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 "util/u_simple_screen.h"
  31 #include "pipe/p_defines.h"
  32 #include "pipe/p_screen.h"
  33
  34 #include "cell/common.h"
  35 #include "cell_context.h"
  36 #include "cell_screen.h"
  37 #include "cell_texture.h"
  38 #include "cell_public.h"
  39
  40 #include "state_tracker/sw_winsys.h"
  41
  42
  43 static const char *
  44 cell_get_vendor(struct pipe_screen *screen)
  45 {
  46    return "VMware, Inc.";
  47 }
  48
  49
  50 static const char *
  51 cell_get_name(struct pipe_screen *screen)
  52 {
  53    return "Cell";
  54 }
  55
  56
  57 static int
  58 cell_get_param(struct pipe_screen *screen, int param)
  59 {
  60    switch (param) {
  61    case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
  62       return CELL_MAX_SAMPLERS;
  63    case PIPE_CAP_MAX_COMBINED_SAMPLERS:
  64       return CELL_MAX_SAMPLERS;
  65    case PIPE_CAP_NPOT_TEXTURES:
  66       return 1;
  67    case PIPE_CAP_TWO_SIDED_STENCIL:
  68       return 1;
  69    case PIPE_CAP_GLSL:
  70       return 1;
  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 1;
  77    case PIPE_CAP_OCCLUSION_QUERY:
  78       return 1;
  79    case PIPE_CAP_TEXTURE_SHADOW_MAP:
  80       return 10;
  81    case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
  82       return CELL_MAX_TEXTURE_LEVELS;
  83    case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
  84       return 8;  /* max 128x128x128 */
  85    case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
  86       return CELL_MAX_TEXTURE_LEVELS;
  87    case PIPE_CAP_TEXTURE_MIRROR_REPEAT:
  88       return 1; /* XXX not really true */
  89    case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
  90       return 0; /* XXX to do */
  91    case PIPE_CAP_TGSI_CONT_SUPPORTED:
  92       return 1;
  93    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
  94    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
  95       return 1;
  96    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
  97    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
  98       return 0;
  99    case PIPE_CAP_BLEND_EQUATION_SEPARATE:
 100       return 1;
 101    default:
 102       return 0;
 103    }
 104 }
 105
 106
 107 static float
 108 cell_get_paramf(struct pipe_screen *screen, int param)
 109 {
 110    switch (param) {
 111    case PIPE_CAP_MAX_LINE_WIDTH:
 112       /* fall-through */
 113    case PIPE_CAP_MAX_LINE_WIDTH_AA:
 114       return 255.0; /* arbitrary */
 115
 116    case PIPE_CAP_MAX_POINT_WIDTH:
 117       /* fall-through */
 118    case PIPE_CAP_MAX_POINT_WIDTH_AA:
 119       return 255.0; /* arbitrary */
 120
 121    case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
 122       return 0.0;
 123
 124    case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
 125       return 16.0; /* arbitrary */
 126
 127    default:
 128       return 0;
 129    }
 130 }
 131
 132
 133 static boolean
 134 cell_is_format_supported( struct pipe_screen *screen,
 135                           enum pipe_format format,
 136                           enum pipe_texture_target target,
 137                           unsigned tex_usage,
 138                           unsigned geom_flags )
 139 {
 140    struct sw_winsys *winsys = cell_screen(screen)->winsys;
 141
 142    if (tex_usage & (PIPE_BIND_DISPLAY_TARGET |
 143                     PIPE_BIND_SCANOUT |
 144                     PIPE_BIND_SHARED)) {
 145       if (!winsys->is_displaytarget_format_supported(winsys, tex_usage, format))
 146          return FALSE;
 147    }
 148
 149    /* only a few formats are known to work at this time */
 150    switch (format) {
 151    case PIPE_FORMAT_Z24_UNORM_S8_USCALED:
 152    case PIPE_FORMAT_Z24X8_UNORM:
 153    case PIPE_FORMAT_B8G8R8A8_UNORM:
 154    case PIPE_FORMAT_I8_UNORM:
 155       return TRUE;
 156    default:
 157       return FALSE;
 158    }
 159 }
 160
 161
 162 static void
 163 cell_destroy_screen( struct pipe_screen *screen )
 164 {
 165    struct cell_screen *sp_screen = cell_screen(screen);
 166    struct sw_winsys *winsys = sp_screen->winsys;
 167
 168    if(winsys->destroy)
 169       winsys->destroy(winsys);
 170
 171    FREE(screen);
 172 }
 173
 174
 175
 176 /**
 177  * Create a new pipe_screen object
 178  * Note: we're not presently subclassing pipe_screen (no cell_screen) but
 179  * that would be the place to put SPU thread/context info...
 180  */
 181 struct pipe_screen *
 182 cell_create_screen(struct sw_winsys *winsys)
 183 {
 184    struct cell_screen *screen = CALLOC_STRUCT(cell_screen);
 185
 186    if (!screen)
 187       return NULL;
 188
 189    screen->winsys = winsys;
 190    screen->base.winsys = NULL;
 191
 192    screen->base.destroy = cell_destroy_screen;
 193
 194    screen->base.get_name = cell_get_name;
 195    screen->base.get_vendor = cell_get_vendor;
 196    screen->base.get_param = cell_get_param;
 197    screen->base.get_paramf = cell_get_paramf;
 198    screen->base.is_format_supported = cell_is_format_supported;
 199    screen->base.context_create = cell_create_context;
 200
 201    cell_init_screen_texture_funcs(&screen->base);
 202
 203    return &screen->base;
 204 }