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    case PIPE_CAP_INDEP_BLEND_ENABLE:
 119       return 0;
 120    case PIPE_CAP_INDEP_BLEND_FUNC:
 121       return 0;
 122    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 123    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 124       return 1;
 125    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 126    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 127       return 0;
 128    default:
 129       return 0;
 130    }
 131 }
 132
 133
 134 static float
 135 llvmpipe_get_paramf(struct pipe_screen *screen, int param)
 136 {
 137    switch (param) {
 138    case PIPE_CAP_MAX_LINE_WIDTH:
 139       /* fall-through */
 140    case PIPE_CAP_MAX_LINE_WIDTH_AA:
 141       return 255.0; /* arbitrary */
 142    case PIPE_CAP_MAX_POINT_WIDTH:
 143       /* fall-through */
 144    case PIPE_CAP_MAX_POINT_WIDTH_AA:
 145       return 255.0; /* arbitrary */
 146    case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
 147       return 16.0; /* not actually signficant at this time */
 148    case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
 149       return 16.0; /* arbitrary */
 150    default:
 151       return 0;
 152    }
 153 }
 154
 155
 156 /**
 157  * Query format support for creating a texture, drawing surface, etc.
 158  * \param format  the format to test
 159  * \param type  one of PIPE_TEXTURE, PIPE_SURFACE
 160  */
 161 static boolean
 162 llvmpipe_is_format_supported( struct pipe_screen *_screen,
 163                               enum pipe_format format,
 164                               enum pipe_texture_target target,
 165                               unsigned tex_usage,
 166                               unsigned geom_flags )
 167 {
 168    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 169    struct llvmpipe_winsys *winsys = screen->winsys;
 170    const struct util_format_description *format_desc;
 171
 172    format_desc = util_format_description(format);
 173    if(!format_desc)
 174       return FALSE;
 175
 176    assert(target == PIPE_TEXTURE_1D ||
 177           target == PIPE_TEXTURE_2D ||
 178           target == PIPE_TEXTURE_3D ||
 179           target == PIPE_TEXTURE_CUBE);
 180
 181    switch(format) {
 182    case PIPE_FORMAT_DXT1_RGB:
 183    case PIPE_FORMAT_DXT1_RGBA:
 184    case PIPE_FORMAT_DXT3_RGBA:
 185    case PIPE_FORMAT_DXT5_RGBA:
 186       return FALSE;
 187    default:
 188       break;
 189    }
 190
 191    if(tex_usage & PIPE_TEXTURE_USAGE_RENDER_TARGET) {
 192       if(format_desc->block.width != 1 ||
 193          format_desc->block.height != 1)
 194          return FALSE;
 195
 196       if(format_desc->layout != UTIL_FORMAT_LAYOUT_SCALAR &&
 197          format_desc->layout != UTIL_FORMAT_LAYOUT_ARITH &&
 198          format_desc->layout != UTIL_FORMAT_LAYOUT_ARRAY)
 199          return FALSE;
 200
 201       if(format_desc->colorspace != UTIL_FORMAT_COLORSPACE_RGB &&
 202          format_desc->colorspace != UTIL_FORMAT_COLORSPACE_SRGB)
 203          return FALSE;
 204    }
 205
 206    if(tex_usage & PIPE_TEXTURE_USAGE_DISPLAY_TARGET) {
 207       if(!winsys->is_displaytarget_format_supported(winsys, format))
 208          return FALSE;
 209    }
 210
 211    if(tex_usage & PIPE_TEXTURE_USAGE_DEPTH_STENCIL) {
 212       if(format_desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS)
 213          return FALSE;
 214
 215       /* FIXME: Temporary restriction. See lp_state_fs.c. */
 216       if(format_desc->block.bits != 32)
 217          return FALSE;
 218    }
 219
 220    /* FIXME: Temporary restrictions. See lp_bld_sample_soa.c */
 221    if(tex_usage & PIPE_TEXTURE_USAGE_SAMPLER) {
 222       if(format_desc->block.width != 1 ||
 223          format_desc->block.height != 1)
 224          return FALSE;
 225
 226       if(format_desc->layout != UTIL_FORMAT_LAYOUT_SCALAR &&
 227          format_desc->layout != UTIL_FORMAT_LAYOUT_ARITH &&
 228          format_desc->layout != UTIL_FORMAT_LAYOUT_ARRAY)
 229          return FALSE;
 230
 231       if(format_desc->colorspace != UTIL_FORMAT_COLORSPACE_RGB &&
 232          format_desc->colorspace != UTIL_FORMAT_COLORSPACE_SRGB &&
 233          format_desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS)
 234          return FALSE;
 235    }
 236
 237    return TRUE;
 238 }
 239
 240
 241 static struct pipe_buffer *
 242 llvmpipe_surface_buffer_create(struct pipe_screen *screen,
 243                                unsigned width, unsigned height,
 244                                enum pipe_format format,
 245                                unsigned tex_usage,
 246                                unsigned usage,
 247                                unsigned *stride)
 248 {
 249    /* This function should never be used */
 250    assert(0);
 251    return NULL;
 252 }
 253
 254
 255 static void
 256 llvmpipe_flush_frontbuffer(struct pipe_screen *_screen,
 257                            struct pipe_surface *surface,
 258                            void *context_private)
 259 {
 260    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 261    struct llvmpipe_winsys *winsys = screen->winsys;
 262    struct llvmpipe_texture *texture = llvmpipe_texture(surface->texture);
 263
 264    assert(texture->dt);
 265    if (texture->dt)
 266       winsys->displaytarget_display(winsys, texture->dt, context_private);
 267 }
 268
 269
 270 static void
 271 llvmpipe_destroy_screen( struct pipe_screen *_screen )
 272 {
 273    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 274    struct llvmpipe_winsys *winsys = screen->winsys;
 275
 276    lp_jit_screen_cleanup(screen);
 277
 278    if(winsys->destroy)
 279       winsys->destroy(winsys);
 280
 281    FREE(screen);
 282 }
 283
 284
 285
 286 /**
 287  * Create a new pipe_screen object
 288  * Note: we're not presently subclassing pipe_screen (no llvmpipe_screen).
 289  */
 290 struct pipe_screen *
 291 llvmpipe_create_screen(struct llvmpipe_winsys *winsys)
 292 {
 293    struct llvmpipe_screen *screen = CALLOC_STRUCT(llvmpipe_screen);
 294
 295 #ifdef DEBUG
 296    LP_DEBUG = debug_get_flags_option("LP_DEBUG", lp_debug_flags, 0 );
 297 #endif
 298
 299    if (!screen)
 300       return NULL;
 301
 302    screen->winsys = winsys;
 303
 304    screen->base.destroy = llvmpipe_destroy_screen;
 305
 306    screen->base.get_name = llvmpipe_get_name;
 307    screen->base.get_vendor = llvmpipe_get_vendor;
 308    screen->base.get_param = llvmpipe_get_param;
 309    screen->base.get_paramf = llvmpipe_get_paramf;
 310    screen->base.is_format_supported = llvmpipe_is_format_supported;
 311
 312    screen->base.surface_buffer_create = llvmpipe_surface_buffer_create;
 313    screen->base.flush_frontbuffer = llvmpipe_flush_frontbuffer;
 314
 315    llvmpipe_init_screen_texture_funcs(&screen->base);
 316    llvmpipe_init_screen_buffer_funcs(&screen->base);
 317    llvmpipe_init_screen_fence_funcs(&screen->base);
 318
 319    lp_jit_screen_init(screen);
 320
 321    return &screen->base;
 322 }