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_fence.h"
  40 #include "sp_public.h"
  41
  42
  43 static const char *
  44 softpipe_get_vendor(struct pipe_screen *screen)
  45 {
  46    return "VMware, Inc.";
  47 }
  48
  49
  50 static const char *
  51 softpipe_get_name(struct pipe_screen *screen)
  52 {
  53    return "softpipe";
  54 }
  55
  56
  57 static int
  58 softpipe_get_param(struct pipe_screen *screen, int param)
  59 {
  60    switch (param) {
  61    case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
  62       return PIPE_MAX_SAMPLERS;
  63    case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
  64       return PIPE_MAX_VERTEX_SAMPLERS;
  65    case PIPE_CAP_MAX_COMBINED_SAMPLERS:
  66       return PIPE_MAX_SAMPLERS + PIPE_MAX_VERTEX_SAMPLERS;
  67    case PIPE_CAP_NPOT_TEXTURES:
  68       return 1;
  69    case PIPE_CAP_TWO_SIDED_STENCIL:
  70       return 1;
  71    case PIPE_CAP_GLSL:
  72       return 1;
  73    case PIPE_CAP_ANISOTROPIC_FILTER:
  74       return 0;
  75    case PIPE_CAP_POINT_SPRITE:
  76       return 1;
  77    case PIPE_CAP_MAX_RENDER_TARGETS:
  78       return PIPE_MAX_COLOR_BUFS;
  79    case PIPE_CAP_OCCLUSION_QUERY:
  80       return 1;
  81    case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
  82       return 1;
  83    case PIPE_CAP_TEXTURE_MIRROR_REPEAT:
  84       return 1;
  85    case PIPE_CAP_TEXTURE_SHADOW_MAP:
  86       return 1;
  87    case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
  88       return SP_MAX_TEXTURE_2D_LEVELS;
  89    case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
  90       return SP_MAX_TEXTURE_3D_LEVELS;
  91    case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
  92       return SP_MAX_TEXTURE_2D_LEVELS;
  93    case PIPE_CAP_TGSI_CONT_SUPPORTED:
  94       return 1;
  95    case PIPE_CAP_BLEND_EQUATION_SEPARATE:
  96       return 1;
  97    case PIPE_CAP_MAX_CONST_BUFFERS:
  98       return PIPE_MAX_CONSTANT_BUFFERS;
  99    case PIPE_CAP_MAX_CONST_BUFFER_SIZE:
 100       return 4096 * 4 * sizeof(float);
 101    case PIPE_CAP_INDEP_BLEND_ENABLE:
 102       return 1;
 103    case PIPE_CAP_INDEP_BLEND_FUNC:
 104       return 1;
 105    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 106    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 107    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 108    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 109       return 1;
 110    default:
 111       return 0;
 112    }
 113 }
 114
 115
 116 static float
 117 softpipe_get_paramf(struct pipe_screen *screen, int param)
 118 {
 119    switch (param) {
 120    case PIPE_CAP_MAX_LINE_WIDTH:
 121       /* fall-through */
 122    case PIPE_CAP_MAX_LINE_WIDTH_AA:
 123       return 255.0; /* arbitrary */
 124    case PIPE_CAP_MAX_POINT_WIDTH:
 125       /* fall-through */
 126    case PIPE_CAP_MAX_POINT_WIDTH_AA:
 127       return 255.0; /* arbitrary */
 128    case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
 129       return 16.0; /* not actually signficant at this time */
 130    case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
 131       return 16.0; /* arbitrary */
 132    default:
 133       return 0;
 134    }
 135 }
 136
 137
 138 /**
 139  * Query format support for creating a texture, drawing surface, etc.
 140  * \param format  the format to test
 141  * \param type  one of PIPE_TEXTURE, PIPE_SURFACE
 142  */
 143 static boolean
 144 softpipe_is_format_supported( struct pipe_screen *screen,
 145                               enum pipe_format format,
 146                               enum pipe_texture_target target,
 147                               unsigned tex_usage,
 148                               unsigned geom_flags )
 149 {
 150    struct sw_winsys *winsys = softpipe_screen(screen)->winsys;
 151
 152    assert(target == PIPE_TEXTURE_1D ||
 153           target == PIPE_TEXTURE_2D ||
 154           target == PIPE_TEXTURE_3D ||
 155           target == PIPE_TEXTURE_CUBE);
 156
 157    switch(format) {
 158    case PIPE_FORMAT_L16_UNORM:
 159    case PIPE_FORMAT_YUYV:
 160    case PIPE_FORMAT_UYVY:
 161    case PIPE_FORMAT_DXT1_RGB:
 162    case PIPE_FORMAT_DXT1_RGBA:
 163    case PIPE_FORMAT_DXT3_RGBA:
 164    case PIPE_FORMAT_DXT5_RGBA:
 165    case PIPE_FORMAT_Z32_FLOAT:
 166    case PIPE_FORMAT_R8G8_SNORM:
 167    case PIPE_FORMAT_R5SG5SB6U_NORM:
 168    case PIPE_FORMAT_R8SG8SB8UX8U_NORM:
 169    case PIPE_FORMAT_R8G8B8A8_SNORM:
 170    case PIPE_FORMAT_NONE:
 171       return FALSE;
 172    default:
 173       break;
 174    }
 175
 176    if(tex_usage & (PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
 177                    PIPE_TEXTURE_USAGE_SCANOUT |
 178                    PIPE_TEXTURE_USAGE_SHARED)) {
 179       if(!winsys->is_displaytarget_format_supported(winsys, tex_usage, format))
 180          return FALSE;
 181    }
 182
 183    /* XXX: this is often a lie.  Pull in logic from llvmpipe to fix.
 184     */
 185    return TRUE;
 186 }
 187
 188
 189 static void
 190 softpipe_destroy_screen( struct pipe_screen *screen )
 191 {
 192    struct softpipe_screen *sp_screen = softpipe_screen(screen);
 193    struct sw_winsys *winsys = sp_screen->winsys;
 194
 195    if(winsys->destroy)
 196       winsys->destroy(winsys);
 197
 198    FREE(screen);
 199 }
 200
 201
 202 /* This is often overriden by the co-state tracker.
 203  */
 204 static void
 205 softpipe_flush_frontbuffer(struct pipe_screen *_screen,
 206                            struct pipe_surface *surface,
 207                            void *context_private)
 208 {
 209    struct softpipe_screen *screen = softpipe_screen(_screen);
 210    struct sw_winsys *winsys = screen->winsys;
 211    struct softpipe_texture *texture = softpipe_texture(surface->texture);
 212
 213    assert(texture->dt);
 214    if (texture->dt)
 215       winsys->displaytarget_display(winsys, texture->dt, context_private);
 216 }
 217
 218 /**
 219  * Create a new pipe_screen object
 220  * Note: we're not presently subclassing pipe_screen (no softpipe_screen).
 221  */
 222 struct pipe_screen *
 223 softpipe_create_screen(struct sw_winsys *winsys)
 224 {
 225    struct softpipe_screen *screen = CALLOC_STRUCT(softpipe_screen);
 226
 227    if (!screen)
 228       return NULL;
 229
 230    screen->winsys = winsys;
 231
 232    screen->base.winsys = NULL;
 233    screen->base.destroy = softpipe_destroy_screen;
 234
 235    screen->base.get_name = softpipe_get_name;
 236    screen->base.get_vendor = softpipe_get_vendor;
 237    screen->base.get_param = softpipe_get_param;
 238    screen->base.get_paramf = softpipe_get_paramf;
 239    screen->base.is_format_supported = softpipe_is_format_supported;
 240    screen->base.context_create = softpipe_create_context;
 241    screen->base.flush_frontbuffer = softpipe_flush_frontbuffer;
 242
 243    softpipe_init_screen_texture_funcs(&screen->base);
 244    softpipe_init_screen_buffer_funcs(&screen->base);
 245    softpipe_init_screen_fence_funcs(&screen->base);
 246
 247    return &screen->base;
 248 }