src/gallium/drivers/cell/ppu/cell_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 "pipe/p_winsys.h"
  31 #include "pipe/p_defines.h"
  32 #include "pipe/p_screen.h"
  33
  34 #include "cell/common.h"
  35 #include "cell_screen.h"
  36 #include "cell_texture.h"
  37 #include "cell_winsys.h"
  38
  39
  40 static const char *
  41 cell_get_vendor(struct pipe_screen *screen)
  42 {
  43    return "Tungsten Graphics, Inc.";
  44 }
  45
  46
  47 static const char *
  48 cell_get_name(struct pipe_screen *screen)
  49 {
  50    return "Cell";
  51 }
  52
  53
  54 static int
  55 cell_get_param(struct pipe_screen *screen, int param)
  56 {
  57    switch (param) {
  58    case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
  59       return CELL_MAX_SAMPLERS;
  60    case PIPE_CAP_NPOT_TEXTURES:
  61       return 1;
  62    case PIPE_CAP_TWO_SIDED_STENCIL:
  63       return 1;
  64    case PIPE_CAP_GLSL:
  65       return 1;
  66    case PIPE_CAP_S3TC:
  67       return 0;
  68    case PIPE_CAP_ANISOTROPIC_FILTER:
  69       return 0;
  70    case PIPE_CAP_POINT_SPRITE:
  71       return 1;
  72    case PIPE_CAP_MAX_RENDER_TARGETS:
  73       return 1;
  74    case PIPE_CAP_OCCLUSION_QUERY:
  75       return 1;
  76    case PIPE_CAP_TEXTURE_SHADOW_MAP:
  77       return 10;
  78    case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
  79       return CELL_MAX_TEXTURE_LEVELS;
  80    case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
  81       return 8;  /* max 128x128x128 */
  82    case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
  83       return CELL_MAX_TEXTURE_LEVELS;
  84    case PIPE_CAP_TEXTURE_MIRROR_REPEAT:
  85       return 1; /* XXX not really true */
  86    case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
  87       return 0; /* XXX to do */
  88    default:
  89       return 0;
  90    }
  91 }
  92
  93
  94 static float
  95 cell_get_paramf(struct pipe_screen *screen, int param)
  96 {
  97    switch (param) {
  98    case PIPE_CAP_MAX_LINE_WIDTH:
  99       /* fall-through */
 100    case PIPE_CAP_MAX_LINE_WIDTH_AA:
 101       return 255.0; /* arbitrary */
 102
 103    case PIPE_CAP_MAX_POINT_WIDTH:
 104       /* fall-through */
 105    case PIPE_CAP_MAX_POINT_WIDTH_AA:
 106       return 255.0; /* arbitrary */
 107
 108    case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
 109       return 0.0;
 110
 111    case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
 112       return 16.0; /* arbitrary */
 113
 114    default:
 115       return 0;
 116    }
 117 }
 118
 119
 120 static boolean
 121 cell_is_format_supported( struct pipe_screen *screen,
 122                           enum pipe_format format,
 123                           enum pipe_texture_target target,
 124                           unsigned tex_usage,
 125                           unsigned geom_flags )
 126 {
 127    /* cell supports most formats, XXX for now anyway */
 128    if (format == PIPE_FORMAT_DXT5_RGBA ||
 129        format == PIPE_FORMAT_R8G8B8A8_SRGB)
 130       return FALSE;
 131    else
 132       return TRUE;
 133 }
 134
 135
 136 static void
 137 cell_destroy_screen( struct pipe_screen *screen )
 138 {
 139    struct pipe_winsys *winsys = screen->winsys;
 140
 141    if(winsys->destroy)
 142       winsys->destroy(winsys);
 143
 144    FREE(screen);
 145 }
 146
 147
 148 /**
 149  * Create a new pipe_screen object
 150  * Note: we're not presently subclassing pipe_screen (no cell_screen) but
 151  * that would be the place to put SPU thread/context info...
 152  */
 153 struct pipe_screen *
 154 cell_create_screen(struct pipe_winsys *winsys)
 155 {
 156    struct pipe_screen *screen = CALLOC_STRUCT(pipe_screen);
 157
 158    if (!screen)
 159       return NULL;
 160
 161    screen->winsys = winsys;
 162
 163    screen->destroy = cell_destroy_screen;
 164
 165    screen->get_name = cell_get_name;
 166    screen->get_vendor = cell_get_vendor;
 167    screen->get_param = cell_get_param;
 168    screen->get_paramf = cell_get_paramf;
 169    screen->is_format_supported = cell_is_format_supported;
 170
 171    cell_init_screen_texture_funcs(screen);
 172
 173    return screen;
 174 }