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_winsys.h"
  37 #include "lp_jit.h"
  38 #include "lp_screen.h"
  39 #include "lp_debug.h"
  40
  41 #ifdef DEBUG
  42 int LP_DEBUG = 0;
  43
  44 static const struct debug_named_value lp_debug_flags[] = {
  45    { "pipe",   DEBUG_PIPE },
  46    { "tgsi",   DEBUG_TGSI },
  47    { "tex",    DEBUG_TEX },
  48    { "asm",    DEBUG_ASM },
  49    { "setup",  DEBUG_SETUP },
  50    { "rast",   DEBUG_RAST },
  51    { "query",  DEBUG_QUERY },
  52    { "screen", DEBUG_SCREEN },
  53    { "jit",    DEBUG_JIT },
  54    {NULL, 0}
  55 };
  56 #endif
  57
  58
  59 static const char *
  60 llvmpipe_get_vendor(struct pipe_screen *screen)
  61 {
  62    return "VMware, Inc.";
  63 }
  64
  65
  66 static const char *
  67 llvmpipe_get_name(struct pipe_screen *screen)
  68 {
  69    return "llvmpipe";
  70 }
  71
  72
  73 static int
  74 llvmpipe_get_param(struct pipe_screen *screen, int param)
  75 {
  76    switch (param) {
  77    case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
  78       return PIPE_MAX_SAMPLERS;
  79    case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
  80       return PIPE_MAX_VERTEX_SAMPLERS;
  81    case PIPE_CAP_MAX_COMBINED_SAMPLERS:
  82       return PIPE_MAX_SAMPLERS + PIPE_MAX_VERTEX_SAMPLERS;
  83    case PIPE_CAP_NPOT_TEXTURES:
  84       return 1;
  85    case PIPE_CAP_TWO_SIDED_STENCIL:
  86       return 1;
  87    case PIPE_CAP_GLSL:
  88       return 1;
  89    case PIPE_CAP_ANISOTROPIC_FILTER:
  90       return 0;
  91    case PIPE_CAP_POINT_SPRITE:
  92       return 1;
  93    case PIPE_CAP_MAX_RENDER_TARGETS:
  94       return PIPE_MAX_COLOR_BUFS;
  95    case PIPE_CAP_OCCLUSION_QUERY:
  96       return 1;
  97    case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
  98       return 1;
  99    case PIPE_CAP_TEXTURE_MIRROR_REPEAT:
 100       return 1;
 101    case PIPE_CAP_TEXTURE_SHADOW_MAP:
 102       return 1;
 103    case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 104       return 13; /* max 4Kx4K */
 105    case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 106       return 9;  /* max 256x256x256 */
 107    case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 108       return 13; /* max 4Kx4K */
 109    case PIPE_CAP_TGSI_CONT_SUPPORTED:
 110       return 1;
 111    case PIPE_CAP_BLEND_EQUATION_SEPARATE:
 112       return 1;
 113    default:
 114       return 0;
 115    }
 116 }
 117
 118
 119 static float
 120 llvmpipe_get_paramf(struct pipe_screen *screen, int param)
 121 {
 122    switch (param) {
 123    case PIPE_CAP_MAX_LINE_WIDTH:
 124       /* fall-through */
 125    case PIPE_CAP_MAX_LINE_WIDTH_AA:
 126       return 255.0; /* arbitrary */
 127    case PIPE_CAP_MAX_POINT_WIDTH:
 128       /* fall-through */
 129    case PIPE_CAP_MAX_POINT_WIDTH_AA:
 130       return 255.0; /* arbitrary */
 131    case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
 132       return 16.0; /* not actually signficant at this time */
 133    case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
 134       return 16.0; /* arbitrary */
 135    default:
 136       return 0;
 137    }
 138 }
 139
 140
 141 /**
 142  * Query format support for creating a texture, drawing surface, etc.
 143  * \param format  the format to test
 144  * \param type  one of PIPE_TEXTURE, PIPE_SURFACE
 145  */
 146 static boolean
 147 llvmpipe_is_format_supported( struct pipe_screen *_screen,
 148                               enum pipe_format format,
 149                               enum pipe_texture_target target,
 150                               unsigned tex_usage,
 151                               unsigned geom_flags )
 152 {
 153    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 154    struct llvmpipe_winsys *winsys = screen->winsys;
 155    const struct util_format_description *format_desc;
 156
 157    format_desc = util_format_description(format);
 158    if(!format_desc)
 159       return FALSE;
 160
 161    assert(target == PIPE_TEXTURE_1D ||
 162           target == PIPE_TEXTURE_2D ||
 163           target == PIPE_TEXTURE_3D ||
 164           target == PIPE_TEXTURE_CUBE);
 165
 166    switch(format) {
 167    case PIPE_FORMAT_DXT1_RGB:
 168    case PIPE_FORMAT_DXT1_RGBA:
 169    case PIPE_FORMAT_DXT3_RGBA:
 170    case PIPE_FORMAT_DXT5_RGBA:
 171       return FALSE;
 172    default:
 173       break;
 174    }
 175
 176    if(tex_usage & PIPE_TEXTURE_USAGE_RENDER_TARGET) {
 177       if(format_desc->block.width != 1 ||
 178          format_desc->block.height != 1)
 179          return FALSE;
 180
 181       if(format_desc->layout != UTIL_FORMAT_LAYOUT_SCALAR &&
 182          format_desc->layout != UTIL_FORMAT_LAYOUT_ARITH &&
 183          format_desc->layout != UTIL_FORMAT_LAYOUT_ARRAY)
 184          return FALSE;
 185
 186       if(format_desc->colorspace != UTIL_FORMAT_COLORSPACE_RGB &&
 187          format_desc->colorspace != UTIL_FORMAT_COLORSPACE_SRGB)
 188          return FALSE;
 189    }
 190
 191    if(tex_usage & PIPE_TEXTURE_USAGE_DISPLAY_TARGET) {
 192       if(!winsys->is_displaytarget_format_supported(winsys, format))
 193          return FALSE;
 194    }
 195
 196    if(tex_usage & PIPE_TEXTURE_USAGE_DEPTH_STENCIL) {
 197       if(format_desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS)
 198          return FALSE;
 199
 200       /* FIXME: Temporary restriction. See lp_state_fs.c. */
 201       if(format_desc->block.bits != 32)
 202          return FALSE;
 203    }
 204
 205    /* FIXME: Temporary restrictions. See lp_bld_sample_soa.c */
 206    if(tex_usage & PIPE_TEXTURE_USAGE_SAMPLER) {
 207       if(format_desc->block.width != 1 ||
 208          format_desc->block.height != 1)
 209          return FALSE;
 210
 211       if(format_desc->layout != UTIL_FORMAT_LAYOUT_SCALAR &&
 212          format_desc->layout != UTIL_FORMAT_LAYOUT_ARITH &&
 213          format_desc->layout != UTIL_FORMAT_LAYOUT_ARRAY)
 214          return FALSE;
 215
 216       if(format_desc->colorspace != UTIL_FORMAT_COLORSPACE_RGB &&
 217          format_desc->colorspace != UTIL_FORMAT_COLORSPACE_SRGB &&
 218          format_desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS)
 219          return FALSE;
 220    }
 221
 222    return TRUE;
 223 }
 224
 225
 226 static struct pipe_buffer *
 227 llvmpipe_surface_buffer_create(struct pipe_screen *screen,
 228                                unsigned width, unsigned height,
 229                                enum pipe_format format,
 230                                unsigned tex_usage,
 231                                unsigned usage,
 232                                unsigned *stride)
 233 {
 234    /* This function should never be used */
 235    assert(0);
 236    return NULL;
 237 }
 238
 239
 240 static void
 241 llvmpipe_flush_frontbuffer(struct pipe_screen *_screen,
 242                            struct pipe_surface *surface,
 243                            void *context_private)
 244 {
 245    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 246    struct llvmpipe_winsys *winsys = screen->winsys;
 247    struct llvmpipe_texture *texture = llvmpipe_texture(surface->texture);
 248
 249    assert(texture->dt);
 250    if (texture->dt)
 251       winsys->displaytarget_display(winsys, texture->dt, context_private);
 252 }
 253
 254
 255 static void
 256 llvmpipe_destroy_screen( struct pipe_screen *_screen )
 257 {
 258    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 259    struct llvmpipe_winsys *winsys = screen->winsys;
 260
 261    lp_jit_screen_cleanup(screen);
 262
 263    if(winsys->destroy)
 264       winsys->destroy(winsys);
 265
 266    FREE(screen);
 267 }
 268
 269
 270
 271 /**
 272  * Create a new pipe_screen object
 273  * Note: we're not presently subclassing pipe_screen (no llvmpipe_screen).
 274  */
 275 struct pipe_screen *
 276 llvmpipe_create_screen(struct llvmpipe_winsys *winsys)
 277 {
 278    struct llvmpipe_screen *screen = CALLOC_STRUCT(llvmpipe_screen);
 279
 280 #ifdef DEBUG
 281    LP_DEBUG = debug_get_flags_option("LP_DEBUG", lp_debug_flags, 0 );
 282 #endif
 283
 284    if (!screen)
 285       return NULL;
 286
 287    screen->winsys = winsys;
 288
 289    screen->base.destroy = llvmpipe_destroy_screen;
 290
 291    screen->base.get_name = llvmpipe_get_name;
 292    screen->base.get_vendor = llvmpipe_get_vendor;
 293    screen->base.get_param = llvmpipe_get_param;
 294    screen->base.get_paramf = llvmpipe_get_paramf;
 295    screen->base.is_format_supported = llvmpipe_is_format_supported;
 296
 297    screen->base.surface_buffer_create = llvmpipe_surface_buffer_create;
 298    screen->base.flush_frontbuffer = llvmpipe_flush_frontbuffer;
 299
 300    llvmpipe_init_screen_texture_funcs(&screen->base);
 301    llvmpipe_init_screen_buffer_funcs(&screen->base);
 302
 303    lp_jit_screen_init(screen);
 304
 305    return &screen->base;
 306 }