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
  40
  41 static const char *
  42 softpipe_get_vendor(struct pipe_screen *screen)
  43 {
  44    return "VMware, Inc.";
  45 }
  46
  47
  48 static const char *
  49 softpipe_get_name(struct pipe_screen *screen)
  50 {
  51    return "softpipe";
  52 }
  53
  54
  55 static int
  56 softpipe_get_param(struct pipe_screen *screen, int param)
  57 {
  58    switch (param) {
  59    case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
  60       return PIPE_MAX_SAMPLERS;
  61    case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
  62       return PIPE_MAX_VERTEX_SAMPLERS;
  63    case PIPE_CAP_MAX_COMBINED_SAMPLERS:
  64       return PIPE_MAX_SAMPLERS + PIPE_MAX_VERTEX_SAMPLERS;
  65    case PIPE_CAP_NPOT_TEXTURES:
  66       return 1;
  67    case PIPE_CAP_TWO_SIDED_STENCIL:
  68       return 1;
  69    case PIPE_CAP_GLSL:
  70       return 1;
  71    case PIPE_CAP_ANISOTROPIC_FILTER:
  72       return 0;
  73    case PIPE_CAP_POINT_SPRITE:
  74       return 1;
  75    case PIPE_CAP_MAX_RENDER_TARGETS:
  76       return PIPE_MAX_COLOR_BUFS;
  77    case PIPE_CAP_OCCLUSION_QUERY:
  78       return 1;
  79    case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
  80       return 1;
  81    case PIPE_CAP_TEXTURE_MIRROR_REPEAT:
  82       return 1;
  83    case PIPE_CAP_TEXTURE_SHADOW_MAP:
  84       return 1;
  85    case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
  86       return 13; /* max 4Kx4K */
  87    case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
  88       return 9;  /* max 256x256x256 */
  89    case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
  90       return 13; /* max 4Kx4K */
  91    case PIPE_CAP_TGSI_CONT_SUPPORTED:
  92       return 1;
  93    case PIPE_CAP_BLEND_EQUATION_SEPARATE:
  94       return 1;
  95    case PIPE_CAP_MAX_CONST_BUFFERS:
  96       return PIPE_MAX_CONSTANT_BUFFERS;
  97    case PIPE_CAP_MAX_CONST_BUFFER_SIZE:
  98       return 4096 * 4 * sizeof(float);
  99    case PIPE_CAP_INDEP_BLEND_ENABLE:
 100       return 1;
 101    case PIPE_CAP_INDEP_BLEND_FUNC:
 102       return 1;
 103    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 104    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 105    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 106    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 107       return 1;
 108    default:
 109       return 0;
 110    }
 111 }
 112
 113
 114 static float
 115 softpipe_get_paramf(struct pipe_screen *screen, int param)
 116 {
 117    switch (param) {
 118    case PIPE_CAP_MAX_LINE_WIDTH:
 119       /* fall-through */
 120    case PIPE_CAP_MAX_LINE_WIDTH_AA:
 121       return 255.0; /* arbitrary */
 122    case PIPE_CAP_MAX_POINT_WIDTH:
 123       /* fall-through */
 124    case PIPE_CAP_MAX_POINT_WIDTH_AA:
 125       return 255.0; /* arbitrary */
 126    case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
 127       return 16.0; /* not actually signficant at this time */
 128    case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
 129       return 16.0; /* arbitrary */
 130    default:
 131       return 0;
 132    }
 133 }
 134
 135
 136 /**
 137  * Query format support for creating a texture, drawing surface, etc.
 138  * \param format  the format to test
 139  * \param type  one of PIPE_TEXTURE, PIPE_SURFACE
 140  */
 141 static boolean
 142 softpipe_is_format_supported( struct pipe_screen *screen,
 143                               enum pipe_format format,
 144                               enum pipe_texture_target target,
 145                               unsigned tex_usage,
 146                               unsigned geom_flags )
 147 {
 148    struct sw_winsys *winsys = softpipe_screen(screen)->winsys;
 149
 150    assert(target == PIPE_TEXTURE_1D ||
 151           target == PIPE_TEXTURE_2D ||
 152           target == PIPE_TEXTURE_3D ||
 153           target == PIPE_TEXTURE_CUBE);
 154
 155    switch(format) {
 156    case PIPE_FORMAT_L16_UNORM:
 157    case PIPE_FORMAT_YUYV:
 158    case PIPE_FORMAT_UYVY:
 159    case PIPE_FORMAT_DXT1_RGB:
 160    case PIPE_FORMAT_DXT1_RGBA:
 161    case PIPE_FORMAT_DXT3_RGBA:
 162    case PIPE_FORMAT_DXT5_RGBA:
 163    case PIPE_FORMAT_Z32_FLOAT:
 164    case PIPE_FORMAT_R8G8_SNORM:
 165    case PIPE_FORMAT_R5SG5SB6U_NORM:
 166    case PIPE_FORMAT_R8SG8SB8UX8U_NORM:
 167    case PIPE_FORMAT_R8G8B8A8_SNORM:
 168    case PIPE_FORMAT_NONE:
 169       return FALSE;
 170    default:
 171       break;
 172    }
 173
 174    if(tex_usage & PIPE_TEXTURE_USAGE_DISPLAY_TARGET) {
 175       if(!winsys->is_displaytarget_format_supported(winsys, format))
 176          return FALSE;
 177    }
 178
 179    /* XXX: this is often a lie.  Pull in logic from llvmpipe to fix.
 180     */
 181    return TRUE;
 182 }
 183
 184
 185 static void
 186 softpipe_destroy_screen( struct pipe_screen *screen )
 187 {
 188    struct softpipe_screen *sp_screen = softpipe_screen(screen);
 189    struct sw_winsys *winsys = sp_screen->winsys;
 190
 191    if(winsys->destroy)
 192       winsys->destroy(winsys);
 193
 194    FREE(screen);
 195 }
 196
 197
 198 /* This is often overriden by the co-state tracker.
 199  */
 200 static void
 201 softpipe_flush_frontbuffer(struct pipe_screen *_screen,
 202                            struct pipe_surface *surface,
 203                            void *context_private)
 204 {
 205    struct softpipe_screen *screen = softpipe_screen(_screen);
 206    struct sw_winsys *winsys = screen->winsys;
 207    struct softpipe_texture *texture = softpipe_texture(surface->texture);
 208
 209    assert(texture->dt);
 210    if (texture->dt)
 211       winsys->displaytarget_display(winsys, texture->dt, context_private);
 212 }
 213
 214 /**
 215  * Create a new pipe_screen object
 216  * Note: we're not presently subclassing pipe_screen (no softpipe_screen).
 217  */
 218 struct pipe_screen *
 219 softpipe_create_screen(struct sw_winsys *winsys)
 220 {
 221    struct softpipe_screen *screen = CALLOC_STRUCT(softpipe_screen);
 222
 223    if (!screen)
 224       return NULL;
 225
 226    screen->winsys = winsys;
 227
 228    screen->base.winsys = NULL;
 229    screen->base.destroy = softpipe_destroy_screen;
 230
 231    screen->base.get_name = softpipe_get_name;
 232    screen->base.get_vendor = softpipe_get_vendor;
 233    screen->base.get_param = softpipe_get_param;
 234    screen->base.get_paramf = softpipe_get_paramf;
 235    screen->base.is_format_supported = softpipe_is_format_supported;
 236    screen->base.context_create = softpipe_create_context;
 237    screen->base.flush_frontbuffer = softpipe_flush_frontbuffer;
 238
 239    softpipe_init_screen_texture_funcs(&screen->base);
 240    softpipe_init_screen_buffer_funcs(&screen->base);
 241
 242    return &screen->base;
 243 }