diff options
| -rw-r--r-- | src/gpu/gl/GrGLGpu.cpp | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/src/gpu/gl/GrGLGpu.cpp b/src/gpu/gl/GrGLGpu.cpp index 42291ed571..3e2c1b48b8 100644 --- a/src/gpu/gl/GrGLGpu.cpp +++ b/src/gpu/gl/GrGLGpu.cpp @@ -2061,6 +2061,27 @@ bool GrGLGpu::onReadPixels(GrSurface* surface, int left, int top, int width, int auto dstAsConfig = GrColorTypeToPixelConfig(dstColorType, GrSRGBEncoded::kNo); if (!this->readPixelsSupported(surface, dstAsConfig)) { + // If reading in half float format is not supported, then read in a temporary float buffer + // and convert to half float. + if (kRGBA_half_GrPixelConfig == dstAsConfig && + this->readPixelsSupported(surface, kRGBA_float_GrPixelConfig)) { + std::unique_ptr<float[]> temp(new float[width * height * 4]); + if (this->onReadPixels(surface, left, top, width, height, GrColorType::kRGBA_F32, + temp.get(), width * sizeof(float) * 4)) { + uint8_t* dst = reinterpret_cast<uint8_t*>(buffer); + float* src = temp.get(); + for (int j = 0; j < height; ++j) { + SkHalf* dstRow = reinterpret_cast<SkHalf*>(dst); + for (int i = 0; i < width; ++i) { + for (int color = 0; color < 4; color++) { + *dstRow++ = SkFloatToHalf(*src++); + } + } + dst += rowBytes; + } + return true; + } + } return false; } |