src/gallium/drivers/softpipe/sp_screen.c

   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 "sp_texture.h"
  36 #include "sp_winsys.h"
  37 #include "sp_screen.h"
  38
  39
  40 static const char *
  41 softpipe_get_vendor(struct pipe_screen *screen)
  42 {
  43    return "VMware, Inc.";
  44 }
  45
  46
  47 static const char *
  48 softpipe_get_name(struct pipe_screen *screen)
  49 {
  50    return "softpipe";
  51 }
  52
  53
  54 static int
  55 softpipe_get_param(struct pipe_screen *screen, int param)
  56 {
  57    switch (param) {
  58    case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
  59       return PIPE_MAX_SAMPLERS;
  60    case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
  61       return PIPE_MAX_VERTEX_SAMPLERS;
  62    case PIPE_CAP_MAX_COMBINED_SAMPLERS:
  63       return PIPE_MAX_SAMPLERS + PIPE_MAX_VERTEX_SAMPLERS;
  64    case PIPE_CAP_NPOT_TEXTURES:
  65       return 1;
  66    case PIPE_CAP_TWO_SIDED_STENCIL:
  67       return 1;
  68    case PIPE_CAP_GLSL:
  69       return 1;
  70    case PIPE_CAP_ANISOTROPIC_FILTER:
  71       return 0;
  72    case PIPE_CAP_POINT_SPRITE:
  73       return 1;
  74    case PIPE_CAP_MAX_RENDER_TARGETS:
  75       return PIPE_MAX_COLOR_BUFS;
  76    case PIPE_CAP_OCCLUSION_QUERY:
  77       return 1;
  78    case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
  79       return 1;
  80    case PIPE_CAP_TEXTURE_MIRROR_REPEAT:
  81       return 1;
  82    case PIPE_CAP_TEXTURE_SHADOW_MAP:
  83       return 1;
  84    case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
  85       return 13; /* max 4Kx4K */
  86    case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
  87       return 9;  /* max 256x256x256 */
  88    case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
  89       return 13; /* max 4Kx4K */
  90    case PIPE_CAP_TGSI_CONT_SUPPORTED:
  91       return 1;
  92    case PIPE_CAP_BLEND_EQUATION_SEPARATE:
  93       return 1;
  94    case PIPE_CAP_MAX_CONST_BUFFERS:
  95       return PIPE_MAX_CONSTANT_BUFFERS;
  96    case PIPE_CAP_MAX_CONST_BUFFER_SIZE:
  97       return 4096 * 4 * sizeof(float);
  98    case PIPE_CAP_INDEP_BLEND_ENABLE:
  99       return 1;
 100    case PIPE_CAP_INDEP_BLEND_FUNC:
 101       return 1;
 102    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 103    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 104    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 105    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 106       return 1;
 107    default:
 108       return 0;
 109    }
 110 }
 111
 112
 113 static float
 114 softpipe_get_paramf(struct pipe_screen *screen, int param)
 115 {
 116    switch (param) {
 117    case PIPE_CAP_MAX_LINE_WIDTH:
 118       /* fall-through */
 119    case PIPE_CAP_MAX_LINE_WIDTH_AA:
 120       return 255.0; /* arbitrary */
 121    case PIPE_CAP_MAX_POINT_WIDTH:
 122       /* fall-through */
 123    case PIPE_CAP_MAX_POINT_WIDTH_AA:
 124       return 255.0; /* arbitrary */
 125    case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
 126       return 16.0; /* not actually signficant at this time */
 127    case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
 128       return 16.0; /* arbitrary */
 129    default:
 130       return 0;
 131    }
 132 }
 133
 134
 135 /**
 136  * Query format support for creating a texture, drawing surface, etc.
 137  * \param format  the format to test
 138  * \param type  one of PIPE_TEXTURE, PIPE_SURFACE
 139  */
 140 static boolean
 141 softpipe_is_format_supported( struct pipe_screen *screen,
 142                               enum pipe_format format,
 143                               enum pipe_texture_target target,
 144                               unsigned tex_usage,
 145                               unsigned geom_flags )
 146 {
 147    assert(target == PIPE_TEXTURE_1D ||
 148           target == PIPE_TEXTURE_2D ||
 149           target == PIPE_TEXTURE_3D ||
 150           target == PIPE_TEXTURE_CUBE);
 151
 152    switch(format) {
 153    case PIPE_FORMAT_L16_UNORM:
 154    case PIPE_FORMAT_YCBCR_REV:
 155    case PIPE_FORMAT_YCBCR:
 156    case PIPE_FORMAT_DXT1_RGB:
 157    case PIPE_FORMAT_DXT1_RGBA:
 158    case PIPE_FORMAT_DXT3_RGBA:
 159    case PIPE_FORMAT_DXT5_RGBA:
 160    case PIPE_FORMAT_Z32_FLOAT:
 161    case PIPE_FORMAT_R8G8_SNORM:
 162    case PIPE_FORMAT_B6UG5SR5S_NORM:
 163    case PIPE_FORMAT_X8UB8UG8SR8S_NORM:
 164    case PIPE_FORMAT_A8B8G8R8_SNORM:
 165    case PIPE_FORMAT_NONE:
 166       return FALSE;
 167    default:
 168       return TRUE;
 169    }
 170 }
 171
 172
 173 static void
 174 softpipe_destroy_screen( struct pipe_screen *screen )
 175 {
 176    struct pipe_winsys *winsys = screen->winsys;
 177
 178    if(winsys->destroy)
 179       winsys->destroy(winsys);
 180
 181    FREE(screen);
 182 }
 183
 184
 185
 186 /**
 187  * Create a new pipe_screen object
 188  * Note: we're not presently subclassing pipe_screen (no softpipe_screen).
 189  */
 190 struct pipe_screen *
 191 softpipe_create_screen(struct pipe_winsys *winsys)
 192 {
 193    struct softpipe_screen *screen = CALLOC_STRUCT(softpipe_screen);
 194
 195    if (!screen)
 196       return NULL;
 197
 198    screen->base.winsys = winsys;
 199
 200    screen->base.destroy = softpipe_destroy_screen;
 201
 202    screen->base.get_name = softpipe_get_name;
 203    screen->base.get_vendor = softpipe_get_vendor;
 204    screen->base.get_param = softpipe_get_param;
 205    screen->base.get_paramf = softpipe_get_paramf;
 206    screen->base.is_format_supported = softpipe_is_format_supported;
 207
 208    softpipe_init_screen_texture_funcs(&screen->base);
 209    u_simple_screen_init(&screen->base);
 210
 211    return &screen->base;
 212 }