mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
114 lines
3.8 KiB
C++
114 lines
3.8 KiB
C++
/*
|
|
* Copyright 2012 Google Inc.
|
|
*
|
|
* Use of this source code is governed by a BSD-style license that can be
|
|
* found in the LICENSE file.
|
|
*/
|
|
|
|
|
|
#ifndef GrSurface_DEFINED
|
|
#define GrSurface_DEFINED
|
|
|
|
#include "GrTypes.h"
|
|
#include "GrResource.h"
|
|
|
|
class GrTexture;
|
|
class GrRenderTarget;
|
|
|
|
class GrSurface : public GrResource {
|
|
public:
|
|
SK_DECLARE_INST_COUNT(GrSurface);
|
|
|
|
/**
|
|
* Retrieves the width of the surface.
|
|
*
|
|
* @return the width in texels
|
|
*/
|
|
int width() const { return fDesc.fWidth; }
|
|
|
|
/**
|
|
* Retrieves the height of the surface.
|
|
*
|
|
* @return the height in texels
|
|
*/
|
|
int height() const { return fDesc.fHeight; }
|
|
|
|
/**
|
|
* Retrieves the pixel config specified when the surface was created.
|
|
* For render targets this can be kUnknown_GrPixelConfig
|
|
* if client asked us to render to a target that has a pixel
|
|
* config that isn't equivalent with one of our configs.
|
|
*/
|
|
GrPixelConfig config() const { return fDesc.fConfig; }
|
|
|
|
/**
|
|
* Return the descriptor describing the surface
|
|
*/
|
|
const GrTextureDesc& desc() const { return fDesc; }
|
|
|
|
/**
|
|
* @return the texture associated with the surface, may be NULL.
|
|
*/
|
|
virtual GrTexture* asTexture() = 0;
|
|
virtual const GrTexture* asTexture() const = 0;
|
|
|
|
/**
|
|
* @return the render target underlying this surface, may be NULL.
|
|
*/
|
|
virtual GrRenderTarget* asRenderTarget() = 0;
|
|
virtual const GrRenderTarget* asRenderTarget() const = 0;
|
|
|
|
/**
|
|
* Reads a rectangle of pixels from the surface.
|
|
* @param left left edge of the rectangle to read (inclusive)
|
|
* @param top top edge of the rectangle to read (inclusive)
|
|
* @param width width of rectangle to read in pixels.
|
|
* @param height height of rectangle to read in pixels.
|
|
* @param config the pixel config of the destination buffer
|
|
* @param buffer memory to read the rectangle into.
|
|
* @param rowBytes number of bytes bewtween consecutive rows. Zero means rows are tightly
|
|
* packed.
|
|
* @param pixelOpsFlags See the GrContext::PixelOpsFlags enum.
|
|
*
|
|
* @return true if the read succeeded, false if not. The read can fail because of an unsupported
|
|
* pixel config.
|
|
*/
|
|
virtual bool readPixels(int left, int top, int width, int height,
|
|
GrPixelConfig config,
|
|
void* buffer,
|
|
size_t rowBytes = 0,
|
|
uint32_t pixelOpsFlags = 0) = 0;
|
|
|
|
/**
|
|
* Copy the src pixels [buffer, rowbytes, pixelconfig] into the surface at the specified
|
|
* rectangle.
|
|
* @param left left edge of the rectangle to write (inclusive)
|
|
* @param top top edge of the rectangle to write (inclusive)
|
|
* @param width width of rectangle to write in pixels.
|
|
* @param height height of rectangle to write in pixels.
|
|
* @param config the pixel config of the source buffer
|
|
* @param buffer memory to read the rectangle from.
|
|
* @param rowBytes number of bytes bewtween consecutive rows. Zero means rows are tightly
|
|
* packed.
|
|
* @param pixelOpsFlags See the GrContext::PixelOpsFlags enum.
|
|
*/
|
|
virtual void writePixels(int left, int top, int width, int height,
|
|
GrPixelConfig config,
|
|
const void* buffer,
|
|
size_t rowBytes = 0,
|
|
uint32_t pixelOpsFlags = 0) = 0;
|
|
|
|
protected:
|
|
GrTextureDesc fDesc;
|
|
|
|
GrSurface(GrGpu* gpu, const GrTextureDesc& desc)
|
|
: INHERITED(gpu)
|
|
, fDesc(desc) {
|
|
}
|
|
|
|
private:
|
|
typedef GrResource INHERITED;
|
|
};
|
|
|
|
#endif // GrSurface_DEFINED
|