/************************************************************************** * * Copyright 2007-2008 VMware, Inc. * All Rights Reserved. * Copyright 2009-2010 VMware, Inc. 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 VMWARE 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 TGSI_EXEC_H #define TGSI_EXEC_H #include "pipe/p_compiler.h" #include "pipe/p_state.h" #include "pipe/p_shader_tokens.h" #if defined __cplusplus extern "C" { #endif #define TGSI_CHAN_X 0 #define TGSI_CHAN_Y 1 #define TGSI_CHAN_Z 2 #define TGSI_CHAN_W 3 #define TGSI_NUM_CHANNELS 4 /* R,G,B,A */ #define TGSI_QUAD_SIZE 4 /* 4 pixel/quad */ #define TGSI_FOR_EACH_CHANNEL( CHAN )\ for (CHAN = 0; CHAN < TGSI_NUM_CHANNELS; CHAN++) #define TGSI_IS_DST0_CHANNEL_ENABLED( INST, CHAN )\ ((INST)->Dst[0].Register.WriteMask & (1 << (CHAN))) #define TGSI_IF_IS_DST0_CHANNEL_ENABLED( INST, CHAN )\ if (TGSI_IS_DST0_CHANNEL_ENABLED( INST, CHAN )) #define TGSI_FOR_EACH_DST0_ENABLED_CHANNEL( INST, CHAN )\ TGSI_FOR_EACH_CHANNEL( CHAN )\ TGSI_IF_IS_DST0_CHANNEL_ENABLED( INST, CHAN ) /** * Registers may be treated as float, signed int or unsigned int. */ union tgsi_exec_channel { float f[TGSI_QUAD_SIZE]; int i[TGSI_QUAD_SIZE]; unsigned u[TGSI_QUAD_SIZE]; }; /** * A vector[RGBA] of channels[4 pixels] */ struct tgsi_exec_vector { union tgsi_exec_channel xyzw[TGSI_NUM_CHANNELS]; }; /** * For fragment programs, information for computing fragment input * values from plane equation of the triangle/line. */ struct tgsi_interp_coef { float a0[TGSI_NUM_CHANNELS]; /* in an xyzw layout */ float dadx[TGSI_NUM_CHANNELS]; float dady[TGSI_NUM_CHANNELS]; }; enum tgsi_sampler_control { tgsi_sampler_lod_none, tgsi_sampler_lod_bias, tgsi_sampler_lod_explicit, tgsi_sampler_lod_zero, tgsi_sampler_derivs_explicit, tgsi_sampler_gather, }; /** * Information for sampling textures, which must be implemented * by code outside the TGSI executor. */ struct tgsi_sampler { /** Get samples for four fragments in a quad */ /* this interface contains 5 sets of channels that vary * depending on the sampler. * s - the first texture coordinate for sampling. * t - the second texture coordinate for sampling - unused for 1D, layer for 1D arrays. * r - the third coordinate for sampling for 3D, cube, cube arrays, * layer for 2D arrays. Compare value for 1D/2D shadows. * c0 - Compare value for shadow cube and shadow 2d arrays, * layer for cube arrays. * derivs - explicit derivatives. * offset - texel offsets * lod - lod value, except for shadow cube arrays (compare value there). */ void (*get_samples)(struct tgsi_sampler *sampler, const unsigned sview_index, const unsigned sampler_index, const float s[TGSI_QUAD_SIZE], const float t[TGSI_QUAD_SIZE], const float r[TGSI_QUAD_SIZE], const float c0[TGSI_QUAD_SIZE], const float c1[TGSI_QUAD_SIZE], float derivs[3][2][TGSI_QUAD_SIZE], const int8_t offset[3], enum tgsi_sampler_control control, float rgba[TGSI_NUM_CHANNELS][TGSI_QUAD_SIZE]); void (*get_dims)(struct tgsi_sampler *sampler, const unsigned sview_index, int level, int dims[4]); void (*get_texel)(struct tgsi_sampler *sampler, const unsigned sview_index, const int i[TGSI_QUAD_SIZE], const int j[TGSI_QUAD_SIZE], const int k[TGSI_QUAD_SIZE], const int lod[TGSI_QUAD_SIZE], const int8_t offset[3], float rgba[TGSI_NUM_CHANNELS][TGSI_QUAD_SIZE]); }; #define TGSI_EXEC_NUM_TEMPS 4096 #define TGSI_EXEC_NUM_IMMEDIATES 256 /* * Locations of various utility registers (_I = Index, _C = Channel) */ #define TGSI_EXEC_TEMP_00000000_I (TGSI_EXEC_NUM_TEMPS + 0) #define TGSI_EXEC_TEMP_00000000_C 0 #define TGSI_EXEC_TEMP_7FFFFFFF_I (TGSI_EXEC_NUM_TEMPS + 0) #define TGSI_EXEC_TEMP_7FFFFFFF_C 1 #define TGSI_EXEC_TEMP_80000000_I (TGSI_EXEC_NUM_TEMPS + 0) #define TGSI_EXEC_TEMP_80000000_C 2 #define TGSI_EXEC_TEMP_FFFFFFFF_I (TGSI_EXEC_NUM_TEMPS + 0) #define TGSI_EXEC_TEMP_FFFFFFFF_C 3 #define TGSI_EXEC_TEMP_ONE_I (TGSI_EXEC_NUM_TEMPS + 1) #define TGSI_EXEC_TEMP_ONE_C 0 #define TGSI_EXEC_TEMP_TWO_I (TGSI_EXEC_NUM_TEMPS + 1) #define TGSI_EXEC_TEMP_TWO_C 1 #define TGSI_EXEC_TEMP_128_I (TGSI_EXEC_NUM_TEMPS + 1) #define TGSI_EXEC_TEMP_128_C 2 #define TGSI_EXEC_TEMP_MINUS_128_I (TGSI_EXEC_NUM_TEMPS + 1) #define TGSI_EXEC_TEMP_MINUS_128_C 3 #define TGSI_EXEC_TEMP_KILMASK_I (TGSI_EXEC_NUM_TEMPS + 2) #define TGSI_EXEC_TEMP_KILMASK_C 0 #define TGSI_EXEC_TEMP_OUTPUT_I (TGSI_EXEC_NUM_TEMPS + 2) #define TGSI_EXEC_TEMP_OUTPUT_C 1 #define TGSI_EXEC_TEMP_PRIMITIVE_I (TGSI_EXEC_NUM_TEMPS + 2) #define TGSI_EXEC_TEMP_PRIMITIVE_C 2 #define TGSI_EXEC_TEMP_THREE_I (TGSI_EXEC_NUM_TEMPS + 2) #define TGSI_EXEC_TEMP_THREE_C 3 #define TGSI_EXEC_TEMP_HALF_I (TGSI_EXEC_NUM_TEMPS + 3) #define TGSI_EXEC_TEMP_HALF_C 0 /* execution mask, each value is either 0 or ~0 */ #define TGSI_EXEC_MASK_I (TGSI_EXEC_NUM_TEMPS + 3) #define TGSI_EXEC_MASK_C 1 /* 4 register buffer for various purposes */ #define TGSI_EXEC_TEMP_R0 (TGSI_EXEC_NUM_TEMPS + 4) #define TGSI_EXEC_NUM_TEMP_R 4 #define TGSI_EXEC_TEMP_ADDR (TGSI_EXEC_NUM_TEMPS + 8) /* predicate register */ #define TGSI_EXEC_TEMP_P0 (TGSI_EXEC_NUM_TEMPS + 9) #define TGSI_EXEC_NUM_PREDS 1 #define TGSI_EXEC_NUM_TEMP_EXTRAS 10 #define TGSI_EXEC_MAX_NESTING 32 #define TGSI_EXEC_MAX_COND_NESTING TGSI_EXEC_MAX_NESTING #define TGSI_EXEC_MAX_LOOP_NESTING TGSI_EXEC_MAX_NESTING #define TGSI_EXEC_MAX_SWITCH_NESTING TGSI_EXEC_MAX_NESTING #define TGSI_EXEC_MAX_CALL_NESTING TGSI_EXEC_MAX_NESTING /* The maximum number of input attributes per vertex. For 2D * input register files, this is the stride between two 1D * arrays. */ #define TGSI_EXEC_MAX_INPUT_ATTRIBS PIPE_MAX_SHADER_INPUTS /* The maximum number of bytes per constant buffer. */ #define TGSI_EXEC_MAX_CONST_BUFFER_SIZE (4096 * sizeof(float[4])) /* The maximum number of vertices per primitive */ #define TGSI_MAX_PRIM_VERTICES 6 /* The maximum number of primitives to be generated */ #define TGSI_MAX_PRIMITIVES 64 /* The maximum total number of vertices */ #define TGSI_MAX_TOTAL_VERTICES (TGSI_MAX_PRIM_VERTICES * TGSI_MAX_PRIMITIVES * PIPE_MAX_ATTRIBS) #define TGSI_MAX_MISC_INPUTS 8 /** function call/activation record */ struct tgsi_call_record { uint CondStackTop; uint LoopStackTop; uint ContStackTop; int SwitchStackTop; int BreakStackTop; uint ReturnAddr; }; /* Switch-case block state. */ struct tgsi_switch_record { uint mask; /**< execution mask */ union tgsi_exec_channel selector; /**< a value case statements are compared to */ uint defaultMask; /**< non-execute mask for default case */ }; enum tgsi_break_type { TGSI_EXEC_BREAK_INSIDE_LOOP, TGSI_EXEC_BREAK_INSIDE_SWITCH }; #define TGSI_EXEC_MAX_BREAK_STACK (TGSI_EXEC_MAX_LOOP_NESTING + TGSI_EXEC_MAX_SWITCH_NESTING) /** * Run-time virtual machine state for executing TGSI shader. */ struct tgsi_exec_machine { /* Total = program temporaries + internal temporaries */ struct tgsi_exec_vector Temps[TGSI_EXEC_NUM_TEMPS + TGSI_EXEC_NUM_TEMP_EXTRAS]; float Imms[TGSI_EXEC_NUM_IMMEDIATES][4]; float ImmArray[TGSI_EXEC_NUM_IMMEDIATES][4]; struct tgsi_exec_vector *Inputs; struct tgsi_exec_vector *Outputs; /* System values */ unsigned SysSemanticToIndex[TGSI_SEMANTIC_COUNT]; union tgsi_exec_channel SystemValue[TGSI_MAX_MISC_INPUTS]; struct tgsi_exec_vector *Addrs; struct tgsi_exec_vector *Predicates; struct tgsi_sampler *Sampler; unsigned ImmLimit; const void *Consts[PIPE_MAX_CONSTANT_BUFFERS]; unsigned ConstsSize[PIPE_MAX_CONSTANT_BUFFERS]; const struct tgsi_token *Tokens; /**< Declarations, instructions */ unsigned Processor; /**< TGSI_PROCESSOR_x */ /* GEOMETRY processor only. */ unsigned *Primitives; unsigned NumOutputs; unsigned MaxGeometryShaderOutputs; unsigned MaxOutputVertices; /* FRAGMENT processor only. */ const struct tgsi_interp_coef *InterpCoefs; struct tgsi_exec_vector QuadPos; float Face; /**< +1 if front facing, -1 if back facing */ bool flatshade_color; /* 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 */ /* Current switch-case state. */ struct tgsi_switch_record Switch; /* Current break type. */ enum tgsi_break_type BreakType; /** 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 label stack */ uint LoopLabelStack[TGSI_EXEC_MAX_LOOP_NESTING]; int LoopLabelStackTop; /** Loop continue mask stack (see comments in tgsi_exec.c) */ uint ContStack[TGSI_EXEC_MAX_LOOP_NESTING]; int ContStackTop; /** Switch case stack */ struct tgsi_switch_record SwitchStack[TGSI_EXEC_MAX_SWITCH_NESTING]; int SwitchStackTop; enum tgsi_break_type BreakStack[TGSI_EXEC_MAX_BREAK_STACK]; int BreakStackTop; /** 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 */ struct tgsi_call_record CallStack[TGSI_EXEC_MAX_CALL_NESTING]; int CallStackTop; struct tgsi_full_instruction *Instructions; uint NumInstructions; struct tgsi_full_declaration *Declarations; uint NumDeclarations; struct tgsi_declaration_sampler_view SamplerViews[PIPE_MAX_SHADER_SAMPLER_VIEWS]; boolean UsedGeometryShader; }; struct tgsi_exec_machine * tgsi_exec_machine_create( void ); void tgsi_exec_machine_destroy(struct tgsi_exec_machine *mach); void tgsi_exec_machine_bind_shader( struct tgsi_exec_machine *mach, const struct tgsi_token *tokens, struct tgsi_sampler *sampler); uint tgsi_exec_machine_run( struct tgsi_exec_machine *mach ); void tgsi_exec_machine_free_data(struct tgsi_exec_machine *mach); boolean tgsi_check_soa_dependencies(const struct tgsi_full_instruction *inst); static INLINE void tgsi_set_kill_mask(struct tgsi_exec_machine *mach, unsigned mask) { mach->Temps[TGSI_EXEC_TEMP_KILMASK_I].xyzw[TGSI_EXEC_TEMP_KILMASK_C].u[0] = mask; } /** Set execution mask values prior to executing the shader */ static INLINE void tgsi_set_exec_mask(struct tgsi_exec_machine *mach, boolean ch0, boolean ch1, boolean ch2, boolean ch3) { int *mask = mach->Temps[TGSI_EXEC_MASK_I].xyzw[TGSI_EXEC_MASK_C].i; mask[0] = ch0 ? ~0 : 0; mask[1] = ch1 ? ~0 : 0; mask[2] = ch2 ? ~0 : 0; mask[3] = ch3 ? ~0 : 0; } extern void tgsi_exec_set_constant_buffers(struct tgsi_exec_machine *mach, unsigned num_bufs, const void **bufs, const unsigned *buf_sizes); static INLINE int tgsi_exec_get_shader_param(enum pipe_shader_cap param) { switch(param) { case PIPE_SHADER_CAP_MAX_INSTRUCTIONS: case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS: case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS: case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS: return INT_MAX; case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH: return TGSI_EXEC_MAX_NESTING; case PIPE_SHADER_CAP_MAX_INPUTS: return TGSI_EXEC_MAX_INPUT_ATTRIBS; case PIPE_SHADER_CAP_MAX_OUTPUTS: return 32; case PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE: return TGSI_EXEC_MAX_CONST_BUFFER_SIZE; case PIPE_SHADER_CAP_MAX_CONST_BUFFERS: return PIPE_MAX_CONSTANT_BUFFERS; case PIPE_SHADER_CAP_MAX_TEMPS: return TGSI_EXEC_NUM_TEMPS; case PIPE_SHADER_CAP_MAX_PREDS: return TGSI_EXEC_NUM_PREDS; case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED: return 1; case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR: case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR: case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR: case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR: return 1; case PIPE_SHADER_CAP_SUBROUTINES: return 1; case PIPE_SHADER_CAP_INTEGERS: return 1; case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS: return PIPE_MAX_SAMPLERS; case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS: return PIPE_MAX_SHADER_SAMPLER_VIEWS; case PIPE_SHADER_CAP_PREFERRED_IR: return PIPE_SHADER_IR_TGSI; case PIPE_SHADER_CAP_TGSI_SQRT_SUPPORTED: return 1; case PIPE_SHADER_CAP_DOUBLES: case PIPE_SHADER_CAP_TGSI_DFRACEXP_DLDEXP_SUPPORTED: return 1; case PIPE_SHADER_CAP_TGSI_DROUND_SUPPORTED: case PIPE_SHADER_CAP_TGSI_FMA_SUPPORTED: return 0; } /* if we get here, we missed a shader cap above (and should have seen * a compiler warning.) */ return 0; } #if defined __cplusplus } /* extern "C" */ #endif #endif /* TGSI_EXEC_H */