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    {NULL, 0}
  56 };
  57 #endif
  58
  59
  60 static const char *
  61 llvmpipe_get_vendor(struct pipe_screen *screen)
  62 {
  63    return "VMware, Inc.";
  64 }
  65
  66
  67 static const char *
  68 llvmpipe_get_name(struct pipe_screen *screen)
  69 {
  70    return "llvmpipe";
  71 }
  72
  73
  74 static int
  75 llvmpipe_get_param(struct pipe_screen *screen, int param)
  76 {
  77    switch (param) {
  78    case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
  79       return PIPE_MAX_SAMPLERS;
  80    case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
  81       return PIPE_MAX_VERTEX_SAMPLERS;
  82    case PIPE_CAP_MAX_COMBINED_SAMPLERS:
  83       return PIPE_MAX_SAMPLERS + PIPE_MAX_VERTEX_SAMPLERS;
  84    case PIPE_CAP_NPOT_TEXTURES:
  85       return 1;
  86    case PIPE_CAP_TWO_SIDED_STENCIL:
  87       return 1;
  88    case PIPE_CAP_GLSL:
  89       return 1;
  90    case PIPE_CAP_ANISOTROPIC_FILTER:
  91       return 0;
  92    case PIPE_CAP_POINT_SPRITE:
  93       return 1;
  94    case PIPE_CAP_MAX_RENDER_TARGETS:
  95       return PIPE_MAX_COLOR_BUFS;
  96    case PIPE_CAP_OCCLUSION_QUERY:
  97       return 1;
  98    case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
  99       return 1;
 100    case PIPE_CAP_TEXTURE_MIRROR_REPEAT:
 101       return 1;
 102    case PIPE_CAP_TEXTURE_SHADOW_MAP:
 103       return 1;
 104    case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 105       return 13; /* max 4Kx4K */
 106    case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 107       return 9;  /* max 256x256x256 */
 108    case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 109       return 13; /* max 4Kx4K */
 110    case PIPE_CAP_TGSI_CONT_SUPPORTED:
 111       return 1;
 112    case PIPE_CAP_BLEND_EQUATION_SEPARATE:
 113       return 1;
 114    default:
 115       return 0;
 116    }
 117 }
 118
 119
 120 static float
 121 llvmpipe_get_paramf(struct pipe_screen *screen, int param)
 122 {
 123    switch (param) {
 124    case PIPE_CAP_MAX_LINE_WIDTH:
 125       /* fall-through */
 126    case PIPE_CAP_MAX_LINE_WIDTH_AA:
 127       return 255.0; /* arbitrary */
 128    case PIPE_CAP_MAX_POINT_WIDTH:
 129       /* fall-through */
 130    case PIPE_CAP_MAX_POINT_WIDTH_AA:
 131       return 255.0; /* arbitrary */
 132    case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
 133       return 16.0; /* not actually signficant at this time */
 134    case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
 135       return 16.0; /* arbitrary */
 136    default:
 137       return 0;
 138    }
 139 }
 140
 141
 142 /**
 143  * Query format support for creating a texture, drawing surface, etc.
 144  * \param format  the format to test
 145  * \param type  one of PIPE_TEXTURE, PIPE_SURFACE
 146  */
 147 static boolean
 148 llvmpipe_is_format_supported( struct pipe_screen *_screen,
 149                               enum pipe_format format,
 150                               enum pipe_texture_target target,
 151                               unsigned tex_usage,
 152                               unsigned geom_flags )
 153 {
 154    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 155    struct llvmpipe_winsys *winsys = screen->winsys;
 156    const struct util_format_description *format_desc;
 157
 158    format_desc = util_format_description(format);
 159    if(!format_desc)
 160       return FALSE;
 161
 162    assert(target == PIPE_TEXTURE_1D ||
 163           target == PIPE_TEXTURE_2D ||
 164           target == PIPE_TEXTURE_3D ||
 165           target == PIPE_TEXTURE_CUBE);
 166
 167    switch(format) {
 168    case PIPE_FORMAT_DXT1_RGB:
 169    case PIPE_FORMAT_DXT1_RGBA:
 170    case PIPE_FORMAT_DXT3_RGBA:
 171    case PIPE_FORMAT_DXT5_RGBA:
 172       return FALSE;
 173    default:
 174       break;
 175    }
 176
 177    if(tex_usage & PIPE_TEXTURE_USAGE_RENDER_TARGET) {
 178       if(format_desc->block.width != 1 ||
 179          format_desc->block.height != 1)
 180          return FALSE;
 181
 182       if(format_desc->layout != UTIL_FORMAT_LAYOUT_SCALAR &&
 183          format_desc->layout != UTIL_FORMAT_LAYOUT_ARITH &&
 184          format_desc->layout != UTIL_FORMAT_LAYOUT_ARRAY)
 185          return FALSE;
 186
 187       if(format_desc->colorspace != UTIL_FORMAT_COLORSPACE_RGB &&
 188          format_desc->colorspace != UTIL_FORMAT_COLORSPACE_SRGB)
 189          return FALSE;
 190    }
 191
 192    if(tex_usage & PIPE_TEXTURE_USAGE_DISPLAY_TARGET) {
 193       if(!winsys->is_displaytarget_format_supported(winsys, format))
 194          return FALSE;
 195    }
 196
 197    if(tex_usage & PIPE_TEXTURE_USAGE_DEPTH_STENCIL) {
 198       if(format_desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS)
 199          return FALSE;
 200
 201       /* FIXME: Temporary restriction. See lp_state_fs.c. */
 202       if(format_desc->block.bits != 32)
 203          return FALSE;
 204    }
 205
 206    /* FIXME: Temporary restrictions. See lp_bld_sample_soa.c */
 207    if(tex_usage & PIPE_TEXTURE_USAGE_SAMPLER) {
 208       if(format_desc->block.width != 1 ||
 209          format_desc->block.height != 1)
 210          return FALSE;
 211
 212       if(format_desc->layout != UTIL_FORMAT_LAYOUT_SCALAR &&
 213          format_desc->layout != UTIL_FORMAT_LAYOUT_ARITH &&
 214          format_desc->layout != UTIL_FORMAT_LAYOUT_ARRAY)
 215          return FALSE;
 216
 217       if(format_desc->colorspace != UTIL_FORMAT_COLORSPACE_RGB &&
 218          format_desc->colorspace != UTIL_FORMAT_COLORSPACE_SRGB &&
 219          format_desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS)
 220          return FALSE;
 221    }
 222
 223    return TRUE;
 224 }
 225
 226
 227 static struct pipe_buffer *
 228 llvmpipe_surface_buffer_create(struct pipe_screen *screen,
 229                                unsigned width, unsigned height,
 230                                enum pipe_format format,
 231                                unsigned tex_usage,
 232                                unsigned usage,
 233                                unsigned *stride)
 234 {
 235    /* This function should never be used */
 236    assert(0);
 237    return NULL;
 238 }
 239
 240
 241 static void
 242 llvmpipe_flush_frontbuffer(struct pipe_screen *_screen,
 243                            struct pipe_surface *surface,
 244                            void *context_private)
 245 {
 246    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 247    struct llvmpipe_winsys *winsys = screen->winsys;
 248    struct llvmpipe_texture *texture = llvmpipe_texture(surface->texture);
 249
 250    assert(texture->dt);
 251    if (texture->dt)
 252       winsys->displaytarget_display(winsys, texture->dt, context_private);
 253 }
 254
 255
 256 static void
 257 llvmpipe_destroy_screen( struct pipe_screen *_screen )
 258 {
 259    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 260    struct llvmpipe_winsys *winsys = screen->winsys;
 261
 262    lp_jit_screen_cleanup(screen);
 263
 264    if(winsys->destroy)
 265       winsys->destroy(winsys);
 266
 267    FREE(screen);
 268 }
 269
 270
 271
 272 /**
 273  * Create a new pipe_screen object
 274  * Note: we're not presently subclassing pipe_screen (no llvmpipe_screen).
 275  */
 276 struct pipe_screen *
 277 llvmpipe_create_screen(struct llvmpipe_winsys *winsys)
 278 {
 279    struct llvmpipe_screen *screen = CALLOC_STRUCT(llvmpipe_screen);
 280
 281 #ifdef DEBUG
 282    LP_DEBUG = debug_get_flags_option("LP_DEBUG", lp_debug_flags, 0 );
 283 #endif
 284
 285    if (!screen)
 286       return NULL;
 287
 288    screen->winsys = winsys;
 289
 290    screen->base.destroy = llvmpipe_destroy_screen;
 291
 292    screen->base.get_name = llvmpipe_get_name;
 293    screen->base.get_vendor = llvmpipe_get_vendor;
 294    screen->base.get_param = llvmpipe_get_param;
 295    screen->base.get_paramf = llvmpipe_get_paramf;
 296    screen->base.is_format_supported = llvmpipe_is_format_supported;
 297
 298    screen->base.surface_buffer_create = llvmpipe_surface_buffer_create;
 299    screen->base.flush_frontbuffer = llvmpipe_flush_frontbuffer;
 300
 301    llvmpipe_init_screen_texture_funcs(&screen->base);
 302    llvmpipe_init_screen_buffer_funcs(&screen->base);
 303    llvmpipe_init_screen_fence_funcs(&screen->base);
 304
 305    lp_jit_screen_init(screen);
 306
 307    return &screen->base;
 308 }