diff options
Diffstat (limited to 'include/gpu/GrRenderTarget.h')
| -rw-r--r-- | include/gpu/GrRenderTarget.h | 113 |
1 files changed, 50 insertions, 63 deletions
diff --git a/include/gpu/GrRenderTarget.h b/include/gpu/GrRenderTarget.h index c26ca4bb7e..d69e5cada9 100644 --- a/include/gpu/GrRenderTarget.h +++ b/include/gpu/GrRenderTarget.h @@ -19,7 +19,7 @@ #define GrRenderTarget_DEFINED #include "GrRect.h" -#include "GrResource.h" +#include "GrSurface.h" class GrStencilBuffer; class GrTexture; @@ -31,31 +31,63 @@ class GrTexture; * Additionally, GrContext provides methods for creating GrRenderTargets * that wrap externally created render targets. */ -class GrRenderTarget : public GrResource { +class GrRenderTarget : public GrSurface { public: SK_DECLARE_INST_COUNT(GrRenderTarget) + // GrResource overrides + virtual size_t sizeInBytes() const SK_OVERRIDE; + + // GrSurface overrides /** - * @return the width of the rendertarget + * @return the texture associated with the rendertarget, may be NULL. */ - int width() const { return fDesc.fWidth; } + virtual GrTexture* asTexture() SK_OVERRIDE { return fTexture; } + virtual const GrTexture* asTexture() const SK_OVERRIDE { return fTexture; } + /** - * @return the height of the rendertarget + * @return this render target. */ - int height() const { return fDesc.fHeight; } + virtual GrRenderTarget* asRenderTarget() SK_OVERRIDE { return this; } + virtual const GrRenderTarget* asRenderTarget() const SK_OVERRIDE { + return this; + } /** - * @return the pixel config. 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. + * Reads a rectangle of pixels from the render target. + * @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. + * + * @return true if the read succeeded, false if not. The read can fail + * because of an unsupported pixel config. */ - GrPixelConfig config() const { return fDesc.fConfig; } + virtual bool readPixels(int left, int top, int width, int height, + GrPixelConfig config, void* buffer, + size_t rowBytes) SK_OVERRIDE; /** - * @return the texture associated with the rendertarget, may be NULL. + * Copy the src pixels [buffer, rowbytes, pixelconfig] into the render + * target 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. */ - GrTexture* asTexture() {return fTexture;} + virtual void writePixels(int left, int top, int width, int height, + GrPixelConfig config, const void* buffer, + size_t rowBytes) SK_OVERRIDE; + // GrRenderTarget /** * If this RT is multisampled, this is the multisample buffer * @return the 3D API's handle to this object (e.g. FBO ID in OpenGL) @@ -71,7 +103,7 @@ public: virtual intptr_t getRenderTargetResolvedHandle() const = 0; /** - * @return true if the render target is multisampled, false otherwise + * @return true if the surface is multisampled, false otherwise */ bool isMultisampled() const { return 0 != fDesc.fSampleCnt; } @@ -121,41 +153,6 @@ public: */ void resolve(); - // GrResource overrides - virtual size_t sizeInBytes() const; - - /** - * Reads a rectangle of pixels from the render target. - * @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. - * - * @return true if the read succeeded, false if not. The read can fail - * because of an unsupported pixel config. - */ - bool readPixels(int left, int top, int width, int height, - GrPixelConfig config, void* buffer, size_t rowBytes); - - /** - * Copy the src pixels [buffer, rowbytes, pixelconfig] into the render - * target 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. - */ - void writePixels(int left, int top, int width, int height, - GrPixelConfig config, const void* buffer, size_t rowBytes); - // a MSAA RT may require explicit resolving , it may auto-resolve (e.g. FBO // 0 in GL), or be unresolvable because the client didn't give us the // resolve destination. @@ -175,26 +172,18 @@ public: protected: GrRenderTarget(GrGpu* gpu, GrTexture* texture, - int width, - int height, - GrPixelConfig config, - int sampleCnt) - : INHERITED(gpu) + const GrTextureDesc& desc) + : INHERITED(gpu, desc) , fStencilBuffer(NULL) , fTexture(texture) { fResolveRect.setLargestInverted(); - - fDesc.fWidth = width; - fDesc.fHeight = height; - fDesc.fConfig = config; - fDesc.fSampleCnt = sampleCnt; } friend class GrTexture; // When a texture unrefs an owned rendertarget this func - // removes the back pointer. This could be done called from + // removes the back pointer. This could be called from // texture's destructor but would have to be done in derived - // class. By the time of texture base destructor it has already + // classes. By the time of texture base destructor it has already // lost its pointer to the rt. void onTextureReleaseRenderTarget() { GrAssert(NULL != fTexture); @@ -205,11 +194,9 @@ private: GrStencilBuffer* fStencilBuffer; GrTexture* fTexture; // not ref'ed - GrTextureDesc fDesc; - GrIRect fResolveRect; - typedef GrResource INHERITED; + typedef GrSurface INHERITED; }; #endif |