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 "util/u_memory.h"
  30 #include "pipe/internal/p_winsys_screen.h"
  31 #include "pipe/p_inlines.h"
  32 #include "util/u_string.h"
  33
  34 #include "i915_reg.h"
  35 #include "i915_context.h"
  36 #include "i915_screen.h"
  37 #include "i915_texture.h"
  38
  39
  40 static const char *
  41 i915_get_vendor( struct pipe_screen *pscreen )
  42 {
  43    return "Tungsten Graphics, Inc.";
  44 }
  45
  46
  47 static const char *
  48 i915_get_name( struct pipe_screen *pscreen )
  49 {
  50    static char buffer[128];
  51    const char *chipset;
  52
  53    switch (i915_screen(pscreen)->pci_id) {
  54    case PCI_CHIP_I915_G:
  55       chipset = "915G";
  56       break;
  57    case PCI_CHIP_I915_GM:
  58       chipset = "915GM";
  59       break;
  60    case PCI_CHIP_I945_G:
  61       chipset = "945G";
  62       break;
  63    case PCI_CHIP_I945_GM:
  64       chipset = "945GM";
  65       break;
  66    case PCI_CHIP_I945_GME:
  67       chipset = "945GME";
  68       break;
  69    case PCI_CHIP_G33_G:
  70       chipset = "G33";
  71       break;
  72    case PCI_CHIP_Q35_G:
  73       chipset = "Q35";
  74       break;
  75    case PCI_CHIP_Q33_G:
  76       chipset = "Q33";
  77       break;
  78    default:
  79       chipset = "unknown";
  80       break;
  81    }
  82
  83    util_snprintf(buffer, sizeof(buffer), "i915 (chipset: %s)", chipset);
  84    return buffer;
  85 }
  86
  87
  88 static int
  89 i915_get_param(struct pipe_screen *screen, int param)
  90 {
  91    switch (param) {
  92    case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
  93       return 8;
  94    case PIPE_CAP_NPOT_TEXTURES:
  95       return 1;
  96    case PIPE_CAP_TWO_SIDED_STENCIL:
  97       return 1;
  98    case PIPE_CAP_GLSL:
  99       return 0;
 100    case PIPE_CAP_S3TC:
 101       return 0;
 102    case PIPE_CAP_ANISOTROPIC_FILTER:
 103       return 0;
 104    case PIPE_CAP_POINT_SPRITE:
 105       return 0;
 106    case PIPE_CAP_MAX_RENDER_TARGETS:
 107       return 1;
 108    case PIPE_CAP_OCCLUSION_QUERY:
 109       return 0;
 110    case PIPE_CAP_TEXTURE_SHADOW_MAP:
 111       return 1;
 112    case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 113       return 11; /* max 1024x1024 */
 114    case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 115       return 8;  /* max 128x128x128 */
 116    case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 117       return 11; /* max 1024x1024 */
 118    default:
 119       return 0;
 120    }
 121 }
 122
 123
 124 static float
 125 i915_get_paramf(struct pipe_screen *screen, int param)
 126 {
 127    switch (param) {
 128    case PIPE_CAP_MAX_LINE_WIDTH:
 129       /* fall-through */
 130    case PIPE_CAP_MAX_LINE_WIDTH_AA:
 131       return 7.5;
 132
 133    case PIPE_CAP_MAX_POINT_WIDTH:
 134       /* fall-through */
 135    case PIPE_CAP_MAX_POINT_WIDTH_AA:
 136       return 255.0;
 137
 138    case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
 139       return 4.0;
 140
 141    case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
 142       return 16.0;
 143
 144    default:
 145       return 0;
 146    }
 147 }
 148
 149
 150 static boolean
 151 i915_is_format_supported( struct pipe_screen *screen,
 152                           enum pipe_format format,
 153                           enum pipe_texture_target target,
 154                           unsigned tex_usage,
 155                           unsigned geom_flags )
 156 {
 157    static const enum pipe_format tex_supported[] = {
 158       PIPE_FORMAT_R8G8B8A8_UNORM,
 159       PIPE_FORMAT_A8R8G8B8_UNORM,
 160       PIPE_FORMAT_R5G6B5_UNORM,
 161       PIPE_FORMAT_L8_UNORM,
 162       PIPE_FORMAT_A8_UNORM,
 163       PIPE_FORMAT_I8_UNORM,
 164       PIPE_FORMAT_A8L8_UNORM,
 165       PIPE_FORMAT_YCBCR,
 166       PIPE_FORMAT_YCBCR_REV,
 167       PIPE_FORMAT_S8Z24_UNORM,
 168       PIPE_FORMAT_NONE  /* list terminator */
 169    };
 170    static const enum pipe_format surface_supported[] = {
 171       PIPE_FORMAT_A8R8G8B8_UNORM,
 172       PIPE_FORMAT_R5G6B5_UNORM,
 173       PIPE_FORMAT_S8Z24_UNORM,
 174       /*PIPE_FORMAT_R16G16B16A16_SNORM,*/
 175       PIPE_FORMAT_NONE  /* list terminator */
 176    };
 177    const enum pipe_format *list;
 178    uint i;
 179
 180    if(tex_usage & PIPE_TEXTURE_USAGE_RENDER_TARGET)
 181       list = surface_supported;
 182    else
 183       list = tex_supported;
 184
 185    for (i = 0; list[i] != PIPE_FORMAT_NONE; i++) {
 186       if (list[i] == format)
 187          return TRUE;
 188    }
 189
 190    return FALSE;
 191 }
 192
 193
 194 static void
 195 i915_destroy_screen( struct pipe_screen *screen )
 196 {
 197    struct pipe_winsys *winsys = screen->winsys;
 198
 199    if(winsys->destroy)
 200       winsys->destroy(winsys);
 201
 202    FREE(screen);
 203 }
 204
 205
 206 static void *
 207 i915_surface_map( struct pipe_screen *screen,
 208                   struct pipe_surface *surface,
 209                   unsigned flags )
 210 {
 211    char *map = pipe_buffer_map( screen, surface->buffer, flags );
 212    if (map == NULL)
 213       return NULL;
 214
 215    if (surface->texture &&
 216        (flags & PIPE_BUFFER_USAGE_CPU_WRITE))
 217    {
 218       /* Do something to notify contexts of a texture change.
 219        */
 220       /* i915_screen(screen)->timestamp++; */
 221    }
 222
 223    return map + surface->offset;
 224 }
 225
 226 static void
 227 i915_surface_unmap(struct pipe_screen *screen,
 228                    struct pipe_surface *surface)
 229 {
 230    pipe_buffer_unmap( screen, surface->buffer );
 231 }
 232
 233
 234
 235 /**
 236  * Create a new i915_screen object
 237  */
 238 struct pipe_screen *
 239 i915_create_screen(struct pipe_winsys *winsys, uint pci_id)
 240 {
 241    struct i915_screen *i915screen = CALLOC_STRUCT(i915_screen);
 242
 243    if (!i915screen)
 244       return NULL;
 245
 246    switch (pci_id) {
 247    case PCI_CHIP_I915_G:
 248    case PCI_CHIP_I915_GM:
 249       i915screen->is_i945 = FALSE;
 250       break;
 251
 252    case PCI_CHIP_I945_G:
 253    case PCI_CHIP_I945_GM:
 254    case PCI_CHIP_I945_GME:
 255    case PCI_CHIP_G33_G:
 256    case PCI_CHIP_Q33_G:
 257    case PCI_CHIP_Q35_G:
 258       i915screen->is_i945 = TRUE;
 259       break;
 260
 261    default:
 262       debug_printf("%s: unknown pci id 0x%x, cannot create screen\n",
 263                    __FUNCTION__, pci_id);
 264       return NULL;
 265    }
 266
 267    i915screen->pci_id = pci_id;
 268
 269    i915screen->screen.winsys = winsys;
 270
 271    i915screen->screen.destroy = i915_destroy_screen;
 272
 273    i915screen->screen.get_name = i915_get_name;
 274    i915screen->screen.get_vendor = i915_get_vendor;
 275    i915screen->screen.get_param = i915_get_param;
 276    i915screen->screen.get_paramf = i915_get_paramf;
 277    i915screen->screen.is_format_supported = i915_is_format_supported;
 278    i915screen->screen.surface_map = i915_surface_map;
 279    i915screen->screen.surface_unmap = i915_surface_unmap;
 280
 281    i915_init_screen_texture_functions(&i915screen->screen);
 282
 283    return &i915screen->screen;
 284 }