| /* |
| Copyright 2011 Google Inc. |
| |
| Licensed under the Apache License, Version 2.0 (the "License"); |
| you may not use this file except in compliance with the License. |
| You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, software |
| distributed under the License is distributed on an "AS IS" BASIS, |
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| See the License for the specific language governing permissions and |
| limitations under the License. |
| */ |
| |
| #include "GrGpuGL.h" |
| #include "GrMemory.h" |
| #if GR_WIN32_BUILD |
| // need to get wglGetProcAddress |
| #undef WIN32_LEAN_AND_MEAN |
| #define WIN32_LEAN_AND_MEAN 1 |
| #include <windows.h> |
| #undef WIN32_LEAN_AND_MEAN |
| #endif |
| |
| |
| static const GLuint GR_MAX_GLUINT = ~0; |
| static const GLint GR_INVAL_GLINT = ~0; |
| |
| // we use a spare texture unit to avoid |
| // mucking with the state of any of the stages. |
| static const int SPARE_TEX_UNIT = GrGpuGL::kNumStages; |
| |
| #define SKIP_CACHE_CHECK true |
| |
| static const GLenum gXfermodeCoeff2Blend[] = { |
| GL_ZERO, |
| GL_ONE, |
| GL_SRC_COLOR, |
| GL_ONE_MINUS_SRC_COLOR, |
| GL_DST_COLOR, |
| GL_ONE_MINUS_DST_COLOR, |
| GL_SRC_ALPHA, |
| GL_ONE_MINUS_SRC_ALPHA, |
| GL_DST_ALPHA, |
| GL_ONE_MINUS_DST_ALPHA, |
| GL_CONSTANT_COLOR, |
| GL_ONE_MINUS_CONSTANT_COLOR, |
| GL_CONSTANT_ALPHA, |
| GL_ONE_MINUS_CONSTANT_ALPHA, |
| }; |
| |
| bool GrGpuGL::BlendCoefReferencesConstant(GrBlendCoeff coeff) { |
| static const bool gCoeffReferencesBlendConst[] = { |
| false, |
| false, |
| false, |
| false, |
| false, |
| false, |
| false, |
| false, |
| false, |
| false, |
| true, |
| true, |
| true, |
| true, |
| }; |
| return gCoeffReferencesBlendConst[coeff]; |
| GR_STATIC_ASSERT(kBlendCoeffCount == 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(kBlendCoeffCount == GR_ARRAY_COUNT(gXfermodeCoeff2Blend)); |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| void GrGpuGL::AdjustTextureMatrix(const GrGLTexture* texture, |
| GrSamplerState::SampleMode mode, |
| GrMatrix* matrix) { |
| GrAssert(NULL != texture); |
| GrAssert(NULL != matrix); |
| if (GR_Scalar1 != texture->contentScaleX() || |
| GR_Scalar1 != texture->contentScaleY()) { |
| if (GrSamplerState::kRadial_SampleMode == mode) { |
| GrMatrix scale; |
| scale.setScale(texture->contentScaleX(), texture->contentScaleX()); |
| matrix->postConcat(scale); |
| } else if (GrSamplerState::kNormal_SampleMode == mode) { |
| GrMatrix scale; |
| scale.setScale(texture->contentScaleX(), texture->contentScaleY()); |
| matrix->postConcat(scale); |
| } else { |
| GrPrintf("We haven't handled NPOT adjustment for other sample modes!"); |
| } |
| } |
| 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; |
| } |
| if (GR_Scalar1 != texture->contentScaleX() || |
| GR_Scalar1 != texture->contentScaleY()) { |
| 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(int w, int h) { |
| |
| GLint savedFBO; |
| GLint savedTexUnit; |
| GR_GL_GetIntegerv(GL_ACTIVE_TEXTURE, &savedTexUnit); |
| GR_GL_GetIntegerv(GR_FRAMEBUFFER_BINDING, &savedFBO); |
| |
| GR_GL(ActiveTexture(GL_TEXTURE0 + SPARE_TEX_UNIT)); |
| |
| GLuint testFBO; |
| GR_GL(GenFramebuffers(1, &testFBO)); |
| GR_GL(BindFramebuffer(GR_FRAMEBUFFER, testFBO)); |
| GLuint testRTTex; |
| GR_GL(GenTextures(1, &testRTTex)); |
| GR_GL(BindTexture(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(TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST)); |
| GR_GL(TexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, w, h, |
| 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL)); |
| GR_GL(BindTexture(GL_TEXTURE_2D, 0)); |
| GR_GL(FramebufferTexture2D(GR_FRAMEBUFFER, GR_COLOR_ATTACHMENT0, |
| GL_TEXTURE_2D, testRTTex, 0)); |
| GLenum status = GR_GL(CheckFramebufferStatus(GR_FRAMEBUFFER)); |
| GR_GL(DeleteFramebuffers(1, &testFBO)); |
| GR_GL(DeleteTextures(1, &testRTTex)); |
| |
| GR_GL(ActiveTexture(savedTexUnit)); |
| GR_GL(BindFramebuffer(GR_FRAMEBUFFER, savedFBO)); |
| |
| return status == GR_FRAMEBUFFER_COMPLETE; |
| } |
| |
| GrGpuGL::GrGpuGL() { |
| |
| if (gPrintStartupSpew) { |
| GrPrintf("------------------------- create GrGpuGL %p --------------\n", |
| this); |
| GrPrintf("------ VENDOR %s\n", |
| GrGLGetGLInterface()->fGetString(GL_VENDOR)); |
| GrPrintf("------ RENDERER %s\n", |
| GrGLGetGLInterface()->fGetString(GL_RENDERER)); |
| GrPrintf("------ VERSION %s\n", |
| GrGLGetGLInterface()->fGetString(GL_VERSION)); |
| GrPrintf("------ EXTENSIONS\n %s \n", |
| GrGLGetGLInterface()->fGetString(GL_EXTENSIONS)); |
| } |
| |
| GrGLClearErr(); |
| |
| resetDirtyFlags(); |
| |
| GLint 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. |
| #if GR_SUPPORT_GLDESKTOP || GR_SUPPORT_GLES2 |
| GR_GL_GetIntegerv(GL_MAX_TEXTURE_IMAGE_UNITS, &maxTextureUnits); |
| GrAssert(maxTextureUnits > kNumStages); |
| #endif |
| #if GR_SUPPORT_GLDESKTOP || GR_SUPPORT_GLES1 |
| GR_GL_GetIntegerv(GL_MAX_TEXTURE_UNITS, &maxTextureUnits); |
| GrAssert(maxTextureUnits > kNumStages); |
| #endif |
| |
| //////////////////////////////////////////////////////////////////////////// |
| // Check for supported features. |
| |
| int major, minor; |
| gl_version(&major, &minor); |
| |
| GLint numFormats; |
| GR_GL_GetIntegerv(GL_NUM_COMPRESSED_TEXTURE_FORMATS, &numFormats); |
| GrAutoSTMalloc<10, GLint> formats(numFormats); |
| GR_GL_GetIntegerv(GL_COMPRESSED_TEXTURE_FORMATS, formats); |
| for (int i = 0; i < numFormats; ++i) { |
| if (formats[i] == GR_PALETTE8_RGBA8) { |
| f8bitPaletteSupport = true; |
| break; |
| } |
| } |
| |
| if (gPrintStartupSpew) { |
| GrPrintf("Palette8 support: %s\n", (f8bitPaletteSupport ? "YES" : "NO")); |
| } |
| |
| GR_STATIC_ASSERT(0 == kNone_AALevel); |
| GR_STATIC_ASSERT(1 == kLow_AALevel); |
| GR_STATIC_ASSERT(2 == kMed_AALevel); |
| GR_STATIC_ASSERT(3 == kHigh_AALevel); |
| |
| memset(fAASamples, 0, sizeof(fAASamples)); |
| fMSFBOType = kNone_MSFBO; |
| if (has_gl_extension("GL_IMG_multisampled_render_to_texture")) { |
| fMSFBOType = kIMG_MSFBO; |
| if (gPrintStartupSpew) { |
| GrPrintf("MSAA Support: IMG ES EXT.\n"); |
| } |
| } |
| else if (has_gl_extension("GL_APPLE_framebuffer_multisample")) { |
| fMSFBOType = kApple_MSFBO; |
| if (gPrintStartupSpew) { |
| GrPrintf("MSAA Support: APPLE ES EXT.\n"); |
| } |
| } |
| #if GR_SUPPORT_GLDESKTOP |
| else if ((major >= 3) || |
| has_gl_extension("GL_ARB_framebuffer_object") || |
| (has_gl_extension("GL_EXT_framebuffer_multisample") && |
| has_gl_extension("GL_EXT_framebuffer_blit"))) { |
| fMSFBOType = kDesktop_MSFBO; |
| if (gPrintStartupSpew) { |
| GrPrintf("MSAA Support: DESKTOP\n"); |
| } |
| } |
| #endif |
| else { |
| if (gPrintStartupSpew) { |
| GrPrintf("MSAA Support: NONE\n"); |
| } |
| } |
| |
| if (kNone_MSFBO != fMSFBOType) { |
| GLint maxSamples; |
| GLenum maxSampleGetter = (kIMG_MSFBO == fMSFBOType) ? |
| GR_MAX_SAMPLES_IMG : |
| GR_MAX_SAMPLES; |
| GR_GL_GetIntegerv(maxSampleGetter, &maxSamples); |
| if (maxSamples > 1 ) { |
| fAASamples[kNone_AALevel] = 0; |
| fAASamples[kLow_AALevel] = GrMax(2, |
| GrFixedFloorToInt((GR_FixedHalf) * |
| maxSamples)); |
| fAASamples[kMed_AALevel] = GrMax(2, |
| GrFixedFloorToInt(((GR_Fixed1*3)/4) * |
| maxSamples)); |
| fAASamples[kHigh_AALevel] = maxSamples; |
| } |
| if (gPrintStartupSpew) { |
| GrPrintf("\tMax Samples: %d\n", maxSamples); |
| } |
| } |
| |
| #if GR_SUPPORT_GLDESKTOP |
| fHasStencilWrap = (major >= 2 || (major == 1 && minor >= 4)) || |
| has_gl_extension("GL_EXT_stencil_wrap"); |
| #else |
| fHasStencilWrap = (major >= 2) || has_gl_extension("GL_OES_stencil_wrap"); |
| #endif |
| if (gPrintStartupSpew) { |
| GrPrintf("Stencil Wrap: %s\n", (fHasStencilWrap ? "YES" : "NO")); |
| } |
| |
| #if GR_SUPPORT_GLDESKTOP |
| // 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). |
| fTwoSidedStencilSupport = (major >= 2); |
| // supported on GL 1.4 and higher or by extension |
| fStencilWrapOpsSupport = (major > 1) || |
| ((1 == major) && (minor >= 4)) || |
| has_gl_extension("GL_EXT_stencil_wrap"); |
| #else |
| // ES 2 has two sided stencil but 1.1 doesn't. There doesn't seem to be |
| // an ES1 extension. |
| fTwoSidedStencilSupport = (major >= 2); |
| // stencil wrap support is in ES2, ES1 requires extension. |
| fStencilWrapOpsSupport = (major > 1) || |
| has_gl_extension("GL_OES_stencil_wrap"); |
| |
| #endif |
| if (gPrintStartupSpew) { |
| GrPrintf("Stencil Caps: TwoSide: %s, Wrap: %s\n", |
| (fTwoSidedStencilSupport ? "YES" : "NO"), |
| (fStencilWrapOpsSupport ? "YES" : "NO")); |
| } |
| |
| #if GR_SUPPORT_GLDESKTOP |
| fRGBA8Renderbuffer = true; |
| #else |
| fRGBA8Renderbuffer = has_gl_extension("GL_OES_rgb8_rgba8"); |
| #endif |
| if (gPrintStartupSpew) { |
| GrPrintf("RGBA Renderbuffer: %s\n", (fRGBA8Renderbuffer ? "YES" : "NO")); |
| } |
| |
| #if GR_SUPPORT_GLES |
| if (GR_GL_32BPP_COLOR_FORMAT == GR_BGRA) { |
| GrAssert(has_gl_extension("GL_EXT_texture_format_BGRA8888")); |
| } |
| #endif |
| |
| #if GR_SUPPORT_GLDESKTOP |
| fBufferLockSupport = true; // we require VBO support and the desktop VBO |
| // extension includes glMapBuffer. |
| #else |
| fBufferLockSupport = has_gl_extension("GL_OES_mapbuffer"); |
| #endif |
| |
| if (gPrintStartupSpew) { |
| GrPrintf("Map Buffer: %s\n", (fBufferLockSupport ? "YES" : "NO")); |
| } |
| |
| #if GR_SUPPORT_GLDESKTOP |
| if (major >= 2 || has_gl_extension("GL_ARB_texture_non_power_of_two")) { |
| fNPOTTextureTileSupport = true; |
| fNPOTTextureSupport = true; |
| } else { |
| fNPOTTextureTileSupport = false; |
| fNPOTTextureSupport = false; |
| } |
| #else |
| if (major >= 2) { |
| fNPOTTextureSupport = true; |
| fNPOTTextureTileSupport = has_gl_extension("GL_OES_texture_npot"); |
| } else { |
| fNPOTTextureSupport = has_gl_extension("GL_APPLE_texture_2D_limited_npot"); |
| fNPOTTextureTileSupport = false; |
| } |
| #endif |
| |
| //////////////////////////////////////////////////////////////////////////// |
| // Experiments to determine limitations that can't be queried. TODO: Make |
| // these a preprocess that generate some compile time constants. |
| |
| // sanity check to make sure we can at least create an FBO from a POT texture |
| |
| bool simpleFBOSuccess = fbo_test(128, 128); |
| if (gPrintStartupSpew) { |
| if (!simpleFBOSuccess) { |
| GrPrintf("FBO Sanity Test: FAILED\n"); |
| } else { |
| GrPrintf("FBO Sanity Test: PASSED\n"); |
| } |
| } |
| GrAssert(simpleFBOSuccess); |
| |
| /* Experimentation has found that some GLs that support NPOT textures |
| do not support FBOs with a NPOT texture. They report "unsupported" FBO |
| status. I don't know how to explicitly query for this. Do an |
| experiment. Note they may support NPOT with a renderbuffer but not a |
| texture. Presumably, the implementation bloats the renderbuffer |
| internally to the next POT. |
| */ |
| bool fNPOTRenderTargetSupport = false; |
| if (fNPOTTextureSupport) { |
| fNPOTRenderTargetSupport = fbo_test(200, 200); |
| } |
| |
| if (gPrintStartupSpew) { |
| if (fNPOTTextureSupport) { |
| GrPrintf("NPOT textures supported\n"); |
| if (fNPOTTextureTileSupport) { |
| GrPrintf("NPOT texture tiling supported\n"); |
| } else { |
| GrPrintf("NPOT texture tiling NOT supported\n"); |
| } |
| if (fNPOTRenderTargetSupport) { |
| GrPrintf("NPOT render targets supported\n"); |
| } else { |
| GrPrintf("NPOT render targets NOT supported\n"); |
| } |
| } else { |
| GrPrintf("NPOT textures NOT supported\n"); |
| } |
| } |
| |
| /* The iPhone 4 has a restriction that for an FBO with texture color |
| attachment with height <= 8 then the width must be <= height. Here |
| we look for such a limitation. |
| */ |
| fMinRenderTargetHeight = GR_INVAL_GLINT; |
| GLint maxRenderSize; |
| GR_GL_GetIntegerv(GR_MAX_RENDERBUFFER_SIZE, &maxRenderSize); |
| |
| if (gPrintStartupSpew) { |
| GrPrintf("Small height FBO texture experiments\n"); |
| } |
| |
| for (GLuint i = 1; i <= 256; fNPOTRenderTargetSupport ? ++i : i *= 2) { |
| GLuint w = maxRenderSize; |
| GLuint h = i; |
| if (fbo_test(w, h)) { |
| if (gPrintStartupSpew) { |
| GrPrintf("\t[%d, %d]: PASSED\n", w, h); |
| } |
| fMinRenderTargetHeight = i; |
| break; |
| } else { |
| if (gPrintStartupSpew) { |
| GrPrintf("\t[%d, %d]: FAILED\n", w, h); |
| } |
| } |
| } |
| GrAssert(GR_INVAL_GLINT != fMinRenderTargetHeight); |
| |
| if (gPrintStartupSpew) { |
| GrPrintf("Small width FBO texture experiments\n"); |
| } |
| fMinRenderTargetWidth = GR_MAX_GLUINT; |
| for (GLuint i = 1; i <= 256; fNPOTRenderTargetSupport ? i *= 2 : ++i) { |
| GLuint w = i; |
| GLuint h = maxRenderSize; |
| if (fbo_test(w, h)) { |
| if (gPrintStartupSpew) { |
| GrPrintf("\t[%d, %d]: PASSED\n", w, h); |
| } |
| fMinRenderTargetWidth = i; |
| break; |
| } else { |
| if (gPrintStartupSpew) { |
| GrPrintf("\t[%d, %d]: FAILED\n", w, h); |
| } |
| } |
| } |
| GrAssert(GR_INVAL_GLINT != fMinRenderTargetWidth); |
| |
| GR_GL_GetIntegerv(GL_MAX_TEXTURE_SIZE, &fMaxTextureDimension); |
| } |
| |
| GrGpuGL::~GrGpuGL() { |
| } |
| |
| void GrGpuGL::resetContext() { |
| // We detect cases when blending is effectively off |
| fHWBlendDisabled = false; |
| GR_GL(Enable(GL_BLEND)); |
| |
| // we don't use the zb at all |
| GR_GL(Disable(GL_DEPTH_TEST)); |
| GR_GL(DepthMask(GL_FALSE)); |
| |
| GR_GL(Disable(GL_CULL_FACE)); |
| GR_GL(FrontFace(GL_CCW)); |
| fHWDrawState.fDrawFace = kBoth_DrawFace; |
| |
| GR_GL(Disable(GL_DITHER)); |
| #if GR_SUPPORT_GLDESKTOP |
| GR_GL(Disable(GL_LINE_SMOOTH)); |
| GR_GL(Disable(GL_POINT_SMOOTH)); |
| GR_GL(Disable(GL_MULTISAMPLE)); |
| #endif |
| |
| GR_GL(ColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE)); |
| fHWDrawState.fFlagBits = 0; |
| |
| // we only ever use lines in hairline mode |
| GR_GL(LineWidth(1)); |
| |
| // invalid |
| fActiveTextureUnitIdx = -1; |
| |
| // illegal values |
| fHWDrawState.fSrcBlend = (GrBlendCoeff)-1; |
| fHWDrawState.fDstBlend = (GrBlendCoeff)-1; |
| |
| fHWDrawState.fBlendConstant = 0x00000000; |
| GR_GL(BlendColor(0,0,0,0)); |
| |
| fHWDrawState.fColor = GrColor_ILLEGAL; |
| |
| fHWDrawState.fViewMatrix = GrMatrix::InvalidMatrix(); |
| |
| for (int s = 0; s < kNumStages; ++s) { |
| fHWDrawState.fTextures[s] = NULL; |
| fHWDrawState.fSamplerStates[s].setRadial2Params(-GR_ScalarMax, |
| -GR_ScalarMax, |
| true); |
| |
| fHWDrawState.fSamplerStates[s].setMatrix(GrMatrix::InvalidMatrix()); |
| } |
| |
| fHWBounds.fScissorRect.invalidate(); |
| fHWBounds.fScissorEnabled = false; |
| GR_GL(Disable(GL_SCISSOR_TEST)); |
| fHWBounds.fViewportRect.invalidate(); |
| |
| fHWDrawState.fStencilSettings.invalidate(); |
| fHWStencilClip = false; |
| fClipState.fClipIsDirty = true; |
| |
| fHWGeometryState.fIndexBuffer = NULL; |
| fHWGeometryState.fVertexBuffer = NULL; |
| GR_GL(BindBuffer(GL_ARRAY_BUFFER, 0)); |
| GR_GL(BindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0)); |
| fHWGeometryState.fArrayPtrsDirty = true; |
| |
| GR_GL(ColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE)); |
| fHWDrawState.fRenderTarget = NULL; |
| } |
| |
| GrRenderTarget* GrGpuGL::createPlatformRenderTargetHelper( |
| intptr_t platformRenderTarget, |
| int stencilBits, |
| int width, |
| int height) { |
| GrGLRenderTarget::GLRenderTargetIDs rtIDs; |
| rtIDs.fStencilRenderbufferID = 0; |
| rtIDs.fMSColorRenderbufferID = 0; |
| rtIDs.fTexFBOID = 0; |
| rtIDs.fOwnIDs = false; |
| GrGLIRect viewport; |
| |
| // viewport is in GL coords (top >= bottom) |
| viewport.fLeft = 0; |
| viewport.fBottom = 0; |
| viewport.fWidth = width; |
| viewport.fHeight = height; |
| |
| rtIDs.fRTFBOID = (GLuint)platformRenderTarget; |
| rtIDs.fTexFBOID = (GLuint)platformRenderTarget; |
| |
| return new GrGLRenderTarget(rtIDs, NULL, stencilBits, viewport, NULL, this); |
| } |
| |
| GrRenderTarget* GrGpuGL::createRenderTargetFrom3DApiStateHelper() { |
| |
| GrGLRenderTarget::GLRenderTargetIDs rtIDs; |
| |
| GR_GL_GetIntegerv(GR_FRAMEBUFFER_BINDING, (GLint*)&rtIDs.fRTFBOID); |
| rtIDs.fTexFBOID = rtIDs.fRTFBOID; |
| rtIDs.fMSColorRenderbufferID = 0; |
| rtIDs.fStencilRenderbufferID = 0; |
| |
| GrGLIRect viewport; |
| viewport.setFromGLViewport(); |
| GLuint stencilBits; |
| GR_GL_GetIntegerv(GL_STENCIL_BITS, (GLint*)&stencilBits); |
| |
| rtIDs.fOwnIDs = false; |
| |
| return new GrGLRenderTarget(rtIDs, NULL, stencilBits, viewport, NULL, this); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| static const GLuint UNKNOWN_BITS = ~0; |
| |
| // defines stencil formats from more to less preferred |
| static const struct { |
| GLenum fEnum; |
| GLuint fBits; |
| } gStencilFormats[] = { |
| {GR_STENCIL_INDEX8, 8}, |
| |
| #if GR_SUPPORT_GLDESKTOP |
| {GR_STENCIL_INDEX16, 16}, |
| #endif |
| |
| {GR_DEPTH24_STENCIL8, 8}, |
| {GR_STENCIL_INDEX4, 4}, |
| |
| #if GR_SUPPORT_GLDESKTOP |
| {GL_STENCIL_INDEX, UNKNOWN_BITS}, |
| {GR_DEPTH_STENCIL, UNKNOWN_BITS} |
| #endif |
| }; |
| |
| // 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::createTextureHelper(const TextureDesc& desc, |
| const void* srcData, |
| size_t rowBytes) { |
| |
| #if GR_COLLECT_STATS |
| ++fStats.fTextureCreateCnt; |
| #endif |
| |
| setSpareTextureUnit(); |
| |
| static const GrGLTexture::TexParams DEFAULT_PARAMS = { |
| GL_NEAREST, |
| GL_CLAMP_TO_EDGE, |
| GL_CLAMP_TO_EDGE |
| }; |
| |
| GrGLTexture::GLTextureDesc glDesc; |
| GLenum internalFormat; |
| |
| glDesc.fContentWidth = desc.fWidth; |
| glDesc.fContentHeight = desc.fHeight; |
| glDesc.fAllocWidth = desc.fWidth; |
| glDesc.fAllocHeight = desc.fHeight; |
| glDesc.fStencilBits = 0; |
| glDesc.fFormat = desc.fFormat; |
| |
| bool renderTarget = 0 != (desc.fFlags & kRenderTarget_TextureFlag); |
| if (!canBeTexture(desc.fFormat, |
| &internalFormat, |
| &glDesc.fUploadFormat, |
| &glDesc.fUploadType)) { |
| return return_null_texture(); |
| } |
| |
| GrAssert(as_size_t(desc.fAALevel) < GR_ARRAY_COUNT(fAASamples)); |
| GLint samples = fAASamples[desc.fAALevel]; |
| if (kNone_MSFBO == fMSFBOType && desc.fAALevel != kNone_AALevel) { |
| GrPrintf("AA RT requested but not supported on this platform."); |
| } |
| |
| GR_GL(GenTextures(1, &glDesc.fTextureID)); |
| if (!glDesc.fTextureID) { |
| return return_null_texture(); |
| } |
| |
| glDesc.fUploadByteCount = GrTexture::BytesPerPixel(desc.fFormat); |
| |
| /* |
| * check if our srcData has extra bytes past each row. If so, we need |
| * to trim those off here, since GL doesn't let us pass the rowBytes as |
| * a parameter to glTexImage2D |
| */ |
| #if GR_SUPPORT_GLDESKTOP |
| if (srcData) { |
| GR_GL(PixelStorei(GL_UNPACK_ROW_LENGTH, |
| rowBytes / glDesc.fUploadByteCount)); |
| } |
| #else |
| GrAutoSMalloc<128 * 128> trimStorage; |
| size_t trimRowBytes = desc.fWidth * glDesc.fUploadByteCount; |
| if (srcData && (trimRowBytes < rowBytes)) { |
| size_t trimSize = desc.fHeight * trimRowBytes; |
| trimStorage.realloc(trimSize); |
| // now copy the data into our new storage, skipping the trailing bytes |
| const char* src = (const char*)srcData; |
| char* dst = (char*)trimStorage.get(); |
| for (uint32_t y = 0; y < desc.fHeight; y++) { |
| memcpy(dst, src, trimRowBytes); |
| src += rowBytes; |
| dst += trimRowBytes; |
| } |
| // now point srcData to our trimmed version |
| srcData = trimStorage.get(); |
| } |
| #endif |
| |
| if (renderTarget) { |
| if (!this->npotRenderTargetSupport()) { |
| glDesc.fAllocWidth = GrNextPow2(desc.fWidth); |
| glDesc.fAllocHeight = GrNextPow2(desc.fHeight); |
| } |
| |
| glDesc.fAllocWidth = GrMax<int>(fMinRenderTargetWidth, |
| glDesc.fAllocWidth); |
| glDesc.fAllocHeight = GrMax<int>(fMinRenderTargetHeight, |
| glDesc.fAllocHeight); |
| } else if (!this->npotTextureSupport()) { |
| glDesc.fAllocWidth = GrNextPow2(desc.fWidth); |
| glDesc.fAllocHeight = GrNextPow2(desc.fHeight); |
| } |
| |
| GR_GL(BindTexture(GL_TEXTURE_2D, glDesc.fTextureID)); |
| GR_GL(TexParameteri(GL_TEXTURE_2D, |
| GL_TEXTURE_MAG_FILTER, |
| DEFAULT_PARAMS.fFilter)); |
| GR_GL(TexParameteri(GL_TEXTURE_2D, |
| GL_TEXTURE_MIN_FILTER, |
| DEFAULT_PARAMS.fFilter)); |
| GR_GL(TexParameteri(GL_TEXTURE_2D, |
| GL_TEXTURE_WRAP_S, |
| DEFAULT_PARAMS.fWrapS)); |
| GR_GL(TexParameteri(GL_TEXTURE_2D, |
| GL_TEXTURE_WRAP_T, |
| DEFAULT_PARAMS.fWrapT)); |
| |
| GR_GL(PixelStorei(GL_UNPACK_ALIGNMENT, glDesc.fUploadByteCount)); |
| if (GrTexture::kIndex_8_PixelConfig == desc.fFormat && |
| supports8BitPalette()) { |
| // ES only supports CompressedTexImage2D, not CompressedTexSubimage2D |
| GrAssert(desc.fWidth == glDesc.fAllocWidth); |
| GrAssert(desc.fHeight == glDesc.fAllocHeight); |
| GLsizei imageSize = glDesc.fAllocWidth * glDesc.fAllocHeight + |
| kColorTableSize; |
| GR_GL(CompressedTexImage2D(GL_TEXTURE_2D, 0, glDesc.fUploadFormat, |
| glDesc.fAllocWidth, glDesc.fAllocHeight, |
| 0, imageSize, srcData)); |
| GrGL_RestoreResetRowLength(); |
| } else { |
| if (NULL != srcData && (glDesc.fAllocWidth != desc.fWidth || |
| glDesc.fAllocHeight != desc.fHeight)) { |
| GR_GL(TexImage2D(GL_TEXTURE_2D, 0, internalFormat, |
| glDesc.fAllocWidth, glDesc.fAllocHeight, |
| 0, glDesc.fUploadFormat, glDesc.fUploadType, NULL)); |
| GR_GL(TexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, desc.fWidth, |
| desc.fHeight, glDesc.fUploadFormat, |
| glDesc.fUploadType, srcData)); |
| GrGL_RestoreResetRowLength(); |
| |
| uint32_t extraW = glDesc.fAllocWidth - desc.fWidth; |
| uint32_t extraH = glDesc.fAllocHeight - desc.fHeight; |
| uint32_t maxTexels = extraW * extraH; |
| maxTexels = GrMax(extraW * desc.fHeight, maxTexels); |
| maxTexels = GrMax(desc.fWidth * extraH, maxTexels); |
| |
| GrAutoSMalloc<128*128> texels(glDesc.fUploadByteCount * maxTexels); |
| |
| uint32_t rowSize = desc.fWidth * glDesc.fUploadByteCount; |
| if (extraH) { |
| uint8_t* lastRowStart = (uint8_t*) srcData + |
| (desc.fHeight - 1) * rowSize; |
| uint8_t* extraRowStart = (uint8_t*)texels.get(); |
| |
| for (uint32_t i = 0; i < extraH; ++i) { |
| memcpy(extraRowStart, lastRowStart, rowSize); |
| extraRowStart += rowSize; |
| } |
| GR_GL(TexSubImage2D(GL_TEXTURE_2D, 0, 0, desc.fHeight, desc.fWidth, |
| extraH, glDesc.fUploadFormat, glDesc.fUploadType, |
| texels.get())); |
| } |
| if (extraW) { |
| uint8_t* edgeTexel = (uint8_t*)srcData + rowSize - glDesc.fUploadByteCount; |
| uint8_t* extraTexel = (uint8_t*)texels.get(); |
| for (uint32_t j = 0; j < desc.fHeight; ++j) { |
| for (uint32_t i = 0; i < extraW; ++i) { |
| memcpy(extraTexel, edgeTexel, glDesc.fUploadByteCount); |
| extraTexel += glDesc.fUploadByteCount; |
| } |
| edgeTexel += rowSize; |
| } |
| GR_GL(TexSubImage2D(GL_TEXTURE_2D, 0, desc.fWidth, 0, extraW, |
| desc.fHeight, glDesc.fUploadFormat, |
| glDesc.fUploadType, texels.get())); |
| } |
| if (extraW && extraH) { |
| uint8_t* cornerTexel = (uint8_t*)srcData + desc.fHeight * rowSize |
| - glDesc.fUploadByteCount; |
| uint8_t* extraTexel = (uint8_t*)texels.get(); |
| for (uint32_t i = 0; i < extraW*extraH; ++i) { |
| memcpy(extraTexel, cornerTexel, glDesc.fUploadByteCount); |
| extraTexel += glDesc.fUploadByteCount; |
| } |
| GR_GL(TexSubImage2D(GL_TEXTURE_2D, 0, desc.fWidth, desc.fHeight, |
| extraW, extraH, glDesc.fUploadFormat, |
| glDesc.fUploadType, texels.get())); |
| } |
| |
| } else { |
| GR_GL(TexImage2D(GL_TEXTURE_2D, 0, internalFormat, glDesc.fAllocWidth, |
| glDesc.fAllocHeight, 0, glDesc.fUploadFormat, |
| glDesc.fUploadType, srcData)); |
| GrGL_RestoreResetRowLength(); |
| } |
| } |
| |
| glDesc.fOrientation = GrGLTexture::kTopDown_Orientation; |
| |
| GrGLRenderTarget::GLRenderTargetIDs rtIDs; |
| rtIDs.fStencilRenderbufferID = 0; |
| rtIDs.fMSColorRenderbufferID = 0; |
| rtIDs.fRTFBOID = 0; |
| rtIDs.fTexFBOID = 0; |
| rtIDs.fOwnIDs = true; |
| GLenum msColorRenderbufferFormat = -1; |
| |
| if (renderTarget) { |
| #if GR_COLLECT_STATS |
| ++fStats.fRenderTargetCreateCnt; |
| #endif |
| bool failed = true; |
| GLenum status; |
| GLint err; |
| |
| // If need have both RT flag and srcData we have |
| // to invert the data before uploading because FBO |
| // will be rendered bottom up |
| GrAssert(NULL == srcData); |
| glDesc.fOrientation = GrGLTexture::kBottomUp_Orientation; |
| |
| GR_GL(GenFramebuffers(1, &rtIDs.fTexFBOID)); |
| GrAssert(rtIDs.fTexFBOID); |
| |
| // If we are using multisampling and any extension other than the IMG |
| // one we will create two FBOs. We render to one and then resolve to |
| // the texture bound to the other. The IMG extension does an implicit |
| // resolve. |
| if (samples > 1 && kIMG_MSFBO != fMSFBOType && kNone_MSFBO != fMSFBOType) { |
| GR_GL(GenFramebuffers(1, &rtIDs.fRTFBOID)); |
| GrAssert(0 != rtIDs.fRTFBOID); |
| GR_GL(GenRenderbuffers(1, &rtIDs.fMSColorRenderbufferID)); |
| GrAssert(0 != rtIDs.fMSColorRenderbufferID); |
| if (!fboInternalFormat(desc.fFormat, &msColorRenderbufferFormat)) { |
| GR_GL(DeleteRenderbuffers(1, &rtIDs.fMSColorRenderbufferID)); |
| GR_GL(DeleteTextures(1, &glDesc.fTextureID)); |
| GR_GL(DeleteFramebuffers(1, &rtIDs.fTexFBOID)); |
| GR_GL(DeleteFramebuffers(1, &rtIDs.fRTFBOID)); |
| return return_null_texture(); |
| } |
| } else { |
| rtIDs.fRTFBOID = rtIDs.fTexFBOID; |
| } |
| int attempts = 1; |
| if (!(kNoPathRendering_TextureFlag & desc.fFlags)) { |
| GR_GL(GenRenderbuffers(1, &rtIDs.fStencilRenderbufferID)); |
| GrAssert(0 != rtIDs.fStencilRenderbufferID); |
| attempts = GR_ARRAY_COUNT(gStencilFormats); |
| } |
| |
| // someone suggested that some systems might require |
| // unbinding the texture before we call FramebufferTexture2D |
| // (seems unlikely) |
| GR_GL(BindTexture(GL_TEXTURE_2D, 0)); |
| |
| err = ~GL_NO_ERROR; |
| for (int i = 0; i < attempts; ++i) { |
| if (rtIDs.fStencilRenderbufferID) { |
| GR_GL(BindRenderbuffer(GR_RENDERBUFFER, |
| rtIDs.fStencilRenderbufferID)); |
| if (samples > 1) { |
| GR_GL_NO_ERR(RenderbufferStorageMultisample( |
| GR_RENDERBUFFER, |
| samples, |
| gStencilFormats[i].fEnum, |
| glDesc.fAllocWidth, |
| glDesc.fAllocHeight)); |
| } else { |
| GR_GL_NO_ERR(RenderbufferStorage(GR_RENDERBUFFER, |
| gStencilFormats[i].fEnum, |
| glDesc.fAllocWidth, |
| glDesc.fAllocHeight)); |
| } |
| err = glGetError(); |
| if (err != GL_NO_ERROR) { |
| continue; |
| } |
| } |
| if (rtIDs.fRTFBOID != rtIDs.fTexFBOID) { |
| GrAssert(samples > 1); |
| GR_GL(BindRenderbuffer(GR_RENDERBUFFER, |
| rtIDs.fMSColorRenderbufferID)); |
| GR_GL_NO_ERR(RenderbufferStorageMultisample( |
| GR_RENDERBUFFER, |
| samples, |
| msColorRenderbufferFormat, |
| glDesc.fAllocWidth, |
| glDesc.fAllocHeight)); |
| err = glGetError(); |
| if (err != GL_NO_ERROR) { |
| continue; |
| } |
| } |
| GR_GL(BindFramebuffer(GR_FRAMEBUFFER, rtIDs.fTexFBOID)); |
| |
| #if GR_COLLECT_STATS |
| ++fStats.fRenderTargetChngCnt; |
| #endif |
| if (kIMG_MSFBO == fMSFBOType && samples > 1) { |
| GR_GL(FramebufferTexture2DMultisample(GR_FRAMEBUFFER, |
| GR_COLOR_ATTACHMENT0, |
| GL_TEXTURE_2D, |
| glDesc.fTextureID, |
| 0, |
| samples)); |
| |
| } else { |
| GR_GL(FramebufferTexture2D(GR_FRAMEBUFFER, |
| GR_COLOR_ATTACHMENT0, |
| GL_TEXTURE_2D, |
| glDesc.fTextureID, 0)); |
| } |
| if (rtIDs.fRTFBOID != rtIDs.fTexFBOID) { |
| GLenum status = GR_GL(CheckFramebufferStatus(GR_FRAMEBUFFER)); |
| if (status != GR_FRAMEBUFFER_COMPLETE) { |
| GrPrintf("-- glCheckFramebufferStatus %x %d %d\n", |
| status, desc.fWidth, desc.fHeight); |
| continue; |
| } |
| GR_GL(BindFramebuffer(GR_FRAMEBUFFER, rtIDs.fRTFBOID)); |
| #if GR_COLLECT_STATS |
| ++fStats.fRenderTargetChngCnt; |
| #endif |
| GR_GL(FramebufferRenderbuffer(GR_FRAMEBUFFER, |
| GR_COLOR_ATTACHMENT0, |
| GR_RENDERBUFFER, |
| rtIDs.fMSColorRenderbufferID)); |
| |
| } |
| if (rtIDs.fStencilRenderbufferID) { |
| // bind the stencil to rt fbo if present, othewise the tex fbo |
| GR_GL(FramebufferRenderbuffer(GR_FRAMEBUFFER, |
| GR_STENCIL_ATTACHMENT, |
| GR_RENDERBUFFER, |
| rtIDs.fStencilRenderbufferID)); |
| } |
| status = GR_GL(CheckFramebufferStatus(GR_FRAMEBUFFER)); |
| |
| #if GR_SUPPORT_GLDESKTOP |
| // On some implementations you have to be bound as DEPTH_STENCIL. |
| // (Even binding to DEPTH and STENCIL separately with the same |
| // buffer doesn't work.) |
| if (rtIDs.fStencilRenderbufferID && |
| status != GR_FRAMEBUFFER_COMPLETE) { |
| GR_GL(FramebufferRenderbuffer(GR_FRAMEBUFFER, |
| GR_STENCIL_ATTACHMENT, |
| GR_RENDERBUFFER, |
| 0)); |
| GR_GL(FramebufferRenderbuffer(GR_FRAMEBUFFER, |
| GR_DEPTH_STENCIL_ATTACHMENT, |
| GR_RENDERBUFFER, |
| rtIDs.fStencilRenderbufferID)); |
| status = GR_GL(CheckFramebufferStatus(GR_FRAMEBUFFER)); |
| } |
| #endif |
| if (status != GR_FRAMEBUFFER_COMPLETE) { |
| GrPrintf("-- glCheckFramebufferStatus %x %d %d\n", |
| status, desc.fWidth, desc.fHeight); |
| #if GR_SUPPORT_GLDESKTOP |
| if (rtIDs.fStencilRenderbufferID) { |
| GR_GL(FramebufferRenderbuffer(GR_FRAMEBUFFER, |
| GR_DEPTH_STENCIL_ATTACHMENT, |
| GR_RENDERBUFFER, |
| 0)); |
| } |
| #endif |
| continue; |
| } |
| // we're successful! |
| failed = false; |
| if (rtIDs.fStencilRenderbufferID) { |
| if (UNKNOWN_BITS == gStencilFormats[i].fBits) { |
| GR_GL_GetIntegerv(GL_STENCIL_BITS, (GLint*)&glDesc.fStencilBits); |
| } else { |
| glDesc.fStencilBits = gStencilFormats[i].fBits; |
| } |
| } |
| break; |
| } |
| if (failed) { |
| if (rtIDs.fStencilRenderbufferID) { |
| GR_GL(DeleteRenderbuffers(1, &rtIDs.fStencilRenderbufferID)); |
| } |
| if (rtIDs.fMSColorRenderbufferID) { |
| GR_GL(DeleteRenderbuffers(1, &rtIDs.fMSColorRenderbufferID)); |
| } |
| if (rtIDs.fRTFBOID != rtIDs.fTexFBOID) { |
| GR_GL(DeleteFramebuffers(1, &rtIDs.fRTFBOID)); |
| } |
| if (rtIDs.fTexFBOID) { |
| GR_GL(DeleteFramebuffers(1, &rtIDs.fTexFBOID)); |
| } |
| GR_GL(DeleteTextures(1, &glDesc.fTextureID)); |
| return return_null_texture(); |
| } |
| } |
| #ifdef TRACE_TEXTURE_CREATION |
| GrPrintf("--- new texture [%d] size=(%d %d) bpp=%d\n", |
| tex->fTextureID, width, height, tex->fUploadByteCount); |
| #endif |
| GrGLTexture* tex = new GrGLTexture(glDesc, rtIDs, DEFAULT_PARAMS, this); |
| |
| if (0 != rtIDs.fTexFBOID) { |
| GrRenderTarget* rt = tex->asRenderTarget(); |
| // We've messed with FBO state but may not have set the correct viewport |
| // so just dirty the rendertarget state to force a resend. |
| fHWDrawState.fRenderTarget = NULL; |
| |
| // clear the new stencil buffer if we have one |
| if (!(desc.fFlags & kNoPathRendering_TextureFlag)) { |
| GrRenderTarget* rtSave = fCurrDrawState.fRenderTarget; |
| fCurrDrawState.fRenderTarget = rt; |
| eraseStencil(0, ~0); |
| fCurrDrawState.fRenderTarget = rtSave; |
| } |
| } |
| return tex; |
| } |
| |
| GrVertexBuffer* GrGpuGL::createVertexBufferHelper(uint32_t size, bool dynamic) { |
| GLuint id; |
| GR_GL(GenBuffers(1, &id)); |
| if (id) { |
| GR_GL(BindBuffer(GL_ARRAY_BUFFER, id)); |
| fHWGeometryState.fArrayPtrsDirty = true; |
| GrGLClearErr(); |
| // make sure driver can allocate memory for this buffer |
| GR_GL_NO_ERR(BufferData(GL_ARRAY_BUFFER, size, NULL, |
| dynamic ? GL_DYNAMIC_DRAW : GL_STATIC_DRAW)); |
| if (glGetError() != GL_NO_ERROR) { |
| GR_GL(DeleteBuffers(1, &id)); |
| // deleting bound buffer does implicit bind to 0 |
| fHWGeometryState.fVertexBuffer = NULL; |
| return NULL; |
| } |
| GrGLVertexBuffer* vertexBuffer = new GrGLVertexBuffer(id, this, |
| size, dynamic); |
| fHWGeometryState.fVertexBuffer = vertexBuffer; |
| return vertexBuffer; |
| } |
| return NULL; |
| } |
| |
| GrIndexBuffer* GrGpuGL::createIndexBufferHelper(uint32_t size, bool dynamic) { |
| GLuint id; |
| GR_GL(GenBuffers(1, &id)); |
| if (id) { |
| GR_GL(BindBuffer(GL_ELEMENT_ARRAY_BUFFER, id)); |
| GrGLClearErr(); |
| // make sure driver can allocate memory for this buffer |
| GR_GL_NO_ERR(BufferData(GL_ELEMENT_ARRAY_BUFFER, size, NULL, |
| dynamic ? GL_DYNAMIC_DRAW : GL_STATIC_DRAW)); |
| if (glGetError() != GL_NO_ERROR) { |
| GR_GL(DeleteBuffers(1, &id)); |
| // deleting bound buffer does implicit bind to 0 |
| fHWGeometryState.fIndexBuffer = NULL; |
| return NULL; |
| } |
| GrIndexBuffer* indexBuffer = new GrGLIndexBuffer(id, this, |
| size, dynamic); |
| fHWGeometryState.fIndexBuffer = indexBuffer; |
| return indexBuffer; |
| } |
| return NULL; |
| } |
| |
| void GrGpuGL::flushScissor(const GrIRect* rect) { |
| GrAssert(NULL != fCurrDrawState.fRenderTarget); |
| const GrGLIRect& vp = |
| ((GrGLRenderTarget*)fCurrDrawState.fRenderTarget)->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(); |
| fHWBounds.fScissorRect = scissor; |
| } |
| if (!fHWBounds.fScissorEnabled) { |
| GR_GL(Enable(GL_SCISSOR_TEST)); |
| fHWBounds.fScissorEnabled = true; |
| } |
| } else { |
| if (fHWBounds.fScissorEnabled) { |
| GR_GL(Disable(GL_SCISSOR_TEST)); |
| fHWBounds.fScissorEnabled = false; |
| } |
| } |
| } |
| |
| void GrGpuGL::eraseColorHelper(GrColor color) { |
| if (NULL == fCurrDrawState.fRenderTarget) { |
| return; |
| } |
| flushRenderTarget(); |
| if (fHWBounds.fScissorEnabled) { |
| GR_GL(Disable(GL_SCISSOR_TEST)); |
| fHWBounds.fScissorEnabled = false; |
| } |
| GR_GL(ColorMask(GL_TRUE,GL_TRUE,GL_TRUE,GL_TRUE)); |
| fHWDrawState.fFlagBits &= ~kNoColorWrites_StateBit; |
| GR_GL(ClearColor(GrColorUnpackR(color)/255.f, |
| GrColorUnpackG(color)/255.f, |
| GrColorUnpackB(color)/255.f, |
| GrColorUnpackA(color)/255.f)); |
| GR_GL(Clear(GL_COLOR_BUFFER_BIT)); |
| } |
| |
| void GrGpuGL::eraseStencil(uint32_t value, uint32_t mask) { |
| if (NULL == fCurrDrawState.fRenderTarget) { |
| return; |
| } |
| flushRenderTarget(); |
| if (fHWBounds.fScissorEnabled) { |
| GR_GL(Disable(GL_SCISSOR_TEST)); |
| fHWBounds.fScissorEnabled = false; |
| } |
| GR_GL(StencilMask(mask)); |
| GR_GL(ClearStencil(value)); |
| GR_GL(Clear(GL_STENCIL_BUFFER_BIT)); |
| fHWDrawState.fStencilSettings.invalidate(); |
| } |
| |
| void GrGpuGL::eraseStencilClip(const GrIRect& rect) { |
| GrAssert(NULL != fCurrDrawState.fRenderTarget); |
| #if 0 |
| GLint stencilBitCount = fCurrDrawState.fRenderTarget->stencilBits(); |
| GrAssert(stencilBitCount > 0); |
| GLint 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 GLint clipStencilMask = ~0; |
| #endif |
| flushRenderTarget(); |
| flushScissor(&rect); |
| GR_GL(StencilMask(clipStencilMask)); |
| GR_GL(ClearStencil(0)); |
| GR_GL(Clear(GL_STENCIL_BUFFER_BIT)); |
| fHWDrawState.fStencilSettings.invalidate(); |
| } |
| |
| void GrGpuGL::forceRenderTargetFlushHelper() { |
| flushRenderTarget(); |
| } |
| |
| bool GrGpuGL::readPixelsHelper(int left, int top, int width, int height, |
| GrTexture::PixelConfig config, void* buffer) { |
| GLenum internalFormat; // we don't use this for glReadPixels |
| GLenum format; |
| GLenum type; |
| if (!this->canBeTexture(config, &internalFormat, &format, &type)) { |
| return false; |
| } |
| |
| if (NULL == fCurrDrawState.fRenderTarget) { |
| return false; |
| } |
| flushRenderTarget(); |
| |
| const GrGLIRect& glvp = ((GrGLRenderTarget*)fCurrDrawState.fRenderTarget)->getViewport(); |
| |
| // the read rect is viewport-relative |
| GrGLIRect readRect; |
| readRect.setRelativeTo(glvp, left, top, width, height); |
| GR_GL(ReadPixels(readRect.fLeft, readRect.fBottom, |
| readRect.fWidth, readRect.fHeight, |
| format, type, buffer)); |
| |
| // now reverse the order of the rows, since GL's are bottom-to-top, but our |
| // API presents top-to-bottom |
| { |
| size_t stride = width * GrTexture::BytesPerPixel(config); |
| GrAutoMalloc rowStorage(stride); |
| void* tmp = rowStorage.get(); |
| |
| const int halfY = height >> 1; |
| char* top = reinterpret_cast<char*>(buffer); |
| char* bottom = top + (height - 1) * stride; |
| for (int y = 0; y < halfY; y++) { |
| memcpy(tmp, top, stride); |
| memcpy(top, bottom, stride); |
| memcpy(bottom, tmp, stride); |
| top += stride; |
| bottom -= stride; |
| } |
| } |
| return true; |
| } |
| |
| void GrGpuGL::flushRenderTarget() { |
| |
| GrAssert(NULL != fCurrDrawState.fRenderTarget); |
| |
| if (fHWDrawState.fRenderTarget != fCurrDrawState.fRenderTarget) { |
| GrGLRenderTarget* rt = (GrGLRenderTarget*)fCurrDrawState.fRenderTarget; |
| GR_GL(BindFramebuffer(GR_FRAMEBUFFER, rt->renderFBOID())); |
| #if GR_COLLECT_STATS |
| ++fStats.fRenderTargetChngCnt; |
| #endif |
| rt->setDirty(true); |
| #if GR_DEBUG |
| GLenum status = GR_GL(CheckFramebufferStatus(GR_FRAMEBUFFER)); |
| if (status != GR_FRAMEBUFFER_COMPLETE) { |
| GrPrintf("-- glCheckFramebufferStatus %x\n", status); |
| } |
| #endif |
| fDirtyFlags.fRenderTargetChanged = true; |
| fHWDrawState.fRenderTarget = fCurrDrawState.fRenderTarget; |
| const GrGLIRect& vp = rt->getViewport(); |
| if (fHWBounds.fViewportRect != vp) { |
| vp.pushToGLViewport(); |
| fHWBounds.fViewportRect = vp; |
| } |
| } |
| } |
| |
| GLenum gPrimitiveType2GLMode[] = { |
| GL_TRIANGLES, |
| GL_TRIANGLE_STRIP, |
| GL_TRIANGLE_FAN, |
| GL_POINTS, |
| GL_LINES, |
| 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::drawIndexedHelper(GrPrimitiveType type, |
| uint32_t startVertex, |
| uint32_t startIndex, |
| uint32_t vertexCount, |
| uint32_t indexCount) { |
| GrAssert((size_t)type < GR_ARRAY_COUNT(gPrimitiveType2GLMode)); |
| |
| GLvoid* indices = (GLvoid*)(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); |
| |
| GR_GL(DrawElements(gPrimitiveType2GLMode[type], indexCount, |
| 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::drawNonIndexedHelper(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. |
| GR_GL(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::resolveTextureRenderTarget(GrGLTexture* texture) { |
| GrGLRenderTarget* rt = (GrGLRenderTarget*) texture->asRenderTarget(); |
| |
| if (NULL != rt && rt->needsResolve()) { |
| GrAssert(kNone_MSFBO != fMSFBOType); |
| GrAssert(rt->textureFBOID() != rt->renderFBOID()); |
| GR_GL(BindFramebuffer(GR_READ_FRAMEBUFFER, |
| rt->renderFBOID())); |
| GR_GL(BindFramebuffer(GR_DRAW_FRAMEBUFFER, |
| rt->textureFBOID())); |
| #if GR_COLLECT_STATS |
| ++fStats.fRenderTargetChngCnt; |
| #endif |
| // make sure we go through set render target |
| fHWDrawState.fRenderTarget = NULL; |
| |
| GLint left = 0; |
| GLint right = texture->width(); |
| // we will have rendered to the top of the FBO. |
| GLint top = texture->allocHeight(); |
| GLint bottom = texture->allocHeight() - texture->height(); |
| if (kApple_MSFBO == fMSFBOType) { |
| GR_GL(Enable(GL_SCISSOR_TEST)); |
| GR_GL(Scissor(left, bottom, right-left, top-bottom)); |
| GR_GL(ResolveMultisampleFramebuffer()); |
| fHWBounds.fScissorRect.invalidate(); |
| fHWBounds.fScissorEnabled = true; |
| } else { |
| GR_GL(BlitFramebuffer(left, bottom, right, top, |
| left, bottom, right, top, |
| GL_COLOR_BUFFER_BIT, GL_NEAREST)); |
| } |
| rt->setDirty(false); |
| |
| } |
| } |
| |
| static const GLenum grToGLStencilFunc[] = { |
| GL_ALWAYS, // kAlways_StencilFunc |
| GL_NEVER, // kNever_StencilFunc |
| GL_GREATER, // kGreater_StencilFunc |
| GL_GEQUAL, // kGEqual_StencilFunc |
| GL_LESS, // kLess_StencilFunc |
| GL_LEQUAL, // kLEqual_StencilFunc, |
| GL_EQUAL, // kEqual_StencilFunc, |
| 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 GLenum grToGLStencilOp[] = { |
| GL_KEEP, // kKeep_StencilOp |
| GL_REPLACE, // kReplace_StencilOp |
| GL_INCR_WRAP, // kIncWrap_StencilOp |
| GL_INCR, // kIncClamp_StencilOp |
| GL_DECR_WRAP, // kDecWrap_StencilOp |
| GL_DECR, // kDecClamp_StencilOp |
| GL_ZERO, // kZero_StencilOp |
| 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 GrStencilSettings* settings = &fCurrDrawState.fStencilSettings; |
| |
| // use stencil for clipping if clipping is enabled and the clip |
| // has been written into the stencil. |
| bool stencilClip = fClipState.fClipInStencil && |
| (kClip_StateBit & fCurrDrawState.fFlagBits); |
| bool stencilChange = fHWStencilClip != stencilClip || |
| fHWDrawState.fStencilSettings != *settings || |
| ((fHWDrawState.fFlagBits & kModifyStencilClip_StateBit) != |
| (fCurrDrawState.fFlagBits & kModifyStencilClip_StateBit)); |
| |
| if (stencilChange) { |
| |
| // we can't simultaneously perform stencil-clipping and modify the stencil clip |
| GrAssert(!stencilClip || !(fCurrDrawState.fFlagBits & kModifyStencilClip_StateBit)); |
| |
| if (settings->isDisabled()) { |
| if (stencilClip) { |
| settings = &gClipStencilSettings; |
| } |
| } |
| |
| if (settings->isDisabled()) { |
| GR_GL(Disable(GL_STENCIL_TEST)); |
| } else { |
| GR_GL(Enable(GL_STENCIL_TEST)); |
| #if GR_DEBUG |
| if (!fStencilWrapOpsSupport) { |
| GrAssert(settings->fFrontPassOp != kIncWrap_StencilOp); |
| GrAssert(settings->fFrontPassOp != kDecWrap_StencilOp); |
| GrAssert(settings->fFrontFailOp != kIncWrap_StencilOp); |
| GrAssert(settings->fBackFailOp != kDecWrap_StencilOp); |
| GrAssert(settings->fBackPassOp != kIncWrap_StencilOp); |
| GrAssert(settings->fBackPassOp != kDecWrap_StencilOp); |
| GrAssert(settings->fBackFailOp != kIncWrap_StencilOp); |
| GrAssert(settings->fFrontFailOp != kDecWrap_StencilOp); |
| } |
| #endif |
| int stencilBits = fCurrDrawState.fRenderTarget->stencilBits(); |
| GrAssert(stencilBits || |
| (GrStencilSettings::gDisabled == |
| fCurrDrawState.fStencilSettings)); |
| GLuint clipStencilMask = 1 << (stencilBits - 1); |
| GLuint userStencilMask = clipStencilMask - 1; |
| |
| unsigned int frontRef = settings->fFrontFuncRef; |
| unsigned int frontMask = settings->fFrontFuncMask; |
| unsigned int frontWriteMask = settings->fFrontWriteMask; |
| GLenum frontFunc; |
| |
| if (fCurrDrawState.fFlagBits & kModifyStencilClip_StateBit) { |
| |
| GrAssert(settings->fFrontFunc < kBasicStencilFuncCount); |
| frontFunc = grToGLStencilFunc[settings->fFrontFunc]; |
| } else { |
| frontFunc = grToGLStencilFunc[ConvertStencilFunc(stencilClip, settings->fFrontFunc)]; |
| |
| ConvertStencilFuncAndMask(settings->fFrontFunc, |
| stencilClip, |
| clipStencilMask, |
| userStencilMask, |
| &frontRef, |
| &frontMask); |
| frontWriteMask &= userStencilMask; |
| } |
| GrAssert(settings->fFrontFailOp >= 0 && |
| settings->fFrontFailOp < GR_ARRAY_COUNT(grToGLStencilOp)); |
| GrAssert(settings->fFrontPassOp >= 0 && |
| settings->fFrontPassOp < GR_ARRAY_COUNT(grToGLStencilOp)); |
| GrAssert(settings->fBackFailOp >= 0 && |
| settings->fBackFailOp < GR_ARRAY_COUNT(grToGLStencilOp)); |
| GrAssert(settings->fBackPassOp >= 0 && |
| settings->fBackPassOp < GR_ARRAY_COUNT(grToGLStencilOp)); |
| if (fTwoSidedStencilSupport) { |
| GLenum backFunc; |
| |
| unsigned int backRef = settings->fBackFuncRef; |
| unsigned int backMask = settings->fBackFuncMask; |
| unsigned int backWriteMask = settings->fBackWriteMask; |
| |
| |
| if (fCurrDrawState.fFlagBits & kModifyStencilClip_StateBit) { |
| GrAssert(settings->fBackFunc < kBasicStencilFuncCount); |
| backFunc = grToGLStencilFunc[settings->fBackFunc]; |
| } else { |
| backFunc = grToGLStencilFunc[ConvertStencilFunc(stencilClip, settings->fBackFunc)]; |
| ConvertStencilFuncAndMask(settings->fBackFunc, |
| stencilClip, |
| clipStencilMask, |
| userStencilMask, |
| &backRef, |
| &backMask); |
| backWriteMask &= userStencilMask; |
| } |
| |
| GR_GL(StencilFuncSeparate(GL_FRONT, frontFunc, frontRef, frontMask)); |
| GR_GL(StencilMaskSeparate(GL_FRONT, frontWriteMask)); |
| GR_GL(StencilFuncSeparate(GL_BACK, backFunc, backRef, backMask)); |
| GR_GL(StencilMaskSeparate(GL_BACK, backWriteMask)); |
| GR_GL(StencilOpSeparate(GL_FRONT, grToGLStencilOp[settings->fFrontFailOp], |
| grToGLStencilOp[settings->fFrontPassOp], |
| grToGLStencilOp[settings->fFrontPassOp])); |
| |
| GR_GL(StencilOpSeparate(GL_BACK, grToGLStencilOp[settings->fBackFailOp], |
| grToGLStencilOp[settings->fBackPassOp], |
| grToGLStencilOp[settings->fBackPassOp])); |
| } else { |
| GR_GL(StencilFunc(frontFunc, frontRef, frontMask)); |
| GR_GL(StencilMask(frontWriteMask)); |
| GR_GL(StencilOp(grToGLStencilOp[settings->fFrontFailOp], |
| grToGLStencilOp[settings->fFrontPassOp], |
| grToGLStencilOp[settings->fFrontPassOp])); |
| } |
| } |
| fHWDrawState.fStencilSettings = fCurrDrawState.fStencilSettings; |
| fHWStencilClip = stencilClip; |
| } |
| } |
| |
| bool GrGpuGL::flushGLStateCommon(GrPrimitiveType type) { |
| |
| // GrGpu::setupClipAndFlushState should have already checked this |
| // and bailed if not true. |
| GrAssert(NULL != fCurrDrawState.fRenderTarget); |
| |
| for (int s = 0; s < kNumStages; ++s) { |
| bool usingTexture = VertexUsesStage(s, fGeometrySrc.fVertexLayout); |
| |
| // bind texture and set sampler state |
| if (usingTexture) { |
| GrGLTexture* nextTexture = (GrGLTexture*)fCurrDrawState.fTextures[s]; |
| |
| if (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. |
| resolveTextureRenderTarget(nextTexture); |
| |
| if (fHWDrawState.fTextures[s] != nextTexture) { |
| setTextureUnit(s); |
| GR_GL(BindTexture(GL_TEXTURE_2D, nextTexture->textureID())); |
| #if GR_COLLECT_STATS |
| ++fStats.fTextureChngCnt; |
| #endif |
| //GrPrintf("---- bindtexture %d\n", nextTexture->textureID()); |
| fHWDrawState.fTextures[s] = nextTexture; |
| } |
| |
| const GrSamplerState& sampler = fCurrDrawState.fSamplerStates[s]; |
| const GrGLTexture::TexParams& oldTexParams = |
| nextTexture->getTexParams(); |
| GrGLTexture::TexParams newTexParams; |
| |
| newTexParams.fFilter = sampler.isFilter() ? GL_LINEAR : |
| GL_NEAREST; |
| newTexParams.fWrapS = |
| GrGLTexture::gWrapMode2GLWrap[sampler.getWrapX()]; |
| newTexParams.fWrapT = |
| GrGLTexture::gWrapMode2GLWrap[sampler.getWrapY()]; |
| |
| if (newTexParams.fFilter != oldTexParams.fFilter) { |
| setTextureUnit(s); |
| GR_GL(TexParameteri(GL_TEXTURE_2D, |
| GL_TEXTURE_MAG_FILTER, |
| newTexParams.fFilter)); |
| GR_GL(TexParameteri(GL_TEXTURE_2D, |
| GL_TEXTURE_MIN_FILTER, |
| newTexParams.fFilter)); |
| } |
| if (newTexParams.fWrapS != oldTexParams.fWrapS) { |
| setTextureUnit(s); |
| GR_GL(TexParameteri(GL_TEXTURE_2D, |
| GL_TEXTURE_WRAP_S, |
| newTexParams.fWrapS)); |
| } |
| if (newTexParams.fWrapT != oldTexParams.fWrapT) { |
| setTextureUnit(s); |
| GR_GL(TexParameteri(GL_TEXTURE_2D, |
| GL_TEXTURE_WRAP_T, |
| newTexParams.fWrapT)); |
| } |
| nextTexture->setTexParams(newTexParams); |
| |
| // The texture matrix has to compensate for texture width/height |
| // and NPOT-embedded-in-POT |
| fDirtyFlags.fTextureChangedMask |= (1 << s); |
| } else { |
| GrAssert(!"Rendering with texture vert flag set but no texture"); |
| return false; |
| } |
| } |
| } |
| |
| flushRenderTarget(); |
| |
| if ((fCurrDrawState.fFlagBits & kDither_StateBit) != |
| (fHWDrawState.fFlagBits & kDither_StateBit)) { |
| if (fCurrDrawState.fFlagBits & kDither_StateBit) { |
| GR_GL(Enable(GL_DITHER)); |
| } else { |
| GR_GL(Disable(GL_DITHER)); |
| } |
| } |
| |
| if ((fCurrDrawState.fFlagBits & kNoColorWrites_StateBit) != |
| (fHWDrawState.fFlagBits & kNoColorWrites_StateBit)) { |
| GLenum mask; |
| if (fCurrDrawState.fFlagBits & kNoColorWrites_StateBit) { |
| mask = GL_FALSE; |
| } else { |
| mask = GL_TRUE; |
| } |
| GR_GL(ColorMask(mask, mask, mask, mask)); |
| } |
| |
| #if GR_SUPPORT_GLDESKTOP |
| // ES doesn't support toggling GL_MULTISAMPLE and doesn't have |
| // smooth lines. |
| if (fDirtyFlags.fRenderTargetChanged || |
| (fCurrDrawState.fFlagBits & kAntialias_StateBit) != |
| (fHWDrawState.fFlagBits & kAntialias_StateBit)) { |
| GLint msaa = 0; |
| // only perform query if we know MSAA is supported. |
| // calling on non-MSAA target caused a crash in one environment, |
| // though I don't think it should. |
| if (fAASamples[kHigh_AALevel]) { |
| GR_GL_GetIntegerv(GL_SAMPLE_BUFFERS, &msaa); |
| } |
| if (fCurrDrawState.fFlagBits & kAntialias_StateBit) { |
| if (msaa) { |
| GR_GL(Enable(GL_MULTISAMPLE)); |
| } else { |
| GR_GL(Enable(GL_LINE_SMOOTH)); |
| } |
| } else { |
| if (msaa) { |
| GR_GL(Disable(GL_MULTISAMPLE)); |
| } |
| GR_GL(Disable(GL_LINE_SMOOTH)); |
| } |
| } |
| #endif |
| |
| bool blendOff = canDisableBlend(); |
| if (fHWBlendDisabled != blendOff) { |
| if (blendOff) { |
| GR_GL(Disable(GL_BLEND)); |
| } else { |
| GR_GL(Enable(GL_BLEND)); |
| } |
| fHWBlendDisabled = blendOff; |
| } |
| |
| if (!blendOff) { |
| if (fHWDrawState.fSrcBlend != fCurrDrawState.fSrcBlend || |
| fHWDrawState.fDstBlend != fCurrDrawState.fDstBlend) { |
| GR_GL(BlendFunc(gXfermodeCoeff2Blend[fCurrDrawState.fSrcBlend], |
| gXfermodeCoeff2Blend[fCurrDrawState.fDstBlend])); |
| fHWDrawState.fSrcBlend = fCurrDrawState.fSrcBlend; |
| fHWDrawState.fDstBlend = fCurrDrawState.fDstBlend; |
| } |
| if ((BlendCoefReferencesConstant(fCurrDrawState.fSrcBlend) || |
| BlendCoefReferencesConstant(fCurrDrawState.fDstBlend)) && |
| fHWDrawState.fBlendConstant != fCurrDrawState.fBlendConstant) { |
| |
| float c[] = { |
| GrColorUnpackR(fCurrDrawState.fBlendConstant) / 255.f, |
| GrColorUnpackG(fCurrDrawState.fBlendConstant) / 255.f, |
| GrColorUnpackB(fCurrDrawState.fBlendConstant) / 255.f, |
| GrColorUnpackA(fCurrDrawState.fBlendConstant) / 255.f |
| }; |
| GR_GL(BlendColor(c[0], c[1], c[2], c[3])); |
| fHWDrawState.fBlendConstant = fCurrDrawState.fBlendConstant; |
| } |
| } |
| |
| if (fHWDrawState.fDrawFace != fCurrDrawState.fDrawFace) { |
| switch (fCurrDrawState.fDrawFace) { |
| case kCCW_DrawFace: |
| glEnable(GL_CULL_FACE); |
| GR_GL(CullFace(GL_BACK)); |
| break; |
| case kCW_DrawFace: |
| GR_GL(Enable(GL_CULL_FACE)); |
| GR_GL(CullFace(GL_FRONT)); |
| break; |
| case kBoth_DrawFace: |
| GR_GL(Disable(GL_CULL_FACE)); |
| break; |
| default: |
| GrCrash("Unknown draw face."); |
| } |
| fHWDrawState.fDrawFace = fCurrDrawState.fDrawFace; |
| } |
| |
| #if GR_DEBUG |
| // check for circular rendering |
| for (int s = 0; s < kNumStages; ++s) { |
| GrAssert(!VertexUsesStage(s, fGeometrySrc.fVertexLayout) || |
| NULL == fCurrDrawState.fRenderTarget || |
| NULL == fCurrDrawState.fTextures[s] || |
| fCurrDrawState.fTextures[s]->asRenderTarget() != |
| fCurrDrawState.fRenderTarget); |
| } |
| #endif |
| |
| flushStencil(); |
| |
| // flushStencil may look at the private state bits, so keep it before this. |
| fHWDrawState.fFlagBits = fCurrDrawState.fFlagBits; |
| return true; |
| } |
| |
| void GrGpuGL::notifyVertexBufferBind(const GrGLVertexBuffer* buffer) { |
| if (fHWGeometryState.fVertexBuffer != buffer) { |
| fHWGeometryState.fArrayPtrsDirty = true; |
| fHWGeometryState.fVertexBuffer = buffer; |
| } |
| } |
| |
| void GrGpuGL::notifyVertexBufferDelete(const GrGLVertexBuffer* buffer) { |
| GrAssert(!(kBuffer_GeometrySrcType == fGeometrySrc.fVertexSrc && |
| buffer == fGeometrySrc.fVertexBuffer)); |
| |
| if (fHWGeometryState.fVertexBuffer == buffer) { |
| // deleting bound buffer does implied bind to 0 |
| fHWGeometryState.fVertexBuffer = NULL; |
| fHWGeometryState.fArrayPtrsDirty = true; |
| } |
| } |
| |
| void GrGpuGL::notifyIndexBufferBind(const GrGLIndexBuffer* buffer) { |
| fGeometrySrc.fIndexBuffer = buffer; |
| } |
| |
| void GrGpuGL::notifyIndexBufferDelete(const GrGLIndexBuffer* buffer) { |
| GrAssert(!(kBuffer_GeometrySrcType == fGeometrySrc.fIndexSrc && |
| buffer == fGeometrySrc.fIndexBuffer)); |
| |
| if (fHWGeometryState.fIndexBuffer == buffer) { |
| // deleting bound buffer does implied bind to 0 |
| fHWGeometryState.fIndexBuffer = NULL; |
| } |
| } |
| |
| void GrGpuGL::notifyRenderTargetDelete(GrRenderTarget* renderTarget) { |
| GrAssert(NULL != renderTarget); |
| if (fCurrDrawState.fRenderTarget == renderTarget) { |
| fCurrDrawState.fRenderTarget = NULL; |
| } |
| if (fHWDrawState.fRenderTarget == renderTarget) { |
| fHWDrawState.fRenderTarget = NULL; |
| } |
| } |
| |
| void GrGpuGL::notifyTextureDelete(GrGLTexture* texture) { |
| for (int s = 0; s < kNumStages; ++s) { |
| if (fCurrDrawState.fTextures[s] == texture) { |
| fCurrDrawState.fTextures[s] = NULL; |
| } |
| if (fHWDrawState.fTextures[s] == texture) { |
| // deleting bound texture does implied bind to 0 |
| fHWDrawState.fTextures[s] = NULL; |
| } |
| } |
| } |
| |
| bool GrGpuGL::canBeTexture(GrTexture::PixelConfig config, |
| GLenum* internalFormat, |
| GLenum* format, |
| GLenum* type) { |
| switch (config) { |
| case GrTexture::kRGBA_8888_PixelConfig: |
| case GrTexture::kRGBX_8888_PixelConfig: // todo: can we tell it our X? |
| *format = GR_GL_32BPP_COLOR_FORMAT; |
| #if GR_SUPPORT_GLES |
| // according to GL_EXT_texture_format_BGRA8888 the *internal* |
| // format for a BGRA is BGRA not RGBA (as on desktop) |
| *internalFormat = GR_GL_32BPP_COLOR_FORMAT; |
| #else |
| *internalFormat = GL_RGBA; |
| #endif |
| *type = GL_UNSIGNED_BYTE; |
| break; |
| case GrTexture::kRGB_565_PixelConfig: |
| *format = GL_RGB; |
| *internalFormat = GL_RGB; |
| *type = GL_UNSIGNED_SHORT_5_6_5; |
| break; |
| case GrTexture::kRGBA_4444_PixelConfig: |
| *format = GL_RGBA; |
| *internalFormat = GL_RGBA; |
| *type = GL_UNSIGNED_SHORT_4_4_4_4; |
| break; |
| case GrTexture::kIndex_8_PixelConfig: |
| if (this->supports8BitPalette()) { |
| *format = GR_PALETTE8_RGBA8; |
| *internalFormat = GR_PALETTE8_RGBA8; |
| *type = GL_UNSIGNED_BYTE; // unused I think |
| } else { |
| return false; |
| } |
| break; |
| case GrTexture::kAlpha_8_PixelConfig: |
| *format = GL_ALPHA; |
| *internalFormat = GL_ALPHA; |
| *type = GL_UNSIGNED_BYTE; |
| break; |
| default: |
| return false; |
| } |
| return true; |
| } |
| |
| void GrGpuGL::setTextureUnit(int unit) { |
| GrAssert(unit >= 0 && unit < kNumStages); |
| if (fActiveTextureUnitIdx != unit) { |
| GR_GL(ActiveTexture(GL_TEXTURE0 + unit)); |
| fActiveTextureUnitIdx = unit; |
| } |
| } |
| |
| void GrGpuGL::setSpareTextureUnit() { |
| if (fActiveTextureUnitIdx != (GL_TEXTURE0 + SPARE_TEX_UNIT)) { |
| GR_GL(ActiveTexture(GL_TEXTURE0 + SPARE_TEX_UNIT)); |
| fActiveTextureUnitIdx = SPARE_TEX_UNIT; |
| } |
| } |
| |
| /* On ES the internalFormat and format must match for TexImage and we use |
| GL_RGB, GL_RGBA for color formats. We also generally like having the driver |
| decide the internalFormat. However, on ES internalFormat for |
| RenderBufferStorage* has to be a specific format (not a base format like |
| GL_RGBA). |
| */ |
| bool GrGpuGL::fboInternalFormat(GrTexture::PixelConfig config, GLenum* format) { |
| switch (config) { |
| case GrTexture::kRGBA_8888_PixelConfig: |
| case GrTexture::kRGBX_8888_PixelConfig: |
| if (fRGBA8Renderbuffer) { |
| *format = GR_RGBA8; |
| return true; |
| } else { |
| return false; |
| } |
| #if GR_SUPPORT_GLES // ES2 supports 565. ES1 supports it with FBO extension |
| // desktop GL has no such internal format |
| case GrTexture::kRGB_565_PixelConfig: |
| *format = GR_RGB565; |
| return true; |
| #endif |
| case GrTexture::kRGBA_4444_PixelConfig: |
| *format = GL_RGBA4; |
| return true; |
| default: |
| return false; |
| } |
| } |
| |
| void GrGpuGL::resetDirtyFlags() { |
| Gr_bzero(&fDirtyFlags, sizeof(fDirtyFlags)); |
| } |
| |
| void GrGpuGL::setBuffers(bool indexed, |
| int* extraVertexOffset, |
| int* extraIndexOffset) { |
| |
| GrAssert(NULL != extraVertexOffset); |
| |
| GrGLVertexBuffer* vbuf; |
| switch (fGeometrySrc.fVertexSrc) { |
| case kBuffer_GeometrySrcType: |
| *extraVertexOffset = 0; |
| vbuf = (GrGLVertexBuffer*) fGeometrySrc.fVertexBuffer; |
| break; |
| case kArray_GeometrySrcType: |
| case kReserved_GeometrySrcType: |
| finalizeReservedVertices(); |
| *extraVertexOffset = fCurrPoolStartVertex; |
| vbuf = (GrGLVertexBuffer*) fCurrPoolVertexBuffer; |
| break; |
| default: |
| vbuf = NULL; // suppress warning |
| GrCrash("Unknown geometry src type!"); |
| } |
| |
| GrAssert(NULL != vbuf); |
| GrAssert(!vbuf->isLocked()); |
| if (fHWGeometryState.fVertexBuffer != vbuf) { |
| GR_GL(BindBuffer(GL_ARRAY_BUFFER, vbuf->bufferID())); |
| fHWGeometryState.fArrayPtrsDirty = true; |
| fHWGeometryState.fVertexBuffer = vbuf; |
| } |
| |
| if (indexed) { |
| GrAssert(NULL != extraIndexOffset); |
| |
| GrGLIndexBuffer* ibuf; |
| switch (fGeometrySrc.fIndexSrc) { |
| case kBuffer_GeometrySrcType: |
| *extraIndexOffset = 0; |
| ibuf = (GrGLIndexBuffer*)fGeometrySrc.fIndexBuffer; |
| break; |
| case kArray_GeometrySrcType: |
| case kReserved_GeometrySrcType: |
| finalizeReservedIndices(); |
| *extraIndexOffset = fCurrPoolStartIndex; |
| ibuf = (GrGLIndexBuffer*) fCurrPoolIndexBuffer; |
| break; |
| default: |
| ibuf = NULL; // suppress warning |
| GrCrash("Unknown geometry src type!"); |
| } |
| |
| GrAssert(NULL != ibuf); |
| GrAssert(!ibuf->isLocked()); |
| if (fHWGeometryState.fIndexBuffer != ibuf) { |
| GR_GL(BindBuffer(GL_ELEMENT_ARRAY_BUFFER, ibuf->bufferID())); |
| fHWGeometryState.fIndexBuffer = ibuf; |
| } |
| } |
| } |
