165 lines
5.2 KiB
C
165 lines
5.2 KiB
C
/**************************************************************************
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*
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* Copyright 2010-2012 VMware, Inc.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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* USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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**************************************************************************/
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#ifndef LP_BLD_LIMITS_H_
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#define LP_BLD_LIMITS_H_
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#include <limits.h>
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#include "pipe/p_state.h"
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#include "pipe/p_defines.h"
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/*
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* TGSI translation limits.
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*
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* Some are slightly above SM 3.0 requirements to give some wiggle room to
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* the gallium frontends.
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*/
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#define LP_MAX_TGSI_TEMPS 4096
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#define LP_MAX_TGSI_ADDRS 16
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#define LP_MAX_TGSI_IMMEDIATES 4096
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#define LP_MAX_TGSI_CONSTS 4096
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#define LP_MAX_TGSI_CONST_BUFFERS 16
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#define LP_MAX_TGSI_CONST_BUFFER_SIZE (LP_MAX_TGSI_CONSTS * sizeof(float[4]))
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#define LP_MAX_TGSI_SHADER_BUFFERS 16
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#define LP_MAX_TGSI_SHADER_BUFFER_SIZE (1 << 27)
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#define LP_MAX_TGSI_SHADER_IMAGES 16
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/*
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* For quick access we cache registers in statically
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* allocated arrays. Here we define the maximum size
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* for those arrays.
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*/
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#define LP_MAX_INLINED_TEMPS 256
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#define LP_MAX_INLINED_IMMEDIATES 256
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/**
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* Maximum control flow nesting
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*
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* SM4.0 requires 64 (per subroutine actually, subroutine nesting itself is 32)
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* SM3.0 requires 24 (most likely per subroutine too)
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* add 2 more (some translation could add one more)
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*/
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#define LP_MAX_TGSI_NESTING 66
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/**
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* Maximum iterations before loop termination
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* Shared between every loop in a TGSI shader
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*/
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#define LP_MAX_TGSI_LOOP_ITERATIONS 65535
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/**
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* Some of these limits are actually infinite (i.e., only limited by available
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* memory), however advertising INT_MAX would cause some test problems to
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* actually try to allocate the maximum and run out of memory and crash. So
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* stick with something reasonable here.
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*/
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static inline int
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gallivm_get_shader_param(enum pipe_shader_cap param)
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{
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switch(param) {
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case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
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case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
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case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
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case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
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return 1 * 1024 * 1024;
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case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
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return LP_MAX_TGSI_NESTING;
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case PIPE_SHADER_CAP_MAX_INPUTS:
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return 32;
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case PIPE_SHADER_CAP_MAX_OUTPUTS:
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return 32;
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case PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE:
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return LP_MAX_TGSI_CONST_BUFFER_SIZE;
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case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
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return PIPE_MAX_CONSTANT_BUFFERS;
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case PIPE_SHADER_CAP_MAX_TEMPS:
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return LP_MAX_TGSI_TEMPS;
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case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
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return 1;
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case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
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case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
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case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
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case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
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return 1;
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case PIPE_SHADER_CAP_SUBROUTINES:
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return 1;
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case PIPE_SHADER_CAP_INTEGERS:
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return 1;
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case PIPE_SHADER_CAP_INT64_ATOMICS:
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case PIPE_SHADER_CAP_FP16:
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return 0;
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case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
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return PIPE_MAX_SAMPLERS;
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case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
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return PIPE_MAX_SHADER_SAMPLER_VIEWS;
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case PIPE_SHADER_CAP_PREFERRED_IR:
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return PIPE_SHADER_IR_TGSI;
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case PIPE_SHADER_CAP_SUPPORTED_IRS:
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return (1 << PIPE_SHADER_IR_TGSI) | (1 << PIPE_SHADER_IR_NIR);
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case PIPE_SHADER_CAP_TGSI_SQRT_SUPPORTED:
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case PIPE_SHADER_CAP_TGSI_ANY_INOUT_DECL_RANGE:
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return 1;
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case PIPE_SHADER_CAP_TGSI_DROUND_SUPPORTED:
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case PIPE_SHADER_CAP_TGSI_DFRACEXP_DLDEXP_SUPPORTED:
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case PIPE_SHADER_CAP_TGSI_LDEXP_SUPPORTED:
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case PIPE_SHADER_CAP_TGSI_FMA_SUPPORTED:
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case PIPE_SHADER_CAP_LOWER_IF_THRESHOLD:
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case PIPE_SHADER_CAP_TGSI_SKIP_MERGE_REGISTERS:
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case PIPE_SHADER_CAP_MAX_HW_ATOMIC_COUNTERS:
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case PIPE_SHADER_CAP_MAX_HW_ATOMIC_COUNTER_BUFFERS:
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return 0;
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case PIPE_SHADER_CAP_MAX_UNROLL_ITERATIONS_HINT:
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return 32;
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case PIPE_SHADER_CAP_MAX_SHADER_BUFFERS:
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return LP_MAX_TGSI_SHADER_BUFFERS;
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case PIPE_SHADER_CAP_MAX_SHADER_IMAGES:
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return LP_MAX_TGSI_SHADER_IMAGES;
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}
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/* if we get here, we missed a shader cap above (and should have seen
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* a compiler warning.)
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*/
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return 0;
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}
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#endif /* LP_BLD_LIMITS_H_ */
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