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authorSamuel Iglesias Gonsálvez <[email protected]>2016-01-26 12:47:26 +0100
committerSamuel Iglesias Gonsálvez <[email protected]>2016-01-28 11:35:03 +0100
commitf9c43dd22f92cd631f7feffb362a4cd3dad06c87 (patch)
tree1298c0ab2cfaad54d43f1a02a6cc2dc864ec56af /src
parent3fba517bdd03551f7c7ff21dfe1896c677cbccda (diff)
glsl: double-precision values don't support interpolation
ARB_gpu_shader_fp64 spec says: "This extension does not support interpolation of double-precision values; doubles used as fragment shader inputs must be qualified as "flat"." Fixes the regressions added by commit 781d278: arb_gpu_shader_fp64-double-gettransformfeedbackvarying arb_gpu_shader_fp64-tf-interleaved arb_gpu_shader_fp64-tf-interleaved-aligned arb_gpu_shader_fp64-tf-separate Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=93878 Signed-off-by: Samuel Iglesias Gonsálvez <[email protected]> Reviewed-by: Timothy Arceri <[email protected]> Reviewed-by: Tapani Pälli <[email protected]>
Diffstat (limited to 'src')
-rw-r--r--src/compiler/glsl/link_varyings.cpp9
1 files changed, 7 insertions, 2 deletions
diff --git a/src/compiler/glsl/link_varyings.cpp b/src/compiler/glsl/link_varyings.cpp
index 264b69ca619..a4c730ffdcf 100644
--- a/src/compiler/glsl/link_varyings.cpp
+++ b/src/compiler/glsl/link_varyings.cpp
@@ -967,11 +967,16 @@ varying_matches::record(ir_variable *producer_var, ir_variable *consumer_var)
return;
}
- if ((consumer_var == NULL && producer_var->type->contains_integer()) ||
+ bool needs_flat_qualifier = consumer_var == NULL &&
+ (producer_var->type->contains_integer() ||
+ producer_var->type->contains_double());
+
+ if (needs_flat_qualifier ||
(consumer_stage != -1 && consumer_stage != MESA_SHADER_FRAGMENT)) {
/* Since this varying is not being consumed by the fragment shader, its
* interpolation type varying cannot possibly affect rendering.
- * Also, this variable is non-flat and is (or contains) an integer.
+ * Also, this variable is non-flat and is (or contains) an integer
+ * or a double.
* If the consumer stage is unknown, don't modify the interpolation
* type as it could affect rendering later with separate shaders.
*