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/**************************************************************************
*
* Copyright 2010-2012 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 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
* THE COPYRIGHT HOLDERS, AUTHORS 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.
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
**************************************************************************/
#ifndef LP_BLD_LIMITS_H_
#define LP_BLD_LIMITS_H_
#include <limits.h>
#include "pipe/p_state.h"
#include "pipe/p_defines.h"
/*
* TGSI translation limits.
*
* Some are slightly above SM 3.0 requirements to give some wiggle room to
* the state trackers.
*/
#define LP_MAX_TGSI_TEMPS 4096
#define LP_MAX_TGSI_ADDRS 16
#define LP_MAX_TGSI_IMMEDIATES 4096
#define LP_MAX_TGSI_PREDS 16
#define LP_MAX_TGSI_CONST_BUFFERS 16
/*
* For quick access we cache registers in statically
* allocated arrays. Here we define the maximum size
* for those arrays.
*/
#define LP_MAX_INLINED_TEMPS 256
#define LP_MAX_INLINED_IMMEDIATES 256
/**
* Maximum control flow nesting
*
* SM4.0 requires 64 (per subroutine actually, subroutine nesting itself is 32)
* SM3.0 requires 24 (most likely per subroutine too)
* add 2 more (some translation could add one more)
*/
#define LP_MAX_TGSI_NESTING 66
/**
* Maximum iterations before loop termination
* Shared between every loop in a TGSI shader
*/
#define LP_MAX_TGSI_LOOP_ITERATIONS 65535
/**
* Some of these limits are actually infinite (i.e., only limited by available
* memory), however advertising INT_MAX would cause some test problems to
* actually try to allocate the maximum and run out of memory and crash. So
* stick with something reasonable here.
*/
static INLINE int
gallivm_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 1 * 1024 * 1024;
case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
return LP_MAX_TGSI_NESTING;
case PIPE_SHADER_CAP_MAX_INPUTS:
return PIPE_MAX_SHADER_INPUTS;
case PIPE_SHADER_CAP_MAX_OUTPUTS:
return 32;
case PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE:
return sizeof(float[4]) * 4096;
case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
return PIPE_MAX_CONSTANT_BUFFERS;
case PIPE_SHADER_CAP_MAX_TEMPS:
return LP_MAX_TGSI_TEMPS;
case PIPE_SHADER_CAP_MAX_PREDS:
return LP_MAX_TGSI_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_DROUND_SUPPORTED:
case PIPE_SHADER_CAP_TGSI_DFRACEXP_DLDEXP_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;
}
#endif /* LP_BLD_LIMITS_H_ */
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