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 "util/u_simple_screen.h"
  42 #include "pipe/p_format.h"
  43 #include "pipe/p_context.h"
  44 #include "util/u_inlines.h"
  45 #include "util/u_format.h"
  46 #include "util/u_math.h"
  47 #include "util/u_memory.h"
  48 #include "softpipe/sp_winsys.h"
  49 #include "softpipe/sp_texture.h"
  50 #include "stw_winsys.h"
  51
  52
  53 struct gdi_softpipe_buffer
  54 {
  55    struct pipe_buffer base;
  56    boolean userBuffer;  /** Is this a user-space buffer? */
  57    void *data;
  58    void *mapped;
  59 };
  60
  61
  62 /** Cast wrapper */
  63 static INLINE struct gdi_softpipe_buffer *
  64 gdi_softpipe_buffer( struct pipe_buffer *buf )
  65 {
  66    return (struct gdi_softpipe_buffer *)buf;
  67 }
  68
  69
  70 static void *
  71 gdi_softpipe_buffer_map(struct pipe_winsys *winsys,
  72                         struct pipe_buffer *buf,
  73                         unsigned flags)
  74 {
  75    struct gdi_softpipe_buffer *gdi_softpipe_buf = gdi_softpipe_buffer(buf);
  76    gdi_softpipe_buf->mapped = gdi_softpipe_buf->data;
  77    return gdi_softpipe_buf->mapped;
  78 }
  79
  80
  81 static void
  82 gdi_softpipe_buffer_unmap(struct pipe_winsys *winsys,
  83                           struct pipe_buffer *buf)
  84 {
  85    struct gdi_softpipe_buffer *gdi_softpipe_buf = gdi_softpipe_buffer(buf);
  86    gdi_softpipe_buf->mapped = NULL;
  87 }
  88
  89
  90 static void
  91 gdi_softpipe_buffer_destroy(struct pipe_buffer *buf)
  92 {
  93    struct gdi_softpipe_buffer *oldBuf = gdi_softpipe_buffer(buf);
  94
  95    if (oldBuf->data) {
  96       if (!oldBuf->userBuffer)
  97          align_free(oldBuf->data);
  98
  99       oldBuf->data = NULL;
 100    }
 101
 102    FREE(oldBuf);
 103 }
 104
 105
 106 static const char *
 107 gdi_softpipe_get_name(struct pipe_winsys *winsys)
 108 {
 109    return "softpipe";
 110 }
 111
 112
 113 static struct pipe_buffer *
 114 gdi_softpipe_buffer_create(struct pipe_winsys *winsys,
 115                            unsigned alignment,
 116                            unsigned usage,
 117                            unsigned size)
 118 {
 119    struct gdi_softpipe_buffer *buffer = CALLOC_STRUCT(gdi_softpipe_buffer);
 120
 121    pipe_reference_init(&buffer->base.reference, 1);
 122    buffer->base.alignment = alignment;
 123    buffer->base.usage = usage;
 124    buffer->base.size = size;
 125
 126    buffer->data = align_malloc(size, alignment);
 127
 128    return &buffer->base;
 129 }
 130
 131
 132 /**
 133  * Create buffer which wraps user-space data.
 134  */
 135 static struct pipe_buffer *
 136 gdi_softpipe_user_buffer_create(struct pipe_winsys *winsys,
 137                                void *ptr,
 138                                unsigned bytes)
 139 {
 140    struct gdi_softpipe_buffer *buffer;
 141
 142    buffer = CALLOC_STRUCT(gdi_softpipe_buffer);
 143    if(!buffer)
 144       return NULL;
 145
 146    pipe_reference_init(&buffer->base.reference, 1);
 147    buffer->base.size = bytes;
 148    buffer->userBuffer = TRUE;
 149    buffer->data = ptr;
 150
 151    return &buffer->base;
 152 }
 153
 154
 155 static struct pipe_buffer *
 156 gdi_softpipe_surface_buffer_create(struct pipe_winsys *winsys,
 157                                    unsigned width, unsigned height,
 158                                    enum pipe_format format,
 159                                    unsigned usage,
 160                                    unsigned tex_usage,
 161                                    unsigned *stride)
 162 {
 163    const unsigned alignment = 64;
 164    unsigned nblocksy;
 165
 166    nblocksy = util_format_get_nblocksy(format, height);
 167    *stride = align(util_format_get_stride(format, width), alignment);
 168
 169    return winsys->buffer_create(winsys, alignment,
 170                                 usage,
 171                                 *stride * nblocksy);
 172 }
 173
 174
 175 static void
 176 gdi_softpipe_dummy_flush_frontbuffer(struct pipe_winsys *winsys,
 177                                      struct pipe_surface *surface,
 178                                      void *context_private)
 179 {
 180    assert(0);
 181 }
 182
 183
 184 static void
 185 gdi_softpipe_fence_reference(struct pipe_winsys *winsys,
 186                              struct pipe_fence_handle **ptr,
 187                              struct pipe_fence_handle *fence)
 188 {
 189 }
 190
 191
 192 static int
 193 gdi_softpipe_fence_signalled(struct pipe_winsys *winsys,
 194                              struct pipe_fence_handle *fence,
 195                              unsigned flag)
 196 {
 197    return 0;
 198 }
 199
 200
 201 static int
 202 gdi_softpipe_fence_finish(struct pipe_winsys *winsys,
 203                           struct pipe_fence_handle *fence,
 204                           unsigned flag)
 205 {
 206    return 0;
 207 }
 208
 209
 210 static void
 211 gdi_softpipe_destroy(struct pipe_winsys *winsys)
 212 {
 213    FREE(winsys);
 214 }
 215
 216
 217 static struct pipe_screen *
 218 gdi_softpipe_screen_create(void)
 219 {
 220    static struct pipe_winsys *winsys;
 221    struct pipe_screen *screen;
 222
 223    winsys = CALLOC_STRUCT(pipe_winsys);
 224    if(!winsys)
 225       return NULL;
 226
 227    winsys->destroy = gdi_softpipe_destroy;
 228
 229    winsys->buffer_create = gdi_softpipe_buffer_create;
 230    winsys->user_buffer_create = gdi_softpipe_user_buffer_create;
 231    winsys->buffer_map = gdi_softpipe_buffer_map;
 232    winsys->buffer_unmap = gdi_softpipe_buffer_unmap;
 233    winsys->buffer_destroy = gdi_softpipe_buffer_destroy;
 234
 235    winsys->surface_buffer_create = gdi_softpipe_surface_buffer_create;
 236
 237    winsys->fence_reference = gdi_softpipe_fence_reference;
 238    winsys->fence_signalled = gdi_softpipe_fence_signalled;
 239    winsys->fence_finish = gdi_softpipe_fence_finish;
 240
 241    winsys->flush_frontbuffer = gdi_softpipe_dummy_flush_frontbuffer;
 242    winsys->get_name = gdi_softpipe_get_name;
 243
 244    screen = softpipe_create_screen(winsys);
 245    if(!screen)
 246       gdi_softpipe_destroy(winsys);
 247
 248    return screen;
 249 }
 250
 251
 252 static void
 253 gdi_softpipe_present(struct pipe_screen *screen,
 254                      struct pipe_surface *surface,
 255                      HDC hDC)
 256 {
 257     struct softpipe_texture *texture;
 258     struct gdi_softpipe_buffer *buffer;
 259     BITMAPINFO bmi;
 260
 261     texture = softpipe_texture(surface->texture);
 262
 263     buffer = gdi_softpipe_buffer(texture->buffer);
 264
 265     memset(&bmi, 0, sizeof(BITMAPINFO));
 266     bmi.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
 267     bmi.bmiHeader.biWidth = texture->stride[surface->level] / util_format_get_blocksize(surface->format);
 268     bmi.bmiHeader.biHeight= -(long)surface->height;
 269     bmi.bmiHeader.biPlanes = 1;
 270     bmi.bmiHeader.biBitCount = util_format_get_blocksizebits(surface->format);
 271     bmi.bmiHeader.biCompression = BI_RGB;
 272     bmi.bmiHeader.biSizeImage = 0;
 273     bmi.bmiHeader.biXPelsPerMeter = 0;
 274     bmi.bmiHeader.biYPelsPerMeter = 0;
 275     bmi.bmiHeader.biClrUsed = 0;
 276     bmi.bmiHeader.biClrImportant = 0;
 277
 278     StretchDIBits(hDC,
 279                   0, 0, surface->width, surface->height,
 280                   0, 0, surface->width, surface->height,
 281                   buffer->data, &bmi, 0, SRCCOPY);
 282 }
 283
 284
 285 static const struct stw_winsys stw_winsys = {
 286    &gdi_softpipe_screen_create,
 287    &gdi_softpipe_present,
 288    NULL, /* get_adapter_luid */
 289    NULL, /* shared_surface_open */
 290    NULL, /* shared_surface_close */
 291    NULL  /* compose */
 292 };
 293
 294
 295 BOOL WINAPI
 296 DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpReserved)
 297 {
 298    switch (fdwReason) {
 299    case DLL_PROCESS_ATTACH:
 300       stw_init(&stw_winsys);
 301       stw_init_thread();
 302       break;
 303
 304    case DLL_THREAD_ATTACH:
 305       stw_init_thread();
 306       break;
 307
 308    case DLL_THREAD_DETACH:
 309       stw_cleanup_thread();
 310       break;
 311
 312    case DLL_PROCESS_DETACH:
 313       stw_cleanup_thread();
 314       stw_cleanup();
 315       break;
 316    }
 317    return TRUE;
 318 }