This isn't allowed by Vulkan, but might be useful someday for
SPIR-V in OpenGL (if that ever becomes a thing). It's easy enough
to hook up, and as precedent, we already do so for OriginLowerLeft.
Signed-off-by: Kenneth Graunke <kenn...@whitecape.org>
---
src/compiler/spirv/spirv_to_nir.c | 3 +++
src/compiler/spirv/vtn_private.h | 1 +
src/compiler/spirv/vtn_variables.c | 3 +++
3 files changed, 7 insertions(+)
Unnecessary patch. I wrote it, so I figured I'd send it.
I'm fine with dropping it if people prefer.
diff --git a/src/compiler/spirv/spirv_to_nir.c
b/src/compiler/spirv/spirv_to_nir.c
index c92dfca..2ed140e 100644
--- a/src/compiler/spirv/spirv_to_nir.c
+++ b/src/compiler/spirv/spirv_to_nir.c
@@ -2329,6 +2329,9 @@ vtn_handle_execution_mode(struct vtn_builder *b, struct
vtn_value *entry_point,
break;
case SpvExecutionModePixelCenterInteger:
+ b->pixel_center_integer = true;
+ break;
+
case SpvExecutionModeXfb:
assert(!"Unhandled execution mode");
break;
diff --git a/src/compiler/spirv/vtn_private.h b/src/compiler/spirv/vtn_private.h
index 3840d8c..3ecffad 100644
--- a/src/compiler/spirv/vtn_private.h
+++ b/src/compiler/spirv/vtn_private.h
@@ -378,6 +378,7 @@ struct vtn_builder {
const char *entry_point_name;
struct vtn_value *entry_point;
bool origin_upper_left;
+ bool pixel_center_integer;
struct vtn_function *func;
struct exec_list functions;
diff --git a/src/compiler/spirv/vtn_variables.c
b/src/compiler/spirv/vtn_variables.c
index bbe1166..0c7f0f7 100644
--- a/src/compiler/spirv/vtn_variables.c
+++ b/src/compiler/spirv/vtn_variables.c
@@ -1016,6 +1016,9 @@ var_decoration_cb(struct vtn_builder *b, struct vtn_value
*val, int member,
if (builtin == SpvBuiltInFragCoord || builtin ==
SpvBuiltInSamplePosition)
nir_var->data.origin_upper_left = b->origin_upper_left;
+
+ if (builtin == SpvBuiltInFragCoord)
+ nir_var->data.pixel_center_integer = b->pixel_center_integer;
break;
}
case SpvDecorationRowMajor:
--
2.8.2
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