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authorFrancisco Jerez <[email protected]>2016-11-01 11:56:13 -0700
committerFrancisco Jerez <[email protected]>2016-11-03 11:46:44 -0700
commitf3d387867f74ae758b41168f23992671f7dce254 (patch)
treed42cef516cad25f7d263ae35e94dd29ad4370ae3 /src/mesa/swrast
parentfaab6a0f18825bd1bd3a6f0cfc4e4e68e041b6e2 (diff)
nir: Flip gl_SamplePosition in nir_lower_wpos_ytransform().
Assuming the hardware is set up to use a screen coordinate system flipped vertically with respect to the GL's window coordinate system, the SYSTEM_VALUE_SAMPLE_POS vector will also be flipped vertically with respect to the value expected by the GL, so we need to give it the same treatment as gl_FragCoord. Fixes the following CTS tests on i965: ES31-CTS.functional.shaders.multisample_interpolation.interpolate_at_offset.at_sample_position.default_framebuffer ES31-CTS.functional.shaders.sample_variables.sample_pos.correctness.default_framebuffer when run with any multisample configuration, e.g. rgba8888d24s8ms4. Cc: <[email protected]> Reviewed-by: Kenneth Graunke <[email protected]> Reviewed-by: Anuj Phogat <[email protected]>
Diffstat (limited to 'src/mesa/swrast')
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