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