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Diffstat (limited to 'gpu/src/GrGpuGL.cpp')
| -rw-r--r-- | gpu/src/GrGpuGL.cpp | 1871 |
1 files changed, 1871 insertions, 0 deletions
diff --git a/gpu/src/GrGpuGL.cpp b/gpu/src/GrGpuGL.cpp new file mode 100644 index 0000000..dc9b92d --- /dev/null +++ b/gpu/src/GrGpuGL.cpp @@ -0,0 +1,1871 @@ +/* + 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, +}; + +/////////////////////////////////////////////////////////////////////////////// + +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(GrGLExts exts, 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_GLEXT(exts, GenFramebuffers(1, &testFBO)); + GR_GLEXT(exts, 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_GLEXT(exts, FramebufferTexture2D(GR_FRAMEBUFFER, GR_COLOR_ATTACHMENT0, + GL_TEXTURE_2D, testRTTex, 0)); + GLenum status = GR_GLEXT(exts, CheckFramebufferStatus(GR_FRAMEBUFFER)); + GR_GLEXT(exts, DeleteFramebuffers(1, &testFBO)); + GR_GL(DeleteTextures(1, &testRTTex)); + + GR_GL(ActiveTexture(savedTexUnit)); + GR_GLEXT(exts, BindFramebuffer(GR_FRAMEBUFFER, savedFBO)); + + return status == GR_FRAMEBUFFER_COMPLETE; +} + +GrGpuGL::GrGpuGL() { + + if (gPrintStartupSpew) { + GrPrintf("------------------------- create GrGpuGL %p --------------\n", + this); + GrPrintf("------ VENDOR %s\n", glGetString(GL_VENDOR)); + GrPrintf("------ RENDERER %s\n", glGetString(GL_RENDERER)); + GrPrintf("------ VERSION %s\n", glGetString(GL_VERSION)); + GrPrintf("------ EXTENSIONS\n %s \n", glGetString(GL_EXTENSIONS)); + } + + GrGLClearErr(); + + GrGLInitExtensions(&fExts); + + 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(fExts, 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(fExts, 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(fExts, 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(fExts, 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.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_GLEXT(fExts, 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_GLEXT(fExts, GenFramebuffers(1, &rtIDs.fRTFBOID)); + GrAssert(0 != rtIDs.fRTFBOID); + GR_GLEXT(fExts, GenRenderbuffers(1, &rtIDs.fMSColorRenderbufferID)); + GrAssert(0 != rtIDs.fMSColorRenderbufferID); + if (!fboInternalFormat(desc.fFormat, &msColorRenderbufferFormat)) { + GR_GLEXT(fExts, + DeleteRenderbuffers(1, &rtIDs.fMSColorRenderbufferID)); + GR_GL(DeleteTextures(1, &glDesc.fTextureID)); + GR_GLEXT(fExts, DeleteFramebuffers(1, &rtIDs.fTexFBOID)); + GR_GLEXT(fExts, DeleteFramebuffers(1, &rtIDs.fRTFBOID)); + return return_null_texture(); + } + } else { + rtIDs.fRTFBOID = rtIDs.fTexFBOID; + } + int attempts = 1; + if (!(kNoPathRendering_TextureFlag & desc.fFlags)) { + GR_GLEXT(fExts, 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_GLEXT(fExts, BindRenderbuffer(GR_RENDERBUFFER, + rtIDs.fStencilRenderbufferID)); + if (samples > 1) { + GR_GLEXT_NO_ERR(fExts, RenderbufferStorageMultisample( + GR_RENDERBUFFER, + samples, + gStencilFormats[i].fEnum, + glDesc.fAllocWidth, + glDesc.fAllocHeight)); + } else { + GR_GLEXT_NO_ERR(fExts, 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_GLEXT(fExts, BindRenderbuffer(GR_RENDERBUFFER, + rtIDs.fMSColorRenderbufferID)); + GR_GLEXT_NO_ERR(fExts, RenderbufferStorageMultisample( + GR_RENDERBUFFER, + samples, + msColorRenderbufferFormat, + glDesc.fAllocWidth, + glDesc.fAllocHeight)); + err = glGetError(); + if (err != GL_NO_ERROR) { + continue; + } + } + GR_GLEXT(fExts, BindFramebuffer(GR_FRAMEBUFFER, rtIDs.fTexFBOID)); + +#if GR_COLLECT_STATS + ++fStats.fRenderTargetChngCnt; +#endif + if (kIMG_MSFBO == fMSFBOType && samples > 1) { + GR_GLEXT(fExts, FramebufferTexture2DMultisample( + GR_FRAMEBUFFER, + GR_COLOR_ATTACHMENT0, + GL_TEXTURE_2D, + glDesc.fTextureID, + 0, + samples)); + + } else { + GR_GLEXT(fExts, FramebufferTexture2D(GR_FRAMEBUFFER, + GR_COLOR_ATTACHMENT0, + GL_TEXTURE_2D, + glDesc.fTextureID, 0)); + } + if (rtIDs.fRTFBOID != rtIDs.fTexFBOID) { + GLenum status = GR_GLEXT(fExts, + CheckFramebufferStatus(GR_FRAMEBUFFER)); + if (status != GR_FRAMEBUFFER_COMPLETE) { + GrPrintf("-- glCheckFramebufferStatus %x %d %d\n", + status, desc.fWidth, desc.fHeight); + continue; + } + GR_GLEXT(fExts, BindFramebuffer(GR_FRAMEBUFFER, rtIDs.fRTFBOID)); + #if GR_COLLECT_STATS + ++fStats.fRenderTargetChngCnt; + #endif + GR_GLEXT(fExts, 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_GLEXT(fExts, FramebufferRenderbuffer(GR_FRAMEBUFFER, + GR_STENCIL_ATTACHMENT, + GR_RENDERBUFFER, + rtIDs.fStencilRenderbufferID)); + } + status = GR_GLEXT(fExts, 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_GLEXT(fExts, FramebufferRenderbuffer(GR_FRAMEBUFFER, + GR_STENCIL_ATTACHMENT, + GR_RENDERBUFFER, + 0)); + GR_GLEXT(fExts, + FramebufferRenderbuffer(GR_FRAMEBUFFER, + GR_DEPTH_STENCIL_ATTACHMENT, + GR_RENDERBUFFER, + rtIDs.fStencilRenderbufferID)); + status = GR_GLEXT(fExts, 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_GLEXT(fExts, 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_GLEXT(fExts, + DeleteRenderbuffers(1, &rtIDs.fStencilRenderbufferID)); + } + if (rtIDs.fMSColorRenderbufferID) { + GR_GLEXT(fExts, + DeleteRenderbuffers(1, &rtIDs.fMSColorRenderbufferID)); + } + if (rtIDs.fRTFBOID != rtIDs.fTexFBOID) { + GR_GLEXT(fExts, DeleteFramebuffers(1, &rtIDs.fRTFBOID)); + } + if (rtIDs.fTexFBOID) { + GR_GLEXT(fExts, 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_GLEXT(fExts, BindFramebuffer(GR_FRAMEBUFFER, rt->renderFBOID())); + #if GR_COLLECT_STATS + ++fStats.fRenderTargetChngCnt; + #endif + rt->setDirty(true); + #if GR_DEBUG + GLenum status = GR_GLEXT(fExts, 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_GLEXT(fExts, BindFramebuffer(GR_READ_FRAMEBUFFER, + rt->renderFBOID())); + GR_GLEXT(fExts, 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_GLEXT(fExts, ResolveMultisampleFramebuffer()); + fHWBounds.fScissorRect.invalidate(); + fHWBounds.fScissorEnabled = true; + } else { + GR_GLEXT(fExts, 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 (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; + } + } +} |