radeonsi/nir: fix number of used samplers

Commit f3e978db incorrectly assumed the maximum number of
samplers was equal to the max number of defined samplers
e.g. where bindings skip slots.

This fixes an assert in si_nir_load_sampler_desc() for an
enemy territory quake wars shader. And fixes potential bugs with
incorrect bounds limiting in the same code for production builds
of mesa.

Fixes: f3e978db ("radeonsi/nir: Remove uniform variable scanning")
Reviewed-by: Connor Abbott <cwabbott0@gmail.com>

diff --git a/src/gallium/drivers/radeonsi/si_shader_nir.c b/src/gallium/drivers/radeonsi/si_shader_nir.c
index 4970b01fd733caeeff1a2cb1b5fc078d533ed238..85cf53848e66cd5ba807445a9c7a8df5bbd4f408 100644 (file)
--- a/src/gallium/drivers/radeonsi/si_shader_nir.c
+++ b/src/gallium/drivers/radeonsi/si_shader_nir.c
@@ -783,7 +783,7 @@ void si_nir_scan_shader(const struct nir_shader *nir,
        if (nir->num_uniforms > 0)
                info->const_buffers_declared |= 1;
        info->images_declared = u_bit_consecutive(0, nir->info.num_images);
-       info->samplers_declared = u_bit_consecutive(0, nir->info.num_textures);
+       info->samplers_declared = nir->info.textures_used;
 
        info->num_written_clipdistance = nir->info.clip_distance_array_size;
        info->num_written_culldistance = nir->info.cull_distance_array_size;