Mesa (master): gallium: add GS_INVOCATIONS property
Ilia Mirkin
imirkin at kemper.freedesktop.org
Sat Apr 26 16:03:47 UTC 2014
Module: Mesa
Branch: master
Commit: 4be146b1088c33ca377a2cf8a01e73c7f66732f7
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=4be146b1088c33ca377a2cf8a01e73c7f66732f7
Author: Ilia Mirkin <imirkin at alum.mit.edu>
Date: Wed Apr 23 23:14:55 2014 -0400
gallium: add GS_INVOCATIONS property
Signed-off-by: Ilia Mirkin <imirkin at alum.mit.edu>
Reviewed-by: Marek Olšák <marek.olsak at amd.com>
---
src/gallium/auxiliary/tgsi/tgsi_ureg.c | 9 +++++++++
src/gallium/docs/source/tgsi.rst | 8 ++++++++
src/gallium/include/pipe/p_shader_tokens.h | 3 ++-
3 files changed, 19 insertions(+), 1 deletion(-)
diff --git a/src/gallium/auxiliary/tgsi/tgsi_ureg.c b/src/gallium/auxiliary/tgsi/tgsi_ureg.c
index 38cce58..2bf93ee 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_ureg.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_ureg.c
@@ -1468,6 +1468,14 @@ static void emit_decls( struct ureg_program *ureg )
ureg->property_gs_max_vertices);
}
+ if (ureg->property_gs_invocations != ~0) {
+ assert(ureg->processor == TGSI_PROCESSOR_GEOMETRY);
+
+ emit_property(ureg,
+ TGSI_PROPERTY_GS_INVOCATIONS,
+ ureg->property_gs_invocations);
+ }
+
if (ureg->property_fs_coord_origin) {
assert(ureg->processor == TGSI_PROCESSOR_FRAGMENT);
@@ -1757,6 +1765,7 @@ struct ureg_program *ureg_create( unsigned processor )
ureg->property_gs_input_prim = ~0;
ureg->property_gs_output_prim = ~0;
ureg->property_gs_max_vertices = ~0;
+ ureg->property_gs_invocations = ~0;
ureg->free_temps = util_bitmask_create();
if (ureg->free_temps == NULL)
diff --git a/src/gallium/docs/source/tgsi.rst b/src/gallium/docs/source/tgsi.rst
index 170f83e..0ea0759 100644
--- a/src/gallium/docs/source/tgsi.rst
+++ b/src/gallium/docs/source/tgsi.rst
@@ -2765,6 +2765,14 @@ distance outputs.
This is useful for APIs that don't have UCPs and where clip distances written
by a shader cannot be disabled.
+GS_INVOCATIONS
+""""""""""""""
+
+Specifies the number of times a geometry shader should be executed for each
+input primitive. Each invocation will have a different
+TGSI_SEMANTIC_INVOCATIONID system value set. If not specified, assumed to
+be 1.
+
Texture Sampling and Texture Formats
------------------------------------
diff --git a/src/gallium/include/pipe/p_shader_tokens.h b/src/gallium/include/pipe/p_shader_tokens.h
index 1903d53..b537166 100644
--- a/src/gallium/include/pipe/p_shader_tokens.h
+++ b/src/gallium/include/pipe/p_shader_tokens.h
@@ -236,7 +236,8 @@ union tgsi_immediate_data
#define TGSI_PROPERTY_FS_COLOR0_WRITES_ALL_CBUFS 5
#define TGSI_PROPERTY_FS_DEPTH_LAYOUT 6
#define TGSI_PROPERTY_VS_PROHIBIT_UCPS 7
-#define TGSI_PROPERTY_COUNT 8
+#define TGSI_PROPERTY_GS_INVOCATIONS 8
+#define TGSI_PROPERTY_COUNT 9
struct tgsi_property {
unsigned Type : 4; /**< TGSI_TOKEN_TYPE_PROPERTY */
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