src/gallium/winsys/gdi/gdi_softpipe_winsys.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2008 Tungsten Graphics, Inc., Bismarck, ND., USA
   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 SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  17  * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
  18  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  19  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  20  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  21  *
  22  * The above copyright notice and this permission notice (including the
  23  * next paragraph) shall be included in all copies or substantial portions
  24  * of the Software.
  25  *
  26  *
  27  **************************************************************************/
  28
  29 /**
  30  * @file
  31  * Softpipe support.
  32  *
  33  * @author Keith Whitwell
  34  * @author Brian Paul
  35  * @author Jose Fonseca
  36  */
  37
  38
  39 #include <windows.h>
  40
  41 #include "pipe/internal/p_winsys_screen.h"
  42 #include "pipe/p_format.h"
  43 #include "pipe/p_context.h"
  44 #include "pipe/p_inlines.h"
  45 #include "util/u_math.h"
  46 #include "util/u_memory.h"
  47 #include "softpipe/sp_winsys.h"
  48 #include "softpipe/sp_texture.h"
  49 #include "stw_winsys.h"
  50
  51
  52 struct gdi_softpipe_buffer
  53 {
  54    struct pipe_buffer base;
  55    boolean userBuffer;  /** Is this a user-space buffer? */
  56    void *data;
  57    void *mapped;
  58 };
  59
  60
  61 /** Cast wrapper */
  62 static INLINE struct gdi_softpipe_buffer *
  63 gdi_softpipe_buffer( struct pipe_buffer *buf )
  64 {
  65    return (struct gdi_softpipe_buffer *)buf;
  66 }
  67
  68
  69 static void *
  70 gdi_softpipe_buffer_map(struct pipe_winsys *winsys,
  71                         struct pipe_buffer *buf,
  72                         unsigned flags)
  73 {
  74    struct gdi_softpipe_buffer *gdi_softpipe_buf = gdi_softpipe_buffer(buf);
  75    gdi_softpipe_buf->mapped = gdi_softpipe_buf->data;
  76    return gdi_softpipe_buf->mapped;
  77 }
  78
  79
  80 static void
  81 gdi_softpipe_buffer_unmap(struct pipe_winsys *winsys,
  82                           struct pipe_buffer *buf)
  83 {
  84    struct gdi_softpipe_buffer *gdi_softpipe_buf = gdi_softpipe_buffer(buf);
  85    gdi_softpipe_buf->mapped = NULL;
  86 }
  87
  88
  89 static void
  90 gdi_softpipe_buffer_destroy(struct pipe_buffer *buf)
  91 {
  92    struct gdi_softpipe_buffer *oldBuf = gdi_softpipe_buffer(buf);
  93
  94    if (oldBuf->data) {
  95       if (!oldBuf->userBuffer)
  96          align_free(oldBuf->data);
  97
  98       oldBuf->data = NULL;
  99    }
 100
 101    FREE(oldBuf);
 102 }
 103
 104
 105 static const char *
 106 gdi_softpipe_get_name(struct pipe_winsys *winsys)
 107 {
 108    return "softpipe";
 109 }
 110
 111
 112 static struct pipe_buffer *
 113 gdi_softpipe_buffer_create(struct pipe_winsys *winsys,
 114                            unsigned alignment,
 115                            unsigned usage,
 116                            unsigned size)
 117 {
 118    struct gdi_softpipe_buffer *buffer = CALLOC_STRUCT(gdi_softpipe_buffer);
 119
 120    pipe_reference_init(&buffer->base.reference, 1);
 121    buffer->base.alignment = alignment;
 122    buffer->base.usage = usage;
 123    buffer->base.size = size;
 124
 125    buffer->data = align_malloc(size, alignment);
 126
 127    return &buffer->base;
 128 }
 129
 130
 131 /**
 132  * Create buffer which wraps user-space data.
 133  */
 134 static struct pipe_buffer *
 135 gdi_softpipe_user_buffer_create(struct pipe_winsys *winsys,
 136                                void *ptr,
 137                                unsigned bytes)
 138 {
 139    struct gdi_softpipe_buffer *buffer;
 140
 141    buffer = CALLOC_STRUCT(gdi_softpipe_buffer);
 142    if(!buffer)
 143       return NULL;
 144
 145    pipe_reference_init(&buffer->base.reference, 1);
 146    buffer->base.size = bytes;
 147    buffer->userBuffer = TRUE;
 148    buffer->data = ptr;
 149
 150    return &buffer->base;
 151 }
 152
 153
 154 /**
 155  * Round n up to next multiple.
 156  */
 157 static INLINE unsigned
 158 round_up(unsigned n, unsigned multiple)
 159 {
 160    return (n + multiple - 1) & ~(multiple - 1);
 161 }
 162
 163
 164 static struct pipe_buffer *
 165 gdi_softpipe_surface_buffer_create(struct pipe_winsys *winsys,
 166                                    unsigned width, unsigned height,
 167                                    enum pipe_format format,
 168                                    unsigned usage,
 169                                    unsigned tex_usage,
 170                                    unsigned *stride)
 171 {
 172    const unsigned alignment = 64;
 173    struct pipe_format_block block;
 174    unsigned nblocksx, nblocksy;
 175
 176    pf_get_block(format, &block);
 177    nblocksx = pf_get_nblocksx(&block, width);
 178    nblocksy = pf_get_nblocksy(&block, height);
 179    *stride = round_up(nblocksx * block.size, alignment);
 180
 181    return winsys->buffer_create(winsys, alignment,
 182                                 usage,
 183                                 *stride * nblocksy);
 184 }
 185
 186
 187 static void
 188 gdi_softpipe_dummy_flush_frontbuffer(struct pipe_winsys *winsys,
 189                                      struct pipe_surface *surface,
 190                                      void *context_private)
 191 {
 192    assert(0);
 193 }
 194
 195
 196 static void
 197 gdi_softpipe_fence_reference(struct pipe_winsys *winsys,
 198                              struct pipe_fence_handle **ptr,
 199                              struct pipe_fence_handle *fence)
 200 {
 201 }
 202
 203
 204 static int
 205 gdi_softpipe_fence_signalled(struct pipe_winsys *winsys,
 206                              struct pipe_fence_handle *fence,
 207                              unsigned flag)
 208 {
 209    return 0;
 210 }
 211
 212
 213 static int
 214 gdi_softpipe_fence_finish(struct pipe_winsys *winsys,
 215                           struct pipe_fence_handle *fence,
 216                           unsigned flag)
 217 {
 218    return 0;
 219 }
 220
 221
 222 static void
 223 gdi_softpipe_destroy(struct pipe_winsys *winsys)
 224 {
 225    FREE(winsys);
 226 }
 227
 228
 229 static struct pipe_screen *
 230 gdi_softpipe_screen_create(void)
 231 {
 232    static struct pipe_winsys *winsys;
 233    struct pipe_screen *screen;
 234
 235    winsys = CALLOC_STRUCT(pipe_winsys);
 236    if(!winsys)
 237       return NULL;
 238
 239    winsys->destroy = gdi_softpipe_destroy;
 240
 241    winsys->buffer_create = gdi_softpipe_buffer_create;
 242    winsys->user_buffer_create = gdi_softpipe_user_buffer_create;
 243    winsys->buffer_map = gdi_softpipe_buffer_map;
 244    winsys->buffer_unmap = gdi_softpipe_buffer_unmap;
 245    winsys->buffer_destroy = gdi_softpipe_buffer_destroy;
 246
 247    winsys->surface_buffer_create = gdi_softpipe_surface_buffer_create;
 248
 249    winsys->fence_reference = gdi_softpipe_fence_reference;
 250    winsys->fence_signalled = gdi_softpipe_fence_signalled;
 251    winsys->fence_finish = gdi_softpipe_fence_finish;
 252
 253    winsys->flush_frontbuffer = gdi_softpipe_dummy_flush_frontbuffer;
 254    winsys->get_name = gdi_softpipe_get_name;
 255
 256    screen = softpipe_create_screen(winsys);
 257    if(!screen)
 258       gdi_softpipe_destroy(winsys);
 259
 260    return screen;
 261 }
 262
 263
 264 static struct pipe_context *
 265 gdi_softpipe_context_create(struct pipe_screen *screen)
 266 {
 267    return softpipe_create(screen);
 268 }
 269
 270
 271 static void
 272 gdi_softpipe_present(struct pipe_screen *screen,
 273                      struct pipe_surface *surface,
 274                      HDC hDC)
 275 {
 276     struct softpipe_texture *texture;
 277     struct gdi_softpipe_buffer *buffer;
 278     BITMAPINFO bmi;
 279
 280     texture = softpipe_texture(surface->texture);
 281
 282     buffer = gdi_softpipe_buffer(texture->buffer);
 283
 284     memset(&bmi, 0, sizeof(BITMAPINFO));
 285     bmi.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
 286     bmi.bmiHeader.biWidth = texture->stride[surface->level] / pf_get_size(surface->format);
 287     bmi.bmiHeader.biHeight= -(long)surface->height;
 288     bmi.bmiHeader.biPlanes = 1;
 289     bmi.bmiHeader.biBitCount = pf_get_bits(surface->format);
 290     bmi.bmiHeader.biCompression = BI_RGB;
 291     bmi.bmiHeader.biSizeImage = 0;
 292     bmi.bmiHeader.biXPelsPerMeter = 0;
 293     bmi.bmiHeader.biYPelsPerMeter = 0;
 294     bmi.bmiHeader.biClrUsed = 0;
 295     bmi.bmiHeader.biClrImportant = 0;
 296
 297     StretchDIBits(hDC,
 298                   0, 0, surface->width, surface->height,
 299                   0, 0, surface->width, surface->height,
 300                   buffer->data, &bmi, 0, SRCCOPY);
 301 }
 302
 303
 304 static const struct stw_winsys stw_winsys = {
 305    &gdi_softpipe_screen_create,
 306    &gdi_softpipe_context_create,
 307    &gdi_softpipe_present,
 308    NULL, /* get_adapter_luid */
 309    NULL, /* shared_surface_open */
 310    NULL, /* shared_surface_close */
 311    NULL  /* compose */
 312 };
 313
 314
 315 BOOL WINAPI
 316 DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpReserved)
 317 {
 318    switch (fdwReason) {
 319    case DLL_PROCESS_ATTACH:
 320       if (!stw_init(&stw_winsys)) {
 321          return FALSE;
 322       }
 323       return stw_init_thread();
 324
 325    case DLL_THREAD_ATTACH:
 326       return stw_init_thread();
 327
 328    case DLL_THREAD_DETACH:
 329       stw_cleanup_thread();
 330       break;
 331
 332    case DLL_PROCESS_DETACH:
 333       stw_cleanup_thread();
 334       stw_cleanup();
 335       break;
 336    }
 337    return TRUE;
 338 }