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/**************************************************************************
*
* Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
* All Rights Reserved.
*
**************************************************************************/
#ifndef I915_PROGRAM_H
#define I915_PROGRAM_H
#include "i915_context.h"
#include "i915_reg.h"
/* Having zero and one in here makes the definition of swizzle a lot
* easier.
*/
#define UREG_TYPE_SHIFT 29
#define UREG_NR_SHIFT 24
#define UREG_CHANNEL_X_NEGATE_SHIFT 23
#define UREG_CHANNEL_X_SHIFT 20
#define UREG_CHANNEL_Y_NEGATE_SHIFT 19
#define UREG_CHANNEL_Y_SHIFT 16
#define UREG_CHANNEL_Z_NEGATE_SHIFT 15
#define UREG_CHANNEL_Z_SHIFT 12
#define UREG_CHANNEL_W_NEGATE_SHIFT 11
#define UREG_CHANNEL_W_SHIFT 8
#define UREG_CHANNEL_ZERO_NEGATE_MBZ 5
#define UREG_CHANNEL_ZERO_SHIFT 4
#define UREG_CHANNEL_ONE_NEGATE_MBZ 1
#define UREG_CHANNEL_ONE_SHIFT 0
#define UREG_BAD 0xffffffff /* not a valid ureg */
#define X SRC_X
#define Y SRC_Y
#define Z SRC_Z
#define W SRC_W
#define ZERO SRC_ZERO
#define ONE SRC_ONE
/* Construct a ureg:
*/
#define UREG( type, nr ) (((type)<< UREG_TYPE_SHIFT) | \
((nr) << UREG_NR_SHIFT) | \
(X << UREG_CHANNEL_X_SHIFT) | \
(Y << UREG_CHANNEL_Y_SHIFT) | \
(Z << UREG_CHANNEL_Z_SHIFT) | \
(W << UREG_CHANNEL_W_SHIFT) | \
(ZERO << UREG_CHANNEL_ZERO_SHIFT) | \
(ONE << UREG_CHANNEL_ONE_SHIFT))
#define GET_CHANNEL_SRC( reg, channel ) ((reg<<(channel*4)) & (0xf<<20))
#define CHANNEL_SRC( src, channel ) (src>>(channel*4))
#define GET_UREG_TYPE(reg) (((reg)>>UREG_TYPE_SHIFT)®_TYPE_MASK)
#define GET_UREG_NR(reg) (((reg)>>UREG_NR_SHIFT)®_NR_MASK)
#define UREG_XYZW_CHANNEL_MASK 0x00ffff00
/* One neat thing about the UREG representation:
*/
static __inline int swizzle( int reg, int x, int y, int z, int w )
{
return ((reg & ~UREG_XYZW_CHANNEL_MASK) |
CHANNEL_SRC( GET_CHANNEL_SRC( reg, x ), 0 ) |
CHANNEL_SRC( GET_CHANNEL_SRC( reg, y ), 1 ) |
CHANNEL_SRC( GET_CHANNEL_SRC( reg, z ), 2 ) |
CHANNEL_SRC( GET_CHANNEL_SRC( reg, w ), 3 ));
}
/* Another neat thing about the UREG representation:
*/
static __inline int negate( int reg, int x, int y, int z, int w )
{
return reg ^ (((x&1)<<UREG_CHANNEL_X_NEGATE_SHIFT)|
((y&1)<<UREG_CHANNEL_Y_NEGATE_SHIFT)|
((z&1)<<UREG_CHANNEL_Z_NEGATE_SHIFT)|
((w&1)<<UREG_CHANNEL_W_NEGATE_SHIFT));
}
extern GLuint i915_get_temp( struct i915_fragment_program *p );
extern GLuint i915_get_utemp( struct i915_fragment_program *p );
extern void i915_release_utemps( struct i915_fragment_program *p );
extern GLuint i915_emit_texld( struct i915_fragment_program *p,
GLuint dest,
GLuint destmask,
GLuint sampler,
GLuint coord,
GLuint op );
extern GLuint i915_emit_arith( struct i915_fragment_program *p,
GLuint op,
GLuint dest,
GLuint mask,
GLuint saturate,
GLuint src0,
GLuint src1,
GLuint src2 );
extern GLuint i915_emit_decl( struct i915_fragment_program *p,
GLuint type, GLuint nr, GLuint d0_flags );
extern GLuint i915_emit_const1f( struct i915_fragment_program *p,
GLfloat c0 );
extern GLuint i915_emit_const2f( struct i915_fragment_program *p,
GLfloat c0, GLfloat c1 );
extern GLuint i915_emit_const4fv( struct i915_fragment_program *p,
const GLfloat *c );
extern GLuint i915_emit_const4f( struct i915_fragment_program *p,
GLfloat c0, GLfloat c1,
GLfloat c2, GLfloat c3 );
extern GLuint i915_emit_param4fv( struct i915_fragment_program *p,
const GLfloat *values );
extern void i915_program_error( struct i915_fragment_program *p,
const GLubyte *msg );
extern void i915_init_program( i915ContextPtr i915,
struct i915_fragment_program *p );
extern void i915_upload_program( i915ContextPtr i915,
struct i915_fragment_program *p );
extern void i915_fini_program( struct i915_fragment_program *p );
#endif
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