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_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    struct pipe_format_block block;
 143    unsigned nblocksx, nblocksy;
 144
 145    util_format_get_block(format, &block);
 146    nblocksx = pf_get_nblocksx(&block, width);
 147    nblocksy = pf_get_nblocksy(&block, height);
 148    *stride = align(nblocksx * block.size, ALIGNMENT);
 149
 150    return pws->buffer_create(pws, ALIGNMENT, usage,
 151                              *stride * nblocksy);
 152 }
 153
 154 static void xsp_fence_reference(struct pipe_winsys *pws, struct pipe_fence_handle **ptr, struct pipe_fence_handle *fence)
 155 {
 156    assert(pws);
 157    assert(ptr);
 158    assert(fence);
 159 }
 160
 161 static int xsp_fence_signalled(struct pipe_winsys *pws, struct pipe_fence_handle *fence, unsigned flag)
 162 {
 163    assert(pws);
 164    assert(fence);
 165
 166    return 0;
 167 }
 168
 169 static int xsp_fence_finish(struct pipe_winsys *pws, struct pipe_fence_handle *fence, unsigned flag)
 170 {
 171    assert(pws);
 172    assert(fence);
 173
 174    return 0;
 175 }
 176
 177 static void xsp_flush_frontbuffer(struct pipe_winsys *pws, struct pipe_surface *surface, void *context_private)
 178 {
 179    struct xsp_pipe_winsys *xsp_winsys;
 180    struct xsp_context *xsp_context;
 181
 182    assert(pws);
 183    assert(surface);
 184    assert(context_private);
 185
 186    xsp_winsys = (struct xsp_pipe_winsys*)pws;
 187    xsp_context = (struct xsp_context*)context_private;
 188    xsp_winsys->fbimage->width = surface->width;
 189    xsp_winsys->fbimage->height = surface->height;
 190    xsp_winsys->fbimage->bytes_per_line = surface->width * (xsp_winsys->fbimage->bits_per_pixel >> 3);
 191    xsp_winsys->fbimage->data = (char*)((struct xsp_buffer *)softpipe_texture(surface->texture)->buffer)->data + surface->offset;
 192
 193    XPutImage
 194    (
 195       xsp_winsys->display, xsp_context->drawable,
 196       XDefaultGC(xsp_winsys->display, xsp_winsys->screen),
 197       xsp_winsys->fbimage, 0, 0, 0, 0,
 198       surface->width, surface->height
 199    );
 200    XFlush(xsp_winsys->display);
 201 }
 202
 203 static const char* xsp_get_name(struct pipe_winsys *pws)
 204 {
 205    assert(pws);
 206    return "X11 SoftPipe";
 207 }
 208
 209 static void xsp_destroy(struct pipe_winsys *pws)
 210 {
 211    struct xsp_pipe_winsys *xsp_winsys = (struct xsp_pipe_winsys*)pws;
 212
 213    assert(pws);
 214
 215    /* XDestroyImage() wants to free the data as well */
 216    xsp_winsys->fbimage->data = NULL;
 217
 218    XDestroyImage(xsp_winsys->fbimage);
 219    FREE(xsp_winsys);
 220 }
 221
 222 /* Called through pipe_video_context::destroy() */
 223 static void xsp_pipe_destroy(struct pipe_video_context *vpipe)
 224 {
 225    struct xsp_context *xsp_context;
 226
 227    assert(vpipe);
 228
 229    xsp_context = vpipe->priv;
 230
 231    /* Call the original destroy */
 232    xsp_context->pipe_destroy(vpipe);
 233
 234    FREE(xsp_context);
 235 }
 236
 237 /* Show starts here */
 238
 239 Drawable
 240 vl_video_bind_drawable(struct pipe_video_context *vpipe, Drawable drawable)
 241 {
 242    struct xsp_context *xsp_context;
 243    Drawable old_drawable;
 244
 245    assert(vpipe);
 246
 247    xsp_context = vpipe->priv;
 248    old_drawable = xsp_context->drawable;
 249    xsp_context->drawable = drawable;
 250
 251    return old_drawable;
 252 }
 253
 254 struct pipe_screen*
 255 vl_screen_create(Display *display, int screen)
 256 {
 257    struct xsp_pipe_winsys *xsp_winsys;
 258
 259    assert(display);
 260
 261    xsp_winsys = CALLOC_STRUCT(xsp_pipe_winsys);
 262    if (!xsp_winsys)
 263       return NULL;
 264
 265    xsp_winsys->base.buffer_create = xsp_buffer_create;
 266    xsp_winsys->base.user_buffer_create = xsp_user_buffer_create;
 267    xsp_winsys->base.buffer_map = xsp_buffer_map;
 268    xsp_winsys->base.buffer_unmap = xsp_buffer_unmap;
 269    xsp_winsys->base.buffer_destroy = xsp_buffer_destroy;
 270    xsp_winsys->base.surface_buffer_create = xsp_surface_buffer_create;
 271    xsp_winsys->base.fence_reference = xsp_fence_reference;
 272    xsp_winsys->base.fence_signalled = xsp_fence_signalled;
 273    xsp_winsys->base.fence_finish = xsp_fence_finish;
 274    xsp_winsys->base.flush_frontbuffer = xsp_flush_frontbuffer;
 275    xsp_winsys->base.get_name = xsp_get_name;
 276    xsp_winsys->base.destroy = xsp_destroy;
 277    xsp_winsys->display = display;
 278    xsp_winsys->screen = screen;
 279    xsp_winsys->fbimage = XCreateImage
 280    (
 281       display,
 282       XDefaultVisual(display, screen),
 283       XDefaultDepth(display, screen),
 284       ZPixmap,
 285       0,
 286       NULL,
 287       0, /* Don't know the width and height until flush_frontbuffer */
 288       0,
 289       32,
 290       0
 291    );
 292
 293    if (!xsp_winsys->fbimage) {
 294       FREE(xsp_winsys);
 295       return NULL;
 296    }
 297
 298    XInitImage(xsp_winsys->fbimage);
 299
 300    return softpipe_create_screen(&xsp_winsys->base);
 301 }
 302
 303 struct pipe_video_context*
 304 vl_video_create(Display *display, int screen,
 305                 struct pipe_screen *p_screen,
 306                 enum pipe_video_profile profile,
 307                 enum pipe_video_chroma_format chroma_format,
 308                 unsigned width, unsigned height)
 309 {
 310    struct pipe_video_context *vpipe;
 311    struct xsp_context *xsp_context;
 312
 313    assert(p_screen);
 314    assert(width && height);
 315
 316    vpipe = sp_video_create(p_screen, profile, chroma_format, width, height);
 317    if (!vpipe)
 318       return NULL;
 319
 320    xsp_context = CALLOC_STRUCT(xsp_context);
 321    if (!xsp_context) {
 322       vpipe->destroy(vpipe);
 323       return NULL;
 324    }
 325
 326    /* Override this so we can free our xsp_context when the pipe is freed */
 327    xsp_context->pipe_destroy = vpipe->destroy;
 328    vpipe->destroy = xsp_pipe_destroy;
 329
 330    vpipe->priv = xsp_context;
 331
 332    return vpipe;
 333 }