| /* |
| Copyright 2010 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" |
| #include <stdio.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, |
| }; |
| |
| bool has_gl_extension(const char* ext) { |
| const char* glstr = (const char*) glGetString(GL_EXTENSIONS); |
| |
| int extLength = strlen(ext); |
| |
| while (true) { |
| int n = strcspn(glstr, " "); |
| if (n == extLength && 0 == strncmp(ext, glstr, n)) { |
| return true; |
| } |
| if (0 == glstr[n]) { |
| return false; |
| } |
| glstr += n+1; |
| } |
| } |
| |
| void gl_version(int* major, int* minor) { |
| const char* v = (const char*) glGetString(GL_VERSION); |
| if (NULL == v) { |
| GrAssert(0); |
| *major = 0; |
| *minor = 0; |
| return; |
| } |
| #if GR_SUPPORT_GLDESKTOP |
| int n = sscanf(v, "%d.%d", major, minor); |
| if (n != 2) { |
| GrAssert(0); |
| *major = 0; |
| *minor = 0; |
| return; |
| } |
| #else |
| char profile[2]; |
| int n = sscanf(v, "OpenGL ES-%c%c %d.%d", profile, profile+1, major, minor); |
| bool ok = 4 == n; |
| if (!ok) { |
| int n = sscanf(v, "OpenGL ES %d.%d", major, minor); |
| ok = 2 == n; |
| } |
| if (!ok) { |
| GrAssert(0); |
| *major = 0; |
| *minor = 0; |
| return; |
| } |
| #endif |
| } |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| 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; |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| static bool gPrintStartupSpew; |
| |
| 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); |
| |
| resetContextHelper(); |
| |
| GrGLRenderTarget::GLRenderTargetIDs defaultRTIDs; |
| GR_GL_GetIntegerv(GR_FRAMEBUFFER_BINDING, (GLint*)&defaultRTIDs.fRTFBOID); |
| defaultRTIDs.fTexFBOID = defaultRTIDs.fRTFBOID; |
| defaultRTIDs.fMSColorRenderbufferID = 0; |
| defaultRTIDs.fStencilRenderbufferID = 0; |
| GLint vp[4]; |
| GR_GL_GetIntegerv(GL_VIEWPORT, vp); |
| fHWBounds.fViewportRect.setLTRB(vp[0], |
| vp[1] + vp[3], |
| vp[0] + vp[2], |
| vp[1]); |
| defaultRTIDs.fOwnIDs = false; |
| |
| fDefaultRenderTarget = new GrGLRenderTarget(defaultRTIDs, |
| fHWBounds.fViewportRect, |
| NULL, |
| this); |
| fHWDrawState.fRenderTarget = fDefaultRenderTarget; |
| fRenderTargetChanged = true; |
| |
| 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 |
| |
| fCurrDrawState = fHWDrawState; |
| |
| //////////////////////////////////////////////////////////////////////////// |
| // 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). |
| fSingleStencilPassForWinding = (major >= 2); |
| #else |
| // ES 2 has two sided stencil but 1.1 doesn't. There doesn't seem to be |
| // an ES1 extension. |
| fSingleStencilPassForWinding = (major >= 2); |
| #endif |
| if (gPrintStartupSpew) { |
| GrPrintf("Single Stencil Pass For Winding: %s\n", (fSingleStencilPassForWinding ? "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_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 |
| fNPOTTextureSupport = |
| (major >= 2 || has_gl_extension("GL_ARB_texture_non_power_of_two")) ? |
| kFull_NPOTTextureType : |
| kNone_NPOTTextureType; |
| #else |
| if (has_gl_extension("GL_OES_texture_npot")) { |
| fNPOTTextureSupport = kFull_NPOTTextureType; |
| } else if (major >= 2 || |
| has_gl_extension("GL_APPLE_texture_2D_limited_npot")) { |
| fNPOTTextureSupport = kNoRepeat_NPOTTextureType; |
| } else { |
| fNPOTTextureSupport = kNone_NPOTTextureType; |
| } |
| #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 |
| if (fNPOTTextureSupport < kFull_NPOTTextureType) { |
| bool npotFBOSuccess = fbo_test(fExts, 128, 128); |
| if (gPrintStartupSpew) { |
| if (!npotFBOSuccess) { |
| GrPrintf("FBO Sanity Test: FAILED\n"); |
| } else { |
| GrPrintf("FBO Sanity Test: PASSED\n"); |
| } |
| } |
| } |
| |
| /* 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. |
| */ |
| if (fNPOTTextureSupport == kFull_NPOTTextureType) { |
| bool npotFBOSuccess = fbo_test(fExts, 200, 200); |
| if (!npotFBOSuccess) { |
| fNPOTTextureSupport = kNonRendertarget_NPOTTextureType; |
| if (gPrintStartupSpew) { |
| GrPrintf("NPOT Renderbuffer Test: FAILED\n"); |
| } |
| } else { |
| if (gPrintStartupSpew) { |
| GrPrintf("NPOT Renderbuffer Test: PASSED\n"); |
| } |
| } |
| } |
| |
| if (gPrintStartupSpew) { |
| switch (fNPOTTextureSupport) { |
| case kNone_NPOTTextureType: |
| GrPrintf("NPOT Support: NONE\n"); |
| break; |
| case kNoRepeat_NPOTTextureType: |
| GrPrintf("NPOT Support: NO REPEAT\n"); |
| break; |
| case kNonRendertarget_NPOTTextureType: |
| GrPrintf("NPOT Support: NO FBOTEX\n"); |
| break; |
| case kFull_NPOTTextureType: |
| GrPrintf("NPOT Support: FULL\n"); |
| break; |
| } |
| } |
| |
| /* 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; |
| (kFull_NPOTTextureType != fNPOTTextureSupport) ? i *= 2 : ++i) { |
| 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; |
| (kFull_NPOTTextureType != fNPOTTextureSupport) ? 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); |
| |
| #if GR_IOS_BUILD |
| /* |
| The iPad seems to fail, at least sometimes, if the height is < 16, |
| so we pin the values here for now. A better fix might be to |
| conditionalize this based on known that its an iPad (or some other |
| check). |
| */ |
| fMinRenderTargetWidth = GrMax<GLuint>(fMinRenderTargetWidth, 16); |
| fMinRenderTargetHeight = GrMax<GLuint>(fMinRenderTargetHeight, 16); |
| #endif |
| // bind back to original FBO |
| GR_GLEXT(fExts, BindFramebuffer(GR_FRAMEBUFFER, defaultRTIDs.fRTFBOID)); |
| #if GR_COLLECT_STATS |
| ++fStats.fRenderTargetChngCnt; |
| #endif |
| eraseStencil(0, ~0); |
| } |
| |
| GrGpuGL::~GrGpuGL() { |
| fDefaultRenderTarget->abandon(); |
| fDefaultRenderTarget->unref(); |
| } |
| |
| void GrGpuGL::resetContextHelper() { |
| // We detect cases when blending is effectively off |
| fHWBlendDisabled = false; |
| GR_GL(Enable(GL_BLEND)); |
| |
| // this is always disabled |
| GR_GL(Disable(GL_CULL_FACE)); |
| |
| 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 |
| |
| // we only ever use lines in hairline mode |
| GR_GL(LineWidth(1)); |
| |
| // invalid |
| fActiveTextureUnitIdx = -1; |
| |
| fHWDrawState.fFlagBits = 0; |
| |
| // illegal values |
| fHWDrawState.fSrcBlend = (BlendCoeff)-1; |
| fHWDrawState.fDstBlend = (BlendCoeff)-1; |
| fHWDrawState.fColor = GrColor_ILLEGAL; |
| fHWDrawState.fPointSize = -1; |
| |
| fHWDrawState.fViewMatrix.setScale(GR_ScalarMax, GR_ScalarMax); // illegal |
| |
| for (int s = 0; s < kNumStages; ++s) { |
| fHWDrawState.fTextures[s] = NULL; |
| fHWDrawState.fSamplerStates[s].setRadial2Params(-GR_ScalarMax, |
| -GR_ScalarMax, |
| true); |
| fHWDrawState.fTextureMatrices[s].setScale(GR_ScalarMax, GR_ScalarMax); |
| } |
| |
| GR_GL(Scissor(0,0,0,0)); |
| fHWBounds.fScissorRect.setLTRB(0,0,0,0); |
| fHWBounds.fScissorEnabled = false; |
| GR_GL(Disable(GL_SCISSOR_TEST)); |
| |
| // disabling the stencil test also disables |
| // stencil buffer writes |
| GR_GL(Disable(GL_STENCIL_TEST)); |
| GR_GL(StencilMask(0xffffffff)); |
| GR_GL(ColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE)); |
| fHWDrawState.fReverseFill = false; |
| fHWDrawState.fStencilPass = kNone_StencilPass; |
| fHWStencilClip = false; |
| |
| fHWGeometryState.fIndexBuffer = NULL; |
| fHWGeometryState.fVertexBuffer = NULL; |
| GR_GL(BindBuffer(GL_ARRAY_BUFFER, 0)); |
| GR_GL(BindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0)); |
| |
| fHWDrawState.fRenderTarget = NULL; |
| } |
| |
| void GrGpuGL::resetContext() { |
| INHERITED::resetContext(); |
| resetContextHelper(); |
| } |
| |
| |
| // defines stencil formats from more to less preferred |
| #if GR_SUPPORT_GLES |
| GLenum GR_GL_STENCIL_FORMAT_ARRAY[] = { |
| GR_STENCIL_INDEX8, |
| }; |
| #else |
| GLenum GR_GL_STENCIL_FORMAT_ARRAY[] = { |
| GR_STENCIL_INDEX8, |
| GR_STENCIL_INDEX16, |
| GR_UNSIGNED_INT_24_8, |
| GR_DEPTH_STENCIL, |
| }; |
| #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 |
| |
| GrRenderTarget* GrGpuGL::createPlatformRenderTarget( |
| intptr_t platformRenderTarget, |
| int width, int height) { |
| GrGLRenderTarget::GLRenderTargetIDs rtIDs; |
| rtIDs.fStencilRenderbufferID = 0; |
| rtIDs.fMSColorRenderbufferID = 0; |
| rtIDs.fTexFBOID = 0; |
| rtIDs.fOwnIDs = false; |
| |
| GrIRect viewport; |
| |
| // viewport is in GL coords (top >= bottom) |
| viewport.setLTRB(0, height, width, 0); |
| |
| rtIDs.fRTFBOID = (GLuint)platformRenderTarget; |
| rtIDs.fTexFBOID = (GLuint)platformRenderTarget; |
| |
| GrGLRenderTarget* rt = new GrGLRenderTarget(rtIDs, viewport, NULL, this); |
| |
| return rt; |
| } |
| |
| GrTexture* GrGpuGL::createTexture(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.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 (fNPOTTextureSupport < kNonRendertarget_NPOTTextureType || |
| (fNPOTTextureSupport == kNonRendertarget_NPOTTextureType && |
| renderTarget)) { |
| glDesc.fAllocWidth = GrNextPow2(desc.fWidth); |
| glDesc.fAllocHeight = GrNextPow2(desc.fHeight); |
| } |
| |
| if (renderTarget) { |
| glDesc.fAllocWidth = GrMax<int>(fMinRenderTargetWidth, |
| glDesc.fAllocWidth); |
| glDesc.fAllocHeight = GrMax<int>(fMinRenderTargetHeight, |
| glDesc.fAllocHeight); |
| } |
| |
| 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(GR_GL_STENCIL_FORMAT_ARRAY); |
| } |
| |
| // 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, |
| GR_GL_STENCIL_FORMAT_ARRAY[i], |
| glDesc.fAllocWidth, |
| glDesc.fAllocHeight)); |
| } else { |
| GR_GLEXT_NO_ERR(fExts, RenderbufferStorage( |
| GR_RENDERBUFFER, |
| GR_GL_STENCIL_FORMAT_ARRAY[i], |
| 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; |
| 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; |
| } |
| |
| GrRenderTarget* GrGpuGL::defaultRenderTarget() { |
| return fDefaultRenderTarget; |
| } |
| |
| GrVertexBuffer* GrGpuGL::createVertexBuffer(uint32_t size, bool dynamic) { |
| GLuint id; |
| GR_GL(GenBuffers(1, &id)); |
| if (id) { |
| GR_GL(BindBuffer(GL_ARRAY_BUFFER, id)); |
| 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::createIndexBuffer(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::setDefaultRenderTargetSize(uint32_t width, uint32_t height) { |
| GrIRect viewport(0, height, width, 0); |
| if (viewport != fDefaultRenderTarget->viewport()) { |
| fDefaultRenderTarget->setViewport(viewport); |
| if (fHWDrawState.fRenderTarget == fDefaultRenderTarget) { |
| fHWDrawState.fRenderTarget = NULL; |
| } |
| } |
| } |
| |
| void GrGpuGL::flushScissor(const GrIRect* rect) { |
| GrAssert(NULL != fCurrDrawState.fRenderTarget); |
| const GrIRect& vp = |
| ((GrGLRenderTarget*)fCurrDrawState.fRenderTarget)->viewport(); |
| |
| if (NULL != rect && |
| rect->contains(vp)) { |
| rect = NULL; |
| } |
| |
| if (NULL != rect) { |
| GrIRect scissor; |
| // viewport is already in GL coords |
| // create a scissor in GL coords (top > bottom) |
| scissor.setLTRB(vp.fLeft + rect->fLeft, |
| vp.fTop - rect->fTop, |
| vp.fLeft + rect->fRight, |
| vp.fTop - rect->fBottom); |
| |
| if (fHWBounds.fScissorRect != scissor) { |
| GR_GL(Scissor(scissor.fLeft, scissor.fBottom, |
| scissor.width(), -scissor.height())); |
| 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::eraseColor(GrColor color) { |
| flushRenderTarget(); |
| if (fHWBounds.fScissorEnabled) { |
| GR_GL(Disable(GL_SCISSOR_TEST)); |
| } |
| GR_GL(ColorMask(GL_TRUE,GL_TRUE,GL_TRUE,GL_TRUE)); |
| 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)); |
| fHWBounds.fScissorEnabled = false; |
| fWriteMaskChanged = true; |
| } |
| |
| void GrGpuGL::eraseStencil(uint32_t value, uint32_t mask) { |
| flushRenderTarget(); |
| if (fHWBounds.fScissorEnabled) { |
| GR_GL(Disable(GL_SCISSOR_TEST)); |
| } |
| GR_GL(StencilMask(mask)); |
| GR_GL(ClearStencil(value)); |
| GR_GL(Clear(GL_STENCIL_BUFFER_BIT)); |
| fHWBounds.fScissorEnabled = false; |
| fWriteMaskChanged = true; |
| } |
| |
| void GrGpuGL::eraseStencilClip() { |
| GLint stencilBitCount; |
| GR_GL_GetIntegerv(GL_STENCIL_BITS, &stencilBitCount); |
| GrAssert(stencilBitCount > 0); |
| GLint clipStencilMask = (1 << (stencilBitCount - 1)); |
| eraseStencil(0, clipStencilMask); |
| } |
| |
| void GrGpuGL::forceRenderTargetFlush() { |
| flushRenderTarget(); |
| } |
| |
| bool GrGpuGL::readPixels(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; |
| } |
| |
| GrAssert(NULL != fCurrDrawState.fRenderTarget); |
| const GrIRect& vp = ((GrGLRenderTarget*)fCurrDrawState.fRenderTarget)->viewport(); |
| |
| // Brian says that viewport rects are already upside down (grrrrr) |
| glReadPixels(left, -vp.height() - top - height, width, height, |
| 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() { |
| 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 |
| fHWDrawState.fRenderTarget = fCurrDrawState.fRenderTarget; |
| const GrIRect& vp = rt->viewport(); |
| fRenderTargetChanged = true; |
| if (fHWBounds.fViewportRect != vp) { |
| GR_GL(Viewport(vp.fLeft, |
| vp.fBottom, |
| vp.width(), |
| -vp.height())); |
| fHWBounds.fViewportRect = vp; |
| } |
| } |
| } |
| |
| GLenum gPrimitiveType2GLMode[] = { |
| GL_TRIANGLES, |
| GL_TRIANGLE_STRIP, |
| GL_TRIANGLE_FAN, |
| GL_POINTS, |
| GL_LINES, |
| GL_LINE_STRIP |
| }; |
| |
| void GrGpuGL::drawIndexedHelper(PrimitiveType 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); |
| if (kReserved_GeometrySrcType == fGeometrySrc.fIndexSrc) { |
| indices = (GLvoid*)((intptr_t)indices + (intptr_t)fIndices.get()); |
| } else if (kArray_GeometrySrcType == fGeometrySrc.fIndexSrc) { |
| indices = (GLvoid*)((intptr_t)indices + |
| (intptr_t)fGeometrySrc.fIndexArray); |
| } |
| |
| GR_GL(DrawElements(gPrimitiveType2GLMode[type], indexCount, |
| GL_UNSIGNED_SHORT, indices)); |
| } |
| |
| void GrGpuGL::drawNonIndexedHelper(PrimitiveType type, |
| uint32_t startVertex, |
| uint32_t vertexCount) { |
| GrAssert((size_t)type < GR_ARRAY_COUNT(gPrimitiveType2GLMode)); |
| |
| GR_GL(DrawArrays(gPrimitiveType2GLMode[type], 0, vertexCount)); |
| } |
| |
| #if !defined(SK_GL_HAS_COLOR4UB) |
| static inline GrFixed byte2fixed(unsigned value) { |
| return (value + (value >> 7)) << 8; |
| } |
| #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->contentWidth(); |
| // we will have rendered to the top of the FBO. |
| GLint top = texture->allocHeight(); |
| GLint bottom = texture->allocHeight() - texture->contentHeight(); |
| 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.setEmpty(); |
| 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); |
| |
| } |
| } |
| |
| void GrGpuGL::flushStencil() { |
| |
| // 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 = |
| fWriteMaskChanged || |
| fHWStencilClip != stencilClip || |
| fHWDrawState.fStencilPass != fCurrDrawState.fStencilPass || |
| (kNone_StencilPass != fCurrDrawState.fStencilPass && |
| (StencilPass)kSetClip_StencilPass != fCurrDrawState.fStencilPass && |
| fHWDrawState.fReverseFill != fCurrDrawState.fReverseFill); |
| |
| if (stencilChange) { |
| GLint stencilBitCount; |
| GLint clipStencilMask; |
| GLint pathStencilMask; |
| GR_GL_GetIntegerv(GL_STENCIL_BITS, &stencilBitCount); |
| GrAssert(stencilBitCount > 0 || |
| kNone_StencilPass == fCurrDrawState.fStencilPass); |
| clipStencilMask = (1 << (stencilBitCount - 1)); |
| pathStencilMask = clipStencilMask - 1; |
| switch (fCurrDrawState.fStencilPass) { |
| case kNone_StencilPass: |
| if (stencilClip) { |
| GR_GL(Enable(GL_STENCIL_TEST)); |
| GR_GL(StencilFunc(GL_EQUAL, |
| clipStencilMask, |
| clipStencilMask)); |
| GR_GL(StencilOp(GL_KEEP, GL_KEEP, GL_KEEP)); |
| } else { |
| GR_GL(Disable(GL_STENCIL_TEST)); |
| } |
| GR_GL(ColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE)); |
| if (!fSingleStencilPassForWinding) { |
| GR_GL(Disable(GL_CULL_FACE)); |
| } |
| break; |
| case kEvenOddStencil_StencilPass: |
| GR_GL(Enable(GL_STENCIL_TEST)); |
| if (stencilClip) { |
| GR_GL(StencilFunc(GL_EQUAL, clipStencilMask, clipStencilMask)); |
| } else { |
| GR_GL(StencilFunc(GL_ALWAYS, 0x0, 0x0)); |
| } |
| GR_GL(StencilMask(pathStencilMask)); |
| GR_GL(ColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE)); |
| GR_GL(StencilOp(GL_KEEP, GL_INVERT, GL_INVERT)); |
| GR_GL(ColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE)); |
| if (!fSingleStencilPassForWinding) { |
| GR_GL(Disable(GL_CULL_FACE)); |
| } |
| break; |
| case kEvenOddColor_StencilPass: { |
| GR_GL(Enable(GL_STENCIL_TEST)); |
| GLint funcRef = 0; |
| GLuint funcMask = pathStencilMask; |
| if (stencilClip) { |
| funcRef |= clipStencilMask; |
| funcMask |= clipStencilMask; |
| } |
| if (!fCurrDrawState.fReverseFill) { |
| funcRef |= pathStencilMask; |
| } |
| glStencilFunc(GL_EQUAL, funcRef, funcMask); |
| glStencilMask(pathStencilMask); |
| GR_GL(StencilOp(GL_ZERO, GL_ZERO, GL_ZERO)); |
| GR_GL(ColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE)); |
| if (!fSingleStencilPassForWinding) { |
| GR_GL(Disable(GL_CULL_FACE)); |
| } |
| } break; |
| case kWindingStencil1_StencilPass: |
| GR_GL(Enable(GL_STENCIL_TEST)); |
| if (fHasStencilWrap) { |
| if (stencilClip) { |
| GR_GL(StencilFunc(GL_EQUAL, |
| clipStencilMask, |
| clipStencilMask)); |
| } else { |
| GR_GL(StencilFunc(GL_ALWAYS, 0x0, 0x0)); |
| } |
| if (fSingleStencilPassForWinding) { |
| GR_GL(StencilOpSeparate(GL_FRONT, GL_KEEP, |
| GL_INCR_WRAP, GL_INCR_WRAP)); |
| GR_GL(StencilOpSeparate(GL_BACK, GL_KEEP, |
| GL_DECR_WRAP, GL_DECR_WRAP)); |
| } else { |
| GR_GL(StencilOp(GL_KEEP, GL_INCR_WRAP, GL_INCR_WRAP)); |
| GR_GL(Enable(GL_CULL_FACE)); |
| GR_GL(CullFace(GL_BACK)); |
| } |
| } else { |
| // If we don't have wrap then we use the Func to detect |
| // values that would wrap (0 on decr and mask on incr). We |
| // make the func fail on these values and use the sfail op |
| // to effectively wrap by inverting. |
| // This applies whether we are doing a two-pass (front faces |
| // followed by back faces) or a single pass (separate func/op) |
| |
| // Note that in the case where we are also using stencil to |
| // clip this means we will write into the path bits in clipped |
| // out pixels. We still apply the clip bit in the color pass |
| // stencil func so we don't draw color outside the clip. |
| // We also will clear the stencil bits in clipped pixels by |
| // using zero in the sfail op with write mask set to the |
| // path mask. |
| GR_GL(Enable(GL_STENCIL_TEST)); |
| if (fSingleStencilPassForWinding) { |
| GR_GL(StencilFuncSeparate(GL_FRONT, |
| GL_NOTEQUAL, |
| pathStencilMask, |
| pathStencilMask)); |
| GR_GL(StencilFuncSeparate(GL_BACK, |
| GL_NOTEQUAL, |
| 0x0, |
| pathStencilMask)); |
| GR_GL(StencilOpSeparate(GL_FRONT, GL_INVERT, |
| GL_INCR, GL_INCR)); |
| GR_GL(StencilOpSeparate(GL_BACK, GL_INVERT, |
| GL_DECR, GL_DECR)); |
| } else { |
| GR_GL(StencilFunc(GL_NOTEQUAL, |
| pathStencilMask, |
| pathStencilMask)); |
| GR_GL(StencilOp(GL_INVERT, GL_INCR, GL_INCR)); |
| GR_GL(Enable(GL_CULL_FACE)); |
| GR_GL(CullFace(GL_BACK)); |
| } |
| } |
| GR_GL(StencilMask(pathStencilMask)); |
| GR_GL(ColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE)); |
| break; |
| case kWindingStencil2_StencilPass: |
| GrAssert(!fSingleStencilPassForWinding); |
| GR_GL(Enable(GL_STENCIL_TEST)); |
| if (fHasStencilWrap) { |
| if (stencilClip) { |
| GR_GL(StencilFunc(GL_EQUAL, |
| clipStencilMask, |
| clipStencilMask)); |
| } else { |
| GR_GL(StencilFunc(GL_ALWAYS, 0x0, 0x0)); |
| } |
| GR_GL(StencilOp(GL_DECR_WRAP, GL_DECR_WRAP, GL_DECR_WRAP)); |
| } else { |
| GR_GL(StencilFunc(GL_NOTEQUAL, 0x0, pathStencilMask)); |
| GR_GL(StencilOp(GL_INVERT, GL_DECR, GL_DECR)); |
| } |
| GR_GL(StencilMask(pathStencilMask)); |
| GR_GL(Enable(GL_CULL_FACE)); |
| GR_GL(CullFace(GL_FRONT)); |
| GR_GL(ColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE)); |
| break; |
| case kWindingColor_StencilPass: { |
| GR_GL(Enable(GL_STENCIL_TEST)); |
| GLint funcRef = 0; |
| GLuint funcMask = pathStencilMask; |
| GLenum funcFunc; |
| if (stencilClip) { |
| funcRef |= clipStencilMask; |
| funcMask |= clipStencilMask; |
| } |
| if (fCurrDrawState.fReverseFill) { |
| funcFunc = GL_EQUAL; |
| } else { |
| funcFunc = GL_LESS; |
| } |
| GR_GL(StencilFunc(funcFunc, funcRef, funcMask)); |
| GR_GL(StencilMask(pathStencilMask)); |
| // must zero in sfail because winding w/o wrap will write |
| // path stencil bits in clipped out pixels |
| GR_GL(StencilOp(GL_ZERO, GL_ZERO, GL_ZERO)); |
| GR_GL(ColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE)); |
| if (!fSingleStencilPassForWinding) { |
| GR_GL(Disable(GL_CULL_FACE)); |
| } |
| } break; |
| case kSetClip_StencilPass: |
| GR_GL(Enable(GL_STENCIL_TEST)); |
| GR_GL(StencilFunc(GL_ALWAYS, clipStencilMask, clipStencilMask)); |
| GR_GL(StencilOp(GL_REPLACE, GL_REPLACE, GL_REPLACE)); |
| GR_GL(StencilMask(clipStencilMask)); |
| GR_GL(ColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE)); |
| if (!fSingleStencilPassForWinding) { |
| GR_GL(Disable(GL_CULL_FACE)); |
| } |
| break; |
| default: |
| GrAssert(!"Unexpected stencil pass."); |
| break; |
| |
| } |
| fHWDrawState.fStencilPass = fCurrDrawState.fStencilPass; |
| fHWDrawState.fReverseFill = fCurrDrawState.fReverseFill; |
| fWriteMaskChanged = false; |
| fHWStencilClip = stencilClip; |
| } |
| } |
| |
| void GrGpuGL::flushGLStateCommon(PrimitiveType type) { |
| |
| 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); |
| } else { |
| GrAssert(!"Rendering with texture vert flag set but no texture"); |
| if (NULL != fHWDrawState.fTextures[s]) { |
| setTextureUnit(s); |
| GR_GL(BindTexture(GL_TEXTURE_2D, 0)); |
| // GrPrintf("---- bindtexture 0\n"); |
| #if GR_COLLECT_STATS |
| ++fStats.fTextureChngCnt; |
| #endif |
| fHWDrawState.fTextures[s] = NULL; |
| } |
| } |
| } |
| } |
| |
| 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 GR_SUPPORT_GLDESKTOP |
| // ES doesn't support toggling GL_MULTISAMPLE and doesn't have |
| // smooth lines. |
| if (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 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(); |
| |
| fHWDrawState.fFlagBits = fCurrDrawState.fFlagBits; |
| } |
| |
| void GrGpuGL::notifyVertexBufferBind(const GrGLVertexBuffer* buffer) { |
| 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; |
| } |
| } |
| |
| 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 the bound FBO is destroyed we can't rely on the implicit bind to 0 |
| // a) we want the default RT which may not be FBO 0 |
| // b) we set more state than just FBO based on the RT |
| // So trash the HW state to force an RT flush next time |
| if (fCurrDrawState.fRenderTarget == renderTarget) { |
| fCurrDrawState.fRenderTarget = fDefaultRenderTarget; |
| } |
| if (fHWDrawState.fRenderTarget == renderTarget) { |
| fHWDrawState.fRenderTarget = NULL; |
| } |
| if (fClipState.fStencilClipTarget == renderTarget) { |
| fClipState.fStencilClipTarget = 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; |
| } |
| } |
| } |
| |
| void GrGpuGL::notifyTextureRemoveRenderTarget(GrGLTexture* texture) { |
| GrAssert(NULL != texture->asRenderTarget()); |
| |
| // if there is a pending resolve, perform it. |
| resolveTextureRenderTarget(texture); |
| } |
| |
| 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; |
| *internalFormat = GL_RGBA; |
| *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 GrGLCheckErr(const char* location, const char* call) { |
| uint32_t err = glGetError(); |
| if (GL_NO_ERROR != err) { |
| GrPrintf("---- glGetError %x", err); |
| if (NULL != location) { |
| GrPrintf(" at\n\t%s", location); |
| } |
| if (NULL != call) { |
| GrPrintf("\n\t\t%s", call); |
| } |
| GrPrintf("\n"); |
| } |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| typedef void (*glProc)(void); |
| |
| void get_gl_proc(const char procName[], glProc *address) { |
| #if GR_WIN32_BUILD |
| *address = (glProc)wglGetProcAddress(procName); |
| GrAssert(NULL != *address); |
| #elif GR_MAC_BUILD || GR_IOS_BUILD |
| GrAssert(!"Extensions don't need to be initialized!"); |
| #elif GR_ANDROID_BUILD |
| *address = eglGetProcAddress(procName); |
| GrAssert(NULL != *address); |
| #elif GR_LINUX_BUILD |
| // GR_STATIC_ASSERT(!"Add environment-dependent implementation here"); |
| //*address = glXGetProcAddressARB(procName); |
| *address = NULL;//eglGetProcAddress(procName); |
| #elif GR_QNX_BUILD |
| *address = eglGetProcAddress(procName); |
| GrAssert(NULL != *address); |
| #else |
| // hopefully we're on a system with EGL |
| *address = eglGetProcAddress(procName); |
| GrAssert(NULL != *address); |
| #endif |
| } |
| |
| #define GET_PROC(EXT_STRUCT, PROC_NAME, EXT_TAG) \ |
| get_gl_proc("gl" #PROC_NAME #EXT_TAG, (glProc*)&EXT_STRUCT-> PROC_NAME); |
| |
| extern void GrGLInitExtensions(GrGLExts* exts) { |
| exts->GenFramebuffers = NULL; |
| exts->BindFramebuffer = NULL; |
| exts->FramebufferTexture2D = NULL; |
| exts->CheckFramebufferStatus = NULL; |
| exts->DeleteFramebuffers = NULL; |
| exts->RenderbufferStorage = NULL; |
| exts->GenRenderbuffers = NULL; |
| exts->DeleteRenderbuffers = NULL; |
| exts->FramebufferRenderbuffer = NULL; |
| exts->BindRenderbuffer = NULL; |
| exts->RenderbufferStorageMultisample = NULL; |
| exts->BlitFramebuffer = NULL; |
| exts->ResolveMultisampleFramebuffer = NULL; |
| exts->FramebufferTexture2DMultisample = NULL; |
| exts->MapBuffer = NULL; |
| exts->UnmapBuffer = NULL; |
| |
| #if GR_MAC_BUILD |
| exts->GenFramebuffers = glGenFramebuffers; |
| exts->BindFramebuffer = glBindFramebuffer; |
| exts->FramebufferTexture2D = glFramebufferTexture2D; |
| exts->CheckFramebufferStatus = glCheckFramebufferStatus; |
| exts->DeleteFramebuffers = glDeleteFramebuffers; |
| exts->RenderbufferStorage = glRenderbufferStorage; |
| exts->GenRenderbuffers = glGenRenderbuffers; |
| exts->DeleteRenderbuffers = glDeleteRenderbuffers; |
| exts->FramebufferRenderbuffer = glFramebufferRenderbuffer; |
| exts->BindRenderbuffer = glBindRenderbuffer; |
| exts->RenderbufferStorageMultisample = glRenderbufferStorageMultisample; |
| exts->BlitFramebuffer = glBlitFramebuffer; |
| exts->MapBuffer = glMapBuffer; |
| exts->UnmapBuffer = glUnmapBuffer; |
| #elif GR_IOS_BUILD |
| exts->GenFramebuffers = glGenFramebuffers; |
| exts->BindFramebuffer = glBindFramebuffer; |
| exts->FramebufferTexture2D = glFramebufferTexture2D; |
| exts->CheckFramebufferStatus = glCheckFramebufferStatus; |
| exts->DeleteFramebuffers = glDeleteFramebuffers; |
| exts->RenderbufferStorage = glRenderbufferStorage; |
| exts->GenRenderbuffers = glGenRenderbuffers; |
| exts->DeleteRenderbuffers = glDeleteRenderbuffers; |
| exts->FramebufferRenderbuffer = glFramebufferRenderbuffer; |
| exts->BindRenderbuffer = glBindRenderbuffer; |
| exts->RenderbufferStorageMultisample = glRenderbufferStorageMultisampleAPPLE; |
| exts->ResolveMultisampleFramebuffer = glResolveMultisampleFramebufferAPPLE; |
| exts->MapBuffer = glMapBufferOES; |
| exts->UnmapBuffer = glUnmapBufferOES; |
| #else |
| GLint major, minor; |
| gl_version(&major, &minor); |
| #if GR_SUPPORT_GLDESKTOP |
| if (major >= 3) {// FBO, FBOMS, and FBOBLIT part of 3.0 |
| exts->GenFramebuffers = glGenFramebuffers; |
| exts->BindFramebuffer = glBindFramebuffer; |
| exts->FramebufferTexture2D = glFramebufferTexture2D; |
| exts->CheckFramebufferStatus = glCheckFramebufferStatus; |
| exts->DeleteFramebuffers = glDeleteFramebuffers; |
| exts->RenderbufferStorage = glRenderbufferStorage; |
| exts->GenRenderbuffers = glGenRenderbuffers; |
| exts->DeleteRenderbuffers = glDeleteRenderbuffers; |
| exts->FramebufferRenderbuffer = glFramebufferRenderbuffer; |
| exts->BindRenderbuffer = glBindRenderbuffer; |
| exts->RenderbufferStorageMultisample = glRenderbufferStorageMultisample; |
| exts->BlitFramebuffer = glBlitFramebuffer; |
| } else if (has_gl_extension("GL_ARB_framebuffer_object")) { |
| GET_PROC(exts, GenFramebuffers, ARB); |
| GET_PROC(exts, BindFramebuffer, ARB); |
| GET_PROC(exts, FramebufferTexture2D, ARB); |
| GET_PROC(exts, CheckFramebufferStatus, ARB); |
| GET_PROC(exts, DeleteFramebuffers, ARB); |
| GET_PROC(exts, RenderbufferStorage, ARB); |
| GET_PROC(exts, GenRenderbuffers, ARB); |
| GET_PROC(exts, DeleteRenderbuffers, ARB); |
| GET_PROC(exts, FramebufferRenderbuffer, ARB); |
| GET_PROC(exts, BindRenderbuffer, ARB); |
| GET_PROC(exts, RenderbufferStorageMultisample, ARB); |
| GET_PROC(exts, BlitFramebuffer, ARB); |
| } else { |
| // we require some form of FBO |
| GrAssert(has_gl_extension("GL_EXT_framebuffer_object")); |
| GET_PROC(exts, GenFramebuffers, EXT); |
| GET_PROC(exts, BindFramebuffer, EXT); |
| GET_PROC(exts, FramebufferTexture2D, EXT); |
| GET_PROC(exts, CheckFramebufferStatus, EXT); |
| GET_PROC(exts, DeleteFramebuffers, EXT); |
| GET_PROC(exts, RenderbufferStorage, EXT); |
| GET_PROC(exts, GenRenderbuffers, EXT); |
| GET_PROC(exts, DeleteRenderbuffers, EXT); |
| GET_PROC(exts, FramebufferRenderbuffer, EXT); |
| GET_PROC(exts, BindRenderbuffer, EXT); |
| if (has_gl_extension("GL_EXT_framebuffer_multisample")) { |
| GET_PROC(exts, RenderbufferStorageMultisample, EXT); |
| } |
| if (has_gl_extension("GL_EXT_framebuffer_blit")) { |
| GET_PROC(exts, BlitFramebuffer, EXT); |
| } |
| } |
| // we assume we have at least GL 1.5 or higher (VBOs introduced in 1.5) |
| exts->MapBuffer = glMapBuffer; |
| exts->UnmapBuffer = glUnmapBuffer; |
| #else // !GR_SUPPORT_GLDESKTOP |
| if (major >= 2) {// ES 2.0 supports FBO |
| exts->GenFramebuffers = glGenFramebuffers; |
| exts->BindFramebuffer = glBindFramebuffer; |
| exts->FramebufferTexture2D = glFramebufferTexture2D; |
| exts->CheckFramebufferStatus = glCheckFramebufferStatus; |
| exts->DeleteFramebuffers = glDeleteFramebuffers; |
| exts->RenderbufferStorage = glRenderbufferStorage; |
| exts->GenRenderbuffers = glGenRenderbuffers; |
| exts->DeleteRenderbuffers = glDeleteRenderbuffers; |
| exts->FramebufferRenderbuffer = glFramebufferRenderbuffer; |
| exts->BindRenderbuffer = glBindRenderbuffer; |
| } else { |
| // we require some form of FBO |
| GrAssert(has_gl_extension("GL_OES_framebuffer_object")); |
| |
| GET_PROC(exts, GenFramebuffers, OES); |
| GET_PROC(exts, BindFramebuffer, OES); |
| GET_PROC(exts, FramebufferTexture2D, OES); |
| GET_PROC(exts, CheckFramebufferStatus, OES); |
| GET_PROC(exts, DeleteFramebuffers, OES); |
| GET_PROC(exts, RenderbufferStorage, OES); |
| GET_PROC(exts, GenRenderbuffers, OES); |
| GET_PROC(exts, DeleteRenderbuffers, OES); |
| GET_PROC(exts, FramebufferRenderbuffer, OES); |
| GET_PROC(exts, BindRenderbuffer, OES); |
| } |
| if (has_gl_extension("GL_APPLE_framebuffer_multisample")) { |
| GET_PROC(exts, ResolveMultisampleFramebuffer, APPLE); |
| } |
| if (has_gl_extension("GL_IMG_multisampled_render_to_texture")) { |
| GET_PROC(exts, FramebufferTexture2DMultisample, IMG); |
| } |
| if (has_gl_extension("GL_OES_mapbuffer")) { |
| GET_PROC(exts, MapBuffer, OES); |
| GET_PROC(exts, UnmapBuffer, OES); |
| } |
| #endif // !GR_SUPPORT_GLDESKTOP |
| #endif // BUILD |
| } |
| |
| bool gPrintGL = true; |
| |