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authorLuca Barbieri <[email protected]>2010-01-21 05:36:14 +0100
committerLuca Barbieri <[email protected]>2010-01-29 14:13:14 +0100
commit73317139a4f78126af0dc4ddaef8206352740727 (patch)
tree0775bf5e5e8228b5ae276d4b3ff61afe7b39df0a /src/gallium/auxiliary/tgsi
parent3cea5525d0b59c7dadb4be634cc244948cd634e6 (diff)
tgsi: add properties for fragment coord conventions (v3)
Changes in v3: - Documented the new properties - Added comments for property values - Rebased to current master Changes in v2: - Caps are added in a separate, subsequent patch This adds two TGSI fragment program properties that indicate the fragment coord conventions. The properties behave as described in the extension spec for GL_ARB_fragment_coord_conventions, but the default origin in upper left instead of lower left as in OpenGL. The syntax is: PROPERTY FS_COORD_ORIGIN [UPPER_LEFT|LOWER_LEFT] PROPERTY FS_COORD_PIXEL_CENTER [HALF_INTEGER|INTEGER] The names have been chosen for consistency with the GS properties and the OpenGL extension spec. The defaults are of course the previously assumed conventions: UPPER_LEFT and HALF_INTEGER.
Diffstat (limited to 'src/gallium/auxiliary/tgsi')
-rw-r--r--src/gallium/auxiliary/tgsi/tgsi_dump.c22
-rw-r--r--src/gallium/auxiliary/tgsi/tgsi_text.c63
-rw-r--r--src/gallium/auxiliary/tgsi/tgsi_ureg.c32
-rw-r--r--src/gallium/auxiliary/tgsi/tgsi_ureg.h7
4 files changed, 122 insertions, 2 deletions
diff --git a/src/gallium/auxiliary/tgsi/tgsi_dump.c b/src/gallium/auxiliary/tgsi/tgsi_dump.c
index 5472466eb69..dd365558755 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_dump.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_dump.c
@@ -159,7 +159,9 @@ static const char *property_names[] =
{
"GS_INPUT_PRIMITIVE",
"GS_OUTPUT_PRIMITIVE",
- "GS_MAX_OUTPUT_VERTICES"
+ "GS_MAX_OUTPUT_VERTICES",
+ "FS_COORD_ORIGIN",
+ "FS_COORD_PIXEL_CENTER"
};
static const char *primitive_names[] =
@@ -176,6 +178,18 @@ static const char *primitive_names[] =
"POLYGON"
};
+static const char *fs_coord_origin_names[] =
+{
+ "UPPER_LEFT",
+ "LOWER_LEFT"
+};
+
+static const char *fs_coord_pixel_center_names[] =
+{
+ "HALF_INTEGER",
+ "INTEGER"
+};
+
static void
_dump_register_dst(
@@ -366,6 +380,12 @@ iter_property(
case TGSI_PROPERTY_GS_OUTPUT_PRIM:
ENM(prop->u[i].Data, primitive_names);
break;
+ case TGSI_PROPERTY_FS_COORD_ORIGIN:
+ ENM(prop->u[i].Data, fs_coord_origin_names);
+ break;
+ case TGSI_PROPERTY_FS_COORD_PIXEL_CENTER:
+ ENM(prop->u[i].Data, fs_coord_pixel_center_names);
+ break;
default:
SID( prop->u[i].Data );
break;
diff --git a/src/gallium/auxiliary/tgsi/tgsi_text.c b/src/gallium/auxiliary/tgsi/tgsi_text.c
index f74b56bfb5f..96be353e264 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_text.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_text.c
@@ -1129,7 +1129,9 @@ static const char *property_names[] =
{
"GS_INPUT_PRIMITIVE",
"GS_OUTPUT_PRIMITIVE",
- "GS_MAX_OUTPUT_VERTICES"
+ "GS_MAX_OUTPUT_VERTICES",
+ "FS_COORD_ORIGIN",
+ "FS_COORD_PIXEL_CENTER"
};
static const char *primitive_names[] =
@@ -1146,6 +1148,19 @@ static const char *primitive_names[] =
"POLYGON"
};
+static const char *fs_coord_origin_names[] =
+{
+ "UPPER_LEFT",
+ "LOWER_LEFT"
+};
+
+static const char *fs_coord_pixel_center_names[] =
+{
+ "HALF_INTEGER",
+ "INTEGER"
+};
+
+
static boolean
parse_primitive( const char **pcur, uint *primitive )
{
@@ -1163,6 +1178,40 @@ parse_primitive( const char **pcur, uint *primitive )
return FALSE;
}
+static boolean
+parse_fs_coord_origin( const char **pcur, uint *fs_coord_origin )
+{
+ uint i;
+
+ for (i = 0; i < sizeof(fs_coord_origin_names) / sizeof(fs_coord_origin_names[0]); i++) {
+ const char *cur = *pcur;
+
+ if (str_match_no_case( &cur, fs_coord_origin_names[i])) {
+ *fs_coord_origin = i;
+ *pcur = cur;
+ return TRUE;
+ }
+ }
+ return FALSE;
+}
+
+static boolean
+parse_fs_coord_pixel_center( const char **pcur, uint *fs_coord_pixel_center )
+{
+ uint i;
+
+ for (i = 0; i < sizeof(fs_coord_pixel_center_names) / sizeof(fs_coord_pixel_center_names[0]); i++) {
+ const char *cur = *pcur;
+
+ if (str_match_no_case( &cur, fs_coord_pixel_center_names[i])) {
+ *fs_coord_pixel_center = i;
+ *pcur = cur;
+ return TRUE;
+ }
+ }
+ return FALSE;
+}
+
static boolean parse_property( struct translate_ctx *ctx )
{
@@ -1204,6 +1253,18 @@ static boolean parse_property( struct translate_ctx *ctx )
ctx->implied_array_size = u_vertices_per_prim(values[0]);
}
break;
+ case TGSI_PROPERTY_FS_COORD_ORIGIN:
+ if (!parse_fs_coord_origin(&ctx->cur, &values[0] )) {
+ report_error( ctx, "Unknown coord origin as property: must be UPPER_LEFT or LOWER_LEFT!" );
+ return FALSE;
+ }
+ break;
+ case TGSI_PROPERTY_FS_COORD_PIXEL_CENTER:
+ if (!parse_fs_coord_pixel_center(&ctx->cur, &values[0] )) {
+ report_error( ctx, "Unknown coord pixel center as property: must be HALF_INTEGER or INTEGER!" );
+ return FALSE;
+ }
+ break;
default:
if (!parse_uint(&ctx->cur, &values[0] )) {
report_error( ctx, "Expected unsigned integer as property!" );
diff --git a/src/gallium/auxiliary/tgsi/tgsi_ureg.c b/src/gallium/auxiliary/tgsi/tgsi_ureg.c
index f2610d07644..0ae46785bbe 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_ureg.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_ureg.c
@@ -142,6 +142,8 @@ struct ureg_program
unsigned property_gs_input_prim;
unsigned property_gs_output_prim;
unsigned property_gs_max_vertices;
+ unsigned char property_fs_coord_origin; /* = TGSI_FS_COORD_ORIGIN_* */
+ unsigned char property_fs_coord_pixel_center; /* = TGSI_FS_COORD_PIXEL_CENTER_* */
unsigned nr_addrs;
unsigned nr_preds;
@@ -265,6 +267,20 @@ ureg_property_gs_max_vertices(struct ureg_program *ureg,
ureg->property_gs_max_vertices = max_vertices;
}
+void
+ureg_property_fs_coord_origin(struct ureg_program *ureg,
+ unsigned fs_coord_origin)
+{
+ ureg->property_fs_coord_origin = fs_coord_origin;
+}
+
+void
+ureg_property_fs_coord_pixel_center(struct ureg_program *ureg,
+ unsigned fs_coord_pixel_center)
+{
+ ureg->property_fs_coord_pixel_center = fs_coord_pixel_center;
+}
+
struct ureg_src
@@ -1202,6 +1218,22 @@ static void emit_decls( struct ureg_program *ureg )
ureg->property_gs_max_vertices);
}
+ if (ureg->property_fs_coord_origin) {
+ assert(ureg->processor == TGSI_PROCESSOR_FRAGMENT);
+
+ emit_property(ureg,
+ TGSI_PROPERTY_FS_COORD_ORIGIN,
+ ureg->property_fs_coord_origin);
+ }
+
+ if (ureg->property_fs_coord_pixel_center) {
+ assert(ureg->processor == TGSI_PROCESSOR_FRAGMENT);
+
+ emit_property(ureg,
+ TGSI_PROPERTY_FS_COORD_PIXEL_CENTER,
+ ureg->property_fs_coord_pixel_center);
+ }
+
if (ureg->processor == TGSI_PROCESSOR_VERTEX) {
for (i = 0; i < UREG_MAX_INPUT; i++) {
if (ureg->vs_inputs[i/32] & (1 << (i%32))) {
diff --git a/src/gallium/auxiliary/tgsi/tgsi_ureg.h b/src/gallium/auxiliary/tgsi/tgsi_ureg.h
index 2ac00deca17..e25f35c6dc3 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_ureg.h
+++ b/src/gallium/auxiliary/tgsi/tgsi_ureg.h
@@ -136,6 +136,13 @@ void
ureg_property_gs_max_vertices(struct ureg_program *ureg,
unsigned max_vertices);
+void
+ureg_property_fs_coord_origin(struct ureg_program *ureg,
+ unsigned fs_coord_origin);
+
+void
+ureg_property_fs_coord_pixel_center(struct ureg_program *ureg,
+ unsigned fs_coord_pixel_center);
/***********************************************************************
* Build shader declarations: