Mesa (staging/19.1): glsl/nir: Avoid overflow when setting max_uniform_location
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Thu Sep 12 08:29:51 UTC 2019
Module: Mesa
Branch: staging/19.1
Commit: 83dadcfdc6f085999cdeab969fa33786042c5811
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=83dadcfdc6f085999cdeab969fa33786042c5811
Author: Caio Marcelo de Oliveira Filho <caio.oliveira at intel.com>
Date: Wed Aug 21 10:04:56 2019 -0700
glsl/nir: Avoid overflow when setting max_uniform_location
Don't use the UNMAPPED_UNIFORM_LOC (-1) to set the unsigned
max_uniform_location. Those unmapped uniforms don't have to be
accounted at this point.
Fixes: 7a9e5cdfbb9 ("nir/linker: Add gl_nir_link_uniforms()")
Reviewed-by: Alejandro Piñeiro <apinheiro at igalia.com>
(cherry picked from commit 4f33f96c4517f86f6f720f745cd49f8a0754393b)
---
src/compiler/glsl/gl_nir_link_uniforms.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/src/compiler/glsl/gl_nir_link_uniforms.c b/src/compiler/glsl/gl_nir_link_uniforms.c
index e4924df0d03..bc506bc3751 100644
--- a/src/compiler/glsl/gl_nir_link_uniforms.c
+++ b/src/compiler/glsl/gl_nir_link_uniforms.c
@@ -443,7 +443,8 @@ nir_link_uniform(struct gl_context *ctx,
state->num_shader_uniform_components += values;
state->num_values += values;
- if (state->max_uniform_location < uniform->remap_location + entries)
+ if (uniform->remap_location != UNMAPPED_UNIFORM_LOC &&
+ state->max_uniform_location < uniform->remap_location + entries)
state->max_uniform_location = uniform->remap_location + entries;
return MAX2(uniform->array_elements, 1);
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