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authorBrian <brianp@vmware.com>2009-02-11 21:44:38 -0700
committerBrian <brianp@vmware.com>2009-02-11 21:44:38 -0700
commit460b62336d83379a98948168a4bbe177fc6df835 (patch)
treecd196603a90d671a3a77d3648eb71f31dcd18c37 /src/gallium/drivers/softpipe
parent253d2d1676e07ddfc566f3761e409f9cabde1937 (diff)
softpipe: updated comments
Diffstat (limited to 'src/gallium/drivers/softpipe')
-rw-r--r--src/gallium/drivers/softpipe/sp_quad.h26
1 files changed, 19 insertions, 7 deletions
diff --git a/src/gallium/drivers/softpipe/sp_quad.h b/src/gallium/drivers/softpipe/sp_quad.h
index 0ef425a310..bd6c6cb912 100644
--- a/src/gallium/drivers/softpipe/sp_quad.h
+++ b/src/gallium/drivers/softpipe/sp_quad.h
@@ -34,6 +34,7 @@
#include "pipe/p_state.h"
#include "tgsi/tgsi_exec.h"
+
#define QUAD_PRIM_POINT 1
#define QUAD_PRIM_LINE 2
#define QUAD_PRIM_TRI 3
@@ -56,23 +57,29 @@
/**
- * Encodes everything we need to know about a 2x2 pixel block. Uses
- * "Channel-Serial" or "SoA" layout.
+ * Quad stage inputs (pos, coverage, front/back face, etc)
*/
struct quad_header_input
{
- int x0;
- int y0;
- float coverage[QUAD_SIZE]; /** fragment coverage for antialiasing */
- unsigned facing:1; /**< Front (0) or back (1) facing? */
- unsigned prim:2; /**< QUAD_PRIM_POINT, LINE, TRI */
+ int x0, y0; /**< quad window pos, always even */
+ float coverage[QUAD_SIZE]; /**< fragment coverage for antialiasing */
+ unsigned facing:1; /**< Front (0) or back (1) facing? */
+ unsigned prim:2; /**< QUAD_PRIM_POINT, LINE, TRI */
};
+
+/**
+ * Quad stage inputs/outputs.
+ */
struct quad_header_inout
{
unsigned mask:4;
};
+
+/**
+ * Quad stage outputs (color & depth).
+ */
struct quad_header_output
{
/** colors in SOA format (rrrr, gggg, bbbb, aaaa) */
@@ -80,6 +87,11 @@ struct quad_header_output
float depth[QUAD_SIZE];
};
+
+/**
+ * Encodes everything we need to know about a 2x2 pixel block. Uses
+ * "Channel-Serial" or "SoA" layout.
+ */
struct quad_header {
struct quad_header_input input;
struct quad_header_inout inout;