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authorFrancisco Jerez <[email protected]>2015-02-19 14:49:10 +0200
committerFrancisco Jerez <[email protected]>2015-05-04 17:44:17 +0300
commite1ae0c3bc37be7b1de21ee248d674671d01da8e6 (patch)
treebad422f34819ffac2e51687ee956c7fbb5f8e827 /src/mesa/main/tests
parentb234537cc3e513ded9b5385d876e4c531f72af94 (diff)
i965: Fix variable indexing of sampler arrays under non-uniform control flow.
ARB_gpu_shader5 requires sampler array indexing expressions to be dynamically uniform, this however doesn't have any implications on the control flow that leads to the evaluation of that expression being uniform. Use emit_uniformize() to obtain an arbitrary live value from the binding table index calculation instead of assuming that the first channel is always live. Fixes the following Piglit test cases: arb_gpu_shader5/execution/sampler_array_indexing/fs-nonuniform-control-flow.shader_test arb_gpu_shader5/execution/sampler_array_indexing/vs-nonuniform-control-flow.shader_test part of the series: http://lists.freedesktop.org/archives/piglit/2015-February/014615.html Reviewed-by: Matt Turner <[email protected]>
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