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/**************************************************************************
*
* Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
#ifndef I915_FPC_H
#define I915_FPC_H
#include "pipe/p_util.h"
#include "i915_context.h"
#include "i915_reg.h"
#define I915_PROGRAM_SIZE 192
#define MAX_VARYING 8
enum
{
FRAG_ATTRIB_WPOS = 0,
FRAG_ATTRIB_COL0 = 1,
FRAG_ATTRIB_COL1 = 2,
FRAG_ATTRIB_FOGC = 3,
FRAG_ATTRIB_TEX0 = 4,
FRAG_ATTRIB_TEX1 = 5,
FRAG_ATTRIB_TEX2 = 6,
FRAG_ATTRIB_TEX3 = 7,
FRAG_ATTRIB_TEX4 = 8,
FRAG_ATTRIB_TEX5 = 9,
FRAG_ATTRIB_TEX6 = 10,
FRAG_ATTRIB_TEX7 = 11,
FRAG_ATTRIB_VAR0 = 12, /**< shader varying */
FRAG_ATTRIB_MAX = (FRAG_ATTRIB_VAR0 + MAX_VARYING)
};
/**
* Bitflags for fragment program input attributes.
*/
/*@{*/
#define FRAG_BIT_WPOS (1 << FRAG_ATTRIB_WPOS)
#define FRAG_BIT_COL0 (1 << FRAG_ATTRIB_COL0)
#define FRAG_BIT_COL1 (1 << FRAG_ATTRIB_COL1)
#define FRAG_BIT_FOGC (1 << FRAG_ATTRIB_FOGC)
#define FRAG_BIT_TEX0 (1 << FRAG_ATTRIB_TEX0)
#define FRAG_BIT_TEX1 (1 << FRAG_ATTRIB_TEX1)
#define FRAG_BIT_TEX2 (1 << FRAG_ATTRIB_TEX2)
#define FRAG_BIT_TEX3 (1 << FRAG_ATTRIB_TEX3)
#define FRAG_BIT_TEX4 (1 << FRAG_ATTRIB_TEX4)
#define FRAG_BIT_TEX5 (1 << FRAG_ATTRIB_TEX5)
#define FRAG_BIT_TEX6 (1 << FRAG_ATTRIB_TEX6)
#define FRAG_BIT_TEX7 (1 << FRAG_ATTRIB_TEX7)
#define FRAG_BIT_VAR0 (1 << FRAG_ATTRIB_VAR0)
#define MAX_DRAW_BUFFERS 4
enum
{
FRAG_RESULT_COLR = 0,
FRAG_RESULT_COLH = 1,
FRAG_RESULT_DEPR = 2,
FRAG_RESULT_DATA0 = 3,
FRAG_RESULT_MAX = (FRAG_RESULT_DATA0 + MAX_DRAW_BUFFERS)
};
/**
* Program translation state
*/
struct i915_fp_compile {
struct pipe_shader_state *shader;
uint declarations[I915_PROGRAM_SIZE];
uint program[I915_PROGRAM_SIZE];
/** points into the i915->current.constants array: */
float (*constants)[4];
uint num_constants;
uint constant_flags[I915_MAX_CONSTANT]; /**< status of each constant */
uint *csr; /* Cursor, points into program.
*/
uint *decl; /* Cursor, points into declarations.
*/
uint decl_s; /* flags for which s regs need to be decl'd */
uint decl_t; /* flags for which t regs need to be decl'd */
uint temp_flag; /* Tracks temporary regs which are in
* use.
*/
uint utemp_flag; /* Tracks TYPE_U temporary regs which are in
* use.
*/
uint nr_tex_indirect;
uint nr_tex_insn;
uint nr_alu_insn;
uint nr_decl_insn;
boolean error; /**< Set if i915_program_error() is called */
uint wpos_tex;
uint NumNativeInstructions;
uint NumNativeAluInstructions;
uint NumNativeTexInstructions;
uint NumNativeTexIndirections;
};
/* 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)
{
assert(x < 4);
assert(y < 4);
assert(z < 4);
assert(w < 4);
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));
}
/***********************************************************************
* Public interface for the compiler
*/
extern void i915_translate_fragment_program( struct i915_context *i915 );
extern uint i915_get_temp(struct i915_fp_compile *p);
extern uint i915_get_utemp(struct i915_fp_compile *p);
extern void i915_release_utemps(struct i915_fp_compile *p);
extern uint i915_emit_texld(struct i915_fp_compile *p,
uint dest,
uint destmask,
uint sampler, uint coord, uint op);
extern uint i915_emit_arith(struct i915_fp_compile *p,
uint op,
uint dest,
uint mask,
uint saturate,
uint src0, uint src1, uint src2);
extern uint i915_emit_decl(struct i915_fp_compile *p,
uint type, uint nr, uint d0_flags);
extern uint i915_emit_const1f(struct i915_fp_compile *p, float c0);
extern uint i915_emit_const2f(struct i915_fp_compile *p,
float c0, float c1);
extern uint i915_emit_const4fv(struct i915_fp_compile *p,
const float * c);
extern uint i915_emit_const4f(struct i915_fp_compile *p,
float c0, float c1,
float c2, float c3);
/*======================================================================
* i915_fpc_debug.c
*/
extern void i915_disassemble_program(const uint * program, uint sz);
/*======================================================================
* i915_fpc_translate.c
*/
extern void
i915_program_error(struct i915_fp_compile *p, const char *msg);
extern void
i915_translate_fragment_program(struct i915_context *i915);
#endif
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