src/gallium/drivers/i915simple/i915_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 "pipe/p_util.h"
  30 #include "pipe/p_winsys.h"
  31
  32 #include "i915_reg.h"
  33 #include "i915_context.h"
  34 #include "i915_screen.h"
  35 #include "i915_texture.h"
  36
  37
  38 static const char *
  39 i915_get_vendor( struct pipe_screen *pscreen )
  40 {
  41    return "Tungsten Graphics, Inc.";
  42 }
  43
  44
  45 static const char *
  46 i915_get_name( struct pipe_screen *pscreen )
  47 {
  48    static char buffer[128];
  49    const char *chipset;
  50
  51    switch (i915_screen(pscreen)->pci_id) {
  52    case PCI_CHIP_I915_G:
  53       chipset = "915G";
  54       break;
  55    case PCI_CHIP_I915_GM:
  56       chipset = "915GM";
  57       break;
  58    case PCI_CHIP_I945_G:
  59       chipset = "945G";
  60       break;
  61    case PCI_CHIP_I945_GM:
  62       chipset = "945GM";
  63       break;
  64    case PCI_CHIP_I945_GME:
  65       chipset = "945GME";
  66       break;
  67    case PCI_CHIP_G33_G:
  68       chipset = "G33";
  69       break;
  70    case PCI_CHIP_Q35_G:
  71       chipset = "Q35";
  72       break;
  73    case PCI_CHIP_Q33_G:
  74       chipset = "Q33";
  75       break;
  76    default:
  77       chipset = "unknown";
  78       break;
  79    }
  80
  81    sprintf(buffer, "i915 (chipset: %s)", chipset);
  82    return buffer;
  83 }
  84
  85
  86 static int
  87 i915_get_param(struct pipe_screen *screen, int param)
  88 {
  89    switch (param) {
  90    case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
  91       return 8;
  92    case PIPE_CAP_NPOT_TEXTURES:
  93       return 1;
  94    case PIPE_CAP_TWO_SIDED_STENCIL:
  95       return 1;
  96    case PIPE_CAP_GLSL:
  97       return 0;
  98    case PIPE_CAP_S3TC:
  99       return 0;
 100    case PIPE_CAP_ANISOTROPIC_FILTER:
 101       return 0;
 102    case PIPE_CAP_POINT_SPRITE:
 103       return 0;
 104    case PIPE_CAP_MAX_RENDER_TARGETS:
 105       return 1;
 106    case PIPE_CAP_OCCLUSION_QUERY:
 107       return 0;
 108    case PIPE_CAP_TEXTURE_SHADOW_MAP:
 109       return 1;
 110    case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 111       return 11; /* max 1024x1024 */
 112    case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 113       return 8;  /* max 128x128x128 */
 114    case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 115       return 11; /* max 1024x1024 */
 116    default:
 117       return 0;
 118    }
 119 }
 120
 121
 122 static float
 123 i915_get_paramf(struct pipe_screen *screen, int param)
 124 {
 125    switch (param) {
 126    case PIPE_CAP_MAX_LINE_WIDTH:
 127       /* fall-through */
 128    case PIPE_CAP_MAX_LINE_WIDTH_AA:
 129       return 7.5;
 130
 131    case PIPE_CAP_MAX_POINT_WIDTH:
 132       /* fall-through */
 133    case PIPE_CAP_MAX_POINT_WIDTH_AA:
 134       return 255.0;
 135
 136    case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
 137       return 4.0;
 138
 139    case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
 140       return 16.0;
 141
 142    default:
 143       return 0;
 144    }
 145 }
 146
 147
 148 static boolean
 149 i915_is_format_supported( struct pipe_screen *screen,
 150                           enum pipe_format format, uint type )
 151 {
 152    static const enum pipe_format tex_supported[] = {
 153       PIPE_FORMAT_R8G8B8A8_UNORM,
 154       PIPE_FORMAT_A8R8G8B8_UNORM,
 155       PIPE_FORMAT_R5G6B5_UNORM,
 156       PIPE_FORMAT_U_L8,
 157       PIPE_FORMAT_U_A8,
 158       PIPE_FORMAT_U_I8,
 159       PIPE_FORMAT_U_A8_L8,
 160       PIPE_FORMAT_YCBCR,
 161       PIPE_FORMAT_YCBCR_REV,
 162       PIPE_FORMAT_S8Z24_UNORM,
 163       PIPE_FORMAT_NONE  /* list terminator */
 164    };
 165    static const enum pipe_format surface_supported[] = {
 166       PIPE_FORMAT_A8R8G8B8_UNORM,
 167       PIPE_FORMAT_R5G6B5_UNORM,
 168       PIPE_FORMAT_S8Z24_UNORM,
 169       /*PIPE_FORMAT_R16G16B16A16_SNORM,*/
 170       PIPE_FORMAT_NONE  /* list terminator */
 171    };
 172    const enum pipe_format *list;
 173    uint i;
 174
 175    switch (type) {
 176    case PIPE_TEXTURE:
 177       list = tex_supported;
 178       break;
 179    case PIPE_SURFACE:
 180       list = surface_supported;
 181       break;
 182    default:
 183       assert(0);
 184    }
 185
 186    for (i = 0; list[i] != PIPE_FORMAT_NONE; i++) {
 187       if (list[i] == format)
 188          return TRUE;
 189    }
 190
 191    return FALSE;
 192 }
 193
 194
 195 static void
 196 i915_destroy_screen( struct pipe_screen *screen )
 197 {
 198    FREE(screen);
 199 }
 200
 201
 202 /**
 203  * Create a new i915_screen object
 204  */
 205 struct pipe_screen *
 206 i915_create_screen(struct pipe_winsys *winsys, uint pci_id)
 207 {
 208    struct i915_screen *i915screen = CALLOC_STRUCT(i915_screen);
 209
 210    if (!i915screen)
 211       return NULL;
 212
 213    switch (pci_id) {
 214    case PCI_CHIP_I915_G:
 215    case PCI_CHIP_I915_GM:
 216       i915screen->is_i945 = FALSE;
 217       break;
 218
 219    case PCI_CHIP_I945_G:
 220    case PCI_CHIP_I945_GM:
 221    case PCI_CHIP_I945_GME:
 222    case PCI_CHIP_G33_G:
 223    case PCI_CHIP_Q33_G:
 224    case PCI_CHIP_Q35_G:
 225       i915screen->is_i945 = TRUE;
 226       break;
 227
 228    default:
 229       winsys->printf(winsys,
 230                      "%s: unknown pci id 0x%x, cannot create screen\n",
 231                      __FUNCTION__, pci_id);
 232       return NULL;
 233    }
 234
 235    i915screen->pci_id = pci_id;
 236
 237    i915screen->screen.winsys = winsys;
 238
 239    i915screen->screen.destroy = i915_destroy_screen;
 240
 241    i915screen->screen.get_name = i915_get_name;
 242    i915screen->screen.get_vendor = i915_get_vendor;
 243    i915screen->screen.get_param = i915_get_param;
 244    i915screen->screen.get_paramf = i915_get_paramf;
 245    i915screen->screen.is_format_supported = i915_is_format_supported;
 246
 247    i915_init_screen_texture_functions(&i915screen->screen);
 248
 249    return &i915screen->screen;
 250 }