| |
| /* |
| * 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 "GrBufferAllocPool.h" |
| #include "GrClipIterator.h" |
| #include "GrContext.h" |
| #include "GrGpu.h" |
| #include "GrIndexBuffer.h" |
| #include "GrInOrderDrawBuffer.h" |
| #include "GrPathRenderer.h" |
| #include "GrPathUtils.h" |
| #include "GrResourceCache.h" |
| #include "GrStencilBuffer.h" |
| #include "GrTextStrike.h" |
| #include "SkTrace.h" |
| |
| // Using MSAA seems to be slower for some yet unknown reason. |
| #define PREFER_MSAA_OFFSCREEN_AA 0 |
| #define OFFSCREEN_SSAA_SCALE 4 // super sample at 4x4 |
| |
| #define DEFER_TEXT_RENDERING 1 |
| |
| #define BATCH_RECT_TO_RECT (1 && !GR_STATIC_RECT_VB) |
| |
| static const size_t MAX_TEXTURE_CACHE_COUNT = 256; |
| static const size_t MAX_TEXTURE_CACHE_BYTES = 16 * 1024 * 1024; |
| |
| static const size_t DRAW_BUFFER_VBPOOL_BUFFER_SIZE = 1 << 18; |
| static const int DRAW_BUFFER_VBPOOL_PREALLOC_BUFFERS = 4; |
| |
| // We are currently only batching Text and drawRectToRect, both |
| // of which use the quad index buffer. |
| static const size_t DRAW_BUFFER_IBPOOL_BUFFER_SIZE = 0; |
| static const int DRAW_BUFFER_IBPOOL_PREALLOC_BUFFERS = 0; |
| |
| GrContext* GrContext::Create(GrEngine engine, |
| GrPlatform3DContext context3D) { |
| GrContext* ctx = NULL; |
| GrGpu* fGpu = GrGpu::Create(engine, context3D); |
| if (NULL != fGpu) { |
| ctx = new GrContext(fGpu); |
| fGpu->unref(); |
| } |
| return ctx; |
| } |
| |
| GrContext* GrContext::CreateGLShaderContext() { |
| return GrContext::Create(kOpenGL_Shaders_GrEngine, 0); |
| } |
| |
| GrContext::~GrContext() { |
| this->flush(); |
| delete fTextureCache; |
| delete fFontCache; |
| delete fDrawBuffer; |
| delete fDrawBufferVBAllocPool; |
| delete fDrawBufferIBAllocPool; |
| |
| GrSafeUnref(fAAFillRectIndexBuffer); |
| GrSafeUnref(fAAStrokeRectIndexBuffer); |
| fGpu->unref(); |
| GrSafeUnref(fPathRendererChain); |
| } |
| |
| void GrContext::contextLost() { |
| contextDestroyed(); |
| this->setupDrawBuffer(); |
| } |
| |
| void GrContext::contextDestroyed() { |
| // abandon first to so destructors |
| // don't try to free the resources in the API. |
| fGpu->abandonResources(); |
| |
| // a path renderer may be holding onto resources that |
| // are now unusable |
| GrSafeSetNull(fPathRendererChain); |
| |
| delete fDrawBuffer; |
| fDrawBuffer = NULL; |
| |
| delete fDrawBufferVBAllocPool; |
| fDrawBufferVBAllocPool = NULL; |
| |
| delete fDrawBufferIBAllocPool; |
| fDrawBufferIBAllocPool = NULL; |
| |
| GrSafeSetNull(fAAFillRectIndexBuffer); |
| GrSafeSetNull(fAAStrokeRectIndexBuffer); |
| |
| fTextureCache->removeAll(); |
| fFontCache->freeAll(); |
| fGpu->markContextDirty(); |
| } |
| |
| void GrContext::resetContext() { |
| fGpu->markContextDirty(); |
| } |
| |
| void GrContext::freeGpuResources() { |
| this->flush(); |
| fTextureCache->removeAll(); |
| fFontCache->freeAll(); |
| // a path renderer may be holding onto resources |
| GrSafeSetNull(fPathRendererChain); |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| int GrContext::PaintStageVertexLayoutBits( |
| const GrPaint& paint, |
| const bool hasTexCoords[GrPaint::kTotalStages]) { |
| int stageMask = paint.getActiveStageMask(); |
| int layout = 0; |
| for (int i = 0; i < GrPaint::kTotalStages; ++i) { |
| if ((1 << i) & stageMask) { |
| if (NULL != hasTexCoords && hasTexCoords[i]) { |
| layout |= GrDrawTarget::StageTexCoordVertexLayoutBit(i, i); |
| } else { |
| layout |= GrDrawTarget::StagePosAsTexCoordVertexLayoutBit(i); |
| } |
| } |
| } |
| return layout; |
| } |
| |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| enum { |
| // flags for textures |
| kNPOTBit = 0x1, |
| kFilterBit = 0x2, |
| kScratchBit = 0x4, |
| |
| // resource type |
| kTextureBit = 0x8, |
| kStencilBufferBit = 0x10 |
| }; |
| |
| GrTexture* GrContext::TextureCacheEntry::texture() const { |
| if (NULL == fEntry) { |
| return NULL; |
| } else { |
| return (GrTexture*) fEntry->resource(); |
| } |
| } |
| |
| namespace { |
| // returns true if this is a "special" texture because of gpu NPOT limitations |
| bool gen_texture_key_values(const GrGpu* gpu, |
| const GrSamplerState& sampler, |
| GrContext::TextureKey clientKey, |
| int width, |
| int height, |
| bool scratch, |
| uint32_t v[4]) { |
| GR_STATIC_ASSERT(sizeof(GrContext::TextureKey) == sizeof(uint64_t)); |
| // we assume we only need 16 bits of width and height |
| // assert that texture creation will fail anyway if this assumption |
| // would cause key collisions. |
| GrAssert(gpu->maxTextureSize() <= SK_MaxU16); |
| v[0] = clientKey & 0xffffffffUL; |
| v[1] = (clientKey >> 32) & 0xffffffffUL; |
| v[2] = width | (height << 16); |
| |
| v[3] = 0; |
| if (!gpu->npotTextureTileSupport()) { |
| bool isPow2 = GrIsPow2(width) && GrIsPow2(height); |
| |
| bool tiled = (sampler.getWrapX() != GrSamplerState::kClamp_WrapMode) || |
| (sampler.getWrapY() != GrSamplerState::kClamp_WrapMode); |
| |
| if (tiled && !isPow2) { |
| v[3] |= kNPOTBit; |
| if (GrSamplerState::kNearest_Filter != sampler.getFilter()) { |
| v[3] |= kFilterBit; |
| } |
| } |
| } |
| |
| if (scratch) { |
| v[3] |= kScratchBit; |
| } |
| |
| v[3] |= kTextureBit; |
| |
| return v[3] & kNPOTBit; |
| } |
| |
| // we should never have more than one stencil buffer with same combo of |
| // (width,height,samplecount) |
| void gen_stencil_key_values(int width, int height, |
| int sampleCnt, uint32_t v[4]) { |
| v[0] = width; |
| v[1] = height; |
| v[2] = sampleCnt; |
| v[3] = kStencilBufferBit; |
| } |
| |
| void gen_stencil_key_values(const GrStencilBuffer* sb, |
| uint32_t v[4]) { |
| gen_stencil_key_values(sb->width(), sb->height(), |
| sb->numSamples(), v); |
| } |
| } |
| |
| GrContext::TextureCacheEntry GrContext::findAndLockTexture(TextureKey key, |
| int width, |
| int height, |
| const GrSamplerState& sampler) { |
| uint32_t v[4]; |
| gen_texture_key_values(fGpu, sampler, key, width, height, false, v); |
| GrResourceKey resourceKey(v); |
| return TextureCacheEntry(fTextureCache->findAndLock(resourceKey, |
| GrResourceCache::kNested_LockType)); |
| } |
| |
| GrResourceEntry* GrContext::addAndLockStencilBuffer(GrStencilBuffer* sb) { |
| uint32_t v[4]; |
| gen_stencil_key_values(sb, v); |
| GrResourceKey resourceKey(v); |
| return fTextureCache->createAndLock(resourceKey, sb); |
| } |
| |
| GrStencilBuffer* GrContext::findStencilBuffer(int width, int height, |
| int sampleCnt) { |
| uint32_t v[4]; |
| gen_stencil_key_values(width, height, sampleCnt, v); |
| GrResourceKey resourceKey(v); |
| GrResourceEntry* entry = fTextureCache->findAndLock(resourceKey, |
| GrResourceCache::kSingle_LockType); |
| if (NULL != entry) { |
| GrStencilBuffer* sb = (GrStencilBuffer*) entry->resource(); |
| return sb; |
| } else { |
| return NULL; |
| } |
| } |
| |
| void GrContext::unlockStencilBuffer(GrResourceEntry* sbEntry) { |
| fTextureCache->unlock(sbEntry); |
| } |
| |
| static void stretchImage(void* dst, |
| int dstW, |
| int dstH, |
| void* src, |
| int srcW, |
| int srcH, |
| int bpp) { |
| GrFixed dx = (srcW << 16) / dstW; |
| GrFixed dy = (srcH << 16) / dstH; |
| |
| GrFixed y = dy >> 1; |
| |
| int dstXLimit = dstW*bpp; |
| for (int j = 0; j < dstH; ++j) { |
| GrFixed x = dx >> 1; |
| void* srcRow = (uint8_t*)src + (y>>16)*srcW*bpp; |
| void* dstRow = (uint8_t*)dst + j*dstW*bpp; |
| for (int i = 0; i < dstXLimit; i += bpp) { |
| memcpy((uint8_t*) dstRow + i, |
| (uint8_t*) srcRow + (x>>16)*bpp, |
| bpp); |
| x += dx; |
| } |
| y += dy; |
| } |
| } |
| |
| GrContext::TextureCacheEntry GrContext::createAndLockTexture(TextureKey key, |
| const GrSamplerState& sampler, |
| const GrTextureDesc& desc, |
| void* srcData, size_t rowBytes) { |
| SK_TRACE_EVENT0("GrContext::createAndLockTexture"); |
| |
| #if GR_DUMP_TEXTURE_UPLOAD |
| GrPrintf("GrContext::createAndLockTexture [%d %d]\n", desc.fWidth, desc.fHeight); |
| #endif |
| |
| TextureCacheEntry entry; |
| uint32_t v[4]; |
| bool special = gen_texture_key_values(fGpu, sampler, key, |
| desc.fWidth, desc.fHeight, false, v); |
| GrResourceKey resourceKey(v); |
| |
| if (special) { |
| TextureCacheEntry clampEntry = |
| findAndLockTexture(key, desc.fWidth, desc.fHeight, |
| GrSamplerState::ClampNoFilter()); |
| |
| if (NULL == clampEntry.texture()) { |
| clampEntry = createAndLockTexture(key, |
| GrSamplerState::ClampNoFilter(), |
| desc, srcData, rowBytes); |
| GrAssert(NULL != clampEntry.texture()); |
| if (NULL == clampEntry.texture()) { |
| return entry; |
| } |
| } |
| GrTextureDesc rtDesc = desc; |
| rtDesc.fFlags = rtDesc.fFlags | |
| kRenderTarget_GrTextureFlagBit | |
| kNoStencil_GrTextureFlagBit; |
| rtDesc.fWidth = GrNextPow2(GrMax<int>(desc.fWidth, |
| fGpu->minRenderTargetWidth())); |
| rtDesc.fHeight = GrNextPow2(GrMax<int>(desc.fHeight, |
| fGpu->minRenderTargetHeight())); |
| |
| GrTexture* texture = fGpu->createTexture(rtDesc, NULL, 0); |
| |
| if (NULL != texture) { |
| GrDrawTarget::AutoStateRestore asr(fGpu); |
| fGpu->setRenderTarget(texture->asRenderTarget()); |
| fGpu->setTexture(0, clampEntry.texture()); |
| fGpu->disableStencil(); |
| fGpu->setViewMatrix(GrMatrix::I()); |
| fGpu->setAlpha(0xff); |
| fGpu->setBlendFunc(kOne_BlendCoeff, kZero_BlendCoeff); |
| fGpu->disableState(GrDrawTarget::kDither_StateBit | |
| GrDrawTarget::kClip_StateBit | |
| GrDrawTarget::kAntialias_StateBit); |
| GrSamplerState::Filter filter; |
| // if filtering is not desired then we want to ensure all |
| // texels in the resampled image are copies of texels from |
| // the original. |
| if (GrSamplerState::kNearest_Filter == sampler.getFilter()) { |
| filter = GrSamplerState::kNearest_Filter; |
| } else { |
| filter = GrSamplerState::kBilinear_Filter; |
| } |
| GrSamplerState stretchSampler(GrSamplerState::kClamp_WrapMode, |
| GrSamplerState::kClamp_WrapMode, |
| filter); |
| fGpu->setSamplerState(0, stretchSampler); |
| |
| static const GrVertexLayout layout = |
| GrDrawTarget::StageTexCoordVertexLayoutBit(0,0); |
| GrDrawTarget::AutoReleaseGeometry arg(fGpu, layout, 4, 0); |
| |
| if (arg.succeeded()) { |
| GrPoint* verts = (GrPoint*) arg.vertices(); |
| verts[0].setIRectFan(0, 0, |
| texture->width(), |
| texture->height(), |
| 2*sizeof(GrPoint)); |
| verts[1].setIRectFan(0, 0, 1, 1, 2*sizeof(GrPoint)); |
| fGpu->drawNonIndexed(kTriangleFan_PrimitiveType, |
| 0, 4); |
| entry.set(fTextureCache->createAndLock(resourceKey, texture)); |
| } |
| texture->releaseRenderTarget(); |
| } else { |
| // TODO: Our CPU stretch doesn't filter. But we create separate |
| // stretched textures when the sampler state is either filtered or |
| // not. Either implement filtered stretch blit on CPU or just create |
| // one when FBO case fails. |
| |
| rtDesc.fFlags = kNone_GrTextureFlags; |
| // no longer need to clamp at min RT size. |
| rtDesc.fWidth = GrNextPow2(desc.fWidth); |
| rtDesc.fHeight = GrNextPow2(desc.fHeight); |
| int bpp = GrBytesPerPixel(desc.fFormat); |
| SkAutoSMalloc<128*128*4> stretchedPixels(bpp * |
| rtDesc.fWidth * |
| rtDesc.fHeight); |
| stretchImage(stretchedPixels.get(), rtDesc.fWidth, rtDesc.fHeight, |
| srcData, desc.fWidth, desc.fHeight, bpp); |
| |
| size_t stretchedRowBytes = rtDesc.fWidth * bpp; |
| |
| GrTexture* texture = fGpu->createTexture(rtDesc, |
| stretchedPixels.get(), |
| stretchedRowBytes); |
| GrAssert(NULL != texture); |
| entry.set(fTextureCache->createAndLock(resourceKey, texture)); |
| } |
| fTextureCache->unlock(clampEntry.cacheEntry()); |
| |
| } else { |
| GrTexture* texture = fGpu->createTexture(desc, srcData, rowBytes); |
| if (NULL != texture) { |
| entry.set(fTextureCache->createAndLock(resourceKey, texture)); |
| } |
| } |
| return entry; |
| } |
| |
| namespace { |
| inline void gen_scratch_tex_key_values(const GrGpu* gpu, |
| const GrTextureDesc& desc, |
| uint32_t v[4]) { |
| // Instead of a client-provided key of the texture contents |
| // we create a key of from the descriptor. |
| GrContext::TextureKey descKey = desc.fAALevel | |
| (desc.fFlags << 8) | |
| ((uint64_t) desc.fFormat << 32); |
| // this code path isn't friendly to tiling with NPOT restricitons |
| // We just pass ClampNoFilter() |
| gen_texture_key_values(gpu, GrSamplerState::ClampNoFilter(), descKey, |
| desc.fWidth, desc.fHeight, true, v); |
| } |
| } |
| |
| GrContext::TextureCacheEntry GrContext::lockScratchTexture( |
| const GrTextureDesc& inDesc, |
| ScratchTexMatch match) { |
| |
| GrTextureDesc desc = inDesc; |
| if (kExact_ScratchTexMatch != match) { |
| // bin by pow2 with a reasonable min |
| static const int MIN_SIZE = 256; |
| desc.fWidth = GrMax(MIN_SIZE, GrNextPow2(desc.fWidth)); |
| desc.fHeight = GrMax(MIN_SIZE, GrNextPow2(desc.fHeight)); |
| } |
| |
| uint32_t p0 = desc.fFormat; |
| uint32_t p1 = (desc.fAALevel << 16) | desc.fFlags; |
| |
| GrResourceEntry* entry; |
| int origWidth = desc.fWidth; |
| int origHeight = desc.fHeight; |
| bool doubledW = false; |
| bool doubledH = false; |
| |
| do { |
| uint32_t v[4]; |
| gen_scratch_tex_key_values(fGpu, desc, v); |
| GrResourceKey key(v); |
| entry = fTextureCache->findAndLock(key, |
| GrResourceCache::kNested_LockType); |
| // if we miss, relax the fit of the flags... |
| // then try doubling width... then height. |
| if (NULL != entry || kExact_ScratchTexMatch == match) { |
| break; |
| } |
| if (!(desc.fFlags & kRenderTarget_GrTextureFlagBit)) { |
| desc.fFlags = desc.fFlags | kRenderTarget_GrTextureFlagBit; |
| } else if (desc.fFlags & kNoStencil_GrTextureFlagBit) { |
| desc.fFlags = desc.fFlags & ~kNoStencil_GrTextureFlagBit; |
| } else if (!doubledW) { |
| desc.fFlags = inDesc.fFlags; |
| desc.fWidth *= 2; |
| doubledW = true; |
| } else if (!doubledH) { |
| desc.fFlags = inDesc.fFlags; |
| desc.fWidth = origWidth; |
| desc.fHeight *= 2; |
| doubledH = true; |
| } else { |
| break; |
| } |
| |
| } while (true); |
| |
| if (NULL == entry) { |
| desc.fFlags = inDesc.fFlags; |
| desc.fWidth = origWidth; |
| desc.fHeight = origHeight; |
| GrTexture* texture = fGpu->createTexture(desc, NULL, 0); |
| if (NULL != texture) { |
| uint32_t v[4]; |
| gen_scratch_tex_key_values(fGpu, desc, v); |
| GrResourceKey key(v); |
| entry = fTextureCache->createAndLock(key, texture); |
| } |
| } |
| |
| // If the caller gives us the same desc/sampler twice we don't want |
| // to return the same texture the second time (unless it was previously |
| // released). So we detach the entry from the cache and reattach at release. |
| if (NULL != entry) { |
| fTextureCache->detach(entry); |
| } |
| return TextureCacheEntry(entry); |
| } |
| |
| void GrContext::unlockTexture(TextureCacheEntry entry) { |
| // If this is a scratch texture we detached it from the cache |
| // while it was locked (to avoid two callers simultaneously getting |
| // the same texture). |
| if (kScratchBit & entry.cacheEntry()->key().getValue32(3)) { |
| fTextureCache->reattachAndUnlock(entry.cacheEntry()); |
| } else { |
| fTextureCache->unlock(entry.cacheEntry()); |
| } |
| } |
| |
| GrTexture* GrContext::createUncachedTexture(const GrTextureDesc& desc, |
| void* srcData, |
| size_t rowBytes) { |
| return fGpu->createTexture(desc, srcData, rowBytes); |
| } |
| |
| void GrContext::getTextureCacheLimits(int* maxTextures, |
| size_t* maxTextureBytes) const { |
| fTextureCache->getLimits(maxTextures, maxTextureBytes); |
| } |
| |
| void GrContext::setTextureCacheLimits(int maxTextures, size_t maxTextureBytes) { |
| fTextureCache->setLimits(maxTextures, maxTextureBytes); |
| } |
| |
| int GrContext::getMaxTextureSize() const { |
| return fGpu->maxTextureSize(); |
| } |
| |
| int GrContext::getMaxRenderTargetSize() const { |
| return fGpu->maxRenderTargetSize(); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| GrResource* GrContext::createPlatformSurface(const GrPlatformSurfaceDesc& desc) { |
| // validate flags here so that GrGpu subclasses don't have to check |
| if (kTexture_GrPlatformSurfaceType == desc.fSurfaceType && |
| 0 != desc.fRenderTargetFlags) { |
| return NULL; |
| } |
| #if !GR_USE_PLATFORM_CREATE_SAMPLE_COUNT |
| if (!(kIsMultisampled_GrPlatformRenderTargetFlagBit & desc.fRenderTargetFlags) && |
| (kGrCanResolve_GrPlatformRenderTargetFlagBit & desc.fRenderTargetFlags)) { |
| return NULL; |
| } |
| if (kTextureRenderTarget_GrPlatformSurfaceType == desc.fSurfaceType && |
| (kIsMultisampled_GrPlatformRenderTargetFlagBit & desc.fRenderTargetFlags) && |
| !(kGrCanResolve_GrPlatformRenderTargetFlagBit & desc.fRenderTargetFlags)) { |
| return NULL; |
| } |
| #else |
| if (desc.fSampleCnt && |
| (kGrCanResolve_GrPlatformRenderTargetFlagBit & desc.fRenderTargetFlags)) { |
| return NULL; |
| } |
| if (kTextureRenderTarget_GrPlatformSurfaceType == desc.fSurfaceType && |
| desc.fSampleCnt && |
| !(kGrCanResolve_GrPlatformRenderTargetFlagBit & desc.fRenderTargetFlags)) { |
| return NULL; |
| } |
| #endif |
| return fGpu->createPlatformSurface(desc); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| bool GrContext::supportsIndex8PixelConfig(const GrSamplerState& sampler, |
| int width, int height) { |
| if (!fGpu->supports8BitPalette()) { |
| return false; |
| } |
| |
| |
| bool isPow2 = GrIsPow2(width) && GrIsPow2(height); |
| |
| if (!isPow2) { |
| if (!fGpu->npotTextureSupport()) { |
| return false; |
| } |
| |
| bool tiled = sampler.getWrapX() != GrSamplerState::kClamp_WrapMode || |
| sampler.getWrapY() != GrSamplerState::kClamp_WrapMode; |
| if (tiled && !fGpu->npotTextureTileSupport()) { |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| const GrClip& GrContext::getClip() const { return fGpu->getClip(); } |
| |
| void GrContext::setClip(const GrClip& clip) { |
| fGpu->setClip(clip); |
| fGpu->enableState(GrDrawTarget::kClip_StateBit); |
| } |
| |
| void GrContext::setClip(const GrIRect& rect) { |
| GrClip clip; |
| clip.setFromIRect(rect); |
| fGpu->setClip(clip); |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| void GrContext::clear(const GrIRect* rect, const GrColor color) { |
| this->flush(); |
| fGpu->clear(rect, color); |
| } |
| |
| void GrContext::drawPaint(const GrPaint& paint) { |
| // set rect to be big enough to fill the space, but not super-huge, so we |
| // don't overflow fixed-point implementations |
| GrRect r; |
| r.setLTRB(0, 0, |
| GrIntToScalar(getRenderTarget()->width()), |
| GrIntToScalar(getRenderTarget()->height())); |
| GrMatrix inverse; |
| if (fGpu->getViewInverse(&inverse)) { |
| inverse.mapRect(&r); |
| } else { |
| GrPrintf("---- fGpu->getViewInverse failed\n"); |
| } |
| this->drawRect(paint, r); |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| struct GrContext::OffscreenRecord { |
| enum Downsample { |
| k4x4TwoPass_Downsample, |
| k4x4SinglePass_Downsample, |
| kFSAA_Downsample |
| } fDownsample; |
| int fTileSizeX; |
| int fTileSizeY; |
| int fTileCountX; |
| int fTileCountY; |
| int fScale; |
| GrAutoScratchTexture fOffscreen0; |
| GrAutoScratchTexture fOffscreen1; |
| GrDrawTarget::SavedDrawState fSavedState; |
| GrClip fClip; |
| }; |
| |
| bool GrContext::doOffscreenAA(GrDrawTarget* target, |
| const GrPaint& paint, |
| bool isLines) const { |
| #if !GR_USE_OFFSCREEN_AA |
| return false; |
| #else |
| if (!paint.fAntiAlias) { |
| return false; |
| } |
| if (isLines && fGpu->supportsAALines()) { |
| return false; |
| } |
| if (target->getRenderTarget()->isMultisampled()) { |
| return false; |
| } |
| // we have to be sure that the blend equation is expressible |
| // as simple src / dst coeffecients when the source |
| // is already modulated by the coverage fraction. |
| // We could use dual-source blending to get the correct per-pixel |
| // dst coeffecient for the remaining cases. |
| if (kISC_BlendCoeff != paint.fDstBlendCoeff && |
| kOne_BlendCoeff != paint.fDstBlendCoeff && |
| kISA_BlendCoeff != paint.fDstBlendCoeff) { |
| return false; |
| } |
| return true; |
| #endif |
| } |
| |
| bool GrContext::prepareForOffscreenAA(GrDrawTarget* target, |
| bool requireStencil, |
| const GrIRect& boundRect, |
| GrPathRenderer* pr, |
| OffscreenRecord* record) { |
| |
| GrAssert(GR_USE_OFFSCREEN_AA); |
| |
| GrAssert(NULL == record->fOffscreen0.texture()); |
| GrAssert(NULL == record->fOffscreen1.texture()); |
| GrAssert(!boundRect.isEmpty()); |
| |
| int boundW = boundRect.width(); |
| int boundH = boundRect.height(); |
| |
| GrTextureDesc desc; |
| |
| desc.fWidth = GrMin(fMaxOffscreenAASize, boundW); |
| desc.fHeight = GrMin(fMaxOffscreenAASize, boundH); |
| |
| if (requireStencil) { |
| desc.fFlags = kRenderTarget_GrTextureFlagBit; |
| } else { |
| desc.fFlags = kRenderTarget_GrTextureFlagBit | |
| kNoStencil_GrTextureFlagBit; |
| } |
| |
| desc.fFormat = kRGBA_8888_GrPixelConfig; |
| |
| if (PREFER_MSAA_OFFSCREEN_AA && fGpu->supportsFullsceneAA()) { |
| record->fDownsample = OffscreenRecord::kFSAA_Downsample; |
| record->fScale = 1; |
| desc.fAALevel = kMed_GrAALevel; |
| } else { |
| record->fDownsample = (fGpu->supports4x4DownsampleFilter()) ? |
| OffscreenRecord::k4x4SinglePass_Downsample : |
| OffscreenRecord::k4x4TwoPass_Downsample; |
| record->fScale = OFFSCREEN_SSAA_SCALE; |
| // both downsample paths assume this |
| GR_STATIC_ASSERT(4 == OFFSCREEN_SSAA_SCALE); |
| desc.fAALevel = kNone_GrAALevel; |
| } |
| // Avoid overtesselating paths in AA buffers; may unduly reduce quality |
| // of simple circles? |
| if (pr) { |
| //pr->scaleCurveTolerance(GrIntToScalar(record->fScale)); |
| } |
| |
| desc.fWidth *= record->fScale; |
| desc.fHeight *= record->fScale; |
| record->fOffscreen0.set(this, desc); |
| if (NULL == record->fOffscreen0.texture()) { |
| return false; |
| } |
| // the approximate lookup might have given us some slop space, might as well |
| // use it when computing the tiles size. |
| // these are scale values, will adjust after considering |
| // the possible second offscreen. |
| record->fTileSizeX = record->fOffscreen0.texture()->width(); |
| record->fTileSizeY = record->fOffscreen0.texture()->height(); |
| |
| if (OffscreenRecord::k4x4TwoPass_Downsample == record->fDownsample) { |
| desc.fWidth /= 2; |
| desc.fHeight /= 2; |
| record->fOffscreen1.set(this, desc); |
| if (NULL == record->fOffscreen1.texture()) { |
| return false; |
| } |
| record->fTileSizeX = GrMin(record->fTileSizeX, |
| 2 * record->fOffscreen0.texture()->width()); |
| record->fTileSizeY = GrMin(record->fTileSizeY, |
| 2 * record->fOffscreen0.texture()->height()); |
| } |
| record->fTileSizeX /= record->fScale; |
| record->fTileSizeY /= record->fScale; |
| |
| record->fTileCountX = GrIDivRoundUp(boundW, record->fTileSizeX); |
| record->fTileCountY = GrIDivRoundUp(boundH, record->fTileSizeY); |
| |
| record->fClip = target->getClip(); |
| |
| target->saveCurrentDrawState(&record->fSavedState); |
| return true; |
| } |
| |
| void GrContext::setupOffscreenAAPass1(GrDrawTarget* target, |
| const GrIRect& boundRect, |
| int tileX, int tileY, |
| OffscreenRecord* record) { |
| |
| GrRenderTarget* offRT0 = record->fOffscreen0.texture()->asRenderTarget(); |
| GrAssert(NULL != offRT0); |
| |
| GrPaint tempPaint; |
| tempPaint.reset(); |
| SetPaint(tempPaint, target); |
| target->setRenderTarget(offRT0); |
| |
| GrMatrix transM; |
| int left = boundRect.fLeft + tileX * record->fTileSizeX; |
| int top = boundRect.fTop + tileY * record->fTileSizeY; |
| transM.setTranslate(-left * GR_Scalar1, -top * GR_Scalar1); |
| target->postConcatViewMatrix(transM); |
| GrMatrix scaleM; |
| scaleM.setScale(record->fScale * GR_Scalar1, record->fScale * GR_Scalar1); |
| target->postConcatViewMatrix(scaleM); |
| |
| int w = (tileX == record->fTileCountX-1) ? boundRect.fRight - left : |
| record->fTileSizeX; |
| int h = (tileY == record->fTileCountY-1) ? boundRect.fBottom - top : |
| record->fTileSizeY; |
| GrIRect clear = SkIRect::MakeWH(record->fScale * w, |
| record->fScale * h); |
| target->setClip(GrClip(clear)); |
| #if 0 |
| // visualize tile boundaries by setting edges of offscreen to white |
| // and interior to tranparent. black. |
| target->clear(&clear, 0xffffffff); |
| |
| static const int gOffset = 2; |
| GrIRect clear2 = SkIRect::MakeLTRB(gOffset, gOffset, |
| record->fScale * w - gOffset, |
| record->fScale * h - gOffset); |
| target->clear(&clear2, 0x0); |
| #else |
| target->clear(&clear, 0x0); |
| #endif |
| } |
| |
| void GrContext::doOffscreenAAPass2(GrDrawTarget* target, |
| const GrPaint& paint, |
| const GrIRect& boundRect, |
| int tileX, int tileY, |
| OffscreenRecord* record) { |
| SK_TRACE_EVENT0("GrContext::doOffscreenAAPass2"); |
| GrAssert(NULL != record->fOffscreen0.texture()); |
| GrDrawTarget::AutoGeometryPush agp(target); |
| GrIRect tileRect; |
| tileRect.fLeft = boundRect.fLeft + tileX * record->fTileSizeX; |
| tileRect.fTop = boundRect.fTop + tileY * record->fTileSizeY, |
| tileRect.fRight = (tileX == record->fTileCountX-1) ? |
| boundRect.fRight : |
| tileRect.fLeft + record->fTileSizeX; |
| tileRect.fBottom = (tileY == record->fTileCountY-1) ? |
| boundRect.fBottom : |
| tileRect.fTop + record->fTileSizeY; |
| |
| GrSamplerState::Filter filter; |
| if (OffscreenRecord::k4x4SinglePass_Downsample == record->fDownsample) { |
| filter = GrSamplerState::k4x4Downsample_Filter; |
| } else { |
| filter = GrSamplerState::kBilinear_Filter; |
| } |
| |
| GrMatrix sampleM; |
| GrSamplerState sampler(GrSamplerState::kClamp_WrapMode, |
| GrSamplerState::kClamp_WrapMode, filter); |
| |
| GrTexture* src = record->fOffscreen0.texture(); |
| int scale; |
| |
| enum { |
| kOffscreenStage = GrPaint::kTotalStages, |
| }; |
| |
| if (OffscreenRecord::k4x4TwoPass_Downsample == record->fDownsample) { |
| GrAssert(NULL != record->fOffscreen1.texture()); |
| scale = 2; |
| GrRenderTarget* dst = record->fOffscreen1.texture()->asRenderTarget(); |
| |
| // Do 2x2 downsample from first to second |
| target->setTexture(kOffscreenStage, src); |
| target->setRenderTarget(dst); |
| target->setViewMatrix(GrMatrix::I()); |
| sampleM.setScale(scale * GR_Scalar1 / src->width(), |
| scale * GR_Scalar1 / src->height()); |
| sampler.setMatrix(sampleM); |
| target->setSamplerState(kOffscreenStage, sampler); |
| GrRect rect = SkRect::MakeWH(scale * tileRect.width(), |
| scale * tileRect.height()); |
| target->drawSimpleRect(rect, NULL, 1 << kOffscreenStage); |
| |
| src = record->fOffscreen1.texture(); |
| } else if (OffscreenRecord::kFSAA_Downsample == record->fDownsample) { |
| scale = 1; |
| GrIRect rect = SkIRect::MakeWH(tileRect.width(), tileRect.height()); |
| src->asRenderTarget()->overrideResolveRect(rect); |
| } else { |
| GrAssert(OffscreenRecord::k4x4SinglePass_Downsample == |
| record->fDownsample); |
| scale = 4; |
| } |
| |
| // setup for draw back to main RT, we use the original |
| // draw state setup by the caller plus an additional coverage |
| // stage to handle the AA resolve. Also, we use an identity |
| // view matrix and so pre-concat sampler matrices with view inv. |
| int stageMask = paint.getActiveStageMask(); |
| |
| target->restoreDrawState(record->fSavedState); |
| target->setClip(record->fClip); |
| |
| if (stageMask) { |
| GrMatrix invVM; |
| if (target->getViewInverse(&invVM)) { |
| target->preConcatSamplerMatrices(stageMask, invVM); |
| } |
| } |
| // This is important when tiling, otherwise second tile's |
| // pass 1 view matrix will be incorrect. |
| GrDrawTarget::AutoViewMatrixRestore avmr(target); |
| |
| target->setViewMatrix(GrMatrix::I()); |
| |
| target->setTexture(kOffscreenStage, src); |
| sampleM.setScale(scale * GR_Scalar1 / src->width(), |
| scale * GR_Scalar1 / src->height()); |
| sampler.setMatrix(sampleM); |
| sampleM.setTranslate(-tileRect.fLeft, -tileRect.fTop); |
| sampler.preConcatMatrix(sampleM); |
| target->setSamplerState(kOffscreenStage, sampler); |
| |
| GrRect dstRect; |
| int stages = (1 << kOffscreenStage) | stageMask; |
| dstRect.set(tileRect); |
| target->drawSimpleRect(dstRect, NULL, stages); |
| } |
| |
| void GrContext::cleanupOffscreenAA(GrDrawTarget* target, |
| GrPathRenderer* pr, |
| OffscreenRecord* record) { |
| if (pr) { |
| // Counterpart of scale() in prepareForOffscreenAA() |
| //pr->scaleCurveTolerance(SkScalarInvert(SkIntToScalar(record->fScale))); |
| } |
| target->restoreDrawState(record->fSavedState); |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| /* create a triangle strip that strokes the specified triangle. There are 8 |
| unique vertices, but we repreat the last 2 to close up. Alternatively we |
| could use an indices array, and then only send 8 verts, but not sure that |
| would be faster. |
| */ |
| static void setStrokeRectStrip(GrPoint verts[10], GrRect rect, |
| GrScalar width) { |
| const GrScalar rad = GrScalarHalf(width); |
| rect.sort(); |
| |
| verts[0].set(rect.fLeft + rad, rect.fTop + rad); |
| verts[1].set(rect.fLeft - rad, rect.fTop - rad); |
| verts[2].set(rect.fRight - rad, rect.fTop + rad); |
| verts[3].set(rect.fRight + rad, rect.fTop - rad); |
| verts[4].set(rect.fRight - rad, rect.fBottom - rad); |
| verts[5].set(rect.fRight + rad, rect.fBottom + rad); |
| verts[6].set(rect.fLeft + rad, rect.fBottom - rad); |
| verts[7].set(rect.fLeft - rad, rect.fBottom + rad); |
| verts[8] = verts[0]; |
| verts[9] = verts[1]; |
| } |
| |
| static GrColor getColorForMesh(const GrPaint& paint) { |
| // FIXME: This was copied from SkGpuDevice, seems like |
| // we should have already smeared a in caller if that |
| // is what is desired. |
| if (paint.hasTexture()) { |
| unsigned a = GrColorUnpackA(paint.fColor); |
| return GrColorPackRGBA(a, a, a, a); |
| } else { |
| return paint.fColor; |
| } |
| } |
| |
| static void setInsetFan(GrPoint* pts, size_t stride, |
| const GrRect& r, GrScalar dx, GrScalar dy) { |
| pts->setRectFan(r.fLeft + dx, r.fTop + dy, r.fRight - dx, r.fBottom - dy, stride); |
| } |
| |
| static const uint16_t gFillAARectIdx[] = { |
| 0, 1, 5, 5, 4, 0, |
| 1, 2, 6, 6, 5, 1, |
| 2, 3, 7, 7, 6, 2, |
| 3, 0, 4, 4, 7, 3, |
| 4, 5, 6, 6, 7, 4, |
| }; |
| |
| int GrContext::aaFillRectIndexCount() const { |
| return GR_ARRAY_COUNT(gFillAARectIdx); |
| } |
| |
| GrIndexBuffer* GrContext::aaFillRectIndexBuffer() { |
| if (NULL == fAAFillRectIndexBuffer) { |
| fAAFillRectIndexBuffer = fGpu->createIndexBuffer(sizeof(gFillAARectIdx), |
| false); |
| GrAssert(NULL != fAAFillRectIndexBuffer); |
| #if GR_DEBUG |
| bool updated = |
| #endif |
| fAAFillRectIndexBuffer->updateData(gFillAARectIdx, |
| sizeof(gFillAARectIdx)); |
| GR_DEBUGASSERT(updated); |
| } |
| return fAAFillRectIndexBuffer; |
| } |
| |
| static const uint16_t gStrokeAARectIdx[] = { |
| 0 + 0, 1 + 0, 5 + 0, 5 + 0, 4 + 0, 0 + 0, |
| 1 + 0, 2 + 0, 6 + 0, 6 + 0, 5 + 0, 1 + 0, |
| 2 + 0, 3 + 0, 7 + 0, 7 + 0, 6 + 0, 2 + 0, |
| 3 + 0, 0 + 0, 4 + 0, 4 + 0, 7 + 0, 3 + 0, |
| |
| 0 + 4, 1 + 4, 5 + 4, 5 + 4, 4 + 4, 0 + 4, |
| 1 + 4, 2 + 4, 6 + 4, 6 + 4, 5 + 4, 1 + 4, |
| 2 + 4, 3 + 4, 7 + 4, 7 + 4, 6 + 4, 2 + 4, |
| 3 + 4, 0 + 4, 4 + 4, 4 + 4, 7 + 4, 3 + 4, |
| |
| 0 + 8, 1 + 8, 5 + 8, 5 + 8, 4 + 8, 0 + 8, |
| 1 + 8, 2 + 8, 6 + 8, 6 + 8, 5 + 8, 1 + 8, |
| 2 + 8, 3 + 8, 7 + 8, 7 + 8, 6 + 8, 2 + 8, |
| 3 + 8, 0 + 8, 4 + 8, 4 + 8, 7 + 8, 3 + 8, |
| }; |
| |
| int GrContext::aaStrokeRectIndexCount() const { |
| return GR_ARRAY_COUNT(gStrokeAARectIdx); |
| } |
| |
| GrIndexBuffer* GrContext::aaStrokeRectIndexBuffer() { |
| if (NULL == fAAStrokeRectIndexBuffer) { |
| fAAStrokeRectIndexBuffer = fGpu->createIndexBuffer(sizeof(gStrokeAARectIdx), |
| false); |
| GrAssert(NULL != fAAStrokeRectIndexBuffer); |
| #if GR_DEBUG |
| bool updated = |
| #endif |
| fAAStrokeRectIndexBuffer->updateData(gStrokeAARectIdx, |
| sizeof(gStrokeAARectIdx)); |
| GR_DEBUGASSERT(updated); |
| } |
| return fAAStrokeRectIndexBuffer; |
| } |
| |
| void GrContext::fillAARect(GrDrawTarget* target, |
| const GrPaint& paint, |
| const GrRect& devRect) { |
| GrVertexLayout layout = PaintStageVertexLayoutBits(paint, NULL) | |
| GrDrawTarget::kColor_VertexLayoutBit; |
| |
| size_t vsize = GrDrawTarget::VertexSize(layout); |
| |
| GrDrawTarget::AutoReleaseGeometry geo(target, layout, 8, 0); |
| if (!geo.succeeded()) { |
| GrPrintf("Failed to get space for vertices!\n"); |
| return; |
| } |
| |
| intptr_t verts = reinterpret_cast<intptr_t>(geo.vertices()); |
| |
| GrPoint* fan0Pos = reinterpret_cast<GrPoint*>(verts); |
| GrPoint* fan1Pos = reinterpret_cast<GrPoint*>(verts + 4 * vsize); |
| |
| setInsetFan(fan0Pos, vsize, devRect, -GR_ScalarHalf, -GR_ScalarHalf); |
| setInsetFan(fan1Pos, vsize, devRect, GR_ScalarHalf, GR_ScalarHalf); |
| |
| verts += sizeof(GrPoint); |
| for (int i = 0; i < 4; ++i) { |
| *reinterpret_cast<GrColor*>(verts + i * vsize) = 0; |
| } |
| |
| GrColor innerColor = getColorForMesh(paint); |
| verts += 4 * vsize; |
| for (int i = 0; i < 4; ++i) { |
| *reinterpret_cast<GrColor*>(verts + i * vsize) = innerColor; |
| } |
| |
| target->setIndexSourceToBuffer(this->aaFillRectIndexBuffer()); |
| |
| target->drawIndexed(kTriangles_PrimitiveType, 0, |
| 0, 8, this->aaFillRectIndexCount()); |
| } |
| |
| void GrContext::strokeAARect(GrDrawTarget* target, const GrPaint& paint, |
| const GrRect& devRect, const GrVec& devStrokeSize) { |
| const GrScalar& dx = devStrokeSize.fX; |
| const GrScalar& dy = devStrokeSize.fY; |
| const GrScalar rx = GrMul(dx, GR_ScalarHalf); |
| const GrScalar ry = GrMul(dy, GR_ScalarHalf); |
| |
| GrVertexLayout layout = PaintStageVertexLayoutBits(paint, NULL) | |
| GrDrawTarget::kColor_VertexLayoutBit; |
| |
| GrScalar spare; |
| { |
| GrScalar w = devRect.width() - dx; |
| GrScalar h = devRect.height() - dy; |
| spare = GrMin(w, h); |
| } |
| |
| if (spare <= 0) { |
| GrRect r(devRect); |
| r.inset(-rx, -ry); |
| fillAARect(target, paint, r); |
| return; |
| } |
| |
| size_t vsize = GrDrawTarget::VertexSize(layout); |
| |
| GrDrawTarget::AutoReleaseGeometry geo(target, layout, 16, 0); |
| if (!geo.succeeded()) { |
| GrPrintf("Failed to get space for vertices!\n"); |
| return; |
| } |
| |
| intptr_t verts = reinterpret_cast<intptr_t>(geo.vertices()); |
| |
| GrPoint* fan0Pos = reinterpret_cast<GrPoint*>(verts); |
| GrPoint* fan1Pos = reinterpret_cast<GrPoint*>(verts + 4 * vsize); |
| GrPoint* fan2Pos = reinterpret_cast<GrPoint*>(verts + 8 * vsize); |
| GrPoint* fan3Pos = reinterpret_cast<GrPoint*>(verts + 12 * vsize); |
| |
| setInsetFan(fan0Pos, vsize, devRect, -rx - GR_ScalarHalf, -ry - GR_ScalarHalf); |
| setInsetFan(fan1Pos, vsize, devRect, -rx + GR_ScalarHalf, -ry + GR_ScalarHalf); |
| setInsetFan(fan2Pos, vsize, devRect, rx - GR_ScalarHalf, ry - GR_ScalarHalf); |
| setInsetFan(fan3Pos, vsize, devRect, rx + GR_ScalarHalf, ry + GR_ScalarHalf); |
| |
| verts += sizeof(GrPoint); |
| for (int i = 0; i < 4; ++i) { |
| *reinterpret_cast<GrColor*>(verts + i * vsize) = 0; |
| } |
| |
| GrColor innerColor = getColorForMesh(paint); |
| verts += 4 * vsize; |
| for (int i = 0; i < 8; ++i) { |
| *reinterpret_cast<GrColor*>(verts + i * vsize) = innerColor; |
| } |
| |
| verts += 8 * vsize; |
| for (int i = 0; i < 8; ++i) { |
| *reinterpret_cast<GrColor*>(verts + i * vsize) = 0; |
| } |
| |
| target->setIndexSourceToBuffer(aaStrokeRectIndexBuffer()); |
| target->drawIndexed(kTriangles_PrimitiveType, |
| 0, 0, 16, aaStrokeRectIndexCount()); |
| } |
| |
| /** |
| * Returns true if the rects edges are integer-aligned. |
| */ |
| static bool isIRect(const GrRect& r) { |
| return GrScalarIsInt(r.fLeft) && GrScalarIsInt(r.fTop) && |
| GrScalarIsInt(r.fRight) && GrScalarIsInt(r.fBottom); |
| } |
| |
| static bool apply_aa_to_rect(GrDrawTarget* target, |
| GrGpu* gpu, |
| const GrPaint& paint, |
| const GrRect& rect, |
| GrScalar width, |
| const GrMatrix* matrix, |
| GrMatrix* combinedMatrix, |
| GrRect* devRect) { |
| // we use a simple alpha ramp to do aa on axis-aligned rects |
| // do AA with alpha ramp if the caller requested AA, the rect |
| // will be axis-aligned,the render target is not |
| // multisampled, and the rect won't land on integer coords. |
| |
| if (!paint.fAntiAlias) { |
| return false; |
| } |
| |
| if (target->getRenderTarget()->isMultisampled()) { |
| return false; |
| } |
| |
| if (0 == width && gpu->supportsAALines()) { |
| return false; |
| } |
| |
| if (!target->getViewMatrix().preservesAxisAlignment()) { |
| return false; |
| } |
| |
| if (NULL != matrix && |
| !matrix->preservesAxisAlignment()) { |
| return false; |
| } |
| |
| *combinedMatrix = target->getViewMatrix(); |
| if (NULL != matrix) { |
| combinedMatrix->preConcat(*matrix); |
| GrAssert(combinedMatrix->preservesAxisAlignment()); |
| } |
| |
| combinedMatrix->mapRect(devRect, rect); |
| devRect->sort(); |
| |
| if (width < 0) { |
| return !isIRect(*devRect); |
| } else { |
| return true; |
| } |
| } |
| |
| void GrContext::drawRect(const GrPaint& paint, |
| const GrRect& rect, |
| GrScalar width, |
| const GrMatrix* matrix) { |
| SK_TRACE_EVENT0("GrContext::drawRect"); |
| |
| GrDrawTarget* target = this->prepareToDraw(paint, kUnbuffered_DrawCategory); |
| int stageMask = paint.getActiveStageMask(); |
| |
| GrRect devRect = rect; |
| GrMatrix combinedMatrix; |
| bool doAA = apply_aa_to_rect(target, fGpu, paint, rect, width, matrix, |
| &combinedMatrix, &devRect); |
| |
| if (doAA) { |
| GrDrawTarget::AutoViewMatrixRestore avm(target); |
| if (stageMask) { |
| GrMatrix inv; |
| if (combinedMatrix.invert(&inv)) { |
| target->preConcatSamplerMatrices(stageMask, inv); |
| } |
| } |
| target->setViewMatrix(GrMatrix::I()); |
| if (width >= 0) { |
| GrVec strokeSize;; |
| if (width > 0) { |
| strokeSize.set(width, width); |
| combinedMatrix.mapVectors(&strokeSize, 1); |
| strokeSize.setAbs(strokeSize); |
| } else { |
| strokeSize.set(GR_Scalar1, GR_Scalar1); |
| } |
| strokeAARect(target, paint, devRect, strokeSize); |
| } else { |
| fillAARect(target, paint, devRect); |
| } |
| return; |
| } |
| |
| if (width >= 0) { |
| // TODO: consider making static vertex buffers for these cases. |
| // Hairline could be done by just adding closing vertex to |
| // unitSquareVertexBuffer() |
| GrVertexLayout layout = PaintStageVertexLayoutBits(paint, NULL); |
| |
| static const int worstCaseVertCount = 10; |
| GrDrawTarget::AutoReleaseGeometry geo(target, layout, worstCaseVertCount, 0); |
| |
| if (!geo.succeeded()) { |
| GrPrintf("Failed to get space for vertices!\n"); |
| return; |
| } |
| |
| GrPrimitiveType primType; |
| int vertCount; |
| GrPoint* vertex = geo.positions(); |
| |
| if (width > 0) { |
| vertCount = 10; |
| primType = kTriangleStrip_PrimitiveType; |
| setStrokeRectStrip(vertex, rect, width); |
| } else { |
| // hairline |
| vertCount = 5; |
| primType = kLineStrip_PrimitiveType; |
| vertex[0].set(rect.fLeft, rect.fTop); |
| vertex[1].set(rect.fRight, rect.fTop); |
| vertex[2].set(rect.fRight, rect.fBottom); |
| vertex[3].set(rect.fLeft, rect.fBottom); |
| vertex[4].set(rect.fLeft, rect.fTop); |
| } |
| |
| GrDrawTarget::AutoViewMatrixRestore avmr; |
| if (NULL != matrix) { |
| avmr.set(target); |
| target->preConcatViewMatrix(*matrix); |
| target->preConcatSamplerMatrices(stageMask, *matrix); |
| } |
| |
| target->drawNonIndexed(primType, 0, vertCount); |
| } else { |
| #if GR_STATIC_RECT_VB |
| GrVertexLayout layout = PaintStageVertexLayoutBits(paint, NULL); |
| const GrVertexBuffer* sqVB = fGpu->getUnitSquareVertexBuffer(); |
| if (NULL == sqVB) { |
| GrPrintf("Failed to create static rect vb.\n"); |
| return; |
| } |
| target->setVertexSourceToBuffer(layout, sqVB); |
| GrDrawTarget::AutoViewMatrixRestore avmr(target); |
| GrMatrix m; |
| m.setAll(rect.width(), 0, rect.fLeft, |
| 0, rect.height(), rect.fTop, |
| 0, 0, GrMatrix::I()[8]); |
| |
| if (NULL != matrix) { |
| m.postConcat(*matrix); |
| } |
| |
| target->preConcatViewMatrix(m); |
| target->preConcatSamplerMatrices(stageMask, m); |
| |
| target->drawNonIndexed(kTriangleFan_PrimitiveType, 0, 4); |
| #else |
| target->drawSimpleRect(rect, matrix, stageMask); |
| #endif |
| } |
| } |
| |
| void GrContext::drawRectToRect(const GrPaint& paint, |
| const GrRect& dstRect, |
| const GrRect& srcRect, |
| const GrMatrix* dstMatrix, |
| const GrMatrix* srcMatrix) { |
| SK_TRACE_EVENT0("GrContext::drawRectToRect"); |
| |
| // srcRect refers to paint's first texture |
| if (NULL == paint.getTexture(0)) { |
| drawRect(paint, dstRect, -1, dstMatrix); |
| return; |
| } |
| |
| GR_STATIC_ASSERT(!BATCH_RECT_TO_RECT || !GR_STATIC_RECT_VB); |
| |
| #if GR_STATIC_RECT_VB |
| GrDrawTarget* target = this->prepareToDraw(paint, kUnbuffered_DrawCategory); |
| |
| GrVertexLayout layout = PaintStageVertexLayoutBits(paint, NULL); |
| GrDrawTarget::AutoViewMatrixRestore avmr(target); |
| |
| GrMatrix m; |
| |
| m.setAll(dstRect.width(), 0, dstRect.fLeft, |
| 0, dstRect.height(), dstRect.fTop, |
| 0, 0, GrMatrix::I()[8]); |
| if (NULL != dstMatrix) { |
| m.postConcat(*dstMatrix); |
| } |
| target->preConcatViewMatrix(m); |
| |
| // srcRect refers to first stage |
| int otherStageMask = paint.getActiveStageMask() & |
| (~(1 << GrPaint::kFirstTextureStage)); |
| if (otherStageMask) { |
| target->preConcatSamplerMatrices(otherStageMask, m); |
| } |
| |
| m.setAll(srcRect.width(), 0, srcRect.fLeft, |
| 0, srcRect.height(), srcRect.fTop, |
| 0, 0, GrMatrix::I()[8]); |
| if (NULL != srcMatrix) { |
| m.postConcat(*srcMatrix); |
| } |
| target->preConcatSamplerMatrix(GrPaint::kFirstTextureStage, m); |
| |
| const GrVertexBuffer* sqVB = fGpu->getUnitSquareVertexBuffer(); |
| if (NULL == sqVB) { |
| GrPrintf("Failed to create static rect vb.\n"); |
| return; |
| } |
| target->setVertexSourceToBuffer(layout, sqVB); |
| target->drawNonIndexed(kTriangleFan_PrimitiveType, 0, 4); |
| #else |
| |
| GrDrawTarget* target; |
| #if BATCH_RECT_TO_RECT |
| target = this->prepareToDraw(paint, kBuffered_DrawCategory); |
| #else |
| target = this->prepareToDraw(paint, kUnbuffered_DrawCategory); |
| #endif |
| |
| const GrRect* srcRects[GrDrawTarget::kNumStages] = {NULL}; |
| const GrMatrix* srcMatrices[GrDrawTarget::kNumStages] = {NULL}; |
| srcRects[0] = &srcRect; |
| srcMatrices[0] = srcMatrix; |
| |
| target->drawRect(dstRect, dstMatrix, 1, srcRects, srcMatrices); |
| #endif |
| } |
| |
| void GrContext::drawVertices(const GrPaint& paint, |
| GrPrimitiveType primitiveType, |
| int vertexCount, |
| const GrPoint positions[], |
| const GrPoint texCoords[], |
| const GrColor colors[], |
| const uint16_t indices[], |
| int indexCount) { |
| SK_TRACE_EVENT0("GrContext::drawVertices"); |
| |
| GrDrawTarget::AutoReleaseGeometry geo; |
| |
| GrDrawTarget* target = this->prepareToDraw(paint, kUnbuffered_DrawCategory); |
| |
| bool hasTexCoords[GrPaint::kTotalStages] = { |
| NULL != texCoords, // texCoordSrc provides explicit stage 0 coords |
| 0 // remaining stages use positions |
| }; |
| |
| GrVertexLayout layout = PaintStageVertexLayoutBits(paint, hasTexCoords); |
| |
| if (NULL != colors) { |
| layout |= GrDrawTarget::kColor_VertexLayoutBit; |
| } |
| int vertexSize = GrDrawTarget::VertexSize(layout); |
| |
| if (sizeof(GrPoint) != vertexSize) { |
| if (!geo.set(target, layout, vertexCount, 0)) { |
| GrPrintf("Failed to get space for vertices!\n"); |
| return; |
| } |
| int texOffsets[GrDrawTarget::kMaxTexCoords]; |
| int colorOffset; |
| GrDrawTarget::VertexSizeAndOffsetsByIdx(layout, |
| texOffsets, |
| &colorOffset); |
| void* curVertex = geo.vertices(); |
| |
| for (int i = 0; i < vertexCount; ++i) { |
| *((GrPoint*)curVertex) = positions[i]; |
| |
| if (texOffsets[0] > 0) { |
| *(GrPoint*)((intptr_t)curVertex + texOffsets[0]) = texCoords[i]; |
| } |
| if (colorOffset > 0) { |
| *(GrColor*)((intptr_t)curVertex + colorOffset) = colors[i]; |
| } |
| curVertex = (void*)((intptr_t)curVertex + vertexSize); |
| } |
| } else { |
| target->setVertexSourceToArray(layout, positions, vertexCount); |
| } |
| |
| // we don't currently apply offscreen AA to this path. Need improved |
| // management of GrDrawTarget's geometry to avoid copying points per-tile. |
| |
| if (NULL != indices) { |
| target->setIndexSourceToArray(indices, indexCount); |
| target->drawIndexed(primitiveType, 0, 0, vertexCount, indexCount); |
| } else { |
| target->drawNonIndexed(primitiveType, 0, vertexCount); |
| } |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| void GrContext::drawPath(const GrPaint& paint, const GrPath& path, |
| GrPathFill fill, const GrPoint* translate) { |
| |
| GrDrawTarget* target = this->prepareToDraw(paint, kUnbuffered_DrawCategory); |
| GrPathRenderer* pr = this->getPathRenderer(target, path, fill); |
| if (NULL == pr) { |
| GrPrintf("Unable to find path renderer compatible with path.\n"); |
| return; |
| } |
| |
| GrPathRenderer::AutoClearPath arp(pr, target, &path, fill, translate); |
| GrDrawTarget::StageBitfield stageMask = paint.getActiveStageMask(); |
| |
| if (!pr->supportsAA(target, path, fill) && |
| this->doOffscreenAA(target, paint, kHairLine_PathFill == fill)) { |
| |
| bool needsStencil = pr->requiresStencilPass(target, path, fill); |
| |
| // compute bounds as intersection of rt size, clip, and path |
| GrIRect bound = SkIRect::MakeWH(target->getRenderTarget()->width(), |
| target->getRenderTarget()->height()); |
| GrIRect clipIBounds; |
| if (target->getClip().hasConservativeBounds()) { |
| target->getClip().getConservativeBounds().roundOut(&clipIBounds); |
| if (!bound.intersect(clipIBounds)) { |
| return; |
| } |
| } |
| |
| GrRect pathBounds = path.getBounds(); |
| if (!pathBounds.isEmpty()) { |
| if (NULL != translate) { |
| pathBounds.offset(*translate); |
| } |
| target->getViewMatrix().mapRect(&pathBounds, pathBounds); |
| GrIRect pathIBounds; |
| pathBounds.roundOut(&pathIBounds); |
| if (!bound.intersect(pathIBounds)) { |
| return; |
| } |
| } |
| OffscreenRecord record; |
| if (this->prepareForOffscreenAA(target, needsStencil, bound, |
| pr, &record)) { |
| for (int tx = 0; tx < record.fTileCountX; ++tx) { |
| for (int ty = 0; ty < record.fTileCountY; ++ty) { |
| this->setupOffscreenAAPass1(target, bound, tx, ty, &record); |
| pr->drawPath(0); |
| this->doOffscreenAAPass2(target, paint, bound, tx, ty, &record); |
| } |
| } |
| this->cleanupOffscreenAA(target, pr, &record); |
| if (IsFillInverted(fill) && bound != clipIBounds) { |
| GrDrawTarget::AutoDeviceCoordDraw adcd(target, stageMask); |
| GrRect rect; |
| if (clipIBounds.fTop < bound.fTop) { |
| rect.setLTRB(clipIBounds.fLeft, clipIBounds.fTop, |
| clipIBounds.fRight, bound.fTop); |
| target->drawSimpleRect(rect, NULL, stageMask); |
| } |
| if (clipIBounds.fLeft < bound.fLeft) { |
| rect.setLTRB(clipIBounds.fLeft, bound.fTop, |
| bound.fLeft, bound.fBottom); |
| target->drawSimpleRect(rect, NULL, stageMask); |
| } |
| if (clipIBounds.fRight > bound.fRight) { |
| rect.setLTRB(bound.fRight, bound.fTop, |
| clipIBounds.fRight, bound.fBottom); |
| target->drawSimpleRect(rect, NULL, stageMask); |
| } |
| if (clipIBounds.fBottom > bound.fBottom) { |
| rect.setLTRB(clipIBounds.fLeft, bound.fBottom, |
| clipIBounds.fRight, clipIBounds.fBottom); |
| target->drawSimpleRect(rect, NULL, stageMask); |
| } |
| } |
| return; |
| } |
| } |
| pr->drawPath(stageMask); |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| void GrContext::flush(int flagsBitfield) { |
| if (kDiscard_FlushBit & flagsBitfield) { |
| fDrawBuffer->reset(); |
| } else { |
| flushDrawBuffer(); |
| } |
| |
| if (kForceCurrentRenderTarget_FlushBit & flagsBitfield) { |
| fGpu->forceRenderTargetFlush(); |
| } |
| } |
| |
| void GrContext::flushText() { |
| if (kText_DrawCategory == fLastDrawCategory) { |
| flushDrawBuffer(); |
| } |
| } |
| |
| void GrContext::flushDrawBuffer() { |
| #if BATCH_RECT_TO_RECT || DEFER_TEXT_RENDERING |
| if (fDrawBuffer) { |
| fDrawBuffer->playback(fGpu); |
| fDrawBuffer->reset(); |
| } |
| #endif |
| } |
| |
| bool GrContext::readTexturePixels(GrTexture* texture, |
| int left, int top, int width, int height, |
| GrPixelConfig config, void* buffer) { |
| SK_TRACE_EVENT0("GrContext::readTexturePixels"); |
| |
| // TODO: code read pixels for textures that aren't rendertargets |
| |
| this->flush(); |
| GrRenderTarget* target = texture->asRenderTarget(); |
| if (NULL != target) { |
| return fGpu->readPixels(target, |
| left, top, width, height, |
| config, buffer); |
| } else { |
| return false; |
| } |
| } |
| |
| bool GrContext::readRenderTargetPixels(GrRenderTarget* target, |
| int left, int top, int width, int height, |
| GrPixelConfig config, void* buffer) { |
| SK_TRACE_EVENT0("GrContext::readRenderTargetPixels"); |
| uint32_t flushFlags = 0; |
| if (NULL == target) { |
| flushFlags |= GrContext::kForceCurrentRenderTarget_FlushBit; |
| } |
| |
| this->flush(flushFlags); |
| return fGpu->readPixels(target, |
| left, top, width, height, |
| config, buffer); |
| } |
| |
| void GrContext::writePixels(int left, int top, int width, int height, |
| GrPixelConfig config, const void* buffer, |
| size_t stride) { |
| SK_TRACE_EVENT0("GrContext::writePixels"); |
| |
| // TODO: when underlying api has a direct way to do this we should use it |
| // (e.g. glDrawPixels on desktop GL). |
| |
| this->flush(true); |
| |
| const GrTextureDesc desc = { |
| kNone_GrTextureFlags, kNone_GrAALevel, width, height, config |
| }; |
| GrAutoScratchTexture ast(this, desc); |
| GrTexture* texture = ast.texture(); |
| if (NULL == texture) { |
| return; |
| } |
| texture->uploadTextureData(0, 0, width, height, buffer, stride); |
| |
| GrDrawTarget::AutoStateRestore asr(fGpu); |
| |
| GrMatrix matrix; |
| matrix.setTranslate(GrIntToScalar(left), GrIntToScalar(top)); |
| fGpu->setViewMatrix(matrix); |
| |
| fGpu->setColorFilter(0, SkXfermode::kDst_Mode); |
| fGpu->disableState(GrDrawTarget::kClip_StateBit); |
| fGpu->setAlpha(0xFF); |
| fGpu->setBlendFunc(kOne_BlendCoeff, |
| kZero_BlendCoeff); |
| fGpu->setTexture(0, texture); |
| |
| GrSamplerState sampler; |
| sampler.setClampNoFilter(); |
| matrix.setIDiv(texture->width(), texture->height()); |
| sampler.setMatrix(matrix); |
| fGpu->setSamplerState(0, sampler); |
| |
| GrVertexLayout layout = GrDrawTarget::StagePosAsTexCoordVertexLayoutBit(0); |
| static const int VCOUNT = 4; |
| // TODO: Use GrGpu::drawRect here |
| GrDrawTarget::AutoReleaseGeometry geo(fGpu, layout, VCOUNT, 0); |
| if (!geo.succeeded()) { |
| GrPrintf("Failed to get space for vertices!\n"); |
| return; |
| } |
| ((GrPoint*)geo.vertices())->setIRectFan(0, 0, width, height); |
| fGpu->drawNonIndexed(kTriangleFan_PrimitiveType, 0, VCOUNT); |
| } |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| void GrContext::SetPaint(const GrPaint& paint, GrDrawTarget* target) { |
| |
| for (int i = 0; i < GrPaint::kMaxTextures; ++i) { |
| int s = i + GrPaint::kFirstTextureStage; |
| target->setTexture(s, paint.getTexture(i)); |
| target->setSamplerState(s, *paint.getTextureSampler(i)); |
| } |
| |
| target->setFirstCoverageStage(GrPaint::kFirstMaskStage); |
| |
| for (int i = 0; i < GrPaint::kMaxMasks; ++i) { |
| int s = i + GrPaint::kFirstMaskStage; |
| target->setTexture(s, paint.getMask(i)); |
| target->setSamplerState(s, *paint.getMaskSampler(i)); |
| } |
| |
| target->setColor(paint.fColor); |
| |
| if (paint.fDither) { |
| target->enableState(GrDrawTarget::kDither_StateBit); |
| } else { |
| target->disableState(GrDrawTarget::kDither_StateBit); |
| } |
| if (paint.fAntiAlias) { |
| target->enableState(GrDrawTarget::kAntialias_StateBit); |
| } else { |
| target->disableState(GrDrawTarget::kAntialias_StateBit); |
| } |
| target->setBlendFunc(paint.fSrcBlendCoeff, paint.fDstBlendCoeff); |
| target->setColorFilter(paint.fColorFilterColor, paint.fColorFilterXfermode); |
| } |
| |
| GrDrawTarget* GrContext::prepareToDraw(const GrPaint& paint, |
| DrawCategory category) { |
| if (category != fLastDrawCategory) { |
| flushDrawBuffer(); |
| fLastDrawCategory = category; |
| } |
| SetPaint(paint, fGpu); |
| GrDrawTarget* target = fGpu; |
| switch (category) { |
| case kText_DrawCategory: |
| #if DEFER_TEXT_RENDERING |
| target = fDrawBuffer; |
| fDrawBuffer->initializeDrawStateAndClip(*fGpu); |
| #else |
| target = fGpu; |
| #endif |
| break; |
| case kUnbuffered_DrawCategory: |
| target = fGpu; |
| break; |
| case kBuffered_DrawCategory: |
| target = fDrawBuffer; |
| fDrawBuffer->initializeDrawStateAndClip(*fGpu); |
| break; |
| } |
| return target; |
| } |
| |
| GrPathRenderer* GrContext::getPathRenderer(const GrDrawTarget* target, |
| const GrPath& path, |
| GrPathFill fill) { |
| if (NULL == fPathRendererChain) { |
| fPathRendererChain = |
| new GrPathRendererChain(this, GrPathRendererChain::kNone_UsageFlag); |
| } |
| return fPathRendererChain->getPathRenderer(target, path, fill); |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| void GrContext::setRenderTarget(GrRenderTarget* target) { |
| this->flush(false); |
| fGpu->setRenderTarget(target); |
| } |
| |
| GrRenderTarget* GrContext::getRenderTarget() { |
| return fGpu->getRenderTarget(); |
| } |
| |
| const GrRenderTarget* GrContext::getRenderTarget() const { |
| return fGpu->getRenderTarget(); |
| } |
| |
| const GrMatrix& GrContext::getMatrix() const { |
| return fGpu->getViewMatrix(); |
| } |
| |
| void GrContext::setMatrix(const GrMatrix& m) { |
| fGpu->setViewMatrix(m); |
| } |
| |
| void GrContext::concatMatrix(const GrMatrix& m) const { |
| fGpu->preConcatViewMatrix(m); |
| } |
| |
| static inline intptr_t setOrClear(intptr_t bits, int shift, intptr_t pred) { |
| intptr_t mask = 1 << shift; |
| if (pred) { |
| bits |= mask; |
| } else { |
| bits &= ~mask; |
| } |
| return bits; |
| } |
| |
| void GrContext::resetStats() { |
| fGpu->resetStats(); |
| } |
| |
| const GrGpuStats& GrContext::getStats() const { |
| return fGpu->getStats(); |
| } |
| |
| void GrContext::printStats() const { |
| fGpu->printStats(); |
| } |
| |
| GrContext::GrContext(GrGpu* gpu) { |
| fGpu = gpu; |
| fGpu->ref(); |
| fGpu->setContext(this); |
| |
| fPathRendererChain = NULL; |
| |
| fTextureCache = new GrResourceCache(MAX_TEXTURE_CACHE_COUNT, |
| MAX_TEXTURE_CACHE_BYTES); |
| fFontCache = new GrFontCache(fGpu); |
| |
| fLastDrawCategory = kUnbuffered_DrawCategory; |
| |
| fDrawBuffer = NULL; |
| fDrawBufferVBAllocPool = NULL; |
| fDrawBufferIBAllocPool = NULL; |
| |
| fAAFillRectIndexBuffer = NULL; |
| fAAStrokeRectIndexBuffer = NULL; |
| |
| int gpuMaxOffscreen = fGpu->maxRenderTargetSize(); |
| if (!PREFER_MSAA_OFFSCREEN_AA || !fGpu->supportsFullsceneAA()) { |
| gpuMaxOffscreen /= OFFSCREEN_SSAA_SCALE; |
| } |
| fMaxOffscreenAASize = GrMin(GR_MAX_OFFSCREEN_AA_SIZE, gpuMaxOffscreen); |
| |
| this->setupDrawBuffer(); |
| } |
| |
| void GrContext::setupDrawBuffer() { |
| |
| GrAssert(NULL == fDrawBuffer); |
| GrAssert(NULL == fDrawBufferVBAllocPool); |
| GrAssert(NULL == fDrawBufferIBAllocPool); |
| |
| #if DEFER_TEXT_RENDERING || BATCH_RECT_TO_RECT |
| fDrawBufferVBAllocPool = |
| new GrVertexBufferAllocPool(fGpu, false, |
| DRAW_BUFFER_VBPOOL_BUFFER_SIZE, |
| DRAW_BUFFER_VBPOOL_PREALLOC_BUFFERS); |
| fDrawBufferIBAllocPool = |
| new GrIndexBufferAllocPool(fGpu, false, |
| DRAW_BUFFER_IBPOOL_BUFFER_SIZE, |
| DRAW_BUFFER_IBPOOL_PREALLOC_BUFFERS); |
| |
| fDrawBuffer = new GrInOrderDrawBuffer(fDrawBufferVBAllocPool, |
| fDrawBufferIBAllocPool); |
| #endif |
| |
| #if BATCH_RECT_TO_RECT |
| fDrawBuffer->setQuadIndexBuffer(this->getQuadIndexBuffer()); |
| #endif |
| } |
| |
| GrDrawTarget* GrContext::getTextTarget(const GrPaint& paint) { |
| GrDrawTarget* target; |
| #if DEFER_TEXT_RENDERING |
| target = prepareToDraw(paint, kText_DrawCategory); |
| #else |
| target = prepareToDraw(paint, kUnbuffered_DrawCategory); |
| #endif |
| SetPaint(paint, target); |
| return target; |
| } |
| |
| const GrIndexBuffer* GrContext::getQuadIndexBuffer() const { |
| return fGpu->getQuadIndexBuffer(); |
| } |
| |
| void GrContext::convolveInX(GrTexture* texture, |
| const SkRect& rect, |
| const float* kernel, |
| int kernelWidth) { |
| float imageIncrement[2] = {1.0f / texture->width(), 0.0f}; |
| convolve(texture, rect, imageIncrement, kernel, kernelWidth); |
| } |
| |
| void GrContext::convolveInY(GrTexture* texture, |
| const SkRect& rect, |
| const float* kernel, |
| int kernelWidth) { |
| float imageIncrement[2] = {0.0f, 1.0f / texture->height()}; |
| convolve(texture, rect, imageIncrement, kernel, kernelWidth); |
| } |
| |
| void GrContext::convolve(GrTexture* texture, |
| const SkRect& rect, |
| float imageIncrement[2], |
| const float* kernel, |
| int kernelWidth) { |
| GrDrawTarget::AutoStateRestore asr(fGpu); |
| GrMatrix sampleM; |
| GrSamplerState sampler(GrSamplerState::kClamp_WrapMode, |
| GrSamplerState::kClamp_WrapMode, |
| GrSamplerState::kConvolution_Filter); |
| sampler.setConvolutionParams(kernelWidth, kernel, imageIncrement); |
| sampleM.setScale(GR_Scalar1 / texture->width(), |
| GR_Scalar1 / texture->height()); |
| sampler.setMatrix(sampleM); |
| fGpu->setSamplerState(0, sampler); |
| fGpu->setViewMatrix(GrMatrix::I()); |
| fGpu->setTexture(0, texture); |
| fGpu->setBlendFunc(kOne_BlendCoeff, kZero_BlendCoeff); |
| fGpu->drawSimpleRect(rect, NULL, 1 << 0); |
| } |