/**************************************************************************
*
* 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 "i915_context.h"
#include "i915_reg.h"
#include "pipe/p_shader_tokens.h"
#include "tgsi/tgsi_parse.h"
#define I915_PROGRAM_SIZE 192
/* Use those indices for pos/face routing, must be >= num of inputs */
#define I915_SEMANTIC_POS 100
#define I915_SEMANTIC_FACE 101
/**
* Program translation state
*/
struct i915_fp_compile {
struct i915_fragment_shader *shader; /* the shader we're compiling */
boolean used_constants[I915_MAX_CONSTANT];
/** maps TGSI immediate index to constant slot */
uint num_immediates;
uint immediates_map[I915_MAX_CONSTANT];
float immediates[I915_MAX_CONSTANT][4];
boolean first_instruction;
uint declarations[I915_PROGRAM_SIZE];
uint program[I915_PROGRAM_SIZE];
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 register_phases[16];
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 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, uint x, uint y, uint z, uint w)
{
assert(x <= SRC_ONE);
assert(y <= SRC_ONE);
assert(z <= SRC_ONE);
assert(w <= SRC_ONE);
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));
}
#define A0_DEST( reg ) (((reg)&UREG_TYPE_NR_MASK)>>UREG_A0_DEST_SHIFT_LEFT)
#define D0_DEST( reg ) (((reg)&UREG_TYPE_NR_MASK)>>UREG_A0_DEST_SHIFT_LEFT)
#define T0_DEST( reg ) (((reg)&UREG_TYPE_NR_MASK)>>UREG_A0_DEST_SHIFT_LEFT)
#define A0_SRC0( reg ) (((reg)&UREG_MASK)>>UREG_A0_SRC0_SHIFT_LEFT)
#define A1_SRC0( reg ) (((reg)&UREG_MASK)<<UREG_A1_SRC0_SHIFT_RIGHT)
#define A1_SRC1( reg ) (((reg)&UREG_MASK)>>UREG_A1_SRC1_SHIFT_LEFT)
#define A2_SRC1( reg ) (((reg)&UREG_MASK)<<UREG_A2_SRC1_SHIFT_RIGHT)
#define A2_SRC2( reg ) (((reg)&UREG_MASK)>>UREG_A2_SRC2_SHIFT_LEFT)
/* These are special, and don't have swizzle/negate bits.
*/
#define T0_SAMPLER( reg ) (GET_UREG_NR(reg)<<T0_SAMPLER_NR_SHIFT)
#define T1_ADDRESS_REG( reg ) ((GET_UREG_NR(reg)<<T1_ADDRESS_REG_NR_SHIFT) | \
(GET_UREG_TYPE(reg)<<T1_ADDRESS_REG_TYPE_SHIFT))
/* Macros for translating UREG's into the various register fields used
* by the I915 programmable unit.
*/
#define UREG_A0_DEST_SHIFT_LEFT (UREG_TYPE_SHIFT - A0_DEST_TYPE_SHIFT)
#define UREG_A0_SRC0_SHIFT_LEFT (UREG_TYPE_SHIFT - A0_SRC0_TYPE_SHIFT)
#define UREG_A1_SRC0_SHIFT_RIGHT (A1_SRC0_CHANNEL_W_SHIFT - UREG_CHANNEL_W_SHIFT)
#define UREG_A1_SRC1_SHIFT_LEFT (UREG_TYPE_SHIFT - A1_SRC1_TYPE_SHIFT)
#define UREG_A2_SRC1_SHIFT_RIGHT (A2_SRC1_CHANNEL_W_SHIFT - UREG_CHANNEL_W_SHIFT)
#define UREG_A2_SRC2_SHIFT_LEFT (UREG_TYPE_SHIFT - A2_SRC2_TYPE_SHIFT)
#define UREG_MASK 0xffffff00
#define UREG_TYPE_NR_MASK ((REG_TYPE_MASK << UREG_TYPE_SHIFT) | \
(REG_NR_MASK << UREG_NR_SHIFT))
/***********************************************************************
* Public interface for the compiler
*/
extern void
i915_translate_fragment_program( struct i915_context *i915,
struct i915_fragment_shader *fs);
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,
uint num_coord);
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_translate.c
*/
extern void
i915_program_error(struct i915_fp_compile *p, const char *msg, ...);
/*======================================================================
* i915_fpc_optimize.c
*/
struct i915_src_register
{
unsigned File : 4; /* TGSI_FILE_ */
unsigned Indirect : 1; /* BOOL */
unsigned Dimension : 1; /* BOOL */
int Index : 16; /* SINT */
unsigned SwizzleX : 3; /* TGSI_SWIZZLE_ */
unsigned SwizzleY : 3; /* TGSI_SWIZZLE_ */
unsigned SwizzleZ : 3; /* TGSI_SWIZZLE_ */
unsigned SwizzleW : 3; /* TGSI_SWIZZLE_ */
unsigned Absolute : 1; /* BOOL */
unsigned Negate : 1; /* BOOL */
};
/* Additional swizzle supported in i915 */
#define TGSI_SWIZZLE_ZERO 4
#define TGSI_SWIZZLE_ONE 5
struct i915_dst_register
{
unsigned File : 4; /* TGSI_FILE_ */
unsigned WriteMask : 4; /* TGSI_WRITEMASK_ */
unsigned Indirect : 1; /* BOOL */
unsigned Dimension : 1; /* BOOL */
int Index : 16; /* SINT */
unsigned Padding : 6;
};
struct i915_full_dst_register
{
struct i915_dst_register Register;
/*
struct tgsi_ind_register Indirect;
struct tgsi_dimension Dimension;
struct tgsi_ind_register DimIndirect;
*/
};
struct i915_full_src_register
{
struct i915_src_register Register;
/*
struct tgsi_ind_register Indirect;
struct tgsi_dimension Dimension;
struct tgsi_ind_register DimIndirect;
*/
};
struct i915_full_instruction
{
struct tgsi_instruction Instruction;
/*
struct tgsi_instruction_predicate Predicate;
struct tgsi_instruction_label Label;
*/
struct tgsi_instruction_texture Texture;
struct i915_full_dst_register Dst[1];
struct i915_full_src_register Src[3];
};
union i915_full_token
{
struct tgsi_token Token;
struct tgsi_full_declaration FullDeclaration;
struct tgsi_full_immediate FullImmediate;
struct i915_full_instruction FullInstruction;
struct tgsi_full_property FullProperty;
};
struct i915_token_list
{
union i915_full_token* Tokens;
unsigned NumTokens;
};
extern struct i915_token_list* i915_optimize(const struct tgsi_token *tokens);
extern void i915_optimize_free(struct i915_token_list* tokens);
#endif