src/gallium/drivers/llvmpipe/lp_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_format.h"
  31 #include "pipe/p_defines.h"
  32 #include "pipe/p_screen.h"
  33
  34 #include "lp_texture.h"
  35 #include "lp_buffer.h"
  36 #include "lp_fence.h"
  37 #include "lp_winsys.h"
  38 #include "lp_jit.h"
  39 #include "lp_screen.h"
  40 #include "lp_context.h"
  41 #include "lp_debug.h"
  42
  43 #ifdef DEBUG
  44 int LP_DEBUG = 0;
  45
  46 static const struct debug_named_value lp_debug_flags[] = {
  47    { "pipe",   DEBUG_PIPE },
  48    { "tgsi",   DEBUG_TGSI },
  49    { "tex",    DEBUG_TEX },
  50    { "asm",    DEBUG_ASM },
  51    { "setup",  DEBUG_SETUP },
  52    { "rast",   DEBUG_RAST },
  53    { "query",  DEBUG_QUERY },
  54    { "screen", DEBUG_SCREEN },
  55    { "jit",    DEBUG_JIT },
  56    { "show_tiles",    DEBUG_SHOW_TILES },
  57    { "show_subtiles", DEBUG_SHOW_SUBTILES },
  58    { "counters", DEBUG_COUNTERS },
  59    { "nopt", DEBUG_NO_LLVM_OPT },
  60    {NULL, 0}
  61 };
  62 #endif
  63
  64
  65 static const char *
  66 llvmpipe_get_vendor(struct pipe_screen *screen)
  67 {
  68    return "VMware, Inc.";
  69 }
  70
  71
  72 static const char *
  73 llvmpipe_get_name(struct pipe_screen *screen)
  74 {
  75    return "llvmpipe";
  76 }
  77
  78
  79 static int
  80 llvmpipe_get_param(struct pipe_screen *screen, int param)
  81 {
  82    switch (param) {
  83    case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
  84       return PIPE_MAX_SAMPLERS;
  85    case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
  86       return 0;
  87    case PIPE_CAP_MAX_COMBINED_SAMPLERS:
  88       return PIPE_MAX_SAMPLERS + PIPE_MAX_VERTEX_SAMPLERS;
  89    case PIPE_CAP_NPOT_TEXTURES:
  90       return 1;
  91    case PIPE_CAP_TWO_SIDED_STENCIL:
  92       return 1;
  93    case PIPE_CAP_GLSL:
  94       return 1;
  95    case PIPE_CAP_ANISOTROPIC_FILTER:
  96       return 0;
  97    case PIPE_CAP_POINT_SPRITE:
  98       return 1;
  99    case PIPE_CAP_MAX_RENDER_TARGETS:
 100       return PIPE_MAX_COLOR_BUFS;
 101    case PIPE_CAP_OCCLUSION_QUERY:
 102       return 1;
 103    case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
 104       return 1;
 105    case PIPE_CAP_TEXTURE_MIRROR_REPEAT:
 106       return 1;
 107    case PIPE_CAP_TEXTURE_SHADOW_MAP:
 108       return 1;
 109    case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 110       return 13; /* max 4Kx4K */
 111    case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 112       return 9;  /* max 256x256x256 */
 113    case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 114       return 13; /* max 4Kx4K */
 115    case PIPE_CAP_TGSI_CONT_SUPPORTED:
 116       return 1;
 117    case PIPE_CAP_BLEND_EQUATION_SEPARATE:
 118       return 1;
 119    case PIPE_CAP_INDEP_BLEND_ENABLE:
 120       return 0;
 121    case PIPE_CAP_INDEP_BLEND_FUNC:
 122       return 0;
 123    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 124    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 125       return 1;
 126    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 127    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 128       return 0;
 129    default:
 130       return 0;
 131    }
 132 }
 133
 134
 135 static float
 136 llvmpipe_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 255.0; /* arbitrary */
 143    case PIPE_CAP_MAX_POINT_WIDTH:
 144       /* fall-through */
 145    case PIPE_CAP_MAX_POINT_WIDTH_AA:
 146       return 255.0; /* arbitrary */
 147    case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
 148       return 16.0; /* not actually signficant at this time */
 149    case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
 150       return 16.0; /* arbitrary */
 151    default:
 152       return 0;
 153    }
 154 }
 155
 156
 157 /**
 158  * Query format support for creating a texture, drawing surface, etc.
 159  * \param format  the format to test
 160  * \param type  one of PIPE_TEXTURE, PIPE_SURFACE
 161  */
 162 static boolean
 163 llvmpipe_is_format_supported( struct pipe_screen *_screen,
 164                               enum pipe_format format,
 165                               enum pipe_texture_target target,
 166                               unsigned tex_usage,
 167                               unsigned geom_flags )
 168 {
 169    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 170    struct llvmpipe_winsys *winsys = screen->winsys;
 171    const struct util_format_description *format_desc;
 172
 173    format_desc = util_format_description(format);
 174    if(!format_desc)
 175       return FALSE;
 176
 177    assert(target == PIPE_TEXTURE_1D ||
 178           target == PIPE_TEXTURE_2D ||
 179           target == PIPE_TEXTURE_3D ||
 180           target == PIPE_TEXTURE_CUBE);
 181
 182    switch(format) {
 183    case PIPE_FORMAT_DXT1_RGB:
 184    case PIPE_FORMAT_DXT1_RGBA:
 185    case PIPE_FORMAT_DXT3_RGBA:
 186    case PIPE_FORMAT_DXT5_RGBA:
 187       return FALSE;
 188    default:
 189       break;
 190    }
 191
 192    if(tex_usage & PIPE_TEXTURE_USAGE_RENDER_TARGET) {
 193       if(format_desc->block.width != 1 ||
 194          format_desc->block.height != 1)
 195          return FALSE;
 196
 197       if(format_desc->layout != UTIL_FORMAT_LAYOUT_PLAIN)
 198          return FALSE;
 199
 200       if(format_desc->colorspace != UTIL_FORMAT_COLORSPACE_RGB &&
 201          format_desc->colorspace != UTIL_FORMAT_COLORSPACE_SRGB)
 202          return FALSE;
 203    }
 204
 205    if(tex_usage & PIPE_TEXTURE_USAGE_DISPLAY_TARGET) {
 206       if(!winsys->is_displaytarget_format_supported(winsys, format))
 207          return FALSE;
 208    }
 209
 210    if(tex_usage & PIPE_TEXTURE_USAGE_DEPTH_STENCIL) {
 211       if(format_desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS)
 212          return FALSE;
 213
 214       /* FIXME: Temporary restriction. See lp_state_fs.c. */
 215       if(format_desc->block.bits != 32)
 216          return FALSE;
 217    }
 218
 219    /* FIXME: Temporary restrictions. See lp_bld_sample_soa.c */
 220    if(tex_usage & PIPE_TEXTURE_USAGE_SAMPLER) {
 221       if(format_desc->block.width != 1 ||
 222          format_desc->block.height != 1)
 223          return FALSE;
 224
 225       if(format_desc->layout != UTIL_FORMAT_LAYOUT_PLAIN)
 226          return FALSE;
 227
 228       if(format_desc->colorspace != UTIL_FORMAT_COLORSPACE_RGB &&
 229          format_desc->colorspace != UTIL_FORMAT_COLORSPACE_SRGB &&
 230          format_desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS)
 231          return FALSE;
 232
 233       /* not supported yet */
 234       if (format == PIPE_FORMAT_Z16_UNORM)
 235          return FALSE;
 236    }
 237
 238    return TRUE;
 239 }
 240
 241
 242 static struct pipe_buffer *
 243 llvmpipe_surface_buffer_create(struct pipe_screen *screen,
 244                                unsigned width, unsigned height,
 245                                enum pipe_format format,
 246                                unsigned tex_usage,
 247                                unsigned usage,
 248                                unsigned *stride)
 249 {
 250    /* This function should never be used */
 251    assert(0);
 252    return NULL;
 253 }
 254
 255
 256 static void
 257 llvmpipe_flush_frontbuffer(struct pipe_screen *_screen,
 258                            struct pipe_surface *surface,
 259                            void *context_private)
 260 {
 261    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 262    struct llvmpipe_winsys *winsys = screen->winsys;
 263    struct llvmpipe_texture *texture = llvmpipe_texture(surface->texture);
 264
 265    assert(texture->dt);
 266    if (texture->dt)
 267       winsys->displaytarget_display(winsys, texture->dt, context_private);
 268 }
 269
 270
 271 static void
 272 llvmpipe_destroy_screen( struct pipe_screen *_screen )
 273 {
 274    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 275    struct llvmpipe_winsys *winsys = screen->winsys;
 276
 277    lp_jit_screen_cleanup(screen);
 278
 279    if(winsys->destroy)
 280       winsys->destroy(winsys);
 281
 282    FREE(screen);
 283 }
 284
 285
 286
 287 /**
 288  * Create a new pipe_screen object
 289  * Note: we're not presently subclassing pipe_screen (no llvmpipe_screen).
 290  */
 291 struct pipe_screen *
 292 llvmpipe_create_screen(struct llvmpipe_winsys *winsys)
 293 {
 294    struct llvmpipe_screen *screen = CALLOC_STRUCT(llvmpipe_screen);
 295
 296 #ifdef DEBUG
 297    LP_DEBUG = debug_get_flags_option("LP_DEBUG", lp_debug_flags, 0 );
 298 #endif
 299
 300    if (!screen)
 301       return NULL;
 302
 303    screen->winsys = winsys;
 304
 305    screen->base.destroy = llvmpipe_destroy_screen;
 306
 307    screen->base.get_name = llvmpipe_get_name;
 308    screen->base.get_vendor = llvmpipe_get_vendor;
 309    screen->base.get_param = llvmpipe_get_param;
 310    screen->base.get_paramf = llvmpipe_get_paramf;
 311    screen->base.is_format_supported = llvmpipe_is_format_supported;
 312
 313    screen->base.surface_buffer_create = llvmpipe_surface_buffer_create;
 314    screen->base.context_create = llvmpipe_create_context;
 315    screen->base.flush_frontbuffer = llvmpipe_flush_frontbuffer;
 316
 317    llvmpipe_init_screen_texture_funcs(&screen->base);
 318    llvmpipe_init_screen_buffer_funcs(&screen->base);
 319    llvmpipe_init_screen_fence_funcs(&screen->base);
 320
 321    lp_jit_screen_init(screen);
 322
 323    return &screen->base;
 324 }