On 06/05/2012 01:12 PM, Ian Romanick wrote: > On 06/05/2012 12:55 AM, Zhao, Halley wrote: >> Thanks Paul, Thanks Ian as well for the comments on it. >> I will update internal_format to GL_YCBCR_MESA. >> (I didn't notice glext.h before, but gl2.h only) >> >> As to the error in intel_image_target_texture_2d(), it isn't caused by >> wrong internal format, but hw limitation since we don't support packed >> YUV as texture. > > Yes and no. The hardware natively supports the 422 subsampling, but > GEN4 and later do not support the color space conversion. For > GL_YCBCR_MESA textures extra instructions are added after the texture > lookup to perform the conversion.
But only in the old brw_wm_emit backend. The new brw_fs backend broke this, and nobody's bothered to fix it. _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev
