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_simple_screen.h"
  31 #include "pipe/internal/p_winsys_screen.h"
  32 #include "pipe/p_defines.h"
  33 #include "pipe/p_screen.h"
  34
  35 #include "lp_texture.h"
  36 #include "lp_buffer.h"
  37 #include "lp_winsys.h"
  38 #include "lp_jit.h"
  39 #include "lp_screen.h"
  40
  41
  42 static const char *
  43 llvmpipe_get_vendor(struct pipe_screen *screen)
  44 {
  45    return "VMware, Inc.";
  46 }
  47
  48
  49 static const char *
  50 llvmpipe_get_name(struct pipe_screen *screen)
  51 {
  52    return "llvmpipe";
  53 }
  54
  55
  56 static int
  57 llvmpipe_get_param(struct pipe_screen *screen, int param)
  58 {
  59    switch (param) {
  60    case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
  61       return PIPE_MAX_SAMPLERS;
  62    case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
  63       return PIPE_MAX_SAMPLERS;
  64    case PIPE_CAP_NPOT_TEXTURES:
  65       return 1;
  66    case PIPE_CAP_TWO_SIDED_STENCIL:
  67       return 1;
  68    case PIPE_CAP_GLSL:
  69       return 1;
  70    case PIPE_CAP_S3TC:
  71       return 0;
  72    case PIPE_CAP_ANISOTROPIC_FILTER:
  73       return 0;
  74    case PIPE_CAP_POINT_SPRITE:
  75       return 1;
  76    case PIPE_CAP_MAX_RENDER_TARGETS:
  77       return PIPE_MAX_COLOR_BUFS;
  78    case PIPE_CAP_OCCLUSION_QUERY:
  79       return 1;
  80    case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
  81       return 1;
  82    case PIPE_CAP_TEXTURE_MIRROR_REPEAT:
  83       return 1;
  84    case PIPE_CAP_TEXTURE_SHADOW_MAP:
  85       return 1;
  86    case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
  87       return 13; /* max 4Kx4K */
  88    case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
  89       return 8;  /* max 128x128x128 */
  90    case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
  91       return 13; /* max 4Kx4K */
  92    case PIPE_CAP_TGSI_CONT_SUPPORTED:
  93       return 1;
  94    case PIPE_CAP_BLEND_EQUATION_SEPARATE:
  95       return 1;
  96    default:
  97       return 0;
  98    }
  99 }
 100
 101
 102 static float
 103 llvmpipe_get_paramf(struct pipe_screen *screen, int param)
 104 {
 105    switch (param) {
 106    case PIPE_CAP_MAX_LINE_WIDTH:
 107       /* fall-through */
 108    case PIPE_CAP_MAX_LINE_WIDTH_AA:
 109       return 255.0; /* arbitrary */
 110    case PIPE_CAP_MAX_POINT_WIDTH:
 111       /* fall-through */
 112    case PIPE_CAP_MAX_POINT_WIDTH_AA:
 113       return 255.0; /* arbitrary */
 114    case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
 115       return 16.0; /* not actually signficant at this time */
 116    case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
 117       return 16.0; /* arbitrary */
 118    default:
 119       return 0;
 120    }
 121 }
 122
 123
 124 /**
 125  * Query format support for creating a texture, drawing surface, etc.
 126  * \param format  the format to test
 127  * \param type  one of PIPE_TEXTURE, PIPE_SURFACE
 128  */
 129 static boolean
 130 llvmpipe_is_format_supported( struct pipe_screen *_screen,
 131                               enum pipe_format format,
 132                               enum pipe_texture_target target,
 133                               unsigned tex_usage,
 134                               unsigned geom_flags )
 135 {
 136    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 137    struct llvmpipe_winsys *winsys = screen->winsys;
 138
 139    assert(target == PIPE_TEXTURE_1D ||
 140           target == PIPE_TEXTURE_2D ||
 141           target == PIPE_TEXTURE_3D ||
 142           target == PIPE_TEXTURE_CUBE);
 143
 144    if(format == PIPE_FORMAT_Z16_UNORM)
 145       return FALSE;
 146    if(format == PIPE_FORMAT_S8_UNORM)
 147       return FALSE;
 148
 149    switch(format) {
 150    case PIPE_FORMAT_DXT1_RGB:
 151    case PIPE_FORMAT_DXT1_RGBA:
 152    case PIPE_FORMAT_DXT3_RGBA:
 153    case PIPE_FORMAT_DXT5_RGBA:
 154       return FALSE;
 155    default:
 156       break;
 157    }
 158
 159    if(tex_usage & PIPE_TEXTURE_USAGE_DISPLAY_TARGET)
 160       return winsys->is_displaytarget_format_supported(winsys, format);
 161
 162    return TRUE;
 163 }
 164
 165
 166 static struct pipe_buffer *
 167 llvmpipe_surface_buffer_create(struct pipe_screen *screen,
 168                                unsigned width, unsigned height,
 169                                enum pipe_format format,
 170                                unsigned tex_usage,
 171                                unsigned usage,
 172                                unsigned *stride)
 173 {
 174    /* This function should never be used */
 175    assert(0);
 176    return NULL;
 177 }
 178
 179
 180 static void
 181 llvmpipe_flush_frontbuffer(struct pipe_screen *_screen,
 182                            struct pipe_surface *surface,
 183                            void *context_private)
 184 {
 185    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 186    struct llvmpipe_winsys *winsys = screen->winsys;
 187    struct llvmpipe_texture *texture = llvmpipe_texture(surface->texture);
 188
 189    assert(texture->dt);
 190    if (texture->dt)
 191       winsys->displaytarget_display(winsys, texture->dt, context_private);
 192 }
 193
 194
 195 static void
 196 llvmpipe_destroy_screen( struct pipe_screen *_screen )
 197 {
 198    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 199
 200    struct pipe_winsys *winsys = _screen->winsys;
 201
 202    lp_jit_screen_cleanup(screen);
 203
 204    if(winsys->destroy)
 205       winsys->destroy(winsys);
 206
 207    FREE(screen);
 208 }
 209
 210
 211
 212 /**
 213  * Create a new pipe_screen object
 214  * Note: we're not presently subclassing pipe_screen (no llvmpipe_screen).
 215  */
 216 struct pipe_screen *
 217 llvmpipe_create_screen(struct llvmpipe_winsys *winsys)
 218 {
 219    struct llvmpipe_screen *screen = CALLOC_STRUCT(llvmpipe_screen);
 220
 221    if (!screen)
 222       return NULL;
 223
 224    screen->winsys = winsys;
 225
 226    screen->base.destroy = llvmpipe_destroy_screen;
 227
 228    screen->base.get_name = llvmpipe_get_name;
 229    screen->base.get_vendor = llvmpipe_get_vendor;
 230    screen->base.get_param = llvmpipe_get_param;
 231    screen->base.get_paramf = llvmpipe_get_paramf;
 232    screen->base.is_format_supported = llvmpipe_is_format_supported;
 233
 234    screen->base.surface_buffer_create = llvmpipe_surface_buffer_create;
 235    screen->base.flush_frontbuffer = llvmpipe_flush_frontbuffer;
 236
 237    llvmpipe_init_screen_texture_funcs(&screen->base);
 238    llvmpipe_init_screen_buffer_funcs(&screen->base);
 239
 240    lp_jit_screen_init(screen);
 241
 242    return &screen->base;
 243 }