michael@0: /*
michael@0:  * Copyright 2011 Google Inc.
michael@0:  *
michael@0:  * Use of this source code is governed by a BSD-style license that can be
michael@0:  * found in the LICENSE file.
michael@0:  */
michael@0: 
michael@0: #include "GrGLRenderTarget.h"
michael@0: 
michael@0: #include "GrGpuGL.h"
michael@0: 
michael@0: #define GPUGL static_cast<GrGpuGL*>(getGpu())
michael@0: 
michael@0: #define GL_CALL(X) GR_GL_CALL(GPUGL->glInterface(), X)
michael@0: 
michael@0: void GrGLRenderTarget::init(const Desc& desc,
michael@0:                             const GrGLIRect& viewport,
michael@0:                             GrGLTexID* texID) {
michael@0:     fRTFBOID                = desc.fRTFBOID;
michael@0:     fTexFBOID               = desc.fTexFBOID;
michael@0:     fMSColorRenderbufferID  = desc.fMSColorRenderbufferID;
michael@0:     fViewport               = viewport;
michael@0:     fTexIDObj.reset(SkSafeRef(texID));
michael@0: }
michael@0: 
michael@0: namespace {
michael@0: GrTextureDesc MakeDesc(GrTextureFlags flags,
michael@0:                        int width, int height,
michael@0:                        GrPixelConfig config, int sampleCnt,
michael@0:                        GrSurfaceOrigin origin) {
michael@0:     GrTextureDesc temp;
michael@0:     temp.fFlags = flags;
michael@0:     temp.fWidth = width;
michael@0:     temp.fHeight = height;
michael@0:     temp.fConfig = config;
michael@0:     temp.fSampleCnt = sampleCnt;
michael@0:     temp.fOrigin = origin;
michael@0:     return temp;
michael@0: }
michael@0: 
michael@0: };
michael@0: 
michael@0: GrGLRenderTarget::GrGLRenderTarget(GrGpuGL* gpu,
michael@0:                                    const Desc& desc,
michael@0:                                    const GrGLIRect& viewport,
michael@0:                                    GrGLTexID* texID,
michael@0:                                    GrGLTexture* texture)
michael@0:     : INHERITED(gpu,
michael@0:                 desc.fIsWrapped,
michael@0:                 texture,
michael@0:                 MakeDesc(kNone_GrTextureFlags,
michael@0:                          viewport.fWidth, viewport.fHeight,
michael@0:                          desc.fConfig, desc.fSampleCnt,
michael@0:                          desc.fOrigin)) {
michael@0:     SkASSERT(NULL != texID);
michael@0:     SkASSERT(NULL != texture);
michael@0:     // FBO 0 can't also be a texture, right?
michael@0:     SkASSERT(0 != desc.fRTFBOID);
michael@0:     SkASSERT(0 != desc.fTexFBOID);
michael@0: 
michael@0:     // we assume this is true, TODO: get rid of viewport as a param.
michael@0:     SkASSERT(viewport.fWidth == texture->width());
michael@0:     SkASSERT(viewport.fHeight == texture->height());
michael@0: 
michael@0:     this->init(desc, viewport, texID);
michael@0: }
michael@0: 
michael@0: GrGLRenderTarget::GrGLRenderTarget(GrGpuGL* gpu,
michael@0:                                    const Desc& desc,
michael@0:                                    const GrGLIRect& viewport)
michael@0:     : INHERITED(gpu,
michael@0:                 desc.fIsWrapped,
michael@0:                 NULL,
michael@0:                 MakeDesc(kNone_GrTextureFlags,
michael@0:                          viewport.fWidth, viewport.fHeight,
michael@0:                          desc.fConfig, desc.fSampleCnt,
michael@0:                          desc.fOrigin)) {
michael@0:     this->init(desc, viewport, NULL);
michael@0: }
michael@0: 
michael@0: void GrGLRenderTarget::onRelease() {
michael@0:     GPUGL->notifyRenderTargetDelete(this);
michael@0:     if (!this->isWrapped()) {
michael@0:         if (fTexFBOID) {
michael@0:             GL_CALL(DeleteFramebuffers(1, &fTexFBOID));
michael@0:         }
michael@0:         if (fRTFBOID && fRTFBOID != fTexFBOID) {
michael@0:             GL_CALL(DeleteFramebuffers(1, &fRTFBOID));
michael@0:         }
michael@0:         if (fMSColorRenderbufferID) {
michael@0:             GL_CALL(DeleteRenderbuffers(1, &fMSColorRenderbufferID));
michael@0:         }
michael@0:     }
michael@0:     fRTFBOID                = 0;
michael@0:     fTexFBOID               = 0;
michael@0:     fMSColorRenderbufferID  = 0;
michael@0:     fTexIDObj.reset(NULL);
michael@0:     INHERITED::onRelease();
michael@0: }
michael@0: 
michael@0: void GrGLRenderTarget::onAbandon() {
michael@0:     fRTFBOID                = 0;
michael@0:     fTexFBOID               = 0;
michael@0:     fMSColorRenderbufferID  = 0;
michael@0:     if (NULL != fTexIDObj.get()) {
michael@0:         fTexIDObj->abandon();
michael@0:         fTexIDObj.reset(NULL);
michael@0:     }
michael@0:     INHERITED::onAbandon();
michael@0: }