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st/glsl_to_nir: fix next_stage gathering

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ffs() just returns the bit that is set, we need to know what
stage that bit represents so use u_bit_scan() instead.

Fixes: 2ca5d9548f ("st/glsl_to_nir: gather next_stage in shader_info")
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
This commit is contained in:
Timothy Arceri 2018-10-20 15:02:59 +11:00
parent 9ec4a5ef29
commit 31596836fc
1 changed files with 1 additions and 1 deletions
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2
src/mesa/state_tracker/st_glsl_to_nir.cpp
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@ -373,7 +373,7 @@ st_glsl_to_nir(struct st_context *st, struct gl_program *prog,
~prev_stages & shader_program->data->linked_stages;
nir->info.next_stage = stages_mask ?
(gl_shader_stage) ffs(stages_mask) : MESA_SHADER_FRAGMENT;
(gl_shader_stage) u_bit_scan(&stages_mask) : MESA_SHADER_FRAGMENT;
} else {
nir->info.next_stage = MESA_SHADER_FRAGMENT;
}