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_buffer.h"
  39 #include "cell_public.h"
  40
  41 #include "state_tracker/sw_winsys.h"
  42
  43
  44 static const char *
  45 cell_get_vendor(struct pipe_screen *screen)
  46 {
  47    return "VMware, Inc.";
  48 }
  49
  50
  51 static const char *
  52 cell_get_name(struct pipe_screen *screen)
  53 {
  54    return "Cell";
  55 }
  56
  57
  58 static int
  59 cell_get_param(struct pipe_screen *screen, int param)
  60 {
  61    switch (param) {
  62    case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
  63       return CELL_MAX_SAMPLERS;
  64    case PIPE_CAP_MAX_COMBINED_SAMPLERS:
  65       return CELL_MAX_SAMPLERS;
  66    case PIPE_CAP_NPOT_TEXTURES:
  67       return 1;
  68    case PIPE_CAP_TWO_SIDED_STENCIL:
  69       return 1;
  70    case PIPE_CAP_GLSL:
  71       return 1;
  72    case PIPE_CAP_ANISOTROPIC_FILTER:
  73       return 0;
  74    case PIPE_CAP_POINT_SPRITE:
  75       return 1;
  76    case PIPE_CAP_MAX_RENDER_TARGETS:
  77       return 1;
  78    case PIPE_CAP_OCCLUSION_QUERY:
  79       return 1;
  80    case PIPE_CAP_TEXTURE_SHADOW_MAP:
  81       return 10;
  82    case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
  83       return CELL_MAX_TEXTURE_LEVELS;
  84    case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
  85       return 8;  /* max 128x128x128 */
  86    case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
  87       return CELL_MAX_TEXTURE_LEVELS;
  88    case PIPE_CAP_TEXTURE_MIRROR_REPEAT:
  89       return 1; /* XXX not really true */
  90    case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
  91       return 0; /* XXX to do */
  92    case PIPE_CAP_TGSI_CONT_SUPPORTED:
  93       return 1;
  94    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
  95    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
  96       return 1;
  97    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
  98    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
  99       return 0;
 100    case PIPE_CAP_BLEND_EQUATION_SEPARATE:
 101       return 1;
 102    default:
 103       return 0;
 104    }
 105 }
 106
 107
 108 static float
 109 cell_get_paramf(struct pipe_screen *screen, int param)
 110 {
 111    switch (param) {
 112    case PIPE_CAP_MAX_LINE_WIDTH:
 113       /* fall-through */
 114    case PIPE_CAP_MAX_LINE_WIDTH_AA:
 115       return 255.0; /* arbitrary */
 116
 117    case PIPE_CAP_MAX_POINT_WIDTH:
 118       /* fall-through */
 119    case PIPE_CAP_MAX_POINT_WIDTH_AA:
 120       return 255.0; /* arbitrary */
 121
 122    case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
 123       return 0.0;
 124
 125    case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
 126       return 16.0; /* arbitrary */
 127
 128    default:
 129       return 0;
 130    }
 131 }
 132
 133
 134 static boolean
 135 cell_is_format_supported( struct pipe_screen *screen,
 136                           enum pipe_format format,
 137                           enum pipe_texture_target target,
 138                           unsigned tex_usage,
 139                           unsigned geom_flags )
 140 {
 141
 142    struct sw_winsys *winsys = cell_screen(screen)->winsys;
 143
 144    if (tex_usage & (PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
 145                     PIPE_TEXTURE_USAGE_SCANOUT |
 146                     PIPE_TEXTURE_USAGE_SHARED)) {
 147       if (!winsys->is_displaytarget_format_supported(winsys, tex_usage, format))
 148          return FALSE;
 149    }
 150
 151    /* only a few formats are known to work at this time */
 152    switch (format) {
 153    case PIPE_FORMAT_Z24_UNORM_S8_USCALED:
 154    case PIPE_FORMAT_Z24X8_UNORM:
 155    case PIPE_FORMAT_B8G8R8A8_UNORM:
 156    case PIPE_FORMAT_I8_UNORM:
 157       return TRUE;
 158    default:
 159       return FALSE;
 160    }
 161 }
 162
 163
 164 static void
 165 cell_destroy_screen( struct pipe_screen *screen )
 166 {
 167    struct cell_screen *sp_screen = cell_screen(screen);
 168    struct sw_winsys *winsys = sp_screen->winsys;
 169
 170    if(winsys->destroy)
 171       winsys->destroy(winsys);
 172
 173    FREE(screen);
 174 }
 175
 176
 177
 178 /**
 179  * Create a new pipe_screen object
 180  * Note: we're not presently subclassing pipe_screen (no cell_screen) but
 181  * that would be the place to put SPU thread/context info...
 182  */
 183 struct pipe_screen *
 184 cell_create_screen(struct sw_winsys *winsys)
 185 {
 186    struct cell_screen *screen = CALLOC_STRUCT(cell_screen);
 187
 188    if (!screen)
 189       return NULL;
 190
 191    screen->winsys = winsys;
 192    screen->base.winsys = NULL;
 193
 194    screen->base.destroy = cell_destroy_screen;
 195
 196    screen->base.get_name = cell_get_name;
 197    screen->base.get_vendor = cell_get_vendor;
 198    screen->base.get_param = cell_get_param;
 199    screen->base.get_paramf = cell_get_paramf;
 200    screen->base.is_format_supported = cell_is_format_supported;
 201    screen->base.context_create = cell_create_context;
 202
 203    cell_init_screen_texture_funcs(&screen->base);
 204    cell_init_screen_buffer_funcs(&screen->base);
 205
 206    return &screen->base;
 207 }