/************************************************************************** * * 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 ); void tgsi_exec_machine_bind_shader( struct tgsi_exec_machine *mach, const struct tgsi_token *tokens, uint 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 */