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mtypes.h: Add new gl_varying_slot enum, and bitfield defines.

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Future patches will make use of the enum.  It will eventually take the
place of the existing enums gl_vert_result, gl_geom_attrib,
gl_geom_result, and gl_frag_attrib, all of which represent essentially
the same information but using inconsistent values.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Anholt <eric@anholt.net>
Tested-by: Brian Paul <brianp@vmware.com>
This commit is contained in:
Paul Berry 2013-02-22 11:32:54 -08:00
parent 6bec74bfd9
commit 8a076c5f05
1 changed files with 70 additions and 0 deletions
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70
src/mesa/main/mtypes.h
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@ -208,6 +208,76 @@ typedef enum
/*@}*/
/**
* Indexes for vertex shader outputs, geometry shader inputs/outputs, and
* fragment shader inputs.
*
* Note that some of these values are not available to all pipeline stages.
*/
typedef enum
{
VARYING_SLOT_POS,
VARYING_SLOT_COL0, /* COL0 and COL1 must be contiguous */
VARYING_SLOT_COL1,
VARYING_SLOT_FOGC,
VARYING_SLOT_TEX0, /* TEX0-TEX7 must be contiguous */
VARYING_SLOT_TEX1,
VARYING_SLOT_TEX2,
VARYING_SLOT_TEX3,
VARYING_SLOT_TEX4,
VARYING_SLOT_TEX5,
VARYING_SLOT_TEX6,
VARYING_SLOT_TEX7,
VARYING_SLOT_PSIZ, /* Does not appear in FS */
VARYING_SLOT_BFC0, /* Does not appear in FS */
VARYING_SLOT_BFC1, /* Does not appear in FS */
VARYING_SLOT_EDGE, /* Does not appear in FS */
VARYING_SLOT_CLIP_VERTEX, /* Does not appear in FS */
VARYING_SLOT_CLIP_DIST0,
VARYING_SLOT_CLIP_DIST1,
VARYING_SLOT_PRIMITIVE_ID, /* Does not appear in VS */
VARYING_SLOT_LAYER, /* Appears only as GS output */
VARYING_SLOT_FACE, /* FS only */
VARYING_SLOT_PNTC, /* FS only */
VARYING_SLOT_VAR0, /* First generic varying slot */
VARYING_SLOT_MAX = VARYING_SLOT_VAR0 + MAX_VARYING
} gl_varying_slot;
/**
* Bitflags for varying slots.
*/
/*@{*/
#define VARYING_BIT_POS BITFIELD64_BIT(VARYING_SLOT_POS)
#define VARYING_BIT_COL0 BITFIELD64_BIT(VARYING_SLOT_COL0)
#define VARYING_BIT_COL1 BITFIELD64_BIT(VARYING_SLOT_COL1)
#define VARYING_BIT_FOGC BITFIELD64_BIT(VARYING_SLOT_FOGC)
#define VARYING_BIT_TEX0 BITFIELD64_BIT(VARYING_SLOT_TEX0)
#define VARYING_BIT_TEX1 BITFIELD64_BIT(VARYING_SLOT_TEX1)
#define VARYING_BIT_TEX2 BITFIELD64_BIT(VARYING_SLOT_TEX2)
#define VARYING_BIT_TEX3 BITFIELD64_BIT(VARYING_SLOT_TEX3)
#define VARYING_BIT_TEX4 BITFIELD64_BIT(VARYING_SLOT_TEX4)
#define VARYING_BIT_TEX5 BITFIELD64_BIT(VARYING_SLOT_TEX5)
#define VARYING_BIT_TEX6 BITFIELD64_BIT(VARYING_SLOT_TEX6)
#define VARYING_BIT_TEX7 BITFIELD64_BIT(VARYING_SLOT_TEX7)
#define VARYING_BIT_TEX(U) BITFIELD64_BIT(VARYING_SLOT_TEX0 + (U))
#define VARYING_BITS_TEX_ANY BITFIELD64_RANGE(VARYING_SLOT_TEX0, \
MAX_TEXTURE_COORD_UNITS)
#define VARYING_BIT_PSIZ BITFIELD64_BIT(VARYING_SLOT_PSIZ)
#define VARYING_BIT_BFC0 BITFIELD64_BIT(VARYING_SLOT_BFC0)
#define VARYING_BIT_BFC1 BITFIELD64_BIT(VARYING_SLOT_BFC1)
#define VARYING_BIT_EDGE BITFIELD64_BIT(VARYING_SLOT_EDGE)
#define VARYING_BIT_CLIP_VERTEX BITFIELD64_BIT(VARYING_SLOT_CLIP_VERTEX)
#define VARYING_BIT_CLIP_DIST0 BITFIELD64_BIT(VARYING_SLOT_CLIP_DIST0)
#define VARYING_BIT_CLIP_DIST1 BITFIELD64_BIT(VARYING_SLOT_CLIP_DIST1)
#define VARYING_BIT_PRIMITIVE_ID BITFIELD64_BIT(VARYING_SLOT_PRIMITIVE_ID)
#define VARYING_BIT_LAYER BITFIELD64_BIT(VARYING_SLOT_LAYER)
#define VARYING_BIT_FACE BITFIELD64_BIT(VARYING_SLOT_FACE)
#define VARYING_BIT_PNTC BITFIELD64_BIT(VARYING_SLOT_PNTC)
#define VARYING_BIT_VAR(V) BITFIELD64_BIT(VARYING_SLOT_VAR0 + (V))
/*@}*/
/**
* Indexes for vertex program result attributes. Note that
* _mesa_vert_result_to_frag_attrib() and _mesa_frag_attrib_to_vert_result() make