 0));
} else {
TexStretchPluginProgramBinding binding;
if (m_flipped)
binding.set(layerRenderer->pluginLayerProgramFlip());
else
binding.set(layerRenderer->pluginLayerProgram());
GraphicsContext3D* context = layerRenderer->context();
GLC(context, context->activeTexture(GraphicsContext3D::TEXTURE0));
GLC(context, context->bindTexture(GraphicsContext3D::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(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D::TEXTURE_MIN_FILTER, GraphicsContext3D::LINEAR));
GLC(context, context->texParameteri(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D::TEXTURE_MAG_FILTER, GraphicsContext3D::LINEAR));
GLC(context, context->texParameteri(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D::TEXTURE_WRAP_S, GraphicsContext3D::CLAMP_TO_EDGE));
GLC(context, context->texParameteri(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D::TEXTURE_WRAP_T, GraphicsContext3D::CLAMP_TO_EDGE));
GLC(context, context->useProgram(binding.programId));
GLC(context, context->uniform1i(binding.samplerLocation, 0));
GLC(context, context->uniform2f(binding.offsetLocation, m_uvRect.x(), m_uvRect.y()));
GLC(context, context->uniform2f(binding.scaleLocation, m_uvRect.width(), m_uvRect.height()));
layerRenderer->drawTexturedQuad(drawTransform(), bounds().width(), bounds().height(), drawOpacity(), layerRenderer->sharedGeometryQuad(),
binding.matrixLocation,
binding.alphaLocation,
-1);
}
}