diff options
Diffstat (limited to 'src/gpu/gl/GrGLCaps.cpp')
| -rw-r--r-- | src/gpu/gl/GrGLCaps.cpp | 29 |
1 files changed, 23 insertions, 6 deletions
diff --git a/src/gpu/gl/GrGLCaps.cpp b/src/gpu/gl/GrGLCaps.cpp index 3b90676be1..93a7e614fd 100644 --- a/src/gpu/gl/GrGLCaps.cpp +++ b/src/gpu/gl/GrGLCaps.cpp @@ -1958,6 +1958,8 @@ void GrGLCaps::initConfigTable(const GrContextOptions& contextOptions, for (int i = 0; i < kGrPixelConfigCnt; ++i) { if (ConfigInfo::kRenderableWithMSAA_Flag & fConfigTable[i].fFlags) { + // We assume that MSAA rendering is supported only if we support non-MSAA rendering. + SkASSERT(ConfigInfo::kRenderable_Flag & fConfigTable[i].fFlags); if ((kGL_GrGLStandard == ctxInfo.standard() && (ctxInfo.version() >= GR_GL_VER(4,2) || ctxInfo.hasExtension("GL_ARB_internalformat_query"))) || @@ -1970,10 +1972,15 @@ void GrGLCaps::initConfigTable(const GrContextOptions& contextOptions, int* temp = new int[count]; GR_GL_GetInternalformativ(gli, GR_GL_RENDERBUFFER, format, GR_GL_SAMPLES, count, temp); + // GL has a concept of MSAA rasterization with a single sample but we do not. + if (count && temp[count - 1] == 1) { + --count; + SkASSERT(!count || temp[count -1] > 1); + } fConfigTable[i].fColorSampleCounts.setCount(count+1); - // We initialize our supported values with 0 (no msaa) and reverse the order + // We initialize our supported values with 1 (no msaa) and reverse the order // returned by GL so that the array is ascending. - fConfigTable[i].fColorSampleCounts[0] = 0; + fConfigTable[i].fColorSampleCounts[0] = 1; for (int j = 0; j < count; ++j) { fConfigTable[i].fColorSampleCounts[j+1] = temp[count - j - 1]; } @@ -1982,14 +1989,16 @@ void GrGLCaps::initConfigTable(const GrContextOptions& contextOptions, } else { // Fake out the table using some semi-standard counts up to the max allowed sample // count. - int maxSampleCnt = 0; + int maxSampleCnt = 1; if (GrGLCaps::kES_IMG_MsToTexture_MSFBOType == fMSFBOType) { GR_GL_GetIntegerv(gli, GR_GL_MAX_SAMPLES_IMG, &maxSampleCnt); } else if (GrGLCaps::kNone_MSFBOType != fMSFBOType) { GR_GL_GetIntegerv(gli, GR_GL_MAX_SAMPLES, &maxSampleCnt); } + // Chrome has a mock GL implementation that returns 0. + maxSampleCnt = SkTMax(1, maxSampleCnt); - static constexpr int kDefaultSamples[] = {0, 1, 2, 4, 8}; + static constexpr int kDefaultSamples[] = {1, 2, 4, 8}; int count = SK_ARRAY_COUNT(kDefaultSamples); for (; count > 0; --count) { if (kDefaultSamples[count - 1] <= maxSampleCnt) { @@ -2000,6 +2009,9 @@ void GrGLCaps::initConfigTable(const GrContextOptions& contextOptions, fConfigTable[i].fColorSampleCounts.append(count, kDefaultSamples); } } + } else if (ConfigInfo::kRenderable_Flag & fConfigTable[i].fFlags) { + fConfigTable[i].fColorSampleCounts.setCount(1); + fConfigTable[i].fColorSampleCounts[0] = 1; } } @@ -2457,17 +2469,22 @@ void GrGLCaps::onApplyOptionsOverrides(const GrContextOptions& options) { } int GrGLCaps::getSampleCount(int requestedCount, GrPixelConfig config) const { + requestedCount = SkTMax(1, requestedCount); int count = fConfigTable[config].fColorSampleCounts.count(); - if (!count || !this->isConfigRenderable(config, true)) { + if (!count || !this->isConfigRenderable(config, requestedCount > 1)) { return 0; } + if (1 == requestedCount) { + return fConfigTable[config].fColorSampleCounts[0] == 1 ? 1 : 0; + } + for (int i = 0; i < count; ++i) { if (fConfigTable[config].fColorSampleCounts[i] >= requestedCount) { return fConfigTable[config].fColorSampleCounts[i]; } } - return fConfigTable[config].fColorSampleCounts[count-1]; + return 0; } bool validate_sized_format(GrGLenum format, SkColorType ct, GrPixelConfig* config, |