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    default:
  95       return 0;
  96    }
  97 }
  98
  99
 100 static float
 101 softpipe_get_paramf(struct pipe_screen *screen, int param)
 102 {
 103    switch (param) {
 104    case PIPE_CAP_MAX_LINE_WIDTH:
 105       /* fall-through */
 106    case PIPE_CAP_MAX_LINE_WIDTH_AA:
 107       return 255.0; /* arbitrary */
 108    case PIPE_CAP_MAX_POINT_WIDTH:
 109       /* fall-through */
 110    case PIPE_CAP_MAX_POINT_WIDTH_AA:
 111       return 255.0; /* arbitrary */
 112    case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
 113       return 16.0; /* not actually signficant at this time */
 114    case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
 115       return 16.0; /* arbitrary */
 116    default:
 117       return 0;
 118    }
 119 }
 120
 121
 122 /**
 123  * Query format support for creating a texture, drawing surface, etc.
 124  * \param format  the format to test
 125  * \param type  one of PIPE_TEXTURE, PIPE_SURFACE
 126  */
 127 static boolean
 128 softpipe_is_format_supported( struct pipe_screen *screen,
 129                               enum pipe_format format,
 130                               enum pipe_texture_target target,
 131                               unsigned tex_usage,
 132                               unsigned geom_flags )
 133 {
 134    assert(target == PIPE_TEXTURE_1D ||
 135           target == PIPE_TEXTURE_2D ||
 136           target == PIPE_TEXTURE_3D ||
 137           target == PIPE_TEXTURE_CUBE);
 138
 139    switch(format) {
 140    case PIPE_FORMAT_L16_UNORM:
 141    case PIPE_FORMAT_YCBCR_REV:
 142    case PIPE_FORMAT_YCBCR:
 143    case PIPE_FORMAT_DXT1_RGB:
 144    case PIPE_FORMAT_DXT1_RGBA:
 145    case PIPE_FORMAT_DXT3_RGBA:
 146    case PIPE_FORMAT_DXT5_RGBA:
 147    case PIPE_FORMAT_Z32_FLOAT:
 148    case PIPE_FORMAT_R8G8_SNORM:
 149    case PIPE_FORMAT_B6UG5SR5S_NORM:
 150    case PIPE_FORMAT_X8UB8UG8SR8S_NORM:
 151    case PIPE_FORMAT_A8B8G8R8_SNORM:
 152    case PIPE_FORMAT_NONE:
 153       return FALSE;
 154    default:
 155       return TRUE;
 156    }
 157 }
 158
 159
 160 static void
 161 softpipe_destroy_screen( struct pipe_screen *screen )
 162 {
 163    struct pipe_winsys *winsys = screen->winsys;
 164
 165    if(winsys->destroy)
 166       winsys->destroy(winsys);
 167
 168    FREE(screen);
 169 }
 170
 171
 172
 173 /**
 174  * Create a new pipe_screen object
 175  * Note: we're not presently subclassing pipe_screen (no softpipe_screen).
 176  */
 177 struct pipe_screen *
 178 softpipe_create_screen(struct pipe_winsys *winsys)
 179 {
 180    struct softpipe_screen *screen = CALLOC_STRUCT(softpipe_screen);
 181
 182    if (!screen)
 183       return NULL;
 184
 185    screen->base.winsys = winsys;
 186
 187    screen->base.destroy = softpipe_destroy_screen;
 188
 189    screen->base.get_name = softpipe_get_name;
 190    screen->base.get_vendor = softpipe_get_vendor;
 191    screen->base.get_param = softpipe_get_param;
 192    screen->base.get_paramf = softpipe_get_paramf;
 193    screen->base.is_format_supported = softpipe_is_format_supported;
 194
 195    softpipe_init_screen_texture_funcs(&screen->base);
 196    u_simple_screen_init(&screen->base);
 197
 198    return &screen->base;
 199 }