lp_screen.c revision 08dd41fd6899bd6b3289d30dc31f8b2998406889 
1/**************************************************************************
2 *
3 * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
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 TUNGSTEN GRAPHICS 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#include "util/u_memory.h"
30#include "util/u_simple_screen.h"
31#include "pipe/internal/p_winsys_screen.h"
32#include "pipe/p_defines.h"
33#include "pipe/p_screen.h"
34
35#include "lp_texture.h"
36#include "lp_winsys.h"
37#include "lp_jit.h"
38#include "lp_screen.h"
39
40
41static const char *
42llvmpipe_get_vendor(struct pipe_screen *screen)
43{
44   return "Tungsten Graphics, Inc.";
45}
46
47
48static const char *
49llvmpipe_get_name(struct pipe_screen *screen)
50{
51   return "llvmpipe";
52}
53
54
55static int
56llvmpipe_get_param(struct pipe_screen *screen, int param)
57{
58   switch (param) {
59   case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
60      return PIPE_MAX_SAMPLERS;
61   case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
62      return PIPE_MAX_SAMPLERS;
63   case PIPE_CAP_NPOT_TEXTURES:
64      return 1;
65   case PIPE_CAP_TWO_SIDED_STENCIL:
66      return 1;
67   case PIPE_CAP_GLSL:
68      return 1;
69   case PIPE_CAP_S3TC:
70      return 0;
71   case PIPE_CAP_ANISOTROPIC_FILTER:
72      return 0;
73   case PIPE_CAP_POINT_SPRITE:
74      return 1;
75   case PIPE_CAP_MAX_RENDER_TARGETS:
76      return PIPE_MAX_COLOR_BUFS;
77   case PIPE_CAP_OCCLUSION_QUERY:
78      return 1;
79   case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
80      return 1;
81   case PIPE_CAP_TEXTURE_MIRROR_REPEAT:
82      return 1;
83   case PIPE_CAP_TEXTURE_SHADOW_MAP:
84      return 1;
85   case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
86      return 13; /* max 4Kx4K */
87   case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
88      return 8;  /* max 128x128x128 */
89   case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
90      return 13; /* max 4Kx4K */
91   case PIPE_CAP_TGSI_CONT_SUPPORTED:
92      return 1;
93   case PIPE_CAP_BLEND_EQUATION_SEPARATE:
94      return 1;
95   default:
96      return 0;
97   }
98}
99
100
101static float
102llvmpipe_get_paramf(struct pipe_screen *screen, int param)
103{
104   switch (param) {
105   case PIPE_CAP_MAX_LINE_WIDTH:
106      /* fall-through */
107   case PIPE_CAP_MAX_LINE_WIDTH_AA:
108      return 255.0; /* arbitrary */
109   case PIPE_CAP_MAX_POINT_WIDTH:
110      /* fall-through */
111   case PIPE_CAP_MAX_POINT_WIDTH_AA:
112      return 255.0; /* arbitrary */
113   case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
114      return 16.0; /* not actually signficant at this time */
115   case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
116      return 16.0; /* arbitrary */
117   default:
118      return 0;
119   }
120}
121
122
123/**
124 * Query format support for creating a texture, drawing surface, etc.
125 * \param format  the format to test
126 * \param type  one of PIPE_TEXTURE, PIPE_SURFACE
127 */
128static boolean
129llvmpipe_is_format_supported( struct pipe_screen *screen,
130                              enum pipe_format format,
131                              enum pipe_texture_target target,
132                              unsigned tex_usage,
133                              unsigned geom_flags )
134{
135   assert(target == PIPE_TEXTURE_1D ||
136          target == PIPE_TEXTURE_2D ||
137          target == PIPE_TEXTURE_3D ||
138          target == PIPE_TEXTURE_CUBE);
139
140   if(format == PIPE_FORMAT_Z16_UNORM)
141      return FALSE;
142   if(format == PIPE_FORMAT_S8_UNORM)
143      return FALSE;
144
145   switch(format) {
146   case PIPE_FORMAT_DXT1_RGB:
147   case PIPE_FORMAT_DXT1_RGBA:
148   case PIPE_FORMAT_DXT3_RGBA:
149   case PIPE_FORMAT_DXT5_RGBA:
150      return FALSE;
151   default:
152      return TRUE;
153   }
154}
155
156
157static void
158llvmpipe_destroy_screen( struct pipe_screen *_screen )
159{
160   struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
161
162   struct pipe_winsys *winsys = _screen->winsys;
163
164   lp_jit_screen_cleanup(screen);
165
166   if(winsys->destroy)
167      winsys->destroy(winsys);
168
169   FREE(screen);
170}
171
172
173
174/**
175 * Create a new pipe_screen object
176 * Note: we're not presently subclassing pipe_screen (no llvmpipe_screen).
177 */
178struct pipe_screen *
179llvmpipe_create_screen(struct pipe_winsys *winsys)
180{
181   struct llvmpipe_screen *screen = CALLOC_STRUCT(llvmpipe_screen);
182
183   if (!screen)
184      return NULL;
185
186   screen->base.winsys = winsys;
187
188   screen->base.destroy = llvmpipe_destroy_screen;
189
190   screen->base.get_name = llvmpipe_get_name;
191   screen->base.get_vendor = llvmpipe_get_vendor;
192   screen->base.get_param = llvmpipe_get_param;
193   screen->base.get_paramf = llvmpipe_get_paramf;
194   screen->base.is_format_supported = llvmpipe_is_format_supported;
195
196   llvmpipe_init_screen_texture_funcs(&screen->base);
197   u_simple_screen_init(&screen->base);
198
199   lp_jit_screen_init(screen);
200
201   return &screen->base;
202}
203