DrawingBufferCairo.cpp [plain text]
#include "config.h"
#if ENABLE(ACCELERATED_2D_CANVAS) || ENABLE(WEBGL)
#include "DrawingBuffer.h"
#include "Extensions3D.h"
namespace WebCore {
DrawingBuffer::DrawingBuffer(GraphicsContext3D* context,
const IntSize& size,
bool multisampleExtensionSupported,
bool packedDepthStencilExtensionSupported,
PreserveDrawingBuffer preserveDrawingBuffer,
AlphaRequirement alpha)
: m_preserveDrawingBuffer(preserveDrawingBuffer)
, m_alpha(alpha)
, m_scissorEnabled(false)
, m_texture2DBinding(0)
, m_framebufferBinding(0)
, m_activeTextureUnit(GraphicsContext3D::TEXTURE0)
, m_context(context)
, m_size(-1, -1)
, m_multisampleExtensionSupported(multisampleExtensionSupported)
, m_packedDepthStencilExtensionSupported(packedDepthStencilExtensionSupported)
, m_fbo(context->createFramebuffer())
, m_colorBuffer(0)
, m_frontColorBuffer(0)
, m_separateFrontTexture(false)
, m_depthStencilBuffer(0)
, m_depthBuffer(0)
, m_stencilBuffer(0)
, m_multisampleFBO(0)
, m_multisampleColorBuffer(0)
{
ASSERT(m_fbo);
if (!m_fbo) {
clear();
return;
}
m_colorBuffer = context->createTexture();
context->bindTexture(GraphicsContext3D::TEXTURE_2D, m_colorBuffer);
context->texParameterf(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D::TEXTURE_MAG_FILTER, GraphicsContext3D::LINEAR);
context->texParameterf(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D::TEXTURE_MIN_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);
context->bindTexture(GraphicsContext3D::TEXTURE_2D, 0);
createSecondaryBuffers();
reset(size);
}
DrawingBuffer::~DrawingBuffer()
{
clear();
}
#if USE(ACCELERATED_COMPOSITING)
void DrawingBuffer::prepareBackBuffer()
{
}
bool DrawingBuffer::requiresCopyFromBackToFrontBuffer() const
{
return false;
}
unsigned DrawingBuffer::frontColorBuffer() const
{
return colorBuffer();
}
void DrawingBuffer::paintCompositedResultsToCanvas(CanvasRenderingContext* context)
{
}
#endif
}
#endif