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      1 /*
      2  * Copyright 2011 Google Inc.
      3  *
      4  * Use of this source code is governed by a BSD-style license that can be
      5  * found in the LICENSE file.
      6  */
      7 
      8 #include "GrGLTexture.h"
      9 #include "GrGLGpu.h"
     10 #include "GrSemaphore.h"
     11 #include "GrShaderCaps.h"
     12 #include "SkTraceMemoryDump.h"
     13 
     14 #define GPUGL static_cast<GrGLGpu*>(this->getGpu())
     15 #define GL_CALL(X) GR_GL_CALL(GPUGL->glInterface(), X)
     16 
     17 static inline GrSLType sampler_type(const GrGLTexture::IDDesc& idDesc, GrPixelConfig config,
     18                                     const GrGLGpu* gpu) {
     19     if (idDesc.fInfo.fTarget == GR_GL_TEXTURE_EXTERNAL) {
     20         SkASSERT(gpu->caps()->shaderCaps()->externalTextureSupport());
     21         SkASSERT(!GrPixelConfigIsSint(config));
     22         return kTextureExternalSampler_GrSLType;
     23     } else if (idDesc.fInfo.fTarget == GR_GL_TEXTURE_RECTANGLE) {
     24         SkASSERT(gpu->glCaps().rectangleTextureSupport());
     25         SkASSERT(!GrPixelConfigIsSint(config));
     26         return kTexture2DRectSampler_GrSLType;
     27     } else if (GrPixelConfigIsSint(config)) {
     28         return kITexture2DSampler_GrSLType;
     29     } else {
     30         SkASSERT(idDesc.fInfo.fTarget == GR_GL_TEXTURE_2D);
     31         return kTexture2DSampler_GrSLType;
     32     }
     33 }
     34 
     35 // This method parallels GrTextureProxy::highestFilterMode
     36 static inline GrSamplerParams::FilterMode highest_filter_mode(const GrGLTexture::IDDesc& idDesc,
     37                                                               GrPixelConfig config) {
     38     if (GrPixelConfigIsSint(config)) {
     39         // Integer textures in GL can use GL_NEAREST_MIPMAP_NEAREST. This is a mode we don't support
     40         // and don't currently have a use for.
     41         return GrSamplerParams::kNone_FilterMode;
     42     }
     43     if (idDesc.fInfo.fTarget == GR_GL_TEXTURE_RECTANGLE ||
     44         idDesc.fInfo.fTarget == GR_GL_TEXTURE_EXTERNAL) {
     45         return GrSamplerParams::kBilerp_FilterMode;
     46     }
     47     return GrSamplerParams::kMipMap_FilterMode;
     48 }
     49 
     50 // Because this class is virtually derived from GrSurface we must explicitly call its constructor.
     51 GrGLTexture::GrGLTexture(GrGLGpu* gpu, SkBudgeted budgeted, const GrSurfaceDesc& desc,
     52                          const IDDesc& idDesc)
     53     : GrSurface(gpu, desc)
     54     , INHERITED(gpu, desc, sampler_type(idDesc, desc.fConfig, gpu),
     55                 highest_filter_mode(idDesc, desc.fConfig), false) {
     56     this->init(desc, idDesc);
     57     this->registerWithCache(budgeted);
     58 }
     59 
     60 GrGLTexture::GrGLTexture(GrGLGpu* gpu, SkBudgeted budgeted, const GrSurfaceDesc& desc,
     61                          const IDDesc& idDesc,
     62                          bool wasMipMapDataProvided)
     63     : GrSurface(gpu, desc)
     64     , INHERITED(gpu, desc, sampler_type(idDesc, desc.fConfig, gpu),
     65                 highest_filter_mode(idDesc, desc.fConfig),
     66                 wasMipMapDataProvided) {
     67     this->init(desc, idDesc);
     68     this->registerWithCache(budgeted);
     69 }
     70 
     71 GrGLTexture::GrGLTexture(GrGLGpu* gpu, Wrapped, const GrSurfaceDesc& desc, const IDDesc& idDesc)
     72     : GrSurface(gpu, desc)
     73     , INHERITED(gpu, desc, sampler_type(idDesc, desc.fConfig, gpu),
     74                 highest_filter_mode(idDesc, desc.fConfig), false) {
     75     this->init(desc, idDesc);
     76     this->registerWithCacheWrapped();
     77 }
     78 
     79 GrGLTexture::GrGLTexture(GrGLGpu* gpu, const GrSurfaceDesc& desc, const IDDesc& idDesc,
     80                          bool wasMipMapDataProvided)
     81     : GrSurface(gpu, desc)
     82     , INHERITED(gpu, desc, sampler_type(idDesc, desc.fConfig, gpu),
     83                 highest_filter_mode(idDesc, desc.fConfig),
     84                 wasMipMapDataProvided) {
     85     this->init(desc, idDesc);
     86 }
     87 
     88 void GrGLTexture::init(const GrSurfaceDesc& desc, const IDDesc& idDesc) {
     89     SkASSERT(0 != idDesc.fInfo.fID);
     90     fTexParams.invalidate();
     91     fTexParamsTimestamp = GrGpu::kExpiredTimestamp;
     92     fInfo = idDesc.fInfo;
     93     fTextureIDOwnership = idDesc.fOwnership;
     94 }
     95 
     96 void GrGLTexture::onRelease() {
     97     if (fInfo.fID) {
     98         if (GrBackendObjectOwnership::kBorrowed != fTextureIDOwnership) {
     99             GL_CALL(DeleteTextures(1, &fInfo.fID));
    100         }
    101         fInfo.fID = 0;
    102     }
    103     this->invokeReleaseProc();
    104     INHERITED::onRelease();
    105 }
    106 
    107 void GrGLTexture::onAbandon() {
    108     fInfo.fTarget = 0;
    109     fInfo.fID = 0;
    110     this->invokeReleaseProc();
    111     INHERITED::onAbandon();
    112 }
    113 
    114 GrBackendObject GrGLTexture::getTextureHandle() const {
    115     return reinterpret_cast<GrBackendObject>(&fInfo);
    116 }
    117 
    118 void GrGLTexture::setMemoryBacking(SkTraceMemoryDump* traceMemoryDump,
    119                                    const SkString& dumpName) const {
    120     SkString texture_id;
    121     texture_id.appendU32(this->textureID());
    122     traceMemoryDump->setMemoryBacking(dumpName.c_str(), "gl_texture",
    123                                       texture_id.c_str());
    124 }
    125 
    126 sk_sp<GrGLTexture> GrGLTexture::MakeWrapped(GrGLGpu* gpu, const GrSurfaceDesc& desc,
    127                                             const IDDesc& idDesc) {
    128     return sk_sp<GrGLTexture>(new GrGLTexture(gpu, kWrapped, desc, idDesc));
    129 }
    130 
    131