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/**
47 * 2GB is the actual max currently (we always use 32bit offsets, and both
48 * llvm GEP as well as avx2 gather use signed offsets).
49 */
50#define LP_MAX_TEXTURE_SIZE (2 * 1024 * 1024 * 1024ULL)
51#define LP_MAX_TEXTURE_2D_LEVELS 15  /* 16K x 16K for now */
52#define LP_MAX_TEXTURE_3D_LEVELS 12  /* 2K x 2K x 2K for now */
53#define LP_MAX_TEXTURE_CUBE_LEVELS 15  /* 16K x 16K for now */
54#define LP_MAX_TEXTURE_ARRAY_LAYERS 2048 /* 16K x 2048 / 16K x 16K x 2048 */
55
56
57/** This must be the larger of LP_MAX_TEXTURE_2D/3D_LEVELS */
58#define LP_MAX_TEXTURE_LEVELS LP_MAX_TEXTURE_2D_LEVELS
59
60
61/**
62 * Max drawing surface size is the max texture size
63 */
64#define LP_MAX_HEIGHT (1 << (LP_MAX_TEXTURE_LEVELS - 1))
65#define LP_MAX_WIDTH  (1 << (LP_MAX_TEXTURE_LEVELS - 1))
66
67#define LP_MAX_SAMPLES 4
68
69#define LP_MAX_THREADS 16
70
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 */
82#define LP_MAX_SHADER_INSTRUCTIONS (2048 * LP_MAX_SHADER_VARIANTS)
83
84/**
85 * Max number of setup variants that will be kept around.
86 *
87 * These are determined by the combination of the fragment shader
88 * input signature and a small amount of rasterization state (eg
89 * flatshading).  It is likely that many active fragment shaders will
90 * share the same setup variant.
91 */
92#define LP_MAX_SETUP_VARIANTS 64
93
94/*
95 * Max point size reported. Cap vertex shader point sizes to this.
96 */
97#define LP_MAX_POINT_WIDTH 255.0f
98#endif /* LP_LIMITS_H */
99