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softpipe: updated comments

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This commit is contained in:
Brian 2009-02-11 21:44:38 -07:00
parent 253d2d1676
commit 460b62336d
1 changed files with 19 additions and 7 deletions
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26
src/gallium/drivers/softpipe/sp_quad.h
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@ -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;