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      1 /**************************************************************************
      2  *
      3  * Copyright 2010 VMware, Inc.
      4  * All Rights Reserved.
      5  *
      6  * Permission is hereby granted, free of charge, to any person obtaining a
      7  * copy of this software and associated documentation files (the
      8  * "Software"), to deal in the Software without restriction, including
      9  * without limitation the rights to use, copy, modify, merge, publish,
     10  * distribute, sub license, and/or sell copies of the Software, and to
     11  * permit persons to whom the Software is furnished to do so, subject to
     12  * the following conditions:
     13  *
     14  * The above copyright notice and this permission notice (including the
     15  * next paragraph) shall be included in all copies or substantial portions
     16  * of the Software.
     17  *
     18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
     19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
     20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
     21  * IN NO EVENT SHALL THE AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR
     22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
     23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
     24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
     25  *
     26  **************************************************************************/
     27 
     28 /**
     29  * Implementation limits for LLVMpipe driver.
     30  */
     31 
     32 #ifndef LP_LIMITS_H
     33 #define LP_LIMITS_H
     34 
     35 
     36 /**
     37  * Tile size (width and height). This needs to be a power of two.
     38  */
     39 #define TILE_ORDER 6
     40 #define TILE_SIZE (1 << TILE_ORDER)
     41 
     42 
     43 /**
     44  * Max texture sizes
     45  */
     46 #define LP_MAX_TEXTURE_SIZE (1 * 1024 * 1024 * 1024ULL)  /* 1GB for now */
     47 #define LP_MAX_TEXTURE_2D_LEVELS 14  /* 8K x 8K for now */
     48 #define LP_MAX_TEXTURE_3D_LEVELS 12  /* 2K x 2K x 2K for now */
     49 #define LP_MAX_TEXTURE_CUBE_LEVELS 14  /* 8K x 8K for now */
     50 #define LP_MAX_TEXTURE_ARRAY_LAYERS 512 /* 8K x 512 / 8K x 8K x 512 */
     51 
     52 
     53 /** This must be the larger of LP_MAX_TEXTURE_2D/3D_LEVELS */
     54 #define LP_MAX_TEXTURE_LEVELS LP_MAX_TEXTURE_2D_LEVELS
     55 
     56 
     57 /**
     58  * Max drawing surface size is the max texture size
     59  */
     60 #define LP_MAX_HEIGHT (1 << (LP_MAX_TEXTURE_LEVELS - 1))
     61 #define LP_MAX_WIDTH  (1 << (LP_MAX_TEXTURE_LEVELS - 1))
     62 
     63 
     64 #define LP_MAX_THREADS 16
     65 
     66 
     67 /**
     68  * Max bytes per scene.  This may be replaced by a runtime parameter.
     69  */
     70 #define LP_MAX_SCENE_SIZE (512 * 1024 * 1024)
     71 
     72 /**
     73  * Max number of shader variants (for all shaders combined,
     74  * per context) that will be kept around.
     75  */
     76 #define LP_MAX_SHADER_VARIANTS 1024
     77 
     78 /**
     79  * Max number of instructions (for all fragment shaders combined per context)
     80  * that will be kept around (counted in terms of llvm ir).
     81  * Note: the definition looks odd, but there's branches which use a different
     82  * number of max shader variants.
     83  */
     84 #define LP_MAX_SHADER_INSTRUCTIONS MAX2(256*1024, 512*LP_MAX_SHADER_VARIANTS)
     85 
     86 /**
     87  * Max number of setup variants that will be kept around.
     88  *
     89  * These are determined by the combination of the fragment shader
     90  * input signature and a small amount of rasterization state (eg
     91  * flatshading).  It is likely that many active fragment shaders will
     92  * share the same setup variant.
     93  */
     94 #define LP_MAX_SETUP_VARIANTS 64
     95 
     96 #endif /* LP_LIMITS_H */
     97