src/gallium/winsys/g3dvl/xlib/xsp_winsys.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2009 Younes Manton.
   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 #include <vl_winsys.h>
  29 #include <X11/Xutil.h>
  30 #include <pipe/internal/p_winsys_screen.h>
  31 #include <pipe/p_state.h>
  32 #include <pipe/p_inlines.h>
  33 #include <util/u_memory.h>
  34 #include <util/u_math.h>
  35 #include <softpipe/sp_winsys.h>
  36 #include <softpipe/sp_video_context.h>
  37 #include <softpipe/sp_texture.h>
  38
  39 /* pipe_winsys implementation */
  40
  41 struct xsp_pipe_winsys
  42 {
  43    struct pipe_winsys base;
  44    Display *display;
  45    int screen;
  46    XImage *fbimage;
  47 };
  48
  49 struct xsp_context
  50 {
  51    Drawable drawable;
  52
  53    void (*pipe_destroy)(struct pipe_video_context *vpipe);
  54 };
  55
  56 struct xsp_buffer
  57 {
  58    struct pipe_buffer base;
  59    boolean is_user_buffer;
  60    void *data;
  61    void *mapped_data;
  62 };
  63
  64 static struct pipe_buffer* xsp_buffer_create(struct pipe_winsys *pws, unsigned alignment, unsigned usage, unsigned size)
  65 {
  66    struct xsp_buffer *buffer;
  67
  68    assert(pws);
  69
  70    buffer = calloc(1, sizeof(struct xsp_buffer));
  71    pipe_reference_init(&buffer->base.reference, 1);
  72    buffer->base.alignment = alignment;
  73    buffer->base.usage = usage;
  74    buffer->base.size = size;
  75    buffer->data = align_malloc(size, alignment);
  76
  77    return (struct pipe_buffer*)buffer;
  78 }
  79
  80 static struct pipe_buffer* xsp_user_buffer_create(struct pipe_winsys *pws, void *data, unsigned size)
  81 {
  82    struct xsp_buffer *buffer;
  83
  84    assert(pws);
  85
  86    buffer = calloc(1, sizeof(struct xsp_buffer));
  87    pipe_reference_init(&buffer->base.reference, 1);
  88    buffer->base.size = size;
  89    buffer->is_user_buffer = TRUE;
  90    buffer->data = data;
  91
  92    return (struct pipe_buffer*)buffer;
  93 }
  94
  95 static void* xsp_buffer_map(struct pipe_winsys *pws, struct pipe_buffer *buffer, unsigned flags)
  96 {
  97    struct xsp_buffer *xsp_buf = (struct xsp_buffer*)buffer;
  98
  99    assert(pws);
 100    assert(buffer);
 101
 102    xsp_buf->mapped_data = xsp_buf->data;
 103
 104    return xsp_buf->mapped_data;
 105 }
 106
 107 static void xsp_buffer_unmap(struct pipe_winsys *pws, struct pipe_buffer *buffer)
 108 {
 109    struct xsp_buffer *xsp_buf = (struct xsp_buffer*)buffer;
 110
 111    assert(pws);
 112    assert(buffer);
 113
 114    xsp_buf->mapped_data = NULL;
 115 }
 116
 117 static void xsp_buffer_destroy(struct pipe_buffer *buffer)
 118 {
 119    struct xsp_buffer *xsp_buf = (struct xsp_buffer*)buffer;
 120
 121    assert(buffer);
 122
 123    if (!xsp_buf->is_user_buffer)
 124       align_free(xsp_buf->data);
 125
 126    free(xsp_buf);
 127 }
 128
 129 static struct pipe_buffer* xsp_surface_buffer_create
 130 (
 131    struct pipe_winsys *pws,
 132    unsigned width,
 133    unsigned height,
 134    enum pipe_format format,
 135    unsigned usage,
 136    unsigned tex_usage,
 137    unsigned *stride
 138 )
 139 {
 140    const unsigned int ALIGNMENT = 1;
 141    struct pipe_format_block block;
 142    unsigned nblocksx, nblocksy;
 143
 144    pf_get_block(format, &block);
 145    nblocksx = pf_get_nblocksx(&block, width);
 146    nblocksy = pf_get_nblocksy(&block, height);
 147    *stride = align(nblocksx * block.size, ALIGNMENT);
 148
 149    return pws->buffer_create(pws, ALIGNMENT, usage,
 150                              *stride * nblocksy);
 151 }
 152
 153 static void xsp_fence_reference(struct pipe_winsys *pws, struct pipe_fence_handle **ptr, struct pipe_fence_handle *fence)
 154 {
 155    assert(pws);
 156    assert(ptr);
 157    assert(fence);
 158 }
 159
 160 static int xsp_fence_signalled(struct pipe_winsys *pws, struct pipe_fence_handle *fence, unsigned flag)
 161 {
 162    assert(pws);
 163    assert(fence);
 164
 165    return 0;
 166 }
 167
 168 static int xsp_fence_finish(struct pipe_winsys *pws, struct pipe_fence_handle *fence, unsigned flag)
 169 {
 170    assert(pws);
 171    assert(fence);
 172
 173    return 0;
 174 }
 175
 176 static void xsp_flush_frontbuffer(struct pipe_winsys *pws, struct pipe_surface *surface, void *context_private)
 177 {
 178    struct xsp_pipe_winsys *xsp_winsys;
 179    struct xsp_context *xsp_context;
 180
 181    assert(pws);
 182    assert(surface);
 183    assert(context_private);
 184
 185    xsp_winsys = (struct xsp_pipe_winsys*)pws;
 186    xsp_context = (struct xsp_context*)context_private;
 187    xsp_winsys->fbimage->width = surface->width;
 188    xsp_winsys->fbimage->height = surface->height;
 189    xsp_winsys->fbimage->bytes_per_line = surface->width * (xsp_winsys->fbimage->bits_per_pixel >> 3);
 190    xsp_winsys->fbimage->data = (char*)((struct xsp_buffer *)softpipe_texture(surface->texture)->buffer)->data + surface->offset;
 191
 192    XPutImage
 193    (
 194       xsp_winsys->display, xsp_context->drawable,
 195       XDefaultGC(xsp_winsys->display, xsp_winsys->screen),
 196       xsp_winsys->fbimage, 0, 0, 0, 0,
 197       surface->width, surface->height
 198    );
 199    XFlush(xsp_winsys->display);
 200 }
 201
 202 static const char* xsp_get_name(struct pipe_winsys *pws)
 203 {
 204    assert(pws);
 205    return "X11 SoftPipe";
 206 }
 207
 208 static void xsp_destroy(struct pipe_winsys *pws)
 209 {
 210    struct xsp_pipe_winsys *xsp_winsys = (struct xsp_pipe_winsys*)pws;
 211
 212    assert(pws);
 213
 214    /* XDestroyImage() wants to free the data as well */
 215    xsp_winsys->fbimage->data = NULL;
 216
 217    XDestroyImage(xsp_winsys->fbimage);
 218    FREE(xsp_winsys);
 219 }
 220
 221 /* Called through pipe_video_context::destroy() */
 222 static void xsp_pipe_destroy(struct pipe_video_context *vpipe)
 223 {
 224    struct xsp_context *xsp_context;
 225
 226    assert(vpipe);
 227
 228    xsp_context = vpipe->priv;
 229
 230    /* Call the original destroy */
 231    xsp_context->pipe_destroy(vpipe);
 232
 233    FREE(xsp_context);
 234 }
 235
 236 /* Show starts here */
 237
 238 Drawable
 239 vl_video_bind_drawable(struct pipe_video_context *vpipe, Drawable drawable)
 240 {
 241    struct xsp_context *xsp_context;
 242    Drawable old_drawable;
 243
 244    assert(vpipe);
 245
 246    xsp_context = vpipe->priv;
 247    old_drawable = xsp_context->drawable;
 248    xsp_context->drawable = drawable;
 249
 250    return old_drawable;
 251 }
 252
 253 struct pipe_screen*
 254 vl_screen_create(Display *display, int screen)
 255 {
 256    struct xsp_pipe_winsys *xsp_winsys;
 257
 258    assert(display);
 259
 260    xsp_winsys = CALLOC_STRUCT(xsp_pipe_winsys);
 261    if (!xsp_winsys)
 262       return NULL;
 263
 264    xsp_winsys->base.buffer_create = xsp_buffer_create;
 265    xsp_winsys->base.user_buffer_create = xsp_user_buffer_create;
 266    xsp_winsys->base.buffer_map = xsp_buffer_map;
 267    xsp_winsys->base.buffer_unmap = xsp_buffer_unmap;
 268    xsp_winsys->base.buffer_destroy = xsp_buffer_destroy;
 269    xsp_winsys->base.surface_buffer_create = xsp_surface_buffer_create;
 270    xsp_winsys->base.fence_reference = xsp_fence_reference;
 271    xsp_winsys->base.fence_signalled = xsp_fence_signalled;
 272    xsp_winsys->base.fence_finish = xsp_fence_finish;
 273    xsp_winsys->base.flush_frontbuffer = xsp_flush_frontbuffer;
 274    xsp_winsys->base.get_name = xsp_get_name;
 275    xsp_winsys->base.destroy = xsp_destroy;
 276    xsp_winsys->display = display;
 277    xsp_winsys->screen = screen;
 278    xsp_winsys->fbimage = XCreateImage
 279    (
 280       display,
 281       XDefaultVisual(display, screen),
 282       XDefaultDepth(display, screen),
 283       ZPixmap,
 284       0,
 285       NULL,
 286       0, /* Don't know the width and height until flush_frontbuffer */
 287       0,
 288       32,
 289       0
 290    );
 291
 292    if (!xsp_winsys->fbimage) {
 293       FREE(xsp_winsys);
 294       return NULL;
 295    }
 296
 297    XInitImage(xsp_winsys->fbimage);
 298
 299    return softpipe_create_screen(&xsp_winsys->base);
 300 }
 301
 302 struct pipe_video_context*
 303 vl_video_create(struct pipe_screen *screen,
 304                 enum pipe_video_profile profile,
 305                 enum pipe_video_chroma_format chroma_format,
 306                 unsigned width, unsigned height)
 307 {
 308    struct pipe_video_context *vpipe;
 309    struct xsp_context *xsp_context;
 310
 311    assert(screen);
 312    assert(width && height);
 313
 314    vpipe = sp_video_create(screen, profile, chroma_format, width, height);
 315    if (!vpipe)
 316       return NULL;
 317
 318    xsp_context = CALLOC_STRUCT(xsp_context);
 319    if (!xsp_context) {
 320       vpipe->destroy(vpipe);
 321       return NULL;
 322    }
 323
 324    /* Override this so we can free our xsp_context when the pipe is freed */
 325    xsp_context->pipe_destroy = vpipe->destroy;
 326    vpipe->destroy = xsp_pipe_destroy;
 327
 328    vpipe->priv = xsp_context;
 329
 330    return vpipe;
 331 }