| |
| /* |
| * Copyright 2011 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "GrContext.h" |
| #include "GrDrawTargetCaps.h" |
| #include "GrGpu.h" |
| #include "GrResourceCache.h" |
| #include "GrTexture.h" |
| #include "GrTexturePriv.h" |
| |
| void GrTexture::dirtyMipMaps(bool mipMapsDirty) { |
| if (mipMapsDirty) { |
| if (kValid_MipMapsStatus == fMipMapsStatus) { |
| fMipMapsStatus = kAllocated_MipMapsStatus; |
| } |
| } else { |
| const bool sizeChanged = kNotAllocated_MipMapsStatus == fMipMapsStatus; |
| fMipMapsStatus = kValid_MipMapsStatus; |
| if (sizeChanged) { |
| // This must not be called until after changing fMipMapsStatus. |
| this->didChangeGpuMemorySize(); |
| } |
| } |
| } |
| |
| size_t GrTexture::gpuMemorySize() const { |
| size_t textureSize; |
| |
| if (GrPixelConfigIsCompressed(fDesc.fConfig)) { |
| textureSize = GrCompressedFormatDataSize(fDesc.fConfig, fDesc.fWidth, fDesc.fHeight); |
| } else { |
| textureSize = (size_t) fDesc.fWidth * fDesc.fHeight * GrBytesPerPixel(fDesc.fConfig); |
| } |
| |
| if (this->texturePriv().hasMipMaps()) { |
| // We don't have to worry about the mipmaps being a different size than |
| // we'd expect because we never change fDesc.fWidth/fHeight. |
| textureSize *= 2; |
| } |
| return textureSize; |
| } |
| |
| void GrTexture::validateDesc() const { |
| if (this->asRenderTarget()) { |
| // This texture has a render target |
| SkASSERT(0 != (fDesc.fFlags & kRenderTarget_GrSurfaceFlag)); |
| |
| if (this->asRenderTarget()->getStencilBuffer()) { |
| SkASSERT(0 != (fDesc.fFlags & kNoStencil_GrSurfaceFlag)); |
| } else { |
| SkASSERT(0 == (fDesc.fFlags & kNoStencil_GrSurfaceFlag)); |
| } |
| |
| SkASSERT(fDesc.fSampleCnt == this->asRenderTarget()->numSamples()); |
| } else { |
| SkASSERT(0 == (fDesc.fFlags & kRenderTarget_GrSurfaceFlag)); |
| SkASSERT(0 == (fDesc.fFlags & kNoStencil_GrSurfaceFlag)); |
| SkASSERT(0 == fDesc.fSampleCnt); |
| } |
| } |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| // These flags need to fit in a GrResourceKey::ResourceFlags so they can be folded into the texture |
| // key |
| enum TextureFlags { |
| /** |
| * The kStretchToPOT bit is set when the texture is NPOT and is being repeated but the |
| * hardware doesn't support that feature. |
| */ |
| kStretchToPOT_TextureFlag = 0x1, |
| /** |
| * The kBilerp bit can only be set when the kStretchToPOT flag is set and indicates whether the |
| * stretched texture should be bilerped. |
| */ |
| kBilerp_TextureFlag = 0x2, |
| }; |
| |
| namespace { |
| GrResourceKey::ResourceFlags get_texture_flags(const GrGpu* gpu, |
| const GrTextureParams* params, |
| const GrSurfaceDesc& desc) { |
| GrResourceKey::ResourceFlags flags = 0; |
| bool tiled = params && params->isTiled(); |
| if (tiled && !gpu->caps()->npotTextureTileSupport()) { |
| if (!SkIsPow2(desc.fWidth) || !SkIsPow2(desc.fHeight)) { |
| flags |= kStretchToPOT_TextureFlag; |
| switch(params->filterMode()) { |
| case GrTextureParams::kNone_FilterMode: |
| break; |
| case GrTextureParams::kBilerp_FilterMode: |
| case GrTextureParams::kMipMap_FilterMode: |
| flags |= kBilerp_TextureFlag; |
| break; |
| } |
| } |
| } |
| return flags; |
| } |
| |
| // FIXME: This should be refactored with the code in gl/GrGpuGL.cpp. |
| GrSurfaceOrigin resolve_origin(const GrSurfaceDesc& desc) { |
| // By default, GrRenderTargets are GL's normal orientation so that they |
| // can be drawn to by the outside world without the client having |
| // to render upside down. |
| bool renderTarget = 0 != (desc.fFlags & kRenderTarget_GrSurfaceFlag); |
| if (kDefault_GrSurfaceOrigin == desc.fOrigin) { |
| return renderTarget ? kBottomLeft_GrSurfaceOrigin : kTopLeft_GrSurfaceOrigin; |
| } else { |
| return desc.fOrigin; |
| } |
| } |
| } |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| GrTexture::GrTexture(GrGpu* gpu, bool isWrapped, const GrSurfaceDesc& desc) |
| : INHERITED(gpu, isWrapped, desc) |
| , fMipMapsStatus(kNotAllocated_MipMapsStatus) { |
| |
| if (!isWrapped) { |
| this->setScratchKey(GrTexturePriv::ComputeScratchKey(desc)); |
| } |
| // only make sense if alloc size is pow2 |
| fShiftFixedX = 31 - SkCLZ(fDesc.fWidth); |
| fShiftFixedY = 31 - SkCLZ(fDesc.fHeight); |
| } |
| |
| GrResourceKey GrTexturePriv::ComputeKey(const GrGpu* gpu, |
| const GrTextureParams* params, |
| const GrSurfaceDesc& desc, |
| const GrCacheID& cacheID) { |
| GrResourceKey::ResourceFlags flags = get_texture_flags(gpu, params, desc); |
| return GrResourceKey(cacheID, ResourceType(), flags); |
| } |
| |
| GrResourceKey GrTexturePriv::ComputeScratchKey(const GrSurfaceDesc& desc) { |
| GrCacheID::Key idKey; |
| // Instead of a client-provided key of the texture contents we create a key from the |
| // descriptor. |
| GR_STATIC_ASSERT(sizeof(idKey) >= 16); |
| SkASSERT(desc.fHeight < (1 << 16)); |
| SkASSERT(desc.fWidth < (1 << 16)); |
| idKey.fData32[0] = (desc.fWidth) | (desc.fHeight << 16); |
| idKey.fData32[1] = desc.fConfig | desc.fSampleCnt << 16; |
| idKey.fData32[2] = desc.fFlags; |
| idKey.fData32[3] = resolve_origin(desc); // Only needs 2 bits actually |
| static const int kPadSize = sizeof(idKey) - 16; |
| GR_STATIC_ASSERT(kPadSize >= 0); |
| memset(idKey.fData8 + 16, 0, kPadSize); |
| |
| GrCacheID cacheID(GrResourceKey::ScratchDomain(), idKey); |
| return GrResourceKey(cacheID, ResourceType(), 0); |
| } |
| |
| bool GrTexturePriv::NeedsResizing(const GrResourceKey& key) { |
| return SkToBool(key.getResourceFlags() & kStretchToPOT_TextureFlag); |
| } |
| |
| bool GrTexturePriv::NeedsBilerp(const GrResourceKey& key) { |
| return SkToBool(key.getResourceFlags() & kBilerp_TextureFlag); |
| } |