Point size is a single component value and drivers might write the full vec4
potentially overwriting other values.
Signed-off-by: Karol Herbst <kher...@redhat.com>
---
src/mesa/program/prog_to_nir.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/src/mesa/program/prog_to_nir.c b/src/mesa/program/prog_to_nir.c
index cb1c19e9dfa..7d17e1da48a 100644
--- a/src/mesa/program/prog_to_nir.c
+++ b/src/mesa/program/prog_to_nir.c
@@ -868,7 +868,8 @@ ptn_add_output_stores(struct ptn_compile *c)
src = nir_channel(b, src, 2);
}
if (c->prog->Target == GL_VERTEX_PROGRAM_ARB &&
- var->data.location == VARYING_SLOT_FOGC) {
+ (var->data.location == VARYING_SLOT_FOGC ||
+ var->data.location == VARYING_SLOT_PSIZ)) {
/* result.fogcoord is a single component value */
src = nir_channel(b, src, 0);
}
@@ -956,7 +957,8 @@ setup_registers_and_variables(struct ptn_compile *c)
nir_variable *var = rzalloc(shader, nir_variable);
if ((c->prog->Target == GL_FRAGMENT_PROGRAM_ARB && i ==
FRAG_RESULT_DEPTH) ||
- (c->prog->Target == GL_VERTEX_PROGRAM_ARB && i == VARYING_SLOT_FOGC))
+ (c->prog->Target == GL_VERTEX_PROGRAM_ARB &&
+ (i == VARYING_SLOT_FOGC || i == VARYING_SLOT_PSIZ)))
var->type = glsl_float_type();
else
var->type = glsl_vec4_type();
--
2.20.1
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