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_debug.h"
  41
  42 #ifdef DEBUG
  43 int LP_DEBUG = 0;
  44
  45 static const struct debug_named_value lp_debug_flags[] = {
  46    { "pipe",   DEBUG_PIPE },
  47    { "tgsi",   DEBUG_TGSI },
  48    { "tex",    DEBUG_TEX },
  49    { "asm",    DEBUG_ASM },
  50    { "setup",  DEBUG_SETUP },
  51    { "rast",   DEBUG_RAST },
  52    { "query",  DEBUG_QUERY },
  53    { "screen", DEBUG_SCREEN },
  54    { "jit",    DEBUG_JIT },
  55    { "show_tiles",    DEBUG_SHOW_TILES },
  56    { "show_subtiles", DEBUG_SHOW_SUBTILES },
  57    { "counters", DEBUG_COUNTERS },
  58    { "nopt", DEBUG_NO_LLVM_OPT },
  59    {NULL, 0}
  60 };
  61 #endif
  62
  63
  64 static const char *
  65 llvmpipe_get_vendor(struct pipe_screen *screen)
  66 {
  67    return "VMware, Inc.";
  68 }
  69
  70
  71 static const char *
  72 llvmpipe_get_name(struct pipe_screen *screen)
  73 {
  74    return "llvmpipe";
  75 }
  76
  77
  78 static int
  79 llvmpipe_get_param(struct pipe_screen *screen, int param)
  80 {
  81    switch (param) {
  82    case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
  83       return PIPE_MAX_SAMPLERS;
  84    case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
  85       return PIPE_MAX_VERTEX_SAMPLERS;
  86    case PIPE_CAP_MAX_COMBINED_SAMPLERS:
  87       return PIPE_MAX_SAMPLERS + PIPE_MAX_VERTEX_SAMPLERS;
  88    case PIPE_CAP_NPOT_TEXTURES:
  89       return 1;
  90    case PIPE_CAP_TWO_SIDED_STENCIL:
  91       return 1;
  92    case PIPE_CAP_GLSL:
  93       return 1;
  94    case PIPE_CAP_ANISOTROPIC_FILTER:
  95       return 0;
  96    case PIPE_CAP_POINT_SPRITE:
  97       return 1;
  98    case PIPE_CAP_MAX_RENDER_TARGETS:
  99       return PIPE_MAX_COLOR_BUFS;
 100    case PIPE_CAP_OCCLUSION_QUERY:
 101       return 1;
 102    case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
 103       return 1;
 104    case PIPE_CAP_TEXTURE_MIRROR_REPEAT:
 105       return 1;
 106    case PIPE_CAP_TEXTURE_SHADOW_MAP:
 107       return 1;
 108    case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 109       return 13; /* max 4Kx4K */
 110    case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 111       return 9;  /* max 256x256x256 */
 112    case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 113       return 13; /* max 4Kx4K */
 114    case PIPE_CAP_TGSI_CONT_SUPPORTED:
 115       return 1;
 116    case PIPE_CAP_BLEND_EQUATION_SEPARATE:
 117       return 1;
 118    default:
 119       return 0;
 120    }
 121 }
 122
 123
 124 static float
 125 llvmpipe_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 255.0; /* arbitrary */
 132    case PIPE_CAP_MAX_POINT_WIDTH:
 133       /* fall-through */
 134    case PIPE_CAP_MAX_POINT_WIDTH_AA:
 135       return 255.0; /* arbitrary */
 136    case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
 137       return 16.0; /* not actually signficant at this time */
 138    case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
 139       return 16.0; /* arbitrary */
 140    default:
 141       return 0;
 142    }
 143 }
 144
 145
 146 /**
 147  * Query format support for creating a texture, drawing surface, etc.
 148  * \param format  the format to test
 149  * \param type  one of PIPE_TEXTURE, PIPE_SURFACE
 150  */
 151 static boolean
 152 llvmpipe_is_format_supported( struct pipe_screen *_screen,
 153                               enum pipe_format format,
 154                               enum pipe_texture_target target,
 155                               unsigned tex_usage,
 156                               unsigned geom_flags )
 157 {
 158    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 159    struct llvmpipe_winsys *winsys = screen->winsys;
 160    const struct util_format_description *format_desc;
 161
 162    format_desc = util_format_description(format);
 163    if(!format_desc)
 164       return FALSE;
 165
 166    assert(target == PIPE_TEXTURE_1D ||
 167           target == PIPE_TEXTURE_2D ||
 168           target == PIPE_TEXTURE_3D ||
 169           target == PIPE_TEXTURE_CUBE);
 170
 171    switch(format) {
 172    case PIPE_FORMAT_DXT1_RGB:
 173    case PIPE_FORMAT_DXT1_RGBA:
 174    case PIPE_FORMAT_DXT3_RGBA:
 175    case PIPE_FORMAT_DXT5_RGBA:
 176       return FALSE;
 177    default:
 178       break;
 179    }
 180
 181    if(tex_usage & PIPE_TEXTURE_USAGE_RENDER_TARGET) {
 182       if(format_desc->block.width != 1 ||
 183          format_desc->block.height != 1)
 184          return FALSE;
 185
 186       if(format_desc->layout != UTIL_FORMAT_LAYOUT_SCALAR &&
 187          format_desc->layout != UTIL_FORMAT_LAYOUT_ARITH &&
 188          format_desc->layout != UTIL_FORMAT_LAYOUT_ARRAY)
 189          return FALSE;
 190
 191       if(format_desc->colorspace != UTIL_FORMAT_COLORSPACE_RGB &&
 192          format_desc->colorspace != UTIL_FORMAT_COLORSPACE_SRGB)
 193          return FALSE;
 194    }
 195
 196    if(tex_usage & PIPE_TEXTURE_USAGE_DISPLAY_TARGET) {
 197       if(!winsys->is_displaytarget_format_supported(winsys, format))
 198          return FALSE;
 199    }
 200
 201    if(tex_usage & PIPE_TEXTURE_USAGE_DEPTH_STENCIL) {
 202       if(format_desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS)
 203          return FALSE;
 204
 205       /* FIXME: Temporary restriction. See lp_state_fs.c. */
 206       if(format_desc->block.bits != 32)
 207          return FALSE;
 208    }
 209
 210    /* FIXME: Temporary restrictions. See lp_bld_sample_soa.c */
 211    if(tex_usage & PIPE_TEXTURE_USAGE_SAMPLER) {
 212       if(format_desc->block.width != 1 ||
 213          format_desc->block.height != 1)
 214          return FALSE;
 215
 216       if(format_desc->layout != UTIL_FORMAT_LAYOUT_SCALAR &&
 217          format_desc->layout != UTIL_FORMAT_LAYOUT_ARITH &&
 218          format_desc->layout != UTIL_FORMAT_LAYOUT_ARRAY)
 219          return FALSE;
 220
 221       if(format_desc->colorspace != UTIL_FORMAT_COLORSPACE_RGB &&
 222          format_desc->colorspace != UTIL_FORMAT_COLORSPACE_SRGB &&
 223          format_desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS)
 224          return FALSE;
 225    }
 226
 227    return TRUE;
 228 }
 229
 230
 231 static struct pipe_buffer *
 232 llvmpipe_surface_buffer_create(struct pipe_screen *screen,
 233                                unsigned width, unsigned height,
 234                                enum pipe_format format,
 235                                unsigned tex_usage,
 236                                unsigned usage,
 237                                unsigned *stride)
 238 {
 239    /* This function should never be used */
 240    assert(0);
 241    return NULL;
 242 }
 243
 244
 245 static void
 246 llvmpipe_flush_frontbuffer(struct pipe_screen *_screen,
 247                            struct pipe_surface *surface,
 248                            void *context_private)
 249 {
 250    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 251    struct llvmpipe_winsys *winsys = screen->winsys;
 252    struct llvmpipe_texture *texture = llvmpipe_texture(surface->texture);
 253
 254    assert(texture->dt);
 255    if (texture->dt)
 256       winsys->displaytarget_display(winsys, texture->dt, context_private);
 257 }
 258
 259
 260 static void
 261 llvmpipe_destroy_screen( struct pipe_screen *_screen )
 262 {
 263    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 264    struct llvmpipe_winsys *winsys = screen->winsys;
 265
 266    lp_jit_screen_cleanup(screen);
 267
 268    if(winsys->destroy)
 269       winsys->destroy(winsys);
 270
 271    FREE(screen);
 272 }
 273
 274
 275
 276 /**
 277  * Create a new pipe_screen object
 278  * Note: we're not presently subclassing pipe_screen (no llvmpipe_screen).
 279  */
 280 struct pipe_screen *
 281 llvmpipe_create_screen(struct llvmpipe_winsys *winsys)
 282 {
 283    struct llvmpipe_screen *screen = CALLOC_STRUCT(llvmpipe_screen);
 284
 285 #ifdef DEBUG
 286    LP_DEBUG = debug_get_flags_option("LP_DEBUG", lp_debug_flags, 0 );
 287 #endif
 288
 289    if (!screen)
 290       return NULL;
 291
 292    screen->winsys = winsys;
 293
 294    screen->base.destroy = llvmpipe_destroy_screen;
 295
 296    screen->base.get_name = llvmpipe_get_name;
 297    screen->base.get_vendor = llvmpipe_get_vendor;
 298    screen->base.get_param = llvmpipe_get_param;
 299    screen->base.get_paramf = llvmpipe_get_paramf;
 300    screen->base.is_format_supported = llvmpipe_is_format_supported;
 301
 302    screen->base.surface_buffer_create = llvmpipe_surface_buffer_create;
 303    screen->base.flush_frontbuffer = llvmpipe_flush_frontbuffer;
 304
 305    llvmpipe_init_screen_texture_funcs(&screen->base);
 306    llvmpipe_init_screen_buffer_funcs(&screen->base);
 307    llvmpipe_init_screen_fence_funcs(&screen->base);
 308
 309    lp_jit_screen_init(screen);
 310
 311    return &screen->base;
 312 }