src/gallium/drivers/i915/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_inlines.h"
  30 #include "util/u_memory.h"
  31 #include "util/u_string.h"
  32
  33 #include "i915_reg.h"
  34 #include "i915_context.h"
  35 #include "i915_screen.h"
  36 #include "i915_buffer.h"
  37 #include "i915_texture.h"
  38 #include "intel_winsys.h"
  39
  40
  41 /*
  42  * Probe functions
  43  */
  44
  45
  46 static const char *
  47 i915_get_vendor(struct pipe_screen *screen)
  48 {
  49    return "VMware, Inc.";
  50 }
  51
  52 static const char *
  53 i915_get_name(struct pipe_screen *screen)
  54 {
  55    static char buffer[128];
  56    const char *chipset;
  57
  58    switch (i915_screen(screen)->pci_id) {
  59    case PCI_CHIP_I915_G:
  60       chipset = "915G";
  61       break;
  62    case PCI_CHIP_I915_GM:
  63       chipset = "915GM";
  64       break;
  65    case PCI_CHIP_I945_G:
  66       chipset = "945G";
  67       break;
  68    case PCI_CHIP_I945_GM:
  69       chipset = "945GM";
  70       break;
  71    case PCI_CHIP_I945_GME:
  72       chipset = "945GME";
  73       break;
  74    case PCI_CHIP_G33_G:
  75       chipset = "G33";
  76       break;
  77    case PCI_CHIP_Q35_G:
  78       chipset = "Q35";
  79       break;
  80    case PCI_CHIP_Q33_G:
  81       chipset = "Q33";
  82       break;
  83    default:
  84       chipset = "unknown";
  85       break;
  86    }
  87
  88    util_snprintf(buffer, sizeof(buffer), "i915 (chipset: %s)", chipset);
  89    return buffer;
  90 }
  91
  92 static int
  93 i915_get_param(struct pipe_screen *screen, int param)
  94 {
  95    switch (param) {
  96    case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
  97       return 8;
  98    case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
  99       return 0;
 100    case PIPE_CAP_MAX_COMBINED_SAMPLERS:
 101       return 8;
 102    case PIPE_CAP_NPOT_TEXTURES:
 103       return 1;
 104    case PIPE_CAP_TWO_SIDED_STENCIL:
 105       return 1;
 106    case PIPE_CAP_GLSL:
 107       return 0;
 108    case PIPE_CAP_ANISOTROPIC_FILTER:
 109       return 0;
 110    case PIPE_CAP_POINT_SPRITE:
 111       return 0;
 112    case PIPE_CAP_MAX_RENDER_TARGETS:
 113       return 1;
 114    case PIPE_CAP_OCCLUSION_QUERY:
 115       return 0;
 116    case PIPE_CAP_TEXTURE_SHADOW_MAP:
 117       return 1;
 118    case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 119       return I915_MAX_TEXTURE_2D_LEVELS;
 120    case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 121       return I915_MAX_TEXTURE_3D_LEVELS;
 122    case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 123       return I915_MAX_TEXTURE_2D_LEVELS;
 124    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 125    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 126       return 1;
 127    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 128    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 129       return 0;
 130    default:
 131       return 0;
 132    }
 133 }
 134
 135 static float
 136 i915_get_paramf(struct pipe_screen *screen, int param)
 137 {
 138    switch (param) {
 139    case PIPE_CAP_MAX_LINE_WIDTH:
 140       /* fall-through */
 141    case PIPE_CAP_MAX_LINE_WIDTH_AA:
 142       return 7.5;
 143
 144    case PIPE_CAP_MAX_POINT_WIDTH:
 145       /* fall-through */
 146    case PIPE_CAP_MAX_POINT_WIDTH_AA:
 147       return 255.0;
 148
 149    case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
 150       return 4.0;
 151
 152    case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
 153       return 16.0;
 154
 155    default:
 156       return 0;
 157    }
 158 }
 159
 160 static boolean
 161 i915_is_format_supported(struct pipe_screen *screen,
 162                          enum pipe_format format,
 163                          enum pipe_texture_target target,
 164                          unsigned tex_usage,
 165                          unsigned geom_flags)
 166 {
 167    static const enum pipe_format tex_supported[] = {
 168       PIPE_FORMAT_A8B8G8R8_UNORM,
 169       PIPE_FORMAT_B8G8R8A8_UNORM,
 170       PIPE_FORMAT_B5G6R5_UNORM,
 171       PIPE_FORMAT_L8_UNORM,
 172       PIPE_FORMAT_A8_UNORM,
 173       PIPE_FORMAT_I8_UNORM,
 174       PIPE_FORMAT_L8A8_UNORM,
 175       PIPE_FORMAT_UYVY,
 176       PIPE_FORMAT_YUYV,
 177       PIPE_FORMAT_Z24S8_UNORM,
 178       PIPE_FORMAT_NONE  /* list terminator */
 179    };
 180    static const enum pipe_format surface_supported[] = {
 181       PIPE_FORMAT_B8G8R8A8_UNORM,
 182       PIPE_FORMAT_B5G6R5_UNORM,
 183       PIPE_FORMAT_Z24S8_UNORM,
 184       PIPE_FORMAT_NONE  /* list terminator */
 185    };
 186    const enum pipe_format *list;
 187    uint i;
 188
 189    if(tex_usage & PIPE_TEXTURE_USAGE_RENDER_TARGET)
 190       list = surface_supported;
 191    else
 192       list = tex_supported;
 193
 194    for (i = 0; list[i] != PIPE_FORMAT_NONE; i++) {
 195       if (list[i] == format)
 196          return TRUE;
 197    }
 198
 199    return FALSE;
 200 }
 201
 202
 203 /*
 204  * Fence functions
 205  */
 206
 207
 208 static void
 209 i915_fence_reference(struct pipe_screen *screen,
 210                      struct pipe_fence_handle **ptr,
 211                      struct pipe_fence_handle *fence)
 212 {
 213    struct i915_screen *is = i915_screen(screen);
 214
 215    is->iws->fence_reference(is->iws, ptr, fence);
 216 }
 217
 218 static int
 219 i915_fence_signalled(struct pipe_screen *screen,
 220                      struct pipe_fence_handle *fence,
 221                      unsigned flags)
 222 {
 223    struct i915_screen *is = i915_screen(screen);
 224
 225    return is->iws->fence_signalled(is->iws, fence);
 226 }
 227
 228 static int
 229 i915_fence_finish(struct pipe_screen *screen,
 230                   struct pipe_fence_handle *fence,
 231                   unsigned flags)
 232 {
 233    struct i915_screen *is = i915_screen(screen);
 234
 235    return is->iws->fence_finish(is->iws, fence);
 236 }
 237
 238
 239 /*
 240  * Generic functions
 241  */
 242
 243
 244 static void
 245 i915_destroy_screen(struct pipe_screen *screen)
 246 {
 247    struct i915_screen *is = i915_screen(screen);
 248
 249    if (is->iws)
 250       is->iws->destroy(is->iws);
 251
 252    FREE(is);
 253 }
 254
 255 /**
 256  * Create a new i915_screen object
 257  */
 258 struct pipe_screen *
 259 i915_create_screen(struct intel_winsys *iws, uint pci_id)
 260 {
 261    struct i915_screen *is = CALLOC_STRUCT(i915_screen);
 262
 263    if (!is)
 264       return NULL;
 265
 266    switch (pci_id) {
 267    case PCI_CHIP_I915_G:
 268    case PCI_CHIP_I915_GM:
 269       is->is_i945 = FALSE;
 270       break;
 271
 272    case PCI_CHIP_I945_G:
 273    case PCI_CHIP_I945_GM:
 274    case PCI_CHIP_I945_GME:
 275    case PCI_CHIP_G33_G:
 276    case PCI_CHIP_Q33_G:
 277    case PCI_CHIP_Q35_G:
 278       is->is_i945 = TRUE;
 279       break;
 280
 281    default:
 282       debug_printf("%s: unknown pci id 0x%x, cannot create screen\n",
 283                    __FUNCTION__, pci_id);
 284       FREE(is);
 285       return NULL;
 286    }
 287
 288    is->pci_id = pci_id;
 289    is->iws = iws;
 290
 291    is->base.winsys = NULL;
 292
 293    is->base.destroy = i915_destroy_screen;
 294
 295    is->base.get_name = i915_get_name;
 296    is->base.get_vendor = i915_get_vendor;
 297    is->base.get_param = i915_get_param;
 298    is->base.get_paramf = i915_get_paramf;
 299    is->base.is_format_supported = i915_is_format_supported;
 300
 301    is->base.context_create = i915_create_context;
 302
 303    is->base.fence_reference = i915_fence_reference;
 304    is->base.fence_signalled = i915_fence_signalled;
 305    is->base.fence_finish = i915_fence_finish;
 306
 307    i915_init_screen_texture_functions(is);
 308    i915_init_screen_buffer_functions(is);
 309
 310    return &is->base;
 311 }