![]() On Broadwell, we can simply state that it's W-tiled in SURFACE_STATE, and adjust the pitch. ![]() As explained in the commit message, "On earlier hardware, we had to implement math in the shader to translate Y-tiled or untiled coordinates to W-tiled coordinates (which is what BLORP does today in order to texture from stencil buffers). Unfortunately for Intel users right now, this extension is only hooked up for the upcoming Broadwell processors. As explained via the registry, the extension allows allows texturing of the stencil component of a packed depth stencil texture. The ARB_stencil_texturing extension is what's now supported by the latest Mesa 10.2-devel Git code for Mesa after previously only the API was in place without any Mesa GPU driver support. Intel's Mesa DRI driver on Linux has picked up support for another OpenGL 4 extension, but for now at least the hardware support is limited to the yet-to-be-released Broadwell.
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