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