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Diffstat (limited to 'src/gallium/aux/tgsi/exec/tgsi_exec.h')
| -rw-r--r-- | src/gallium/aux/tgsi/exec/tgsi_exec.h | 239 |
1 files changed, 239 insertions, 0 deletions
diff --git a/src/gallium/aux/tgsi/exec/tgsi_exec.h b/src/gallium/aux/tgsi/exec/tgsi_exec.h new file mode 100644 index 00000000000..1fb66ee960f --- /dev/null +++ b/src/gallium/aux/tgsi/exec/tgsi_exec.h @@ -0,0 +1,239 @@ +/************************************************************************** + * + * Copyright 2007 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. + * + **************************************************************************/ + +#if !defined TGSI_EXEC_H +#define TGSI_EXEC_H + +#include "pipe/p_compiler.h" + +#if defined __cplusplus +extern "C" { +#endif + +#define NUM_CHANNELS 4 /* R,G,B,A */ +#define QUAD_SIZE 4 /* 4 pixel/quad */ + +/** + * Registers may be treated as float, signed int or unsigned int. + */ +union tgsi_exec_channel +{ + float f[QUAD_SIZE]; + int i[QUAD_SIZE]; + unsigned u[QUAD_SIZE]; +}; + +/** + * A vector[RGBA] of channels[4 pixels] + */ +struct tgsi_exec_vector +{ + union tgsi_exec_channel xyzw[NUM_CHANNELS]; +}; + +/** + * For fragment programs, information for computing fragment input + * values from plane equation of the triangle/line. + */ +struct tgsi_interp_coef +{ + float a0[NUM_CHANNELS]; /* in an xyzw layout */ + float dadx[NUM_CHANNELS]; + float dady[NUM_CHANNELS]; +}; + + +struct softpipe_tile_cache; /**< Opaque to TGSI */ + +/** + * Information for sampling textures, which must be implemented + * by code outside the TGSI executor. + */ +struct tgsi_sampler +{ + const struct pipe_sampler_state *state; + struct pipe_texture *texture; + /** Get samples for four fragments in a quad */ + void (*get_samples)(struct tgsi_sampler *sampler, + const float s[QUAD_SIZE], + const float t[QUAD_SIZE], + const float p[QUAD_SIZE], + float lodbias, + float rgba[NUM_CHANNELS][QUAD_SIZE]); + void *pipe; /*XXX temporary*/ + struct softpipe_tile_cache *cache; +}; + +/** + * For branching/calling subroutines. + */ +struct tgsi_exec_labels +{ + unsigned labels[128][2]; + unsigned count; +}; + +/* + * Locations of various utility registers (_I = Index, _C = Channel) + */ +#define TGSI_EXEC_TEMP_00000000_I 32 +#define TGSI_EXEC_TEMP_00000000_C 0 + +#define TGSI_EXEC_TEMP_7FFFFFFF_I 32 +#define TGSI_EXEC_TEMP_7FFFFFFF_C 1 + +#define TGSI_EXEC_TEMP_80000000_I 32 +#define TGSI_EXEC_TEMP_80000000_C 2 + +#define TGSI_EXEC_TEMP_FFFFFFFF_I 32 +#define TGSI_EXEC_TEMP_FFFFFFFF_C 3 + +#define TGSI_EXEC_TEMP_ONE_I 33 +#define TGSI_EXEC_TEMP_ONE_C 0 + +#define TGSI_EXEC_TEMP_TWO_I 33 +#define TGSI_EXEC_TEMP_TWO_C 1 + +#define TGSI_EXEC_TEMP_128_I 33 +#define TGSI_EXEC_TEMP_128_C 2 + +#define TGSI_EXEC_TEMP_MINUS_128_I 33 +#define TGSI_EXEC_TEMP_MINUS_128_C 3 + +#define TGSI_EXEC_TEMP_KILMASK_I 34 +#define TGSI_EXEC_TEMP_KILMASK_C 0 + +#define TGSI_EXEC_TEMP_OUTPUT_I 34 +#define TGSI_EXEC_TEMP_OUTPUT_C 1 + +#define TGSI_EXEC_TEMP_PRIMITIVE_I 34 +#define TGSI_EXEC_TEMP_PRIMITIVE_C 2 + +#define TGSI_EXEC_TEMP_R0 35 + +#define TGSI_EXEC_NUM_TEMPS (32 + 4) +#define TGSI_EXEC_NUM_ADDRS 1 +#define TGSI_EXEC_NUM_IMMEDIATES 256 + +#define TGSI_EXEC_MAX_COND_NESTING 10 +#define TGSI_EXEC_MAX_LOOP_NESTING 10 +#define TGSI_EXEC_MAX_CALL_NESTING 10 + +/** + * Run-time virtual machine state for executing TGSI shader. + */ +struct tgsi_exec_machine +{ + /* + * 32 program temporaries + * 4 internal temporaries + * 1 address + * 1 temporary of padding to align to 16 bytes + */ + struct tgsi_exec_vector _Temps[TGSI_EXEC_NUM_TEMPS + TGSI_EXEC_NUM_ADDRS + 1]; + + /* + * This will point to _Temps after aligning to 16B boundary. + */ + struct tgsi_exec_vector *Temps; + struct tgsi_exec_vector *Addrs; + + struct tgsi_sampler *Samplers; + + float Imms[TGSI_EXEC_NUM_IMMEDIATES][4]; + unsigned ImmLimit; + float (*Consts)[4]; + struct tgsi_exec_vector *Inputs; + struct tgsi_exec_vector *Outputs; + const struct tgsi_token *Tokens; + unsigned Processor; + + /* GEOMETRY processor only. */ + unsigned *Primitives; + + /* FRAGMENT processor only. */ + const struct tgsi_interp_coef *InterpCoefs; + struct tgsi_exec_vector QuadPos; + + /* Conditional execution masks */ + uint CondMask; /**< For IF/ELSE/ENDIF */ + uint LoopMask; /**< For BGNLOOP/ENDLOOP */ + uint ContMask; /**< For loop CONT statements */ + uint FuncMask; /**< For function calls */ + uint ExecMask; /**< = CondMask & LoopMask */ + + /** Condition mask stack (for nested conditionals) */ + uint CondStack[TGSI_EXEC_MAX_COND_NESTING]; + int CondStackTop; + + /** Loop mask stack (for nested loops) */ + uint LoopStack[TGSI_EXEC_MAX_LOOP_NESTING]; + int LoopStackTop; + + /** Loop continue mask stack (see comments in tgsi_exec.c) */ + uint ContStack[TGSI_EXEC_MAX_LOOP_NESTING]; + int ContStackTop; + + /** Function execution mask stack (for executing subroutine code) */ + uint FuncStack[TGSI_EXEC_MAX_CALL_NESTING]; + int FuncStackTop; + + /** Function call stack for saving/restoring the program counter */ + uint CallStack[TGSI_EXEC_MAX_CALL_NESTING]; + int CallStackTop; + + struct tgsi_full_instruction *Instructions; + uint NumInstructions; + + struct tgsi_full_declaration *Declarations; + uint NumDeclarations; + + struct tgsi_exec_labels Labels; +}; + + +void +tgsi_exec_machine_init( + struct tgsi_exec_machine *mach, + const struct tgsi_token *tokens, + unsigned numSamplers, + struct tgsi_sampler *samplers); + +uint +tgsi_exec_machine_run( + struct tgsi_exec_machine *mach ); + + +void +tgsi_exec_machine_free_data(struct tgsi_exec_machine *mach); + + +#if defined __cplusplus +} /* extern "C" */ +#endif + +#endif /* TGSI_EXEC_H */ |