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