src/gallium/drivers/nv20/nv20_screen.c

   1 #include "pipe/p_screen.h"
   2
   3 #include "nv20_context.h"
   4 #include "nv20_screen.h"
   5
   6 static const char *
   7 nv20_screen_get_name(struct pipe_screen *screen)
   8 {
   9         struct nv20_screen *nv20screen = nv20_screen(screen);
  10         struct nouveau_device *dev = nv20screen->nvws->channel->device;
  11         static char buffer[128];
  12
  13         snprintf(buffer, sizeof(buffer), "NV%02X", dev->chipset);
  14         return buffer;
  15 }
  16
  17 static const char *
  18 nv20_screen_get_vendor(struct pipe_screen *screen)
  19 {
  20         return "nouveau";
  21 }
  22
  23 static int
  24 nv20_screen_get_param(struct pipe_screen *screen, int param)
  25 {
  26         switch (param) {
  27         case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
  28                 return 2;
  29         case PIPE_CAP_NPOT_TEXTURES:
  30                 return 0;
  31         case PIPE_CAP_TWO_SIDED_STENCIL:
  32                 return 0;
  33         case PIPE_CAP_GLSL:
  34                 return 0;
  35         case PIPE_CAP_S3TC:
  36                 return 0;
  37         case PIPE_CAP_ANISOTROPIC_FILTER:
  38                 return 1;
  39         case PIPE_CAP_POINT_SPRITE:
  40                 return 0;
  41         case PIPE_CAP_MAX_RENDER_TARGETS:
  42                 return 1;
  43         case PIPE_CAP_OCCLUSION_QUERY:
  44                 return 0;
  45         case PIPE_CAP_TEXTURE_SHADOW_MAP:
  46                 return 0;
  47         case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
  48                 return 12;
  49         case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
  50                 return 0;
  51         case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
  52                 return 12;
  53         case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
  54                 return 0;
  55         case NOUVEAU_CAP_HW_VTXBUF:
  56         case NOUVEAU_CAP_HW_IDXBUF:
  57                 return 0;
  58         default:
  59                 NOUVEAU_ERR("Unknown PIPE_CAP %d\n", param);
  60                 return 0;
  61         }
  62 }
  63
  64 static float
  65 nv20_screen_get_paramf(struct pipe_screen *screen, int param)
  66 {
  67         switch (param) {
  68         case PIPE_CAP_MAX_LINE_WIDTH:
  69         case PIPE_CAP_MAX_LINE_WIDTH_AA:
  70                 return 10.0;
  71         case PIPE_CAP_MAX_POINT_WIDTH:
  72         case PIPE_CAP_MAX_POINT_WIDTH_AA:
  73                 return 64.0;
  74         case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
  75                 return 2.0;
  76         case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
  77                 return 4.0;
  78         default:
  79                 NOUVEAU_ERR("Unknown PIPE_CAP %d\n", param);
  80                 return 0.0;
  81         }
  82 }
  83
  84 static boolean
  85 nv20_screen_is_format_supported(struct pipe_screen *screen,
  86                                 enum pipe_format format,
  87                                 enum pipe_texture_target target,
  88                                 unsigned tex_usage, unsigned geom_flags)
  89 {
  90         if (tex_usage & PIPE_TEXTURE_USAGE_RENDER_TARGET) {
  91                 switch (format) {
  92                 case PIPE_FORMAT_A8R8G8B8_UNORM:
  93                 case PIPE_FORMAT_R5G6B5_UNORM:
  94                 case PIPE_FORMAT_Z24S8_UNORM:
  95                 case PIPE_FORMAT_Z16_UNORM:
  96                         return TRUE;
  97                 default:
  98                         break;
  99                 }
 100         } else {
 101                 switch (format) {
 102                 case PIPE_FORMAT_A8R8G8B8_UNORM:
 103                 case PIPE_FORMAT_A1R5G5B5_UNORM:
 104                 case PIPE_FORMAT_A4R4G4B4_UNORM:
 105                 case PIPE_FORMAT_R5G6B5_UNORM:
 106                 case PIPE_FORMAT_L8_UNORM:
 107                 case PIPE_FORMAT_A8_UNORM:
 108                 case PIPE_FORMAT_I8_UNORM:
 109                         return TRUE;
 110                 default:
 111                         break;
 112                 }
 113         }
 114
 115         return FALSE;
 116 }
 117
 118 static void *
 119 nv20_surface_map(struct pipe_screen *screen, struct pipe_surface *surface,
 120                  unsigned flags )
 121 {
 122         struct pipe_winsys *ws = screen->winsys;
 123         void *map;
 124
 125         map = ws->buffer_map(ws, surface->buffer, flags);
 126         if (!map)
 127                 return NULL;
 128
 129         return map + surface->offset;
 130 }
 131
 132 static void
 133 nv20_surface_unmap(struct pipe_screen *screen, struct pipe_surface *surface)
 134 {
 135         struct pipe_winsys *ws = screen->winsys;
 136
 137         ws->buffer_unmap(ws, surface->buffer);
 138 }
 139
 140 static void
 141 nv20_screen_destroy(struct pipe_screen *pscreen)
 142 {
 143         struct nv20_screen *screen = nv20_screen(pscreen);
 144         struct nouveau_winsys *nvws = screen->nvws;
 145
 146         nvws->notifier_free(&screen->sync);
 147         nvws->grobj_free(&screen->kelvin);
 148
 149         FREE(pscreen);
 150 }
 151
 152 struct pipe_screen *
 153 nv20_screen_create(struct pipe_winsys *ws, struct nouveau_winsys *nvws)
 154 {
 155         struct nv20_screen *screen = CALLOC_STRUCT(nv20_screen);
 156         unsigned kelvin_class = 0;
 157         unsigned chipset = nvws->channel->device->chipset;
 158         int ret;
 159
 160         if (!screen)
 161                 return NULL;
 162         screen->nvws = nvws;
 163
 164         /* 3D object */
 165         if (chipset >= 0x25)
 166                 kelvin_class = NV25TCL;
 167         else if (chipset >= 0x20)
 168                 kelvin_class = NV20TCL;
 169
 170         if (!kelvin_class || chipset >= 0x30) {
 171                 NOUVEAU_ERR("Unknown nv2x chipset: nv%02x\n", chipset);
 172                 return NULL;
 173         }
 174
 175         ret = nvws->grobj_alloc(nvws, kelvin_class, &screen->kelvin);
 176         if (ret) {
 177                 NOUVEAU_ERR("Error creating 3D object: %d\n", ret);
 178                 return FALSE;
 179         }
 180
 181         /* Notifier for sync purposes */
 182         ret = nvws->notifier_alloc(nvws, 1, &screen->sync);
 183         if (ret) {
 184                 NOUVEAU_ERR("Error creating notifier object: %d\n", ret);
 185                 nv20_screen_destroy(&screen->pipe);
 186                 return NULL;
 187         }
 188
 189         screen->pipe.winsys = ws;
 190         screen->pipe.destroy = nv20_screen_destroy;
 191
 192         screen->pipe.get_name = nv20_screen_get_name;
 193         screen->pipe.get_vendor = nv20_screen_get_vendor;
 194         screen->pipe.get_param = nv20_screen_get_param;
 195         screen->pipe.get_paramf = nv20_screen_get_paramf;
 196
 197         screen->pipe.is_format_supported = nv20_screen_is_format_supported;
 198
 199         screen->pipe.surface_map = nv20_surface_map;
 200         screen->pipe.surface_unmap = nv20_surface_unmap;
 201
 202         nv20_screen_init_miptree_functions(&screen->pipe);
 203
 204         return &screen->pipe;
 205 }
 206