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_jit.h"
  38 #include "lp_screen.h"
  39 #include "lp_context.h"
  40 #include "lp_debug.h"
  41 #include "lp_public.h"
  42
  43 #include "state_tracker/sw_winsys.h"
  44
  45 #ifdef DEBUG
  46 int LP_DEBUG = 0;
  47
  48 static const struct debug_named_value lp_debug_flags[] = {
  49    { "pipe",   DEBUG_PIPE },
  50    { "tgsi",   DEBUG_TGSI },
  51    { "tex",    DEBUG_TEX },
  52    { "asm",    DEBUG_ASM },
  53    { "setup",  DEBUG_SETUP },
  54    { "rast",   DEBUG_RAST },
  55    { "query",  DEBUG_QUERY },
  56    { "screen", DEBUG_SCREEN },
  57    { "jit",    DEBUG_JIT },
  58    { "show_tiles",    DEBUG_SHOW_TILES },
  59    { "show_subtiles", DEBUG_SHOW_SUBTILES },
  60    { "counters", DEBUG_COUNTERS },
  61    { "nopt", DEBUG_NO_LLVM_OPT },
  62    {NULL, 0}
  63 };
  64 #endif
  65
  66
  67 static const char *
  68 llvmpipe_get_vendor(struct pipe_screen *screen)
  69 {
  70    return "VMware, Inc.";
  71 }
  72
  73
  74 static const char *
  75 llvmpipe_get_name(struct pipe_screen *screen)
  76 {
  77    return "llvmpipe";
  78 }
  79
  80
  81 static int
  82 llvmpipe_get_param(struct pipe_screen *screen, int param)
  83 {
  84    switch (param) {
  85    case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
  86       return PIPE_MAX_SAMPLERS;
  87    case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
  88       return 0;
  89    case PIPE_CAP_MAX_COMBINED_SAMPLERS:
  90       return PIPE_MAX_SAMPLERS + PIPE_MAX_VERTEX_SAMPLERS;
  91    case PIPE_CAP_NPOT_TEXTURES:
  92       return 1;
  93    case PIPE_CAP_TWO_SIDED_STENCIL:
  94       return 1;
  95    case PIPE_CAP_GLSL:
  96       return 1;
  97    case PIPE_CAP_ANISOTROPIC_FILTER:
  98       return 0;
  99    case PIPE_CAP_POINT_SPRITE:
 100       return 1;
 101    case PIPE_CAP_MAX_RENDER_TARGETS:
 102       return PIPE_MAX_COLOR_BUFS;
 103    case PIPE_CAP_OCCLUSION_QUERY:
 104       return 1;
 105    case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
 106       return 1;
 107    case PIPE_CAP_TEXTURE_MIRROR_REPEAT:
 108       return 1;
 109    case PIPE_CAP_TEXTURE_SHADOW_MAP:
 110       return 1;
 111    case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 112       return LP_MAX_TEXTURE_2D_LEVELS;
 113    case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 114       return LP_MAX_TEXTURE_3D_LEVELS;
 115    case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 116       return LP_MAX_TEXTURE_2D_LEVELS;
 117    case PIPE_CAP_TGSI_CONT_SUPPORTED:
 118       return 1;
 119    case PIPE_CAP_BLEND_EQUATION_SEPARATE:
 120       return 1;
 121    case PIPE_CAP_INDEP_BLEND_ENABLE:
 122       return 0;
 123    case PIPE_CAP_INDEP_BLEND_FUNC:
 124       return 0;
 125    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 126    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 127       return 1;
 128    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 129    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 130       return 0;
 131    default:
 132       return 0;
 133    }
 134 }
 135
 136
 137 static float
 138 llvmpipe_get_paramf(struct pipe_screen *screen, int param)
 139 {
 140    switch (param) {
 141    case PIPE_CAP_MAX_LINE_WIDTH:
 142       /* fall-through */
 143    case PIPE_CAP_MAX_LINE_WIDTH_AA:
 144       return 255.0; /* arbitrary */
 145    case PIPE_CAP_MAX_POINT_WIDTH:
 146       /* fall-through */
 147    case PIPE_CAP_MAX_POINT_WIDTH_AA:
 148       return 255.0; /* arbitrary */
 149    case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
 150       return 16.0; /* not actually signficant at this time */
 151    case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
 152       return 16.0; /* arbitrary */
 153    default:
 154       return 0;
 155    }
 156 }
 157
 158
 159 /**
 160  * Query format support for creating a texture, drawing surface, etc.
 161  * \param format  the format to test
 162  * \param type  one of PIPE_TEXTURE, PIPE_SURFACE
 163  */
 164 static boolean
 165 llvmpipe_is_format_supported( struct pipe_screen *_screen,
 166                               enum pipe_format format,
 167                               enum pipe_texture_target target,
 168                               unsigned tex_usage,
 169                               unsigned geom_flags )
 170 {
 171    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 172    struct sw_winsys *winsys = screen->winsys;
 173    const struct util_format_description *format_desc;
 174
 175    format_desc = util_format_description(format);
 176    if(!format_desc)
 177       return FALSE;
 178
 179    assert(target == PIPE_TEXTURE_1D ||
 180           target == PIPE_TEXTURE_2D ||
 181           target == PIPE_TEXTURE_3D ||
 182           target == PIPE_TEXTURE_CUBE);
 183
 184    switch(format) {
 185    case PIPE_FORMAT_DXT1_RGB:
 186    case PIPE_FORMAT_DXT1_RGBA:
 187    case PIPE_FORMAT_DXT3_RGBA:
 188    case PIPE_FORMAT_DXT5_RGBA:
 189       return FALSE;
 190    default:
 191       break;
 192    }
 193
 194    if(tex_usage & PIPE_TEXTURE_USAGE_RENDER_TARGET) {
 195       if(format_desc->block.width != 1 ||
 196          format_desc->block.height != 1)
 197          return FALSE;
 198
 199       if(format_desc->layout != UTIL_FORMAT_LAYOUT_PLAIN)
 200          return FALSE;
 201
 202       if(format_desc->colorspace != UTIL_FORMAT_COLORSPACE_RGB &&
 203          format_desc->colorspace != UTIL_FORMAT_COLORSPACE_SRGB)
 204          return FALSE;
 205    }
 206
 207    if(tex_usage & PIPE_TEXTURE_USAGE_DISPLAY_TARGET) {
 208       if(!winsys->is_displaytarget_format_supported(winsys, format))
 209          return FALSE;
 210    }
 211
 212    if(tex_usage & PIPE_TEXTURE_USAGE_DEPTH_STENCIL) {
 213       if(format_desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS)
 214          return FALSE;
 215
 216       /* FIXME: Temporary restriction. See lp_state_fs.c. */
 217       if(format_desc->block.bits != 32)
 218          return FALSE;
 219    }
 220
 221    /* FIXME: Temporary restrictions. See lp_bld_sample_soa.c */
 222    if(tex_usage & PIPE_TEXTURE_USAGE_SAMPLER) {
 223       if(format_desc->block.width != 1 ||
 224          format_desc->block.height != 1)
 225          return FALSE;
 226
 227       if(format_desc->layout != UTIL_FORMAT_LAYOUT_PLAIN)
 228          return FALSE;
 229
 230       if(format_desc->colorspace != UTIL_FORMAT_COLORSPACE_RGB &&
 231          format_desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS)
 232          return FALSE;
 233
 234       /* not supported yet */
 235       if (format == PIPE_FORMAT_Z16_UNORM)
 236          return FALSE;
 237    }
 238
 239    return TRUE;
 240 }
 241
 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 sw_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 sw_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 sw_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.context_create = llvmpipe_create_context;
 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 }