| |
| /* |
| * 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 "GrGpuGL.h" |
| #include "GrGLStencilBuffer.h" |
| #include "GrTypes.h" |
| #include "SkTemplates.h" |
| |
| static const GrGLuint GR_MAX_GLUINT = ~0; |
| static const GrGLint GR_INVAL_GLINT = ~0; |
| |
| #define GL_CALL(X) GR_GL_CALL(this->glInterface(), X) |
| #define GL_CALL_RET(RET, X) GR_GL_CALL_RET(this->glInterface(), RET, X) |
| |
| // we use a spare texture unit to avoid |
| // mucking with the state of any of the stages. |
| static const int SPARE_TEX_UNIT = GrDrawState::kNumStages; |
| |
| #define SKIP_CACHE_CHECK true |
| |
| #if GR_GL_CHECK_ALLOC_WITH_GET_ERROR |
| #define CLEAR_ERROR_BEFORE_ALLOC(iface) GrGLClearErr(iface) |
| #define GL_ALLOC_CALL(iface, call) GR_GL_CALL_NOERRCHECK(iface, call) |
| #define CHECK_ALLOC_ERROR(iface) GR_GL_GET_ERROR(iface) |
| #else |
| #define CLEAR_ERROR_BEFORE_ALLOC(iface) |
| #define GL_ALLOC_CALL(iface, call) GR_GL_CALL(iface, call) |
| #define CHECK_ALLOC_ERROR(iface) GR_GL_NO_ERROR |
| #endif |
| |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| static const GrGLenum gXfermodeCoeff2Blend[] = { |
| GR_GL_ZERO, |
| GR_GL_ONE, |
| GR_GL_SRC_COLOR, |
| GR_GL_ONE_MINUS_SRC_COLOR, |
| GR_GL_DST_COLOR, |
| GR_GL_ONE_MINUS_DST_COLOR, |
| GR_GL_SRC_ALPHA, |
| GR_GL_ONE_MINUS_SRC_ALPHA, |
| GR_GL_DST_ALPHA, |
| GR_GL_ONE_MINUS_DST_ALPHA, |
| GR_GL_CONSTANT_COLOR, |
| GR_GL_ONE_MINUS_CONSTANT_COLOR, |
| GR_GL_CONSTANT_ALPHA, |
| GR_GL_ONE_MINUS_CONSTANT_ALPHA, |
| |
| // extended blend coeffs |
| GR_GL_SRC1_COLOR, |
| GR_GL_ONE_MINUS_SRC1_COLOR, |
| GR_GL_SRC1_ALPHA, |
| GR_GL_ONE_MINUS_SRC1_ALPHA, |
| }; |
| |
| bool GrGpuGL::BlendCoeffReferencesConstant(GrBlendCoeff coeff) { |
| static const bool gCoeffReferencesBlendConst[] = { |
| false, |
| false, |
| false, |
| false, |
| false, |
| false, |
| false, |
| false, |
| false, |
| false, |
| true, |
| true, |
| true, |
| true, |
| |
| // extended blend coeffs |
| false, |
| false, |
| false, |
| false, |
| }; |
| return gCoeffReferencesBlendConst[coeff]; |
| GR_STATIC_ASSERT(kTotalBlendCoeffCount == GR_ARRAY_COUNT(gCoeffReferencesBlendConst)); |
| |
| GR_STATIC_ASSERT(0 == kZero_BlendCoeff); |
| GR_STATIC_ASSERT(1 == kOne_BlendCoeff); |
| GR_STATIC_ASSERT(2 == kSC_BlendCoeff); |
| GR_STATIC_ASSERT(3 == kISC_BlendCoeff); |
| GR_STATIC_ASSERT(4 == kDC_BlendCoeff); |
| GR_STATIC_ASSERT(5 == kIDC_BlendCoeff); |
| GR_STATIC_ASSERT(6 == kSA_BlendCoeff); |
| GR_STATIC_ASSERT(7 == kISA_BlendCoeff); |
| GR_STATIC_ASSERT(8 == kDA_BlendCoeff); |
| GR_STATIC_ASSERT(9 == kIDA_BlendCoeff); |
| GR_STATIC_ASSERT(10 == kConstC_BlendCoeff); |
| GR_STATIC_ASSERT(11 == kIConstC_BlendCoeff); |
| GR_STATIC_ASSERT(12 == kConstA_BlendCoeff); |
| GR_STATIC_ASSERT(13 == kIConstA_BlendCoeff); |
| |
| GR_STATIC_ASSERT(14 == kS2C_BlendCoeff); |
| GR_STATIC_ASSERT(15 == kIS2C_BlendCoeff); |
| GR_STATIC_ASSERT(16 == kS2A_BlendCoeff); |
| GR_STATIC_ASSERT(17 == kIS2A_BlendCoeff); |
| |
| // assertion for gXfermodeCoeff2Blend have to be in GrGpu scope |
| GR_STATIC_ASSERT(kTotalBlendCoeffCount == GR_ARRAY_COUNT(gXfermodeCoeff2Blend)); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| void GrGpuGL::AdjustTextureMatrix(const GrGLTexture* texture, |
| GrSamplerState::SampleMode mode, |
| GrMatrix* matrix) { |
| GrAssert(NULL != texture); |
| GrAssert(NULL != matrix); |
| GrGLTexture::Orientation orientation = texture->orientation(); |
| if (GrGLTexture::kBottomUp_Orientation == orientation) { |
| GrMatrix invY; |
| invY.setAll(GR_Scalar1, 0, 0, |
| 0, -GR_Scalar1, GR_Scalar1, |
| 0, 0, GrMatrix::I()[8]); |
| matrix->postConcat(invY); |
| } else { |
| GrAssert(GrGLTexture::kTopDown_Orientation == orientation); |
| } |
| } |
| |
| bool GrGpuGL::TextureMatrixIsIdentity(const GrGLTexture* texture, |
| const GrSamplerState& sampler) { |
| GrAssert(NULL != texture); |
| if (!sampler.getMatrix().isIdentity()) { |
| return false; |
| } |
| GrGLTexture::Orientation orientation = texture->orientation(); |
| if (GrGLTexture::kBottomUp_Orientation == orientation) { |
| return false; |
| } else { |
| GrAssert(GrGLTexture::kTopDown_Orientation == orientation); |
| } |
| return true; |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| static bool gPrintStartupSpew; |
| |
| static bool fbo_test(const GrGLInterface* gl, int w, int h) { |
| |
| GR_GL_CALL(gl, ActiveTexture(GR_GL_TEXTURE0 + SPARE_TEX_UNIT)); |
| |
| GrGLuint testFBO; |
| GR_GL_CALL(gl, GenFramebuffers(1, &testFBO)); |
| GR_GL_CALL(gl, BindFramebuffer(GR_GL_FRAMEBUFFER, testFBO)); |
| GrGLuint testRTTex; |
| GR_GL_CALL(gl, GenTextures(1, &testRTTex)); |
| GR_GL_CALL(gl, BindTexture(GR_GL_TEXTURE_2D, testRTTex)); |
| // some implementations require texture to be mip-map complete before |
| // FBO with level 0 bound as color attachment will be framebuffer complete. |
| GR_GL_CALL(gl, TexParameteri(GR_GL_TEXTURE_2D, |
| GR_GL_TEXTURE_MIN_FILTER, |
| GR_GL_NEAREST)); |
| GR_GL_CALL(gl, TexImage2D(GR_GL_TEXTURE_2D, 0, GR_GL_RGBA, w, h, |
| 0, GR_GL_RGBA, GR_GL_UNSIGNED_BYTE, NULL)); |
| GR_GL_CALL(gl, BindTexture(GR_GL_TEXTURE_2D, 0)); |
| GR_GL_CALL(gl, FramebufferTexture2D(GR_GL_FRAMEBUFFER, |
| GR_GL_COLOR_ATTACHMENT0, |
| GR_GL_TEXTURE_2D, testRTTex, 0)); |
| GrGLenum status; |
| GR_GL_CALL_RET(gl, status, CheckFramebufferStatus(GR_GL_FRAMEBUFFER)); |
| GR_GL_CALL(gl, DeleteFramebuffers(1, &testFBO)); |
| GR_GL_CALL(gl, DeleteTextures(1, &testRTTex)); |
| |
| return status == GR_GL_FRAMEBUFFER_COMPLETE; |
| } |
| |
| GrGpuGL::GrGpuGL(const GrGLContextInfo& ctxInfo) : fGLContextInfo(ctxInfo) { |
| |
| GrAssert(ctxInfo.isInitialized()); |
| |
| fPrintedCaps = false; |
| |
| GrGLClearErr(fGLContextInfo.interface()); |
| |
| if (gPrintStartupSpew) { |
| const GrGLubyte* ext; |
| GL_CALL_RET(ext, GetString(GR_GL_EXTENSIONS)); |
| const GrGLubyte* vendor; |
| const GrGLubyte* renderer; |
| const GrGLubyte* version; |
| GL_CALL_RET(vendor, GetString(GR_GL_VENDOR)); |
| GL_CALL_RET(renderer, GetString(GR_GL_RENDERER)); |
| GL_CALL_RET(version, GetString(GR_GL_VERSION)); |
| GrPrintf("------------------------- create GrGpuGL %p --------------\n", |
| this); |
| GrPrintf("------ VENDOR %s\n", vendor); |
| GrPrintf("------ RENDERER %s\n", renderer); |
| GrPrintf("------ VERSION %s\n", version); |
| GrPrintf("------ EXTENSIONS\n %s \n", ext); |
| } |
| |
| this->resetDirtyFlags(); |
| |
| this->initCaps(); |
| |
| fLastSuccessfulStencilFmtIdx = 0; |
| fCanPreserveUnpremulRoundtrip = kUnknown_CanPreserveUnpremulRoundtrip; |
| } |
| |
| GrGpuGL::~GrGpuGL() { |
| // This must be called by before the GrDrawTarget destructor |
| this->releaseGeometry(); |
| // This subclass must do this before the base class destructor runs |
| // since we will unref the GrGLInterface. |
| this->releaseResources(); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| void GrGpuGL::initCaps() { |
| GrGLint maxTextureUnits; |
| // check FS and fixed-function texture unit limits |
| // we only use textures in the fragment stage currently. |
| // checks are > to make sure we have a spare unit. |
| const GrGLInterface* gl = this->glInterface(); |
| GR_GL_GetIntegerv(gl, GR_GL_MAX_TEXTURE_IMAGE_UNITS, &maxTextureUnits); |
| GrAssert(maxTextureUnits > GrDrawState::kNumStages); |
| if (kES2_GrGLBinding != this->glBinding()) { |
| GR_GL_GetIntegerv(gl, GR_GL_MAX_TEXTURE_UNITS, &maxTextureUnits); |
| GrAssert(maxTextureUnits > GrDrawState::kNumStages); |
| } |
| |
| GrGLint numFormats; |
| GR_GL_GetIntegerv(gl, GR_GL_NUM_COMPRESSED_TEXTURE_FORMATS, &numFormats); |
| SkAutoSTMalloc<10, GrGLint> formats(numFormats); |
| GR_GL_GetIntegerv(gl, GR_GL_COMPRESSED_TEXTURE_FORMATS, formats); |
| for (int i = 0; i < numFormats; ++i) { |
| if (formats[i] == GR_GL_PALETTE8_RGBA8) { |
| fCaps.f8BitPaletteSupport = true; |
| break; |
| } |
| } |
| |
| if (kDesktop_GrGLBinding == this->glBinding()) { |
| // we could also look for GL_ATI_separate_stencil extension or |
| // GL_EXT_stencil_two_side but they use different function signatures |
| // than GL2.0+ (and than each other). |
| fCaps.fTwoSidedStencilSupport = (this->glVersion() >= GR_GL_VER(2,0)); |
| // supported on GL 1.4 and higher or by extension |
| fCaps.fStencilWrapOpsSupport = (this->glVersion() >= GR_GL_VER(1,4)) || |
| this->hasExtension("GL_EXT_stencil_wrap"); |
| } else { |
| // ES 2 has two sided stencil and stencil wrap |
| fCaps.fTwoSidedStencilSupport = true; |
| fCaps.fStencilWrapOpsSupport = true; |
| } |
| |
| if (kDesktop_GrGLBinding == this->glBinding()) { |
| fCaps.fBufferLockSupport = true; // we require VBO support and the desktop VBO |
| // extension includes glMapBuffer. |
| } else { |
| fCaps.fBufferLockSupport = this->hasExtension("GL_OES_mapbuffer"); |
| } |
| |
| if (kDesktop_GrGLBinding == this->glBinding()) { |
| if (this->glVersion() >= GR_GL_VER(2,0) || |
| this->hasExtension("GL_ARB_texture_non_power_of_two")) { |
| fCaps.fNPOTTextureTileSupport = true; |
| } else { |
| fCaps.fNPOTTextureTileSupport = false; |
| } |
| } else { |
| // Unextended ES2 supports NPOT textures with clamp_to_edge and non-mip filters only |
| fCaps.fNPOTTextureTileSupport = this->hasExtension("GL_OES_texture_npot"); |
| } |
| |
| fCaps.fHWAALineSupport = (kDesktop_GrGLBinding == this->glBinding()); |
| |
| //////////////////////////////////////////////////////////////////////////// |
| // Experiments to determine limitations that can't be queried. |
| // TODO: Make these a preprocess that generate some compile time constants. |
| // TODO: probe once at startup, rather than once per context creation. |
| |
| GR_GL_GetIntegerv(gl, GR_GL_MAX_TEXTURE_SIZE, &fCaps.fMaxTextureSize); |
| GR_GL_GetIntegerv(gl, GR_GL_MAX_RENDERBUFFER_SIZE, &fCaps.fMaxRenderTargetSize); |
| // Our render targets are always created with textures as the color |
| // attachment, hence this min: |
| fCaps.fMaxRenderTargetSize = GrMin(fCaps.fMaxTextureSize, fCaps.fMaxRenderTargetSize); |
| |
| fCaps.fFSAASupport = GrGLCaps::kNone_MSFBOType != this->glCaps().msFBOType(); |
| } |
| |
| bool GrGpuGL::canPreserveReadWriteUnpremulPixels() { |
| if (kUnknown_CanPreserveUnpremulRoundtrip == |
| fCanPreserveUnpremulRoundtrip) { |
| |
| SkAutoTMalloc<uint32_t> data(256 * 256 * 3); |
| uint32_t* srcData = data.get(); |
| uint32_t* firstRead = data.get() + 256 * 256; |
| uint32_t* secondRead = data.get() + 2 * 256 * 256; |
| |
| for (int y = 0; y < 256; ++y) { |
| for (int x = 0; x < 256; ++x) { |
| uint8_t* color = reinterpret_cast<uint8_t*>(&srcData[256*y + x]); |
| color[3] = y; |
| color[2] = x; |
| color[1] = x; |
| color[0] = x; |
| } |
| } |
| |
| // We have broader support for read/write pixels on render targets |
| // than on textures. |
| GrTextureDesc dstDesc; |
| dstDesc.fFlags = kRenderTarget_GrTextureFlagBit | |
| kNoStencil_GrTextureFlagBit; |
| dstDesc.fWidth = 256; |
| dstDesc.fHeight = 256; |
| dstDesc.fConfig = kRGBA_8888_PM_GrPixelConfig; |
| dstDesc.fSampleCnt = 0; |
| |
| SkAutoTUnref<GrTexture> dstTex(this->createTexture(dstDesc, NULL, 0)); |
| if (!dstTex.get()) { |
| return false; |
| } |
| GrRenderTarget* rt = dstTex.get()->asRenderTarget(); |
| GrAssert(NULL != rt); |
| |
| bool failed = true; |
| static const UnpremulConversion gMethods[] = { |
| kUpOnWrite_DownOnRead_UnpremulConversion, |
| kDownOnWrite_UpOnRead_UnpremulConversion, |
| }; |
| |
| // pretend that we can do the roundtrip to avoid recursive calls to |
| // this function |
| fCanPreserveUnpremulRoundtrip = kYes_CanPreserveUnpremulRoundtrip; |
| for (size_t i = 0; i < GR_ARRAY_COUNT(gMethods) && failed; ++i) { |
| fUnpremulConversion = gMethods[i]; |
| rt->writePixels(0, 0, |
| 256, 256, |
| kRGBA_8888_UPM_GrPixelConfig, srcData, 0); |
| rt->readPixels(0, 0, |
| 256, 256, |
| kRGBA_8888_UPM_GrPixelConfig, firstRead, 0); |
| rt->writePixels(0, 0, |
| 256, 256, |
| kRGBA_8888_UPM_GrPixelConfig, firstRead, 0); |
| rt->readPixels(0, 0, |
| 256, 256, |
| kRGBA_8888_UPM_GrPixelConfig, secondRead, 0); |
| failed = false; |
| for (int j = 0; j < 256 * 256; ++j) { |
| if (firstRead[j] != secondRead[j]) { |
| failed = true; |
| break; |
| } |
| } |
| } |
| fCanPreserveUnpremulRoundtrip = failed ? |
| kNo_CanPreserveUnpremulRoundtrip : |
| kYes_CanPreserveUnpremulRoundtrip; |
| } |
| |
| if (kYes_CanPreserveUnpremulRoundtrip == fCanPreserveUnpremulRoundtrip) { |
| return true; |
| } else { |
| return false; |
| } |
| } |
| |
| GrPixelConfig GrGpuGL::preferredReadPixelsConfig(GrPixelConfig config) const { |
| if (GR_GL_RGBA_8888_PIXEL_OPS_SLOW && GrPixelConfigIsRGBA8888(config)) { |
| return GrPixelConfigSwapRAndB(config); |
| } else { |
| return config; |
| } |
| } |
| |
| GrPixelConfig GrGpuGL::preferredWritePixelsConfig(GrPixelConfig config) const { |
| if (GR_GL_RGBA_8888_PIXEL_OPS_SLOW && GrPixelConfigIsRGBA8888(config)) { |
| return GrPixelConfigSwapRAndB(config); |
| } else { |
| return config; |
| } |
| } |
| |
| bool GrGpuGL::fullReadPixelsIsFasterThanPartial() const { |
| return SkToBool(GR_GL_FULL_READPIXELS_FASTER_THAN_PARTIAL); |
| } |
| |
| void GrGpuGL::onResetContext() { |
| if (gPrintStartupSpew && !fPrintedCaps) { |
| fPrintedCaps = true; |
| this->getCaps().print(); |
| this->glCaps().print(); |
| } |
| |
| // We detect cases when blending is effectively off |
| fHWBlendDisabled = false; |
| GL_CALL(Enable(GR_GL_BLEND)); |
| |
| // we don't use the zb at all |
| GL_CALL(Disable(GR_GL_DEPTH_TEST)); |
| GL_CALL(DepthMask(GR_GL_FALSE)); |
| |
| GL_CALL(Disable(GR_GL_CULL_FACE)); |
| GL_CALL(FrontFace(GR_GL_CCW)); |
| fHWDrawState.setDrawFace(GrDrawState::kBoth_DrawFace); |
| |
| GL_CALL(Disable(GR_GL_DITHER)); |
| if (kDesktop_GrGLBinding == this->glBinding()) { |
| GL_CALL(Disable(GR_GL_LINE_SMOOTH)); |
| GL_CALL(Disable(GR_GL_POINT_SMOOTH)); |
| GL_CALL(Disable(GR_GL_MULTISAMPLE)); |
| fHWAAState.fMSAAEnabled = false; |
| fHWAAState.fSmoothLineEnabled = false; |
| } |
| |
| GL_CALL(ColorMask(GR_GL_TRUE, GR_GL_TRUE, GR_GL_TRUE, GR_GL_TRUE)); |
| fHWDrawState.resetStateFlags(); |
| |
| // we only ever use lines in hairline mode |
| GL_CALL(LineWidth(1)); |
| |
| // invalid |
| fActiveTextureUnitIdx = -1; |
| |
| // illegal values |
| fHWDrawState.setBlendFunc((GrBlendCoeff)0xFF, (GrBlendCoeff)0xFF); |
| |
| fHWDrawState.setBlendConstant(0x00000000); |
| GL_CALL(BlendColor(0,0,0,0)); |
| |
| fHWDrawState.setColor(GrColor_ILLEGAL); |
| |
| fHWDrawState.setViewMatrix(GrMatrix::InvalidMatrix()); |
| |
| for (int s = 0; s < GrDrawState::kNumStages; ++s) { |
| fHWDrawState.setTexture(s, NULL); |
| fHWDrawState.sampler(s)->setRadial2Params(-GR_ScalarMax, |
| -GR_ScalarMax, |
| true); |
| *fHWDrawState.sampler(s)->matrix() = GrMatrix::InvalidMatrix(); |
| fHWDrawState.sampler(s)->setConvolutionParams(0, NULL); |
| } |
| |
| fHWBounds.fScissorRect.invalidate(); |
| fHWBounds.fScissorEnabled = false; |
| GL_CALL(Disable(GR_GL_SCISSOR_TEST)); |
| fHWBounds.fViewportRect.invalidate(); |
| |
| fHWDrawState.stencil()->invalidate(); |
| fHWStencilClip = false; |
| fClipInStencil = false; |
| |
| fHWGeometryState.fIndexBuffer = NULL; |
| fHWGeometryState.fVertexBuffer = NULL; |
| |
| fHWGeometryState.fArrayPtrsDirty = true; |
| |
| GL_CALL(ColorMask(GR_GL_TRUE, GR_GL_TRUE, GR_GL_TRUE, GR_GL_TRUE)); |
| fHWDrawState.setRenderTarget(NULL); |
| |
| // we assume these values |
| if (this->glCaps().unpackRowLengthSupport()) { |
| GL_CALL(PixelStorei(GR_GL_UNPACK_ROW_LENGTH, 0)); |
| } |
| if (this->glCaps().packRowLengthSupport()) { |
| GL_CALL(PixelStorei(GR_GL_PACK_ROW_LENGTH, 0)); |
| } |
| if (this->glCaps().unpackFlipYSupport()) { |
| GL_CALL(PixelStorei(GR_GL_UNPACK_FLIP_Y, GR_GL_FALSE)); |
| } |
| if (this->glCaps().packFlipYSupport()) { |
| GL_CALL(PixelStorei(GR_GL_PACK_REVERSE_ROW_ORDER, GR_GL_FALSE)); |
| } |
| } |
| |
| GrTexture* GrGpuGL::onCreatePlatformTexture(const GrPlatformTextureDesc& desc) { |
| GrGLTexture::Desc glTexDesc; |
| if (!configToGLFormats(desc.fConfig, false, NULL, NULL, NULL)) { |
| return NULL; |
| } |
| |
| glTexDesc.fWidth = desc.fWidth; |
| glTexDesc.fHeight = desc.fHeight; |
| glTexDesc.fConfig = desc.fConfig; |
| glTexDesc.fTextureID = static_cast<GrGLuint>(desc.fTextureHandle); |
| glTexDesc.fOwnsID = false; |
| glTexDesc.fOrientation = GrGLTexture::kBottomUp_Orientation; |
| |
| GrGLTexture* texture = NULL; |
| if (desc.fFlags & kRenderTarget_GrPlatformTextureFlag) { |
| GrGLRenderTarget::Desc glRTDesc; |
| glRTDesc.fRTFBOID = 0; |
| glRTDesc.fTexFBOID = 0; |
| glRTDesc.fMSColorRenderbufferID = 0; |
| glRTDesc.fOwnIDs = true; |
| glRTDesc.fConfig = desc.fConfig; |
| glRTDesc.fSampleCnt = desc.fSampleCnt; |
| if (!this->createRenderTargetObjects(glTexDesc.fWidth, |
| glTexDesc.fHeight, |
| glTexDesc.fTextureID, |
| &glRTDesc)) { |
| return NULL; |
| } |
| texture = new GrGLTexture(this, glTexDesc, glRTDesc); |
| } else { |
| texture = new GrGLTexture(this, glTexDesc); |
| } |
| if (NULL == texture) { |
| return NULL; |
| } |
| |
| this->setSpareTextureUnit(); |
| return texture; |
| } |
| |
| GrRenderTarget* GrGpuGL::onCreatePlatformRenderTarget(const GrPlatformRenderTargetDesc& desc) { |
| GrGLRenderTarget::Desc glDesc; |
| glDesc.fConfig = desc.fConfig; |
| glDesc.fRTFBOID = static_cast<GrGLuint>(desc.fRenderTargetHandle); |
| glDesc.fMSColorRenderbufferID = 0; |
| glDesc.fTexFBOID = GrGLRenderTarget::kUnresolvableFBOID; |
| glDesc.fSampleCnt = desc.fSampleCnt; |
| glDesc.fOwnIDs = false; |
| GrGLIRect viewport; |
| viewport.fLeft = 0; |
| viewport.fBottom = 0; |
| viewport.fWidth = desc.fWidth; |
| viewport.fHeight = desc.fHeight; |
| |
| GrRenderTarget* tgt = new GrGLRenderTarget(this, glDesc, viewport); |
| if (desc.fStencilBits) { |
| GrGLStencilBuffer::Format format; |
| format.fInternalFormat = GrGLStencilBuffer::kUnknownInternalFormat; |
| format.fPacked = false; |
| format.fStencilBits = desc.fStencilBits; |
| format.fTotalBits = desc.fStencilBits; |
| GrGLStencilBuffer* sb = new GrGLStencilBuffer(this, |
| 0, |
| desc.fWidth, |
| desc.fHeight, |
| desc.fSampleCnt, |
| format); |
| tgt->setStencilBuffer(sb); |
| sb->unref(); |
| } |
| return tgt; |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| void GrGpuGL::onWriteTexturePixels(GrTexture* texture, |
| int left, int top, int width, int height, |
| GrPixelConfig config, const void* buffer, |
| size_t rowBytes) { |
| if (NULL == buffer) { |
| return; |
| } |
| GrGLTexture* glTex = static_cast<GrGLTexture*>(texture); |
| |
| this->setSpareTextureUnit(); |
| GL_CALL(BindTexture(GR_GL_TEXTURE_2D, glTex->textureID())); |
| GrGLTexture::Desc desc; |
| desc.fConfig = glTex->config(); |
| desc.fWidth = glTex->width(); |
| desc.fHeight = glTex->height(); |
| desc.fOrientation = glTex->orientation(); |
| desc.fTextureID = glTex->textureID(); |
| |
| this->uploadTexData(desc, false, |
| left, top, width, height, |
| config, buffer, rowBytes); |
| } |
| |
| namespace { |
| bool adjust_pixel_ops_params(int surfaceWidth, |
| int surfaceHeight, |
| size_t bpp, |
| int* left, int* top, int* width, int* height, |
| const void** data, |
| size_t* rowBytes) { |
| if (!*rowBytes) { |
| *rowBytes = *width * bpp; |
| } |
| |
| GrIRect subRect = GrIRect::MakeXYWH(*left, *top, *width, *height); |
| GrIRect bounds = GrIRect::MakeWH(surfaceWidth, surfaceHeight); |
| |
| if (!subRect.intersect(bounds)) { |
| return false; |
| } |
| *data = reinterpret_cast<const void*>(reinterpret_cast<intptr_t>(*data) + |
| (subRect.fTop - *top) * *rowBytes + (subRect.fLeft - *left) * bpp); |
| |
| *left = subRect.fLeft; |
| *top = subRect.fTop; |
| *width = subRect.width(); |
| *height = subRect.height(); |
| return true; |
| } |
| } |
| |
| bool GrGpuGL::uploadTexData(const GrGLTexture::Desc& desc, |
| bool isNewTexture, |
| int left, int top, int width, int height, |
| GrPixelConfig dataConfig, |
| const void* data, |
| size_t rowBytes) { |
| GrAssert(NULL != data || isNewTexture); |
| |
| size_t bpp = GrBytesPerPixel(dataConfig); |
| if (!adjust_pixel_ops_params(desc.fWidth, desc.fHeight, bpp, &left, &top, |
| &width, &height, &data, &rowBytes)) { |
| return false; |
| } |
| size_t trimRowBytes = width * bpp; |
| |
| // in case we need a temporary, trimmed copy of the src pixels |
| SkAutoSMalloc<128 * 128> tempStorage; |
| |
| bool useTexStorage = isNewTexture && |
| this->glCaps().texStorageSupport(); |
| if (useTexStorage) { |
| if (kDesktop_GrGLBinding == this->glBinding()) { |
| // 565 is not a sized internal format on desktop GL. So on desktop |
| // with 565 we always use an unsized internal format to let the |
| // system pick the best sized format to convert the 565 data to. |
| // Since glTexStorage only allows sized internal formats we will |
| // instead fallback to glTexImage2D. |
| useTexStorage = desc.fConfig != kRGB_565_GrPixelConfig; |
| } else { |
| // ES doesn't allow paletted textures to be used with tex storage |
| useTexStorage = desc.fConfig != kIndex_8_GrPixelConfig; |
| } |
| } |
| |
| GrGLenum internalFormat; |
| GrGLenum externalFormat; |
| GrGLenum externalType; |
| // glTexStorage requires sized internal formats on both desktop and ES. ES |
| // glTexImage requires an unsized format. |
| if (!this->configToGLFormats(dataConfig, useTexStorage, &internalFormat, |
| &externalFormat, &externalType)) { |
| return false; |
| } |
| |
| if (!isNewTexture && GR_GL_PALETTE8_RGBA8 == internalFormat) { |
| // paletted textures cannot be updated |
| return false; |
| } |
| |
| /* |
| * check whether to allocate a temporary buffer for flipping y or |
| * because our srcData has extra bytes past each row. If so, we need |
| * to trim those off here, since GL ES may not let us specify |
| * GL_UNPACK_ROW_LENGTH. |
| */ |
| bool restoreGLRowLength = false; |
| bool swFlipY = false; |
| bool glFlipY = false; |
| if (NULL != data) { |
| if (GrGLTexture::kBottomUp_Orientation == desc.fOrientation) { |
| if (this->glCaps().unpackFlipYSupport()) { |
| glFlipY = true; |
| } else { |
| swFlipY = true; |
| } |
| } |
| if (this->glCaps().unpackRowLengthSupport() && !swFlipY) { |
| // can't use this for flipping, only non-neg values allowed. :( |
| if (rowBytes != trimRowBytes) { |
| GrGLint rowLength = static_cast<GrGLint>(rowBytes / bpp); |
| GL_CALL(PixelStorei(GR_GL_UNPACK_ROW_LENGTH, rowLength)); |
| restoreGLRowLength = true; |
| } |
| } else { |
| if (trimRowBytes != rowBytes || swFlipY) { |
| // copy data into our new storage, skipping the trailing bytes |
| size_t trimSize = height * trimRowBytes; |
| const char* src = (const char*)data; |
| if (swFlipY) { |
| src += (height - 1) * rowBytes; |
| } |
| char* dst = (char*)tempStorage.reset(trimSize); |
| for (int y = 0; y < height; y++) { |
| memcpy(dst, src, trimRowBytes); |
| if (swFlipY) { |
| src -= rowBytes; |
| } else { |
| src += rowBytes; |
| } |
| dst += trimRowBytes; |
| } |
| // now point data to our copied version |
| data = tempStorage.get(); |
| } |
| } |
| if (glFlipY) { |
| GL_CALL(PixelStorei(GR_GL_UNPACK_FLIP_Y, GR_GL_TRUE)); |
| } |
| GL_CALL(PixelStorei(GR_GL_UNPACK_ALIGNMENT, static_cast<GrGLint>(bpp))); |
| } |
| bool succeeded = true; |
| if (isNewTexture && |
| 0 == left && 0 == top && |
| desc.fWidth == width && desc.fHeight == height) { |
| CLEAR_ERROR_BEFORE_ALLOC(this->glInterface()); |
| if (useTexStorage) { |
| // We never resize or change formats of textures. We don't use |
| // mipmaps currently. |
| GL_ALLOC_CALL(this->glInterface(), |
| TexStorage2D(GR_GL_TEXTURE_2D, |
| 1, // levels |
| internalFormat, |
| desc.fWidth, desc.fHeight)); |
| } else { |
| if (GR_GL_PALETTE8_RGBA8 == internalFormat) { |
| GrGLsizei imageSize = desc.fWidth * desc.fHeight + |
| kGrColorTableSize; |
| GL_ALLOC_CALL(this->glInterface(), |
| CompressedTexImage2D(GR_GL_TEXTURE_2D, |
| 0, // level |
| internalFormat, |
| desc.fWidth, desc.fHeight, |
| 0, // border |
| imageSize, |
| data)); |
| } else { |
| GL_ALLOC_CALL(this->glInterface(), |
| TexImage2D(GR_GL_TEXTURE_2D, |
| 0, // level |
| internalFormat, |
| desc.fWidth, desc.fHeight, |
| 0, // border |
| externalFormat, externalType, |
| data)); |
| } |
| } |
| GrGLenum error = CHECK_ALLOC_ERROR(this->glInterface()); |
| if (error != GR_GL_NO_ERROR) { |
| succeeded = false; |
| } else { |
| // if we have data and we used TexStorage to create the texture, we |
| // now upload with TexSubImage. |
| if (NULL != data && useTexStorage) { |
| GL_CALL(TexSubImage2D(GR_GL_TEXTURE_2D, |
| 0, // level |
| left, top, |
| width, height, |
| externalFormat, externalType, |
| data)); |
| } |
| } |
| } else { |
| if (swFlipY || glFlipY) { |
| top = desc.fHeight - (top + height); |
| } |
| GL_CALL(TexSubImage2D(GR_GL_TEXTURE_2D, |
| 0, // level |
| left, top, |
| width, height, |
| externalFormat, externalType, data)); |
| } |
| |
| if (restoreGLRowLength) { |
| GrAssert(this->glCaps().unpackRowLengthSupport()); |
| GL_CALL(PixelStorei(GR_GL_UNPACK_ROW_LENGTH, 0)); |
| } |
| if (glFlipY) { |
| GL_CALL(PixelStorei(GR_GL_UNPACK_FLIP_Y, GR_GL_FALSE)); |
| } |
| return succeeded; |
| } |
| |
| bool GrGpuGL::createRenderTargetObjects(int width, int height, |
| GrGLuint texID, |
| GrGLRenderTarget::Desc* desc) { |
| desc->fMSColorRenderbufferID = 0; |
| desc->fRTFBOID = 0; |
| desc->fTexFBOID = 0; |
| desc->fOwnIDs = true; |
| |
| GrGLenum status; |
| GrGLint err; |
| |
| GrGLenum msColorFormat = 0; // suppress warning |
| |
| GL_CALL(GenFramebuffers(1, &desc->fTexFBOID)); |
| if (!desc->fTexFBOID) { |
| goto FAILED; |
| } |
| |
| |
| // If we are using multisampling we will create two FBOS. We render |
| // to one and then resolve to the texture bound to the other. |
| if (desc->fSampleCnt > 0) { |
| if (GrGLCaps::kNone_MSFBOType == this->glCaps().msFBOType()) { |
| goto FAILED; |
| } |
| GL_CALL(GenFramebuffers(1, &desc->fRTFBOID)); |
| GL_CALL(GenRenderbuffers(1, &desc->fMSColorRenderbufferID)); |
| if (!desc->fRTFBOID || |
| !desc->fMSColorRenderbufferID || |
| !this->configToGLFormats(desc->fConfig, |
| // GLES requires sized internal formats |
| kES2_GrGLBinding == this->glBinding(), |
| &msColorFormat, NULL, NULL)) { |
| goto FAILED; |
| } |
| } else { |
| desc->fRTFBOID = desc->fTexFBOID; |
| } |
| |
| // below here we may bind the FBO |
| fHWDrawState.setRenderTarget(NULL); |
| if (desc->fRTFBOID != desc->fTexFBOID) { |
| GrAssert(desc->fSampleCnt > 1); |
| GL_CALL(BindRenderbuffer(GR_GL_RENDERBUFFER, |
| desc->fMSColorRenderbufferID)); |
| CLEAR_ERROR_BEFORE_ALLOC(this->glInterface()); |
| GL_ALLOC_CALL(this->glInterface(), |
| RenderbufferStorageMultisample(GR_GL_RENDERBUFFER, |
| desc->fSampleCnt, |
| msColorFormat, |
| width, height)); |
| err = CHECK_ALLOC_ERROR(this->glInterface()); |
| if (err != GR_GL_NO_ERROR) { |
| goto FAILED; |
| } |
| GL_CALL(BindFramebuffer(GR_GL_FRAMEBUFFER, desc->fRTFBOID)); |
| GL_CALL(FramebufferRenderbuffer(GR_GL_FRAMEBUFFER, |
| GR_GL_COLOR_ATTACHMENT0, |
| GR_GL_RENDERBUFFER, |
| desc->fMSColorRenderbufferID)); |
| if (!this->glCaps().isConfigVerifiedColorAttachment(desc->fConfig)) { |
| GL_CALL_RET(status, CheckFramebufferStatus(GR_GL_FRAMEBUFFER)); |
| if (status != GR_GL_FRAMEBUFFER_COMPLETE) { |
| goto FAILED; |
| } |
| fGLContextInfo.caps().markConfigAsValidColorAttachment( |
| desc->fConfig); |
| } |
| } |
| GL_CALL(BindFramebuffer(GR_GL_FRAMEBUFFER, desc->fTexFBOID)); |
| |
| GL_CALL(FramebufferTexture2D(GR_GL_FRAMEBUFFER, |
| GR_GL_COLOR_ATTACHMENT0, |
| GR_GL_TEXTURE_2D, |
| texID, 0)); |
| if (!this->glCaps().isConfigVerifiedColorAttachment(desc->fConfig)) { |
| GL_CALL_RET(status, CheckFramebufferStatus(GR_GL_FRAMEBUFFER)); |
| if (status != GR_GL_FRAMEBUFFER_COMPLETE) { |
| goto FAILED; |
| } |
| fGLContextInfo.caps().markConfigAsValidColorAttachment(desc->fConfig); |
| } |
| |
| return true; |
| |
| FAILED: |
| if (desc->fMSColorRenderbufferID) { |
| GL_CALL(DeleteRenderbuffers(1, &desc->fMSColorRenderbufferID)); |
| } |
| if (desc->fRTFBOID != desc->fTexFBOID) { |
| GL_CALL(DeleteFramebuffers(1, &desc->fRTFBOID)); |
| } |
| if (desc->fTexFBOID) { |
| GL_CALL(DeleteFramebuffers(1, &desc->fTexFBOID)); |
| } |
| return false; |
| } |
| |
| // good to set a break-point here to know when createTexture fails |
| static GrTexture* return_null_texture() { |
| // GrAssert(!"null texture"); |
| return NULL; |
| } |
| |
| #if GR_DEBUG |
| static size_t as_size_t(int x) { |
| return x; |
| } |
| #endif |
| |
| GrTexture* GrGpuGL::onCreateTexture(const GrTextureDesc& desc, |
| const void* srcData, |
| size_t rowBytes) { |
| |
| #if GR_COLLECT_STATS |
| ++fStats.fTextureCreateCnt; |
| #endif |
| |
| GrGLTexture::Desc glTexDesc; |
| GrGLRenderTarget::Desc glRTDesc; |
| |
| // Attempt to catch un- or wrongly initialized sample counts; |
| GrAssert(desc.fSampleCnt >= 0 && desc.fSampleCnt <= 64); |
| |
| glTexDesc.fWidth = desc.fWidth; |
| glTexDesc.fHeight = desc.fHeight; |
| glTexDesc.fConfig = desc.fConfig; |
| glTexDesc.fOwnsID = true; |
| |
| glRTDesc.fMSColorRenderbufferID = 0; |
| glRTDesc.fRTFBOID = 0; |
| glRTDesc.fTexFBOID = 0; |
| glRTDesc.fOwnIDs = true; |
| glRTDesc.fConfig = glTexDesc.fConfig; |
| |
| bool renderTarget = 0 != (desc.fFlags & kRenderTarget_GrTextureFlagBit); |
| |
| const Caps& caps = this->getCaps(); |
| |
| // We keep GrRenderTargets in GL's normal orientation so that they |
| // can be drawn to by the outside world without the client having |
| // to render upside down. |
| glTexDesc.fOrientation = renderTarget ? GrGLTexture::kBottomUp_Orientation : |
| GrGLTexture::kTopDown_Orientation; |
| |
| glRTDesc.fSampleCnt = desc.fSampleCnt; |
| if (GrGLCaps::kNone_MSFBOType == this->glCaps().msFBOType() && |
| desc.fSampleCnt) { |
| GrPrintf("MSAA RT requested but not supported on this platform."); |
| } |
| |
| if (renderTarget) { |
| if (glTexDesc.fWidth > caps.fMaxRenderTargetSize || |
| glTexDesc.fHeight > caps.fMaxRenderTargetSize) { |
| return return_null_texture(); |
| } |
| } |
| |
| GL_CALL(GenTextures(1, &glTexDesc.fTextureID)); |
| if (renderTarget && this->glCaps().textureUsageSupport()) { |
| // provides a hint about how this texture will be used |
| GL_CALL(TexParameteri(GR_GL_TEXTURE_2D, |
| GR_GL_TEXTURE_USAGE, |
| GR_GL_FRAMEBUFFER_ATTACHMENT)); |
| } |
| if (!glTexDesc.fTextureID) { |
| return return_null_texture(); |
| } |
| |
| this->setSpareTextureUnit(); |
| GL_CALL(BindTexture(GR_GL_TEXTURE_2D, glTexDesc.fTextureID)); |
| |
| // Some drivers like to know filter/wrap before seeing glTexImage2D. Some |
| // drivers have a bug where an FBO won't be complete if it includes a |
| // texture that is not mipmap complete (considering the filter in use). |
| GrGLTexture::TexParams initialTexParams; |
| // we only set a subset here so invalidate first |
| initialTexParams.invalidate(); |
| initialTexParams.fFilter = GR_GL_NEAREST; |
| initialTexParams.fWrapS = GR_GL_CLAMP_TO_EDGE; |
| initialTexParams.fWrapT = GR_GL_CLAMP_TO_EDGE; |
| GL_CALL(TexParameteri(GR_GL_TEXTURE_2D, |
| GR_GL_TEXTURE_MAG_FILTER, |
| initialTexParams.fFilter)); |
| GL_CALL(TexParameteri(GR_GL_TEXTURE_2D, |
| GR_GL_TEXTURE_MIN_FILTER, |
| initialTexParams.fFilter)); |
| GL_CALL(TexParameteri(GR_GL_TEXTURE_2D, |
| GR_GL_TEXTURE_WRAP_S, |
| initialTexParams.fWrapS)); |
| GL_CALL(TexParameteri(GR_GL_TEXTURE_2D, |
| GR_GL_TEXTURE_WRAP_T, |
| initialTexParams.fWrapT)); |
| if (!this->uploadTexData(glTexDesc, true, 0, 0, |
| glTexDesc.fWidth, glTexDesc.fHeight, |
| desc.fConfig, srcData, rowBytes)) { |
| GL_CALL(DeleteTextures(1, &glTexDesc.fTextureID)); |
| return return_null_texture(); |
| } |
| |
| GrGLTexture* tex; |
| if (renderTarget) { |
| #if GR_COLLECT_STATS |
| ++fStats.fRenderTargetCreateCnt; |
| #endif |
| // unbind the texture from the texture unit before binding it to the frame buffer |
| GL_CALL(BindTexture(GR_GL_TEXTURE_2D, 0)); |
| |
| if (!this->createRenderTargetObjects(glTexDesc.fWidth, |
| glTexDesc.fHeight, |
| glTexDesc.fTextureID, |
| &glRTDesc)) { |
| GL_CALL(DeleteTextures(1, &glTexDesc.fTextureID)); |
| return return_null_texture(); |
| } |
| tex = new GrGLTexture(this, glTexDesc, glRTDesc); |
| } else { |
| tex = new GrGLTexture(this, glTexDesc); |
| } |
| tex->setCachedTexParams(initialTexParams, this->getResetTimestamp()); |
| #ifdef TRACE_TEXTURE_CREATION |
| GrPrintf("--- new texture [%d] size=(%d %d) config=%d\n", |
| glTexDesc.fTextureID, desc.fWidth, desc.fHeight, desc.fConfig); |
| #endif |
| return tex; |
| } |
| |
| namespace { |
| |
| const GrGLuint kUnknownBitCount = GrGLStencilBuffer::kUnknownBitCount; |
| |
| void inline get_stencil_rb_sizes(const GrGLInterface* gl, |
| GrGLuint rb, |
| GrGLStencilBuffer::Format* format) { |
| // we shouldn't ever know one size and not the other |
| GrAssert((kUnknownBitCount == format->fStencilBits) == |
| (kUnknownBitCount == format->fTotalBits)); |
| if (kUnknownBitCount == format->fStencilBits) { |
| GR_GL_GetRenderbufferParameteriv(gl, GR_GL_RENDERBUFFER, |
| GR_GL_RENDERBUFFER_STENCIL_SIZE, |
| (GrGLint*)&format->fStencilBits); |
| if (format->fPacked) { |
| GR_GL_GetRenderbufferParameteriv(gl, GR_GL_RENDERBUFFER, |
| GR_GL_RENDERBUFFER_DEPTH_SIZE, |
| (GrGLint*)&format->fTotalBits); |
| format->fTotalBits += format->fStencilBits; |
| } else { |
| format->fTotalBits = format->fStencilBits; |
| } |
| } |
| } |
| } |
| |
| bool GrGpuGL::createStencilBufferForRenderTarget(GrRenderTarget* rt, |
| int width, int height) { |
| |
| // All internally created RTs are also textures. We don't create |
| // SBs for a client's standalone RT (that is RT that isnt also a texture). |
| GrAssert(rt->asTexture()); |
| GrAssert(width >= rt->width()); |
| GrAssert(height >= rt->height()); |
| |
| int samples = rt->numSamples(); |
| GrGLuint sbID; |
| GL_CALL(GenRenderbuffers(1, &sbID)); |
| if (!sbID) { |
| return false; |
| } |
| |
| GrGLStencilBuffer* sb = NULL; |
| |
| int stencilFmtCnt = this->glCaps().stencilFormats().count(); |
| for (int i = 0; i < stencilFmtCnt; ++i) { |
| GL_CALL(BindRenderbuffer(GR_GL_RENDERBUFFER, sbID)); |
| // we start with the last stencil format that succeeded in hopes |
| // that we won't go through this loop more than once after the |
| // first (painful) stencil creation. |
| int sIdx = (i + fLastSuccessfulStencilFmtIdx) % stencilFmtCnt; |
| const GrGLCaps::StencilFormat& sFmt = |
| this->glCaps().stencilFormats()[sIdx]; |
| CLEAR_ERROR_BEFORE_ALLOC(this->glInterface()); |
| // we do this "if" so that we don't call the multisample |
| // version on a GL that doesn't have an MSAA extension. |
| if (samples > 1) { |
| GL_ALLOC_CALL(this->glInterface(), |
| RenderbufferStorageMultisample(GR_GL_RENDERBUFFER, |
| samples, |
| sFmt.fInternalFormat, |
| width, height)); |
| } else { |
| GL_ALLOC_CALL(this->glInterface(), |
| RenderbufferStorage(GR_GL_RENDERBUFFER, |
| sFmt.fInternalFormat, |
| width, height)); |
| } |
| |
| GrGLenum err = CHECK_ALLOC_ERROR(this->glInterface()); |
| if (err == GR_GL_NO_ERROR) { |
| // After sized formats we attempt an unsized format and take whatever |
| // sizes GL gives us. In that case we query for the size. |
| GrGLStencilBuffer::Format format = sFmt; |
| get_stencil_rb_sizes(this->glInterface(), sbID, &format); |
| sb = new GrGLStencilBuffer(this, sbID, width, height, |
| samples, format); |
| if (this->attachStencilBufferToRenderTarget(sb, rt)) { |
| fLastSuccessfulStencilFmtIdx = sIdx; |
| rt->setStencilBuffer(sb); |
| sb->unref(); |
| return true; |
| } |
| sb->abandon(); // otherwise we lose sbID |
| sb->unref(); |
| } |
| } |
| GL_CALL(DeleteRenderbuffers(1, &sbID)); |
| return false; |
| } |
| |
| bool GrGpuGL::attachStencilBufferToRenderTarget(GrStencilBuffer* sb, |
| GrRenderTarget* rt) { |
| GrGLRenderTarget* glrt = (GrGLRenderTarget*) rt; |
| |
| GrGLuint fbo = glrt->renderFBOID(); |
| |
| if (NULL == sb) { |
| if (NULL != rt->getStencilBuffer()) { |
| GL_CALL(FramebufferRenderbuffer(GR_GL_FRAMEBUFFER, |
| GR_GL_STENCIL_ATTACHMENT, |
| GR_GL_RENDERBUFFER, 0)); |
| GL_CALL(FramebufferRenderbuffer(GR_GL_FRAMEBUFFER, |
| GR_GL_DEPTH_ATTACHMENT, |
| GR_GL_RENDERBUFFER, 0)); |
| #if GR_DEBUG |
| GrGLenum status; |
| GL_CALL_RET(status, CheckFramebufferStatus(GR_GL_FRAMEBUFFER)); |
| GrAssert(GR_GL_FRAMEBUFFER_COMPLETE == status); |
| #endif |
| } |
| return true; |
| } else { |
| GrGLStencilBuffer* glsb = (GrGLStencilBuffer*) sb; |
| GrGLuint rb = glsb->renderbufferID(); |
| |
| fHWDrawState.setRenderTarget(NULL); |
| GL_CALL(BindFramebuffer(GR_GL_FRAMEBUFFER, fbo)); |
| GL_CALL(FramebufferRenderbuffer(GR_GL_FRAMEBUFFER, |
| GR_GL_STENCIL_ATTACHMENT, |
| GR_GL_RENDERBUFFER, rb)); |
| if (glsb->format().fPacked) { |
| GL_CALL(FramebufferRenderbuffer(GR_GL_FRAMEBUFFER, |
| GR_GL_DEPTH_ATTACHMENT, |
| GR_GL_RENDERBUFFER, rb)); |
| } else { |
| GL_CALL(FramebufferRenderbuffer(GR_GL_FRAMEBUFFER, |
| GR_GL_DEPTH_ATTACHMENT, |
| GR_GL_RENDERBUFFER, 0)); |
| } |
| |
| GrGLenum status; |
| if (!this->glCaps().isColorConfigAndStencilFormatVerified(rt->config(), |
| glsb->format())) { |
| GL_CALL_RET(status, CheckFramebufferStatus(GR_GL_FRAMEBUFFER)); |
| if (status != GR_GL_FRAMEBUFFER_COMPLETE) { |
| GL_CALL(FramebufferRenderbuffer(GR_GL_FRAMEBUFFER, |
| GR_GL_STENCIL_ATTACHMENT, |
| GR_GL_RENDERBUFFER, 0)); |
| if (glsb->format().fPacked) { |
| GL_CALL(FramebufferRenderbuffer(GR_GL_FRAMEBUFFER, |
| GR_GL_DEPTH_ATTACHMENT, |
| GR_GL_RENDERBUFFER, 0)); |
| } |
| return false; |
| } else { |
| fGLContextInfo.caps().markColorConfigAndStencilFormatAsVerified( |
| rt->config(), |
| glsb->format()); |
| } |
| } |
| return true; |
| } |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| GrVertexBuffer* GrGpuGL::onCreateVertexBuffer(uint32_t size, bool dynamic) { |
| GrGLuint id; |
| GL_CALL(GenBuffers(1, &id)); |
| if (id) { |
| GL_CALL(BindBuffer(GR_GL_ARRAY_BUFFER, id)); |
| fHWGeometryState.fArrayPtrsDirty = true; |
| CLEAR_ERROR_BEFORE_ALLOC(this->glInterface()); |
| // make sure driver can allocate memory for this buffer |
| GL_ALLOC_CALL(this->glInterface(), |
| BufferData(GR_GL_ARRAY_BUFFER, |
| size, |
| NULL, // data ptr |
| dynamic ? GR_GL_DYNAMIC_DRAW : |
| GR_GL_STATIC_DRAW)); |
| if (CHECK_ALLOC_ERROR(this->glInterface()) != GR_GL_NO_ERROR) { |
| GL_CALL(DeleteBuffers(1, &id)); |
| // deleting bound buffer does implicit bind to 0 |
| fHWGeometryState.fVertexBuffer = NULL; |
| return NULL; |
| } |
| GrGLVertexBuffer* vertexBuffer = new GrGLVertexBuffer(this, id, |
| size, dynamic); |
| fHWGeometryState.fVertexBuffer = vertexBuffer; |
| return vertexBuffer; |
| } |
| return NULL; |
| } |
| |
| GrIndexBuffer* GrGpuGL::onCreateIndexBuffer(uint32_t size, bool dynamic) { |
| GrGLuint id; |
| GL_CALL(GenBuffers(1, &id)); |
| if (id) { |
| GL_CALL(BindBuffer(GR_GL_ELEMENT_ARRAY_BUFFER, id)); |
| CLEAR_ERROR_BEFORE_ALLOC(this->glInterface()); |
| // make sure driver can allocate memory for this buffer |
| GL_ALLOC_CALL(this->glInterface(), |
| BufferData(GR_GL_ELEMENT_ARRAY_BUFFER, |
| size, |
| NULL, // data ptr |
| dynamic ? GR_GL_DYNAMIC_DRAW : |
| GR_GL_STATIC_DRAW)); |
| if (CHECK_ALLOC_ERROR(this->glInterface()) != GR_GL_NO_ERROR) { |
| GL_CALL(DeleteBuffers(1, &id)); |
| // deleting bound buffer does implicit bind to 0 |
| fHWGeometryState.fIndexBuffer = NULL; |
| return NULL; |
| } |
| GrIndexBuffer* indexBuffer = new GrGLIndexBuffer(this, id, |
| size, dynamic); |
| fHWGeometryState.fIndexBuffer = indexBuffer; |
| return indexBuffer; |
| } |
| return NULL; |
| } |
| |
| void GrGpuGL::flushScissor(const GrIRect* rect) { |
| const GrDrawState& drawState = this->getDrawState(); |
| const GrGLRenderTarget* rt = |
| static_cast<const GrGLRenderTarget*>(drawState.getRenderTarget()); |
| |
| GrAssert(NULL != rt); |
| const GrGLIRect& vp = rt->getViewport(); |
| |
| GrGLIRect scissor; |
| if (NULL != rect) { |
| scissor.setRelativeTo(vp, rect->fLeft, rect->fTop, |
| rect->width(), rect->height()); |
| if (scissor.contains(vp)) { |
| rect = NULL; |
| } |
| } |
| |
| if (NULL != rect) { |
| if (fHWBounds.fScissorRect != scissor) { |
| scissor.pushToGLScissor(this->glInterface()); |
| fHWBounds.fScissorRect = scissor; |
| } |
| if (!fHWBounds.fScissorEnabled) { |
| GL_CALL(Enable(GR_GL_SCISSOR_TEST)); |
| fHWBounds.fScissorEnabled = true; |
| } |
| } else { |
| if (fHWBounds.fScissorEnabled) { |
| GL_CALL(Disable(GR_GL_SCISSOR_TEST)); |
| fHWBounds.fScissorEnabled = false; |
| } |
| } |
| } |
| |
| void GrGpuGL::onClear(const GrIRect* rect, GrColor color) { |
| const GrDrawState& drawState = this->getDrawState(); |
| const GrRenderTarget* rt = drawState.getRenderTarget(); |
| // parent class should never let us get here with no RT |
| GrAssert(NULL != rt); |
| |
| GrIRect clippedRect; |
| if (NULL != rect) { |
| // flushScissor expects rect to be clipped to the target. |
| clippedRect = *rect; |
| GrIRect rtRect = SkIRect::MakeWH(rt->width(), rt->height()); |
| if (clippedRect.intersect(rtRect)) { |
| rect = &clippedRect; |
| } else { |
| return; |
| } |
| } |
| this->flushRenderTarget(rect); |
| this->flushScissor(rect); |
| |
| GrGLfloat r, g, b, a; |
| static const GrGLfloat scale255 = 1.f / 255.f; |
| a = GrColorUnpackA(color) * scale255; |
| GrGLfloat scaleRGB = scale255; |
| if (GrPixelConfigIsUnpremultiplied(rt->config())) { |
| scaleRGB *= a; |
| } |
| r = GrColorUnpackR(color) * scaleRGB; |
| g = GrColorUnpackG(color) * scaleRGB; |
| b = GrColorUnpackB(color) * scaleRGB; |
| |
| GL_CALL(ColorMask(GR_GL_TRUE, GR_GL_TRUE, GR_GL_TRUE, GR_GL_TRUE)); |
| fHWDrawState.disableState(GrDrawState::kNoColorWrites_StateBit); |
| GL_CALL(ClearColor(r, g, b, a)); |
| GL_CALL(Clear(GR_GL_COLOR_BUFFER_BIT)); |
| } |
| |
| void GrGpuGL::clearStencil() { |
| if (NULL == this->getDrawState().getRenderTarget()) { |
| return; |
| } |
| |
| this->flushRenderTarget(&GrIRect::EmptyIRect()); |
| |
| if (fHWBounds.fScissorEnabled) { |
| GL_CALL(Disable(GR_GL_SCISSOR_TEST)); |
| fHWBounds.fScissorEnabled = false; |
| } |
| GL_CALL(StencilMask(0xffffffff)); |
| GL_CALL(ClearStencil(0)); |
| GL_CALL(Clear(GR_GL_STENCIL_BUFFER_BIT)); |
| fHWDrawState.stencil()->invalidate(); |
| } |
| |
| void GrGpuGL::clearStencilClip(const GrIRect& rect, bool insideClip) { |
| const GrDrawState& drawState = this->getDrawState(); |
| const GrRenderTarget* rt = drawState.getRenderTarget(); |
| GrAssert(NULL != rt); |
| |
| // this should only be called internally when we know we have a |
| // stencil buffer. |
| GrAssert(NULL != rt->getStencilBuffer()); |
| GrGLint stencilBitCount = rt->getStencilBuffer()->bits(); |
| #if 0 |
| GrAssert(stencilBitCount > 0); |
| GrGLint clipStencilMask = (1 << (stencilBitCount - 1)); |
| #else |
| // we could just clear the clip bit but when we go through |
| // ANGLE a partial stencil mask will cause clears to be |
| // turned into draws. Our contract on GrDrawTarget says that |
| // changing the clip between stencil passes may or may not |
| // zero the client's clip bits. So we just clear the whole thing. |
| static const GrGLint clipStencilMask = ~0; |
| #endif |
| GrGLint value; |
| if (insideClip) { |
| value = (1 << (stencilBitCount - 1)); |
| } else { |
| value = 0; |
| } |
| this->flushRenderTarget(&GrIRect::EmptyIRect()); |
| this->flushScissor(&rect); |
| GL_CALL(StencilMask(clipStencilMask)); |
| GL_CALL(ClearStencil(value)); |
| GL_CALL(Clear(GR_GL_STENCIL_BUFFER_BIT)); |
| fHWDrawState.stencil()->invalidate(); |
| } |
| |
| void GrGpuGL::onForceRenderTargetFlush() { |
| this->flushRenderTarget(&GrIRect::EmptyIRect()); |
| } |
| |
| bool GrGpuGL::readPixelsWillPayForYFlip(GrRenderTarget* renderTarget, |
| int left, int top, |
| int width, int height, |
| GrPixelConfig config, |
| size_t rowBytes) const { |
| // if GL can do the flip then we'll never pay for it. |
| if (this->glCaps().packFlipYSupport()) { |
| return false; |
| } |
| |
| // If we have to do memcpy to handle non-trim rowBytes then we |
| // get the flip for free. Otherwise it costs. |
| if (this->glCaps().packRowLengthSupport()) { |
| return true; |
| } |
| // If we have to do memcpys to handle rowBytes then y-flip is free |
| // Note the rowBytes might be tight to the passed in data, but if data |
| // gets clipped in x to the target the rowBytes will no longer be tight. |
| if (left >= 0 && (left + width) < renderTarget->width()) { |
| return 0 == rowBytes || |
| GrBytesPerPixel(config) * width == rowBytes; |
| } else { |
| return false; |
| } |
| } |
| |
| bool GrGpuGL::onReadPixels(GrRenderTarget* target, |
| int left, int top, |
| int width, int height, |
| GrPixelConfig config, |
| void* buffer, |
| size_t rowBytes, |
| bool invertY) { |
| GrGLenum format; |
| GrGLenum type; |
| if (!this->configToGLFormats(config, false, NULL, &format, &type)) { |
| return false; |
| } |
| size_t bpp = GrBytesPerPixel(config); |
| if (!adjust_pixel_ops_params(target->width(), target->height(), bpp, |
| &left, &top, &width, &height, |
| const_cast<const void**>(&buffer), |
| &rowBytes)) { |
| return false; |
| } |
| |
| // resolve the render target if necessary |
| GrGLRenderTarget* tgt = static_cast<GrGLRenderTarget*>(target); |
| GrDrawState::AutoRenderTargetRestore artr; |
| switch (tgt->getResolveType()) { |
| case GrGLRenderTarget::kCantResolve_ResolveType: |
| return false; |
| case GrGLRenderTarget::kAutoResolves_ResolveType: |
| artr.set(this->drawState(), target); |
| this->flushRenderTarget(&GrIRect::EmptyIRect()); |
| break; |
| case GrGLRenderTarget::kCanResolve_ResolveType: |
| this->onResolveRenderTarget(tgt); |
| // we don't track the state of the READ FBO ID. |
| GL_CALL(BindFramebuffer(GR_GL_READ_FRAMEBUFFER, |
| tgt->textureFBOID())); |
| break; |
| default: |
| GrCrash("Unknown resolve type"); |
| } |
| |
| const GrGLIRect& glvp = tgt->getViewport(); |
| |
| // the read rect is viewport-relative |
| GrGLIRect readRect; |
| readRect.setRelativeTo(glvp, left, top, width, height); |
| |
| size_t tightRowBytes = bpp * width; |
| if (0 == rowBytes) { |
| rowBytes = tightRowBytes; |
| } |
| size_t readDstRowBytes = tightRowBytes; |
| void* readDst = buffer; |
| |
| // determine if GL can read using the passed rowBytes or if we need |
| // a scratch buffer. |
| SkAutoSMalloc<32 * sizeof(GrColor)> scratch; |
| if (rowBytes != tightRowBytes) { |
| if (this->glCaps().packRowLengthSupport()) { |
| GrAssert(!(rowBytes % sizeof(GrColor))); |
| GL_CALL(PixelStorei(GR_GL_PACK_ROW_LENGTH, rowBytes / sizeof(GrColor))); |
| readDstRowBytes = rowBytes; |
| } else { |
| scratch.reset(tightRowBytes * height); |
| readDst = scratch.get(); |
| } |
| } |
| if (!invertY && this->glCaps().packFlipYSupport()) { |
| GL_CALL(PixelStorei(GR_GL_PACK_REVERSE_ROW_ORDER, 1)); |
| } |
| GL_CALL(ReadPixels(readRect.fLeft, readRect.fBottom, |
| readRect.fWidth, readRect.fHeight, |
| format, type, readDst)); |
| if (readDstRowBytes != tightRowBytes) { |
| GrAssert(this->glCaps().packRowLengthSupport()); |
| GL_CALL(PixelStorei(GR_GL_PACK_ROW_LENGTH, 0)); |
| } |
| if (!invertY && this->glCaps().packFlipYSupport()) { |
| GL_CALL(PixelStorei(GR_GL_PACK_REVERSE_ROW_ORDER, 0)); |
| invertY = true; |
| } |
| |
| // now reverse the order of the rows, since GL's are bottom-to-top, but our |
| // API presents top-to-bottom. We must preserve the padding contents. Note |
| // that the above readPixels did not overwrite the padding. |
| if (readDst == buffer) { |
| GrAssert(rowBytes == readDstRowBytes); |
| if (!invertY) { |
| scratch.reset(tightRowBytes); |
| void* tmpRow = scratch.get(); |
| // flip y in-place by rows |
| const int halfY = height >> 1; |
| char* top = reinterpret_cast<char*>(buffer); |
| char* bottom = top + (height - 1) * rowBytes; |
| for (int y = 0; y < halfY; y++) { |
| memcpy(tmpRow, top, tightRowBytes); |
| memcpy(top, bottom, tightRowBytes); |
| memcpy(bottom, tmpRow, tightRowBytes); |
| top += rowBytes; |
| bottom -= rowBytes; |
| } |
| } |
| } else { |
| GrAssert(readDst != buffer); GrAssert(rowBytes != tightRowBytes); |
| // copy from readDst to buffer while flipping y |
| const int halfY = height >> 1; |
| const char* src = reinterpret_cast<const char*>(readDst); |
| char* dst = reinterpret_cast<char*>(buffer); |
| if (!invertY) { |
| dst += (height-1) * rowBytes; |
| } |
| for (int y = 0; y < height; y++) { |
| memcpy(dst, src, tightRowBytes); |
| src += readDstRowBytes; |
| if (invertY) { |
| dst += rowBytes; |
| } else { |
| dst -= rowBytes; |
| } |
| } |
| } |
| return true; |
| } |
| |
| void GrGpuGL::flushRenderTarget(const GrIRect* bound) { |
| |
| GrGLRenderTarget* rt = |
| static_cast<GrGLRenderTarget*>(this->drawState()->getRenderTarget()); |
| GrAssert(NULL != rt); |
| |
| if (fHWDrawState.getRenderTarget() != rt) { |
| GL_CALL(BindFramebuffer(GR_GL_FRAMEBUFFER, rt->renderFBOID())); |
| #if GR_COLLECT_STATS |
| ++fStats.fRenderTargetChngCnt; |
| #endif |
| #if GR_DEBUG |
| GrGLenum status; |
| GL_CALL_RET(status, CheckFramebufferStatus(GR_GL_FRAMEBUFFER)); |
| if (status != GR_GL_FRAMEBUFFER_COMPLETE) { |
| GrPrintf("GrGpuGL::flushRenderTarget glCheckFramebufferStatus %x\n", status); |
| } |
| #endif |
| fDirtyFlags.fRenderTargetChanged = true; |
| fHWDrawState.setRenderTarget(rt); |
| const GrGLIRect& vp = rt->getViewport(); |
| if (fHWBounds.fViewportRect != vp) { |
| vp.pushToGLViewport(this->glInterface()); |
| fHWBounds.fViewportRect = vp; |
| } |
| } |
| if (NULL == bound || !bound->isEmpty()) { |
| rt->flagAsNeedingResolve(bound); |
| } |
| } |
| |
| GrGLenum gPrimitiveType2GLMode[] = { |
| GR_GL_TRIANGLES, |
| GR_GL_TRIANGLE_STRIP, |
| GR_GL_TRIANGLE_FAN, |
| GR_GL_POINTS, |
| GR_GL_LINES, |
| GR_GL_LINE_STRIP |
| }; |
| |
| #define SWAP_PER_DRAW 0 |
| |
| #if SWAP_PER_DRAW |
| #if GR_MAC_BUILD |
| #include <AGL/agl.h> |
| #elif GR_WIN32_BUILD |
| void SwapBuf() { |
| DWORD procID = GetCurrentProcessId(); |
| HWND hwnd = GetTopWindow(GetDesktopWindow()); |
| while(hwnd) { |
| DWORD wndProcID = 0; |
| GetWindowThreadProcessId(hwnd, &wndProcID); |
| if(wndProcID == procID) { |
| SwapBuffers(GetDC(hwnd)); |
| } |
| hwnd = GetNextWindow(hwnd, GW_HWNDNEXT); |
| } |
| } |
| #endif |
| #endif |
| |
| void GrGpuGL::onGpuDrawIndexed(GrPrimitiveType type, |
| uint32_t startVertex, |
| uint32_t startIndex, |
| uint32_t vertexCount, |
| uint32_t indexCount) { |
| GrAssert((size_t)type < GR_ARRAY_COUNT(gPrimitiveType2GLMode)); |
| |
| GrGLvoid* indices = (GrGLvoid*)(sizeof(uint16_t) * startIndex); |
| |
| GrAssert(NULL != fHWGeometryState.fIndexBuffer); |
| GrAssert(NULL != fHWGeometryState.fVertexBuffer); |
| |
| // our setupGeometry better have adjusted this to zero since |
| // DrawElements always draws from the begining of the arrays for idx 0. |
| GrAssert(0 == startVertex); |
| |
| GL_CALL(DrawElements(gPrimitiveType2GLMode[type], indexCount, |
| GR_GL_UNSIGNED_SHORT, indices)); |
| #if SWAP_PER_DRAW |
| glFlush(); |
| #if GR_MAC_BUILD |
| aglSwapBuffers(aglGetCurrentContext()); |
| int set_a_break_pt_here = 9; |
| aglSwapBuffers(aglGetCurrentContext()); |
| #elif GR_WIN32_BUILD |
| SwapBuf(); |
| int set_a_break_pt_here = 9; |
| SwapBuf(); |
| #endif |
| #endif |
| } |
| |
| void GrGpuGL::onGpuDrawNonIndexed(GrPrimitiveType type, |
| uint32_t startVertex, |
| uint32_t vertexCount) { |
| GrAssert((size_t)type < GR_ARRAY_COUNT(gPrimitiveType2GLMode)); |
| |
| GrAssert(NULL != fHWGeometryState.fVertexBuffer); |
| |
| // our setupGeometry better have adjusted this to zero. |
| // DrawElements doesn't take an offset so we always adjus the startVertex. |
| GrAssert(0 == startVertex); |
| |
| // pass 0 for parameter first. We have to adjust gl*Pointer() to |
| // account for startVertex in the DrawElements case. So we always |
| // rely on setupGeometry to have accounted for startVertex. |
| GL_CALL(DrawArrays(gPrimitiveType2GLMode[type], 0, vertexCount)); |
| #if SWAP_PER_DRAW |
| glFlush(); |
| #if GR_MAC_BUILD |
| aglSwapBuffers(aglGetCurrentContext()); |
| int set_a_break_pt_here = 9; |
| aglSwapBuffers(aglGetCurrentContext()); |
| #elif GR_WIN32_BUILD |
| SwapBuf(); |
| int set_a_break_pt_here = 9; |
| SwapBuf(); |
| #endif |
| #endif |
| } |
| |
| void GrGpuGL::onResolveRenderTarget(GrRenderTarget* target) { |
| |
| GrGLRenderTarget* rt = static_cast<GrGLRenderTarget*>(target); |
| |
| if (rt->needsResolve()) { |
| GrAssert(GrGLCaps::kNone_MSFBOType != this->glCaps().msFBOType()); |
| GrAssert(rt->textureFBOID() != rt->renderFBOID()); |
| GL_CALL(BindFramebuffer(GR_GL_READ_FRAMEBUFFER, |
| rt->renderFBOID())); |
| GL_CALL(BindFramebuffer(GR_GL_DRAW_FRAMEBUFFER, |
| rt->textureFBOID())); |
| #if GR_COLLECT_STATS |
| ++fStats.fRenderTargetChngCnt; |
| #endif |
| // make sure we go through flushRenderTarget() since we've modified |
| // the bound DRAW FBO ID. |
| fHWDrawState.setRenderTarget(NULL); |
| const GrGLIRect& vp = rt->getViewport(); |
| const GrIRect dirtyRect = rt->getResolveRect(); |
| GrGLIRect r; |
| r.setRelativeTo(vp, dirtyRect.fLeft, dirtyRect.fTop, |
| dirtyRect.width(), dirtyRect.height()); |
| |
| if (GrGLCaps::kAppleES_MSFBOType == this->glCaps().msFBOType()) { |
| // Apple's extension uses the scissor as the blit bounds. |
| GL_CALL(Enable(GR_GL_SCISSOR_TEST)); |
| GL_CALL(Scissor(r.fLeft, r.fBottom, |
| r.fWidth, r.fHeight)); |
| GL_CALL(ResolveMultisampleFramebuffer()); |
| fHWBounds.fScissorRect.invalidate(); |
| fHWBounds.fScissorEnabled = true; |
| } else { |
| if (GrGLCaps::kDesktopARB_MSFBOType != this->glCaps().msFBOType()) { |
| // this respects the scissor during the blit, so disable it. |
| GrAssert(GrGLCaps::kDesktopEXT_MSFBOType == |
| this->glCaps().msFBOType()); |
| this->flushScissor(NULL); |
| } |
| int right = r.fLeft + r.fWidth; |
| int top = r.fBottom + r.fHeight; |
| GL_CALL(BlitFramebuffer(r.fLeft, r.fBottom, right, top, |
| r.fLeft, r.fBottom, right, top, |
| GR_GL_COLOR_BUFFER_BIT, GR_GL_NEAREST)); |
| } |
| rt->flagAsResolved(); |
| } |
| } |
| |
| static const GrGLenum grToGLStencilFunc[] = { |
| GR_GL_ALWAYS, // kAlways_StencilFunc |
| GR_GL_NEVER, // kNever_StencilFunc |
| GR_GL_GREATER, // kGreater_StencilFunc |
| GR_GL_GEQUAL, // kGEqual_StencilFunc |
| GR_GL_LESS, // kLess_StencilFunc |
| GR_GL_LEQUAL, // kLEqual_StencilFunc, |
| GR_GL_EQUAL, // kEqual_StencilFunc, |
| GR_GL_NOTEQUAL, // kNotEqual_StencilFunc, |
| }; |
| GR_STATIC_ASSERT(GR_ARRAY_COUNT(grToGLStencilFunc) == kBasicStencilFuncCount); |
| GR_STATIC_ASSERT(0 == kAlways_StencilFunc); |
| GR_STATIC_ASSERT(1 == kNever_StencilFunc); |
| GR_STATIC_ASSERT(2 == kGreater_StencilFunc); |
| GR_STATIC_ASSERT(3 == kGEqual_StencilFunc); |
| GR_STATIC_ASSERT(4 == kLess_StencilFunc); |
| GR_STATIC_ASSERT(5 == kLEqual_StencilFunc); |
| GR_STATIC_ASSERT(6 == kEqual_StencilFunc); |
| GR_STATIC_ASSERT(7 == kNotEqual_StencilFunc); |
| |
| static const GrGLenum grToGLStencilOp[] = { |
| GR_GL_KEEP, // kKeep_StencilOp |
| GR_GL_REPLACE, // kReplace_StencilOp |
| GR_GL_INCR_WRAP, // kIncWrap_StencilOp |
| GR_GL_INCR, // kIncClamp_StencilOp |
| GR_GL_DECR_WRAP, // kDecWrap_StencilOp |
| GR_GL_DECR, // kDecClamp_StencilOp |
| GR_GL_ZERO, // kZero_StencilOp |
| GR_GL_INVERT, // kInvert_StencilOp |
| }; |
| GR_STATIC_ASSERT(GR_ARRAY_COUNT(grToGLStencilOp) == kStencilOpCount); |
| GR_STATIC_ASSERT(0 == kKeep_StencilOp); |
| GR_STATIC_ASSERT(1 == kReplace_StencilOp); |
| GR_STATIC_ASSERT(2 == kIncWrap_StencilOp); |
| GR_STATIC_ASSERT(3 == kIncClamp_StencilOp); |
| GR_STATIC_ASSERT(4 == kDecWrap_StencilOp); |
| GR_STATIC_ASSERT(5 == kDecClamp_StencilOp); |
| GR_STATIC_ASSERT(6 == kZero_StencilOp); |
| GR_STATIC_ASSERT(7 == kInvert_StencilOp); |
| |
| void GrGpuGL::flushStencil() { |
| const GrDrawState& drawState = this->getDrawState(); |
| |
| const GrStencilSettings* settings = &drawState.getStencil(); |
| |
| // use stencil for clipping if clipping is enabled and the clip |
| // has been written into the stencil. |
| bool stencilClip = fClipInStencil && drawState.isClipState(); |
| bool drawClipToStencil = |
| drawState.isStateFlagEnabled(kModifyStencilClip_StateBit); |
| bool stencilChange = (fHWDrawState.getStencil() != *settings) || |
| (fHWStencilClip != stencilClip) || |
| (fHWDrawState.isStateFlagEnabled(kModifyStencilClip_StateBit) != |
| drawClipToStencil); |
| |
| if (stencilChange) { |
| |
| // we can't simultaneously perform stencil-clipping and |
| // modify the stencil clip |
| GrAssert(!stencilClip || !drawClipToStencil); |
| |
| if (settings->isDisabled()) { |
| if (stencilClip) { |
| settings = GetClipStencilSettings(); |
| } |
| } |
| |
| if (settings->isDisabled()) { |
| GL_CALL(Disable(GR_GL_STENCIL_TEST)); |
| } else { |
| GL_CALL(Enable(GR_GL_STENCIL_TEST)); |
| #if GR_DEBUG |
| if (!this->getCaps().fStencilWrapOpsSupport) { |
| GrAssert(settings->frontPassOp() != kIncWrap_StencilOp); |
| GrAssert(settings->frontPassOp() != kDecWrap_StencilOp); |
| GrAssert(settings->frontFailOp() != kIncWrap_StencilOp); |
| GrAssert(settings->backFailOp() != kDecWrap_StencilOp); |
| GrAssert(settings->backPassOp() != kIncWrap_StencilOp); |
| GrAssert(settings->backPassOp() != kDecWrap_StencilOp); |
| GrAssert(settings->backFailOp() != kIncWrap_StencilOp); |
| GrAssert(settings->frontFailOp() != kDecWrap_StencilOp); |
| } |
| #endif |
| int stencilBits = 0; |
| GrStencilBuffer* stencilBuffer = |
| drawState.getRenderTarget()->getStencilBuffer(); |
| if (NULL != stencilBuffer) { |
| stencilBits = stencilBuffer->bits(); |
| } |
| // TODO: dynamically attach a stencil buffer |
| GrAssert(stencilBits || settings->isDisabled()); |
| |
| GrGLuint clipStencilMask = 0; |
| GrGLuint userStencilMask = ~0; |
| if (stencilBits > 0) { |
| clipStencilMask = 1 << (stencilBits - 1); |
| userStencilMask = clipStencilMask - 1; |
| } |
| |
| unsigned int frontRef = settings->frontFuncRef(); |
| unsigned int frontMask = settings->frontFuncMask(); |
| unsigned int frontWriteMask = settings->frontWriteMask(); |
| GrGLenum frontFunc; |
| |
| if (drawClipToStencil) { |
| GrAssert(settings->frontFunc() < kBasicStencilFuncCount); |
| frontFunc = grToGLStencilFunc[settings->frontFunc()]; |
| } else { |
| frontFunc = grToGLStencilFunc[ConvertStencilFunc( |
| stencilClip, settings->frontFunc())]; |
| |
| ConvertStencilFuncAndMask(settings->frontFunc(), |
| stencilClip, |
| clipStencilMask, |
| userStencilMask, |
| &frontRef, |
| &frontMask); |
| frontWriteMask &= userStencilMask; |
| } |
| GrAssert((size_t) |
| settings->frontFailOp() < GR_ARRAY_COUNT(grToGLStencilOp)); |
| GrAssert((size_t) |
| settings->frontPassOp() < GR_ARRAY_COUNT(grToGLStencilOp)); |
| GrAssert((size_t) |
| settings->backFailOp() < GR_ARRAY_COUNT(grToGLStencilOp)); |
| GrAssert((size_t) |
| settings->backPassOp() < GR_ARRAY_COUNT(grToGLStencilOp)); |
| if (this->getCaps().fTwoSidedStencilSupport) { |
| GrGLenum backFunc; |
| |
| unsigned int backRef = settings->backFuncRef(); |
| unsigned int backMask = settings->backFuncMask(); |
| unsigned int backWriteMask = settings->backWriteMask(); |
| |
| |
| if (drawClipToStencil) { |
| GrAssert(settings->backFunc() < kBasicStencilFuncCount); |
| backFunc = grToGLStencilFunc[settings->backFunc()]; |
| } else { |
| backFunc = grToGLStencilFunc[ConvertStencilFunc( |
| stencilClip, settings->backFunc())]; |
| ConvertStencilFuncAndMask(settings->backFunc(), |
| stencilClip, |
| clipStencilMask, |
| userStencilMask, |
| &backRef, |
| &backMask); |
| backWriteMask &= userStencilMask; |
| } |
| |
| GL_CALL(StencilFuncSeparate(GR_GL_FRONT, frontFunc, |
| frontRef, frontMask)); |
| GL_CALL(StencilMaskSeparate(GR_GL_FRONT, frontWriteMask)); |
| GL_CALL(StencilFuncSeparate(GR_GL_BACK, backFunc, |
| backRef, backMask)); |
| GL_CALL(StencilMaskSeparate(GR_GL_BACK, backWriteMask)); |
| GL_CALL(StencilOpSeparate(GR_GL_FRONT, |
| grToGLStencilOp[settings->frontFailOp()], |
| grToGLStencilOp[settings->frontPassOp()], |
| grToGLStencilOp[settings->frontPassOp()])); |
| |
| GL_CALL(StencilOpSeparate(GR_GL_BACK, |
| grToGLStencilOp[settings->backFailOp()], |
| grToGLStencilOp[settings->backPassOp()], |
| grToGLStencilOp[settings->backPassOp()])); |
| } else { |
| GL_CALL(StencilFunc(frontFunc, frontRef, frontMask)); |
| GL_CALL(StencilMask(frontWriteMask)); |
| GL_CALL(StencilOp(grToGLStencilOp[settings->frontFailOp()], |
| grToGLStencilOp[settings->frontPassOp()], |
| grToGLStencilOp[settings->frontPassOp()])); |
| } |
| } |
| *fHWDrawState.stencil() = *settings; |
| fHWStencilClip = stencilClip; |
| } |
| } |
| |
| void GrGpuGL::flushAAState(GrPrimitiveType type) { |
| const GrRenderTarget* rt = this->getDrawState().getRenderTarget(); |
| if (kDesktop_GrGLBinding == this->glBinding()) { |
| // ES doesn't support toggling GL_MULTISAMPLE and doesn't have |
| // smooth lines. |
| |
| // we prefer smooth lines over multisampled lines |
| // msaa should be disabled if drawing smooth lines. |
| if (GrIsPrimTypeLines(type)) { |
| bool smooth = this->willUseHWAALines(); |
| if (!fHWAAState.fSmoothLineEnabled && smooth) { |
| GL_CALL(Enable(GR_GL_LINE_SMOOTH)); |
| fHWAAState.fSmoothLineEnabled = true; |
| } else if (fHWAAState.fSmoothLineEnabled && !smooth) { |
| GL_CALL(Disable(GR_GL_LINE_SMOOTH)); |
| fHWAAState.fSmoothLineEnabled = false; |
| } |
| if (rt->isMultisampled() && |
| fHWAAState.fMSAAEnabled) { |
| GL_CALL(Disable(GR_GL_MULTISAMPLE)); |
| fHWAAState.fMSAAEnabled = false; |
| } |
| } else if (rt->isMultisampled() && |
| this->getDrawState().isHWAntialiasState() != |
| fHWAAState.fMSAAEnabled) { |
| if (fHWAAState.fMSAAEnabled) { |
| GL_CALL(Disable(GR_GL_MULTISAMPLE)); |
| fHWAAState.fMSAAEnabled = false; |
| } else { |
| GL_CALL(Enable(GR_GL_MULTISAMPLE)); |
| fHWAAState.fMSAAEnabled = true; |
| } |
| } |
| } |
| } |
| |
| void GrGpuGL::flushBlend(GrPrimitiveType type, |
| GrBlendCoeff srcCoeff, |
| GrBlendCoeff dstCoeff) { |
| if (GrIsPrimTypeLines(type) && this->willUseHWAALines()) { |
| if (fHWBlendDisabled) { |
| GL_CALL(Enable(GR_GL_BLEND)); |
| fHWBlendDisabled = false; |
| } |
| if (kSA_BlendCoeff != fHWDrawState.getSrcBlendCoeff() || |
| kISA_BlendCoeff != fHWDrawState.getDstBlendCoeff()) { |
| GL_CALL(BlendFunc(gXfermodeCoeff2Blend[kSA_BlendCoeff], |
| gXfermodeCoeff2Blend[kISA_BlendCoeff])); |
| fHWDrawState.setBlendFunc(kSA_BlendCoeff, kISA_BlendCoeff); |
| } |
| } else { |
| // any optimization to disable blending should |
| // have already been applied and tweaked the coeffs |
| // to (1, 0). |
| bool blendOff = kOne_BlendCoeff == srcCoeff && |
| kZero_BlendCoeff == dstCoeff; |
| if (fHWBlendDisabled != blendOff) { |
| if (blendOff) { |
| GL_CALL(Disable(GR_GL_BLEND)); |
| } else { |
| GL_CALL(Enable(GR_GL_BLEND)); |
| } |
| fHWBlendDisabled = blendOff; |
| } |
| if (!blendOff) { |
| if (fHWDrawState.getSrcBlendCoeff() != srcCoeff || |
| fHWDrawState.getDstBlendCoeff() != dstCoeff) { |
| GL_CALL(BlendFunc(gXfermodeCoeff2Blend[srcCoeff], |
| gXfermodeCoeff2Blend[dstCoeff])); |
| fHWDrawState.setBlendFunc(srcCoeff, dstCoeff); |
| } |
| GrColor blendConst = this->getDrawState().getBlendConstant(); |
| if ((BlendCoeffReferencesConstant(srcCoeff) || |
| BlendCoeffReferencesConstant(dstCoeff)) && |
| fHWDrawState.getBlendConstant() != blendConst) { |
| |
| float c[] = { |
| GrColorUnpackR(blendConst) / 255.f, |
| GrColorUnpackG(blendConst) / 255.f, |
| GrColorUnpackB(blendConst) / 255.f, |
| GrColorUnpackA(blendConst) / 255.f |
| }; |
| GL_CALL(BlendColor(c[0], c[1], c[2], c[3])); |
| fHWDrawState.setBlendConstant(blendConst); |
| } |
| } |
| } |
| } |
| |
| namespace { |
| |
| unsigned gr_to_gl_filter(GrSamplerState::Filter filter) { |
| switch (filter) { |
| case GrSamplerState::kBilinear_Filter: |
| case GrSamplerState::k4x4Downsample_Filter: |
| return GR_GL_LINEAR; |
| case GrSamplerState::kNearest_Filter: |
| case GrSamplerState::kConvolution_Filter: |
| case GrSamplerState::kErode_Filter: |
| case GrSamplerState::kDilate_Filter: |
| return GR_GL_NEAREST; |
| default: |
| GrAssert(!"Unknown filter type"); |
| return GR_GL_LINEAR; |
| } |
| } |
| |
| // get_swizzle is only called from this .cpp so it is OK to inline it here |
| inline const GrGLenum* get_swizzle(GrPixelConfig config, |
| const GrSamplerState& sampler, |
| const GrGLCaps& glCaps) { |
| if (GrPixelConfigIsAlphaOnly(config)) { |
| if (glCaps.textureRedSupport()) { |
| static const GrGLenum gRedSmear[] = { GR_GL_RED, GR_GL_RED, |
| GR_GL_RED, GR_GL_RED }; |
| return gRedSmear; |
| } else { |
| static const GrGLenum gAlphaSmear[] = { GR_GL_ALPHA, GR_GL_ALPHA, |
| GR_GL_ALPHA, GR_GL_ALPHA }; |
| return gAlphaSmear; |
| } |
| } else if (sampler.swapsRAndB()) { |
| static const GrGLenum gRedBlueSwap[] = { GR_GL_BLUE, GR_GL_GREEN, |
| GR_GL_RED, GR_GL_ALPHA }; |
| return gRedBlueSwap; |
| } else { |
| static const GrGLenum gStraight[] = { GR_GL_RED, GR_GL_GREEN, |
| GR_GL_BLUE, GR_GL_ALPHA }; |
| return gStraight; |
| } |
| } |
| |
| void set_tex_swizzle(GrGLenum swizzle[4], const GrGLInterface* gl) { |
| // should add texparameteri to interface to make 1 instead of 4 calls here |
| GR_GL_CALL(gl, TexParameteri(GR_GL_TEXTURE_2D, |
| GR_GL_TEXTURE_SWIZZLE_R, |
| swizzle[0])); |
| GR_GL_CALL(gl, TexParameteri(GR_GL_TEXTURE_2D, |
| GR_GL_TEXTURE_SWIZZLE_G, |
| swizzle[1])); |
| GR_GL_CALL(gl, TexParameteri(GR_GL_TEXTURE_2D, |
| GR_GL_TEXTURE_SWIZZLE_B, |
| swizzle[2])); |
| GR_GL_CALL(gl, TexParameteri(GR_GL_TEXTURE_2D, |
| GR_GL_TEXTURE_SWIZZLE_A, |
| swizzle[3])); |
| } |
| } |
| |
| bool GrGpuGL::flushGLStateCommon(GrPrimitiveType type) { |
| |
| GrDrawState* drawState = this->drawState(); |
| // GrGpu::setupClipAndFlushState should have already checked this |
| // and bailed if not true. |
| GrAssert(NULL != drawState->getRenderTarget()); |
| |
| for (int s = 0; s < GrDrawState::kNumStages; ++s) { |
| // bind texture and set sampler state |
| if (this->isStageEnabled(s)) { |
| GrGLTexture* nextTexture = |
| static_cast<GrGLTexture*>(drawState->getTexture(s)); |
| |
| // true for now, but maybe not with GrEffect. |
| GrAssert(NULL != nextTexture); |
| // if we created a rt/tex and rendered to it without using a |
| // texture and now we're texuring from the rt it will still be |
| // the last bound texture, but it needs resolving. So keep this |
| // out of the "last != next" check. |
| GrGLRenderTarget* texRT = |
| static_cast<GrGLRenderTarget*>(nextTexture->asRenderTarget()); |
| if (NULL != texRT) { |
| this->onResolveRenderTarget(texRT); |
| } |
| |
| if (fHWDrawState.getTexture(s) != nextTexture) { |
| setTextureUnit(s); |
| GL_CALL(BindTexture(GR_GL_TEXTURE_2D, nextTexture->textureID())); |
| #if GR_COLLECT_STATS |
| ++fStats.fTextureChngCnt; |
| #endif |
| //GrPrintf("---- bindtexture %d\n", nextTexture->textureID()); |
| fHWDrawState.setTexture(s, nextTexture); |
| // The texture matrix has to compensate for texture width/height |
| // and NPOT-embedded-in-POT |
| fDirtyFlags.fTextureChangedMask |= (1 << s); |
| } |
| |
| const GrSamplerState& sampler = drawState->getSampler(s); |
| ResetTimestamp timestamp; |
| const GrGLTexture::TexParams& oldTexParams = |
| nextTexture->getCachedTexParams(×tamp); |
| bool setAll = timestamp < this->getResetTimestamp(); |
| GrGLTexture::TexParams newTexParams; |
| |
| newTexParams.fFilter = gr_to_gl_filter(sampler.getFilter()); |
| |
| const GrGLenum* wraps = GrGLTexture::WrapMode2GLWrap(); |
| newTexParams.fWrapS = wraps[sampler.getWrapX()]; |
| newTexParams.fWrapT = wraps[sampler.getWrapY()]; |
| memcpy(newTexParams.fSwizzleRGBA, |
| get_swizzle(nextTexture->config(), sampler, this->glCaps()), |
| sizeof(newTexParams.fSwizzleRGBA)); |
| if (setAll || newTexParams.fFilter != oldTexParams.fFilter) { |
| setTextureUnit(s); |
| GL_CALL(TexParameteri(GR_GL_TEXTURE_2D, |
| GR_GL_TEXTURE_MAG_FILTER, |
| newTexParams.fFilter)); |
| GL_CALL(TexParameteri(GR_GL_TEXTURE_2D, |
| GR_GL_TEXTURE_MIN_FILTER, |
| newTexParams.fFilter)); |
| } |
| if (setAll || newTexParams.fWrapS != oldTexParams.fWrapS) { |
| setTextureUnit(s); |
| GL_CALL(TexParameteri(GR_GL_TEXTURE_2D, |
| GR_GL_TEXTURE_WRAP_S, |
| newTexParams.fWrapS)); |
| } |
| if (setAll || newTexParams.fWrapT != oldTexParams.fWrapT) { |
| setTextureUnit(s); |
| GL_CALL(TexParameteri(GR_GL_TEXTURE_2D, |
| GR_GL_TEXTURE_WRAP_T, |
| newTexParams.fWrapT)); |
| } |
| if (this->glCaps().textureSwizzleSupport() && |
| (setAll || |
| memcmp(newTexParams.fSwizzleRGBA, |
| oldTexParams.fSwizzleRGBA, |
| sizeof(newTexParams.fSwizzleRGBA)))) { |
| setTextureUnit(s); |
| set_tex_swizzle(newTexParams.fSwizzleRGBA, |
| this->glInterface()); |
| } |
| nextTexture->setCachedTexParams(newTexParams, |
| this->getResetTimestamp()); |
| } |
| } |
| |
| GrIRect* rect = NULL; |
| GrIRect clipBounds; |
| if (drawState->isClipState() && |
| fClip.hasConservativeBounds()) { |
| fClip.getConservativeBounds().roundOut(&clipBounds); |
| rect = &clipBounds; |
| } |
| this->flushRenderTarget(rect); |
| this->flushAAState(type); |
| |
| if (drawState->isDitherState() != fHWDrawState.isDitherState()) { |
| if (drawState->isDitherState()) { |
| GL_CALL(Enable(GR_GL_DITHER)); |
| } else { |
| GL_CALL(Disable(GR_GL_DITHER)); |
| } |
| } |
| |
| if (drawState->isColorWriteDisabled() != |
| fHWDrawState.isColorWriteDisabled()) { |
| GrGLenum mask; |
| if (drawState->isColorWriteDisabled()) { |
| mask = GR_GL_FALSE; |
| } else { |
| mask = GR_GL_TRUE; |
| } |
| GL_CALL(ColorMask(mask, mask, mask, mask)); |
| } |
| |
| if (fHWDrawState.getDrawFace() != drawState->getDrawFace()) { |
| switch (this->getDrawState().getDrawFace()) { |
| case GrDrawState::kCCW_DrawFace: |
| GL_CALL(Enable(GR_GL_CULL_FACE)); |
| GL_CALL(CullFace(GR_GL_BACK)); |
| break; |
| case GrDrawState::kCW_DrawFace: |
| GL_CALL(Enable(GR_GL_CULL_FACE)); |
| GL_CALL(CullFace(GR_GL_FRONT)); |
| break; |
| case GrDrawState::kBoth_DrawFace: |
| GL_CALL(Disable(GR_GL_CULL_FACE)); |
| break; |
| default: |
| GrCrash("Unknown draw face."); |
| } |
| fHWDrawState.setDrawFace(drawState->getDrawFace()); |
| } |
| |
| #if GR_DEBUG |
| // check for circular rendering |
| for (int s = 0; s < GrDrawState::kNumStages; ++s) { |
| GrAssert(!this->isStageEnabled(s) || |
| NULL == drawState->getRenderTarget() || |
| NULL == drawState->getTexture(s) || |
| drawState->getTexture(s)->asRenderTarget() != |
| drawState->getRenderTarget()); |
| } |
| #endif |
| |
| this->flushStencil(); |
| |
| // This copy must happen after flushStencil() is called. flushStencil() |
| // relies on detecting when the kModifyStencilClip_StateBit state has |
| // changed since the last draw. |
| fHWDrawState.copyStateFlags(*drawState); |
| return true; |
| } |
| |
| void GrGpuGL::notifyVertexBufferBind(const GrGLVertexBuffer* buffer) { |
| if (fHWGeometryState.fVertexBuffer != buffer) { |
| fHWGeometryState.fArrayPtrsDirty = true; |
| fHWGeometryState.fVertexBuffer = buffer; |
| } |
| } |
| |
| void GrGpuGL::notifyVertexBufferDelete(const GrGLVertexBuffer* buffer) { |
| if (fHWGeometryState.fVertexBuffer == buffer) { |
| // deleting bound buffer does implied bind to 0 |
| fHWGeometryState.fVertexBuffer = NULL; |
| fHWGeometryState.fArrayPtrsDirty = true; |
| } |
| } |
| |
| void GrGpuGL::notifyIndexBufferBind(const GrGLIndexBuffer* buffer) { |
| fHWGeometryState.fIndexBuffer = buffer; |
| } |
| |
| void GrGpuGL::notifyIndexBufferDelete(const GrGLIndexBuffer* buffer) { |
| if (fHWGeometryState.fIndexBuffer == buffer) { |
| // deleting bound buffer does implied bind to 0 |
| fHWGeometryState.fIndexBuffer = NULL; |
| } |
| } |
| |
| void GrGpuGL::notifyRenderTargetDelete(GrRenderTarget* renderTarget) { |
| GrAssert(NULL != renderTarget); |
| GrDrawState* drawState = this->drawState(); |
| if (drawState->getRenderTarget() == renderTarget) { |
| drawState->setRenderTarget(NULL); |
| } |
| if (fHWDrawState.getRenderTarget() == renderTarget) { |
| fHWDrawState.setRenderTarget(NULL); |
| } |
| } |
| |
| void GrGpuGL::notifyTextureDelete(GrGLTexture* texture) { |
| for (int s = 0; s < GrDrawState::kNumStages; ++s) { |
| GrDrawState* drawState = this->drawState(); |
| if (drawState->getTexture(s) == texture) { |
| this->drawState()->setTexture(s, NULL); |
| } |
| if (fHWDrawState.getTexture(s) == texture) { |
| // deleting bound texture does implied bind to 0 |
| fHWDrawState.setTexture(s, NULL); |
| } |
| } |
| } |
| |
| bool GrGpuGL::configToGLFormats(GrPixelConfig config, |
| bool getSizedInternalFormat, |
| GrGLenum* internalFormat, |
| GrGLenum* externalFormat, |
| GrGLenum* externalType) { |
| GrGLenum dontCare; |
| if (NULL == internalFormat) { |
| internalFormat = &dontCare; |
| } |
| if (NULL == externalFormat) { |
| externalFormat = &dontCare; |
| } |
| if (NULL == externalType) { |
| externalType = &dontCare; |
| } |
| |
| switch (config) { |
| case kRGBA_8888_PM_GrPixelConfig: |
| case kRGBA_8888_UPM_GrPixelConfig: |
| *internalFormat = GR_GL_RGBA; |
| *externalFormat = GR_GL_RGBA; |
| if (getSizedInternalFormat) { |
| *internalFormat = GR_GL_RGBA8; |
| } else { |
| *internalFormat = GR_GL_RGBA; |
| } |
| *externalType = GR_GL_UNSIGNED_BYTE; |
| break; |
| case kBGRA_8888_PM_GrPixelConfig: |
| case kBGRA_8888_UPM_GrPixelConfig: |
| if (!this->glCaps().bgraFormatSupport()) { |
| return false; |
| } |
| if (this->glCaps().bgraIsInternalFormat()) { |
| if (getSizedInternalFormat) { |
| *internalFormat = GR_GL_BGRA8; |
| } else { |
| *internalFormat = GR_GL_BGRA; |
| } |
| } else { |
| if (getSizedInternalFormat) { |
| *internalFormat = GR_GL_RGBA8; |
| } else { |
| *internalFormat = GR_GL_RGBA; |
| } |
| } |
| *externalFormat = GR_GL_BGRA; |
| *externalType = GR_GL_UNSIGNED_BYTE; |
| break; |
| case kRGB_565_GrPixelConfig: |
| *internalFormat = GR_GL_RGB; |
| *externalFormat = GR_GL_RGB; |
| if (getSizedInternalFormat) { |
| if (this->glBinding() == kDesktop_GrGLBinding) { |
| return false; |
| } else { |
| *internalFormat = GR_GL_RGB565; |
| } |
| } else { |
| *internalFormat = GR_GL_RGB; |
| } |
| *externalType = GR_GL_UNSIGNED_SHORT_5_6_5; |
| break; |
| case kRGBA_4444_GrPixelConfig: |
| *internalFormat = GR_GL_RGBA; |
| *externalFormat = GR_GL_RGBA; |
| if (getSizedInternalFormat) { |
| *internalFormat = GR_GL_RGBA4; |
| } else { |
| *internalFormat = GR_GL_RGBA; |
| } |
| *externalType = GR_GL_UNSIGNED_SHORT_4_4_4_4; |
| break; |
| case kIndex_8_GrPixelConfig: |
| if (this->getCaps().f8BitPaletteSupport) { |
| *internalFormat = GR_GL_PALETTE8_RGBA8; |
| // glCompressedTexImage doesn't take external params |
| *externalFormat = GR_GL_PALETTE8_RGBA8; |
| // no sized/unsized internal format distinction here |
| *internalFormat = GR_GL_PALETTE8_RGBA8; |
| // unused with CompressedTexImage |
| *externalType = GR_GL_UNSIGNED_BYTE; |
| } else { |
| return false; |
| } |
| break; |
| case kAlpha_8_GrPixelConfig: |
| if (this->glCaps().textureRedSupport()) { |
| *internalFormat = GR_GL_RED; |
| *externalFormat = GR_GL_RED; |
| if (getSizedInternalFormat) { |
| *internalFormat = GR_GL_R8; |
| } else { |
| *internalFormat = GR_GL_RED; |
| } |
| *externalType = GR_GL_UNSIGNED_BYTE; |
| } else { |
| *internalFormat = GR_GL_ALPHA; |
| *externalFormat = GR_GL_ALPHA; |
| if (getSizedInternalFormat) { |
| *internalFormat = GR_GL_ALPHA8; |
| } else { |
| *internalFormat = GR_GL_ALPHA; |
| } |
| *externalType = GR_GL_UNSIGNED_BYTE; |
| } |
| break; |
| default: |
| return false; |
| } |
| return true; |
| } |
| |
| void GrGpuGL::setTextureUnit(int unit) { |
| GrAssert(unit >= 0 && unit < GrDrawState::kNumStages); |
| if (fActiveTextureUnitIdx != unit) { |
| GL_CALL(ActiveTexture(GR_GL_TEXTURE0 + unit)); |
| fActiveTextureUnitIdx = unit; |
| } |
| } |
| |
| void GrGpuGL::setSpareTextureUnit() { |
| if (fActiveTextureUnitIdx != (GR_GL_TEXTURE0 + SPARE_TEX_UNIT)) { |
| GL_CALL(ActiveTexture(GR_GL_TEXTURE0 + SPARE_TEX_UNIT)); |
| fActiveTextureUnitIdx = SPARE_TEX_UNIT; |
| } |
| } |
| |
| void GrGpuGL::resetDirtyFlags() { |
| Gr_bzero(&fDirtyFlags, sizeof(fDirtyFlags)); |
| } |
| |
| void GrGpuGL::setBuffers(bool indexed, |
| int* extraVertexOffset, |
| int* extraIndexOffset) { |
| |
| GrAssert(NULL != extraVertexOffset); |
| |
| const GeometryPoolState& geoPoolState = this->getGeomPoolState(); |
| |
| GrGLVertexBuffer* vbuf; |
| switch (this->getGeomSrc().fVertexSrc) { |
| case kBuffer_GeometrySrcType: |
| *extraVertexOffset = 0; |
| vbuf = (GrGLVertexBuffer*) this->getGeomSrc().fVertexBuffer; |
| break; |
| case kArray_GeometrySrcType: |
| case kReserved_GeometrySrcType: |
| this->finalizeReservedVertices(); |
| *extraVertexOffset = geoPoolState.fPoolStartVertex; |
| vbuf = (GrGLVertexBuffer*) geoPoolState.fPoolVertexBuffer; |
| break; |
| default: |
| vbuf = NULL; // suppress warning |
| GrCrash("Unknown geometry src type!"); |
| } |
| |
| GrAssert(NULL != vbuf); |
| GrAssert(!vbuf->isLocked()); |
| if (fHWGeometryState.fVertexBuffer != vbuf) { |
| GL_CALL(BindBuffer(GR_GL_ARRAY_BUFFER, vbuf->bufferID())); |
| fHWGeometryState.fArrayPtrsDirty = true; |
| fHWGeometryState.fVertexBuffer = vbuf; |
| } |
| |
| if (indexed) { |
| GrAssert(NULL != extraIndexOffset); |
| |
| GrGLIndexBuffer* ibuf; |
| switch (this->getGeomSrc().fIndexSrc) { |
| case kBuffer_GeometrySrcType: |
| *extraIndexOffset = 0; |
| ibuf = (GrGLIndexBuffer*)this->getGeomSrc().fIndexBuffer; |
| break; |
| case kArray_GeometrySrcType: |
| case kReserved_GeometrySrcType: |
| this->finalizeReservedIndices(); |
| *extraIndexOffset = geoPoolState.fPoolStartIndex; |
| ibuf = (GrGLIndexBuffer*) geoPoolState.fPoolIndexBuffer; |
| break; |
| default: |
| ibuf = NULL; // suppress warning |
| GrCrash("Unknown geometry src type!"); |
| } |
| |
| GrAssert(NULL != ibuf); |
| GrAssert(!ibuf->isLocked()); |
| if (fHWGeometryState.fIndexBuffer != ibuf) { |
| GL_CALL(BindBuffer(GR_GL_ELEMENT_ARRAY_BUFFER, ibuf->bufferID())); |
| fHWGeometryState.fIndexBuffer = ibuf; |
| } |
| } |
| } |
| |
| int GrGpuGL::getMaxEdges() const { |
| // FIXME: This is a pessimistic estimate based on how many other things |
| // want to add uniforms. This should be centralized somewhere. |
| return GR_CT_MIN(this->glCaps().maxFragmentUniformVectors() - 8, |
| GrDrawState::kMaxEdges); |
| } |
| |