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 "pipe/p_defines.h"
  31 #include "pipe/p_screen.h"
  32
  33 #include "lp_texture.h"
  34 #include "lp_buffer.h"
  35 #include "lp_fence.h"
  36 #include "lp_winsys.h"
  37 #include "lp_jit.h"
  38 #include "lp_screen.h"
  39 #include "lp_debug.h"
  40
  41 #ifdef DEBUG
  42 int LP_DEBUG = 0;
  43
  44 static const struct debug_named_value lp_debug_flags[] = {
  45    { "pipe",   DEBUG_PIPE },
  46    { "tgsi",   DEBUG_TGSI },
  47    { "tex",    DEBUG_TEX },
  48    { "asm",    DEBUG_ASM },
  49    { "setup",  DEBUG_SETUP },
  50    { "rast",   DEBUG_RAST },
  51    { "query",  DEBUG_QUERY },
  52    { "screen", DEBUG_SCREEN },
  53    { "jit",    DEBUG_JIT },
  54    {NULL, 0}
  55 };
  56 #endif
  57
  58
  59 static const char *
  60 llvmpipe_get_vendor(struct pipe_screen *screen)
  61 {
  62    return "VMware, Inc.";
  63 }
  64
  65
  66 static const char *
  67 llvmpipe_get_name(struct pipe_screen *screen)
  68 {
  69    return "llvmpipe";
  70 }
  71
  72
  73 static int
  74 llvmpipe_get_param(struct pipe_screen *screen, int param)
  75 {
  76    switch (param) {
  77    case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
  78       return PIPE_MAX_SAMPLERS;
  79    case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
  80       return PIPE_MAX_SAMPLERS;
  81    case PIPE_CAP_NPOT_TEXTURES:
  82       return 1;
  83    case PIPE_CAP_TWO_SIDED_STENCIL:
  84       return 1;
  85    case PIPE_CAP_GLSL:
  86       return 1;
  87    case PIPE_CAP_ANISOTROPIC_FILTER:
  88       return 0;
  89    case PIPE_CAP_POINT_SPRITE:
  90       return 1;
  91    case PIPE_CAP_MAX_RENDER_TARGETS:
  92       return PIPE_MAX_COLOR_BUFS;
  93    case PIPE_CAP_OCCLUSION_QUERY:
  94       return 1;
  95    case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
  96       return 1;
  97    case PIPE_CAP_TEXTURE_MIRROR_REPEAT:
  98       return 1;
  99    case PIPE_CAP_TEXTURE_SHADOW_MAP:
 100       return 1;
 101    case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 102       return 13; /* max 4Kx4K */
 103    case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 104       return 9;  /* max 256x256x256 */
 105    case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 106       return 13; /* max 4Kx4K */
 107    case PIPE_CAP_TGSI_CONT_SUPPORTED:
 108       return 1;
 109    case PIPE_CAP_BLEND_EQUATION_SEPARATE:
 110       return 1;
 111    default:
 112       return 0;
 113    }
 114 }
 115
 116
 117 static float
 118 llvmpipe_get_paramf(struct pipe_screen *screen, int param)
 119 {
 120    switch (param) {
 121    case PIPE_CAP_MAX_LINE_WIDTH:
 122       /* fall-through */
 123    case PIPE_CAP_MAX_LINE_WIDTH_AA:
 124       return 255.0; /* arbitrary */
 125    case PIPE_CAP_MAX_POINT_WIDTH:
 126       /* fall-through */
 127    case PIPE_CAP_MAX_POINT_WIDTH_AA:
 128       return 255.0; /* arbitrary */
 129    case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
 130       return 16.0; /* not actually signficant at this time */
 131    case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
 132       return 16.0; /* arbitrary */
 133    default:
 134       return 0;
 135    }
 136 }
 137
 138
 139 /**
 140  * Query format support for creating a texture, drawing surface, etc.
 141  * \param format  the format to test
 142  * \param type  one of PIPE_TEXTURE, PIPE_SURFACE
 143  */
 144 static boolean
 145 llvmpipe_is_format_supported( struct pipe_screen *_screen,
 146                               enum pipe_format format,
 147                               enum pipe_texture_target target,
 148                               unsigned tex_usage,
 149                               unsigned geom_flags )
 150 {
 151    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 152    struct llvmpipe_winsys *winsys = screen->winsys;
 153
 154    assert(target == PIPE_TEXTURE_1D ||
 155           target == PIPE_TEXTURE_2D ||
 156           target == PIPE_TEXTURE_3D ||
 157           target == PIPE_TEXTURE_CUBE);
 158
 159    if(format == PIPE_FORMAT_Z16_UNORM)
 160       return FALSE;
 161    if(format == PIPE_FORMAT_S8_UNORM)
 162       return FALSE;
 163
 164    switch(format) {
 165    case PIPE_FORMAT_DXT1_RGB:
 166    case PIPE_FORMAT_DXT1_RGBA:
 167    case PIPE_FORMAT_DXT3_RGBA:
 168    case PIPE_FORMAT_DXT5_RGBA:
 169       return FALSE;
 170    default:
 171       break;
 172    }
 173
 174    if(tex_usage & PIPE_TEXTURE_USAGE_DISPLAY_TARGET)
 175       return winsys->is_displaytarget_format_supported(winsys, format);
 176
 177    return TRUE;
 178 }
 179
 180
 181 static struct pipe_buffer *
 182 llvmpipe_surface_buffer_create(struct pipe_screen *screen,
 183                                unsigned width, unsigned height,
 184                                enum pipe_format format,
 185                                unsigned tex_usage,
 186                                unsigned usage,
 187                                unsigned *stride)
 188 {
 189    /* This function should never be used */
 190    assert(0);
 191    return NULL;
 192 }
 193
 194
 195 static void
 196 llvmpipe_flush_frontbuffer(struct pipe_screen *_screen,
 197                            struct pipe_surface *surface,
 198                            void *context_private)
 199 {
 200    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 201    struct llvmpipe_winsys *winsys = screen->winsys;
 202    struct llvmpipe_texture *texture = llvmpipe_texture(surface->texture);
 203
 204    assert(texture->dt);
 205    if (texture->dt)
 206       winsys->displaytarget_display(winsys, texture->dt, context_private);
 207 }
 208
 209
 210 static void
 211 llvmpipe_destroy_screen( struct pipe_screen *_screen )
 212 {
 213    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 214    struct llvmpipe_winsys *winsys = screen->winsys;
 215
 216    lp_jit_screen_cleanup(screen);
 217
 218    if(winsys->destroy)
 219       winsys->destroy(winsys);
 220
 221    FREE(screen);
 222 }
 223
 224
 225
 226 /**
 227  * Create a new pipe_screen object
 228  * Note: we're not presently subclassing pipe_screen (no llvmpipe_screen).
 229  */
 230 struct pipe_screen *
 231 llvmpipe_create_screen(struct llvmpipe_winsys *winsys)
 232 {
 233    struct llvmpipe_screen *screen = CALLOC_STRUCT(llvmpipe_screen);
 234
 235 #ifdef DEBUG
 236    LP_DEBUG = debug_get_flags_option("LP_DEBUG", lp_debug_flags, 0 );
 237 #endif
 238
 239    if (!screen)
 240       return NULL;
 241
 242    screen->winsys = winsys;
 243
 244    screen->base.destroy = llvmpipe_destroy_screen;
 245
 246    screen->base.get_name = llvmpipe_get_name;
 247    screen->base.get_vendor = llvmpipe_get_vendor;
 248    screen->base.get_param = llvmpipe_get_param;
 249    screen->base.get_paramf = llvmpipe_get_paramf;
 250    screen->base.is_format_supported = llvmpipe_is_format_supported;
 251
 252    screen->base.surface_buffer_create = llvmpipe_surface_buffer_create;
 253    screen->base.flush_frontbuffer = llvmpipe_flush_frontbuffer;
 254
 255    llvmpipe_init_screen_texture_funcs(&screen->base);
 256    llvmpipe_init_screen_buffer_funcs(&screen->base);
 257    llvmpipe_init_screen_fence_funcs(&screen->base);
 258
 259    lp_jit_screen_init(screen);
 260
 261    return &screen->base;
 262 }