src/gallium/drivers/softpipe/sp_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 "pipe/p_defines.h"
  31 #include "pipe/p_screen.h"
  32
  33 #include "state_tracker/sw_winsys.h"
  34
  35 #include "sp_texture.h"
  36 #include "sp_screen.h"
  37 #include "sp_context.h"
  38 #include "sp_buffer.h"
  39 #include "sp_public.h"
  40
  41
  42 static const char *
  43 softpipe_get_vendor(struct pipe_screen *screen)
  44 {
  45    return "VMware, Inc.";
  46 }
  47
  48
  49 static const char *
  50 softpipe_get_name(struct pipe_screen *screen)
  51 {
  52    return "softpipe";
  53 }
  54
  55
  56 static int
  57 softpipe_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_VERTEX_SAMPLERS;
  64    case PIPE_CAP_MAX_COMBINED_SAMPLERS:
  65       return PIPE_MAX_SAMPLERS + PIPE_MAX_VERTEX_SAMPLERS;
  66    case PIPE_CAP_NPOT_TEXTURES:
  67       return 1;
  68    case PIPE_CAP_TWO_SIDED_STENCIL:
  69       return 1;
  70    case PIPE_CAP_GLSL:
  71       return 1;
  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 SP_MAX_TEXTURE_2D_LEVELS;
  88    case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
  89       return SP_MAX_TEXTURE_3D_LEVELS;
  90    case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
  91       return SP_MAX_TEXTURE_2D_LEVELS;
  92    case PIPE_CAP_TGSI_CONT_SUPPORTED:
  93       return 1;
  94    case PIPE_CAP_BLEND_EQUATION_SEPARATE:
  95       return 1;
  96    case PIPE_CAP_MAX_CONST_BUFFERS:
  97       return PIPE_MAX_CONSTANT_BUFFERS;
  98    case PIPE_CAP_MAX_CONST_BUFFER_SIZE:
  99       return 4096 * 4 * sizeof(float);
 100    case PIPE_CAP_INDEP_BLEND_ENABLE:
 101       return 1;
 102    case PIPE_CAP_INDEP_BLEND_FUNC:
 103       return 1;
 104    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 105    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 106    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 107    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 108       return 1;
 109    default:
 110       return 0;
 111    }
 112 }
 113
 114
 115 static float
 116 softpipe_get_paramf(struct pipe_screen *screen, int param)
 117 {
 118    switch (param) {
 119    case PIPE_CAP_MAX_LINE_WIDTH:
 120       /* fall-through */
 121    case PIPE_CAP_MAX_LINE_WIDTH_AA:
 122       return 255.0; /* arbitrary */
 123    case PIPE_CAP_MAX_POINT_WIDTH:
 124       /* fall-through */
 125    case PIPE_CAP_MAX_POINT_WIDTH_AA:
 126       return 255.0; /* arbitrary */
 127    case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
 128       return 16.0; /* not actually signficant at this time */
 129    case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
 130       return 16.0; /* arbitrary */
 131    default:
 132       return 0;
 133    }
 134 }
 135
 136
 137 /**
 138  * Query format support for creating a texture, drawing surface, etc.
 139  * \param format  the format to test
 140  * \param type  one of PIPE_TEXTURE, PIPE_SURFACE
 141  */
 142 static boolean
 143 softpipe_is_format_supported( struct pipe_screen *screen,
 144                               enum pipe_format format,
 145                               enum pipe_texture_target target,
 146                               unsigned tex_usage,
 147                               unsigned geom_flags )
 148 {
 149    struct sw_winsys *winsys = softpipe_screen(screen)->winsys;
 150
 151    assert(target == PIPE_TEXTURE_1D ||
 152           target == PIPE_TEXTURE_2D ||
 153           target == PIPE_TEXTURE_3D ||
 154           target == PIPE_TEXTURE_CUBE);
 155
 156    switch(format) {
 157    case PIPE_FORMAT_L16_UNORM:
 158    case PIPE_FORMAT_YUYV:
 159    case PIPE_FORMAT_UYVY:
 160    case PIPE_FORMAT_DXT1_RGB:
 161    case PIPE_FORMAT_DXT1_RGBA:
 162    case PIPE_FORMAT_DXT3_RGBA:
 163    case PIPE_FORMAT_DXT5_RGBA:
 164    case PIPE_FORMAT_Z32_FLOAT:
 165    case PIPE_FORMAT_R8G8_SNORM:
 166    case PIPE_FORMAT_R5SG5SB6U_NORM:
 167    case PIPE_FORMAT_R8SG8SB8UX8U_NORM:
 168    case PIPE_FORMAT_R8G8B8A8_SNORM:
 169    case PIPE_FORMAT_NONE:
 170       return FALSE;
 171    default:
 172       break;
 173    }
 174
 175    if(tex_usage & PIPE_TEXTURE_USAGE_DISPLAY_TARGET) {
 176       if(!winsys->is_displaytarget_format_supported(winsys, format))
 177          return FALSE;
 178    }
 179
 180    /* XXX: this is often a lie.  Pull in logic from llvmpipe to fix.
 181     */
 182    return TRUE;
 183 }
 184
 185
 186 static void
 187 softpipe_destroy_screen( struct pipe_screen *screen )
 188 {
 189    struct softpipe_screen *sp_screen = softpipe_screen(screen);
 190    struct sw_winsys *winsys = sp_screen->winsys;
 191
 192    if(winsys->destroy)
 193       winsys->destroy(winsys);
 194
 195    FREE(screen);
 196 }
 197
 198
 199 /* This is often overriden by the co-state tracker.
 200  */
 201 static void
 202 softpipe_flush_frontbuffer(struct pipe_screen *_screen,
 203                            struct pipe_surface *surface,
 204                            void *context_private)
 205 {
 206    struct softpipe_screen *screen = softpipe_screen(_screen);
 207    struct sw_winsys *winsys = screen->winsys;
 208    struct softpipe_texture *texture = softpipe_texture(surface->texture);
 209
 210    assert(texture->dt);
 211    if (texture->dt)
 212       winsys->displaytarget_display(winsys, texture->dt, context_private);
 213 }
 214
 215 /**
 216  * Create a new pipe_screen object
 217  * Note: we're not presently subclassing pipe_screen (no softpipe_screen).
 218  */
 219 struct pipe_screen *
 220 softpipe_create_screen(struct sw_winsys *winsys)
 221 {
 222    struct softpipe_screen *screen = CALLOC_STRUCT(softpipe_screen);
 223
 224    if (!screen)
 225       return NULL;
 226
 227    screen->winsys = winsys;
 228
 229    screen->base.winsys = NULL;
 230    screen->base.destroy = softpipe_destroy_screen;
 231
 232    screen->base.get_name = softpipe_get_name;
 233    screen->base.get_vendor = softpipe_get_vendor;
 234    screen->base.get_param = softpipe_get_param;
 235    screen->base.get_paramf = softpipe_get_paramf;
 236    screen->base.is_format_supported = softpipe_is_format_supported;
 237    screen->base.context_create = softpipe_create_context;
 238    screen->base.flush_frontbuffer = softpipe_flush_frontbuffer;
 239
 240    softpipe_init_screen_texture_funcs(&screen->base);
 241    softpipe_init_screen_buffer_funcs(&screen->base);
 242
 243    return &screen->base;
 244 }