bool FECustomFilter::applyShader()
{
Uint8ClampedArray* dstPixelArray = m_customFilterRenderer->premultipliedAlpha() ? createPremultipliedImageResult() : createUnmultipliedImageResult();
if (!dstPixelArray)
return false;
if (!prepareForDrawing())
return false;
FilterEffect* in = inputEffect(0);
IntRect effectDrawingRect = requestedRegionOfInputImageData(in->absolutePaintRect());
IntSize newContextSize(effectDrawingRect.size());
if (!resizeContextIfNeeded(newContextSize))
return false;
bool needsInputTexture = m_customFilterRenderer->programNeedsInputTexture();
if (needsInputTexture) {
RefPtr<Uint8ClampedArray> srcPixelArray = in->asUnmultipliedImage(effectDrawingRect);
uploadInputTexture(srcPixelArray.get());
}
drawFilterMesh(needsInputTexture ? m_inputTexture : 0);
ASSERT(static_cast<size_t>(newContextSize.width() * newContextSize.height() * 4) == dstPixelArray->length());
m_context->readPixels(0, 0, newContextSize.width(), newContextSize.height(), GraphicsContext3D::RGBA, GraphicsContext3D::UNSIGNED_BYTE, dstPixelArray->data());
return true;
}
bool FECustomFilter::applyShader()
{
Uint8ClampedArray* dstPixelArray = createUnmultipliedImageResult();
if (!dstPixelArray)
return false;
FilterEffect* in = inputEffect(0);
IntRect effectDrawingRect = requestedRegionOfInputImageData(in->absolutePaintRect());
RefPtr<Uint8ClampedArray> srcPixelArray = in->asUnmultipliedImage(effectDrawingRect);
IntSize newContextSize(effectDrawingRect.size());
bool hadContext = m_context;
if (!m_context && !initializeContext())
return false;
m_context->makeContextCurrent();
if (!hadContext || m_contextSize != newContextSize)
resizeContext(newContextSize);
#if !PLATFORM(BLACKBERRY) // BlackBerry defines its own Texture class.
// Do not draw the filter if the input image cannot fit inside a single GPU texture.
if (m_inputTexture->tiles().numTilesX() != 1 || m_inputTexture->tiles().numTilesY() != 1)
return false;
#endif
// The shader had compiler errors. We cannot draw anything.
if (!m_compiledProgram->isInitialized())
return false;
m_context->bindFramebuffer(GraphicsContext3D::FRAMEBUFFER, m_frameBuffer);
m_context->viewport(0, 0, newContextSize.width(), newContextSize.height());
m_context->clearColor(0, 0, 0, 0);
m_context->clear(GraphicsContext3D::COLOR_BUFFER_BIT | GraphicsContext3D::DEPTH_BUFFER_BIT);
bindProgramAndBuffers(srcPixelArray.get());
m_context->drawElements(GraphicsContext3D::TRIANGLES, m_mesh->indicesCount(), GraphicsContext3D::UNSIGNED_SHORT, 0);
unbindVertexAttributes();
ASSERT(static_cast<size_t>(newContextSize.width() * newContextSize.height() * 4) == dstPixelArray->length());
m_context->readPixels(0, 0, newContextSize.width(), newContextSize.height(), GraphicsContext3D::RGBA, GraphicsContext3D::UNSIGNED_BYTE, dstPixelArray->data());
return true;
}
void FECustomFilter::platformApplySoftware()
{
ByteArray* dstPixelArray = createPremultipliedImageResult();
if (!dstPixelArray)
return;
FilterEffect* in = inputEffect(0);
IntRect effectDrawingRect = requestedRegionOfInputImageData(in->absolutePaintRect());
RefPtr<ByteArray> srcPixelArray = in->asPremultipliedImage(effectDrawingRect);
IntSize newContextSize(effectDrawingRect.size());
bool hadContext = m_context;
if (!m_context)
initializeContext(newContextSize);
if (!hadContext || m_contextSize != newContextSize)
resizeContext(newContextSize);
// Do not draw the filter if the input image cannot fit inside a single GPU texture.
if (m_inputTexture->tiles().numTilesX() != 1 || m_inputTexture->tiles().numTilesY() != 1)
return;
// The shader had compiler errors. We cannot draw anything.
if (!m_shader->isInitialized())
return;
m_context->clearColor(0, 0, 0, 0);
m_context->clear(GraphicsContext3D::COLOR_BUFFER_BIT | GraphicsContext3D::DEPTH_BUFFER_BIT);
bindProgramAndBuffers(srcPixelArray.get());
m_context->drawElements(GraphicsContext3D::TRIANGLES, m_mesh->indicesCount(), GraphicsContext3D::UNSIGNED_SHORT, 0);
m_drawingBuffer->commit();
RefPtr<ImageData> imageData = m_context->paintRenderingResultsToImageData(m_drawingBuffer.get());
ByteArray* gpuResult = imageData->data()->data();
ASSERT(gpuResult->length() == dstPixelArray->length());
memcpy(dstPixelArray->data(), gpuResult->data(), gpuResult->length());
}
void FECustomFilter::platformApplySoftware()
{
Uint8ClampedArray* dstPixelArray = createPremultipliedImageResult();
if (!dstPixelArray)
return;
FilterEffect* in = inputEffect(0);
IntRect effectDrawingRect = requestedRegionOfInputImageData(in->absolutePaintRect());
RefPtr<Uint8ClampedArray> srcPixelArray = in->asPremultipliedImage(effectDrawingRect);
IntSize newContextSize(effectDrawingRect.size());
bool hadContext = m_context;
if (!m_context)
initializeContext();
if (!hadContext || m_contextSize != newContextSize)
resizeContext(newContextSize);
// Do not draw the filter if the input image cannot fit inside a single GPU texture.
if (m_inputTexture->tiles().numTilesX() != 1 || m_inputTexture->tiles().numTilesY() != 1)
return;
// The shader had compiler errors. We cannot draw anything.
if (!m_shader->isInitialized())
return;
m_context->bindFramebuffer(GraphicsContext3D::FRAMEBUFFER, m_frameBuffer);
m_context->viewport(0, 0, newContextSize.width(), newContextSize.height());
m_context->clearColor(0, 0, 0, 0);
m_context->clear(GraphicsContext3D::COLOR_BUFFER_BIT | GraphicsContext3D::DEPTH_BUFFER_BIT);
bindProgramAndBuffers(srcPixelArray.get());
m_context->drawElements(GraphicsContext3D::TRIANGLES, m_mesh->indicesCount(), GraphicsContext3D::UNSIGNED_SHORT, 0);
ASSERT(static_cast<size_t>(newContextSize.width() * newContextSize.height() * 4) == dstPixelArray->length());
m_context->readPixels(0, 0, newContextSize.width(), newContextSize.height(), GraphicsContext3D::RGBA, GraphicsContext3D::UNSIGNED_BYTE, dstPixelArray->data());
}