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    unsigned nblocksy;
 142
 143    nblocksy = pf_get_nblocksy(format, height);
 144    *stride = align(pf_get_stride(format, width), ALIGNMENT);
 145
 146    return pws->buffer_create(pws, ALIGNMENT, usage,
 147                              *stride * nblocksy);
 148 }
 149
 150 static void xsp_fence_reference(struct pipe_winsys *pws, struct pipe_fence_handle **ptr, struct pipe_fence_handle *fence)
 151 {
 152    assert(pws);
 153    assert(ptr);
 154    assert(fence);
 155 }
 156
 157 static int xsp_fence_signalled(struct pipe_winsys *pws, struct pipe_fence_handle *fence, unsigned flag)
 158 {
 159    assert(pws);
 160    assert(fence);
 161
 162    return 0;
 163 }
 164
 165 static int xsp_fence_finish(struct pipe_winsys *pws, struct pipe_fence_handle *fence, unsigned flag)
 166 {
 167    assert(pws);
 168    assert(fence);
 169
 170    return 0;
 171 }
 172
 173 static void xsp_flush_frontbuffer(struct pipe_winsys *pws, struct pipe_surface *surface, void *context_private)
 174 {
 175    struct xsp_pipe_winsys *xsp_winsys;
 176    struct xsp_context *xsp_context;
 177
 178    assert(pws);
 179    assert(surface);
 180    assert(context_private);
 181
 182    xsp_winsys = (struct xsp_pipe_winsys*)pws;
 183    xsp_context = (struct xsp_context*)context_private;
 184    xsp_winsys->fbimage->width = surface->width;
 185    xsp_winsys->fbimage->height = surface->height;
 186    xsp_winsys->fbimage->bytes_per_line = surface->width * (xsp_winsys->fbimage->bits_per_pixel >> 3);
 187    xsp_winsys->fbimage->data = (char*)((struct xsp_buffer *)softpipe_texture(surface->texture)->buffer)->data + surface->offset;
 188
 189    XPutImage
 190    (
 191       xsp_winsys->display, xsp_context->drawable,
 192       XDefaultGC(xsp_winsys->display, xsp_winsys->screen),
 193       xsp_winsys->fbimage, 0, 0, 0, 0,
 194       surface->width, surface->height
 195    );
 196    XFlush(xsp_winsys->display);
 197 }
 198
 199 static const char* xsp_get_name(struct pipe_winsys *pws)
 200 {
 201    assert(pws);
 202    return "X11 SoftPipe";
 203 }
 204
 205 static void xsp_destroy(struct pipe_winsys *pws)
 206 {
 207    struct xsp_pipe_winsys *xsp_winsys = (struct xsp_pipe_winsys*)pws;
 208
 209    assert(pws);
 210
 211    /* XDestroyImage() wants to free the data as well */
 212    xsp_winsys->fbimage->data = NULL;
 213
 214    XDestroyImage(xsp_winsys->fbimage);
 215    FREE(xsp_winsys);
 216 }
 217
 218 /* Called through pipe_video_context::destroy() */
 219 static void xsp_pipe_destroy(struct pipe_video_context *vpipe)
 220 {
 221    struct xsp_context *xsp_context;
 222
 223    assert(vpipe);
 224
 225    xsp_context = vpipe->priv;
 226
 227    /* Call the original destroy */
 228    xsp_context->pipe_destroy(vpipe);
 229
 230    FREE(xsp_context);
 231 }
 232
 233 /* Show starts here */
 234
 235 Drawable
 236 vl_video_bind_drawable(struct pipe_video_context *vpipe, Drawable drawable)
 237 {
 238    struct xsp_context *xsp_context;
 239    Drawable old_drawable;
 240
 241    assert(vpipe);
 242
 243    xsp_context = vpipe->priv;
 244    old_drawable = xsp_context->drawable;
 245    xsp_context->drawable = drawable;
 246
 247    return old_drawable;
 248 }
 249
 250 struct pipe_screen*
 251 vl_screen_create(Display *display, int screen)
 252 {
 253    struct xsp_pipe_winsys *xsp_winsys;
 254
 255    assert(display);
 256
 257    xsp_winsys = CALLOC_STRUCT(xsp_pipe_winsys);
 258    if (!xsp_winsys)
 259       return NULL;
 260
 261    xsp_winsys->base.buffer_create = xsp_buffer_create;
 262    xsp_winsys->base.user_buffer_create = xsp_user_buffer_create;
 263    xsp_winsys->base.buffer_map = xsp_buffer_map;
 264    xsp_winsys->base.buffer_unmap = xsp_buffer_unmap;
 265    xsp_winsys->base.buffer_destroy = xsp_buffer_destroy;
 266    xsp_winsys->base.surface_buffer_create = xsp_surface_buffer_create;
 267    xsp_winsys->base.fence_reference = xsp_fence_reference;
 268    xsp_winsys->base.fence_signalled = xsp_fence_signalled;
 269    xsp_winsys->base.fence_finish = xsp_fence_finish;
 270    xsp_winsys->base.flush_frontbuffer = xsp_flush_frontbuffer;
 271    xsp_winsys->base.get_name = xsp_get_name;
 272    xsp_winsys->base.destroy = xsp_destroy;
 273    xsp_winsys->display = display;
 274    xsp_winsys->screen = screen;
 275    xsp_winsys->fbimage = XCreateImage
 276    (
 277       display,
 278       XDefaultVisual(display, screen),
 279       XDefaultDepth(display, screen),
 280       ZPixmap,
 281       0,
 282       NULL,
 283       0, /* Don't know the width and height until flush_frontbuffer */
 284       0,
 285       32,
 286       0
 287    );
 288
 289    if (!xsp_winsys->fbimage) {
 290       FREE(xsp_winsys);
 291       return NULL;
 292    }
 293
 294    XInitImage(xsp_winsys->fbimage);
 295
 296    return softpipe_create_screen(&xsp_winsys->base);
 297 }
 298
 299 struct pipe_video_context*
 300 vl_video_create(Display *display, int screen,
 301                 struct pipe_screen *p_screen,
 302                 enum pipe_video_profile profile,
 303                 enum pipe_video_chroma_format chroma_format,
 304                 unsigned width, unsigned height)
 305 {
 306    struct pipe_video_context *vpipe;
 307    struct xsp_context *xsp_context;
 308
 309    assert(p_screen);
 310    assert(width && height);
 311
 312    vpipe = sp_video_create(p_screen, profile, chroma_format, width, height);
 313    if (!vpipe)
 314       return NULL;
 315
 316    xsp_context = CALLOC_STRUCT(xsp_context);
 317    if (!xsp_context) {
 318       vpipe->destroy(vpipe);
 319       return NULL;
 320    }
 321
 322    /* Override this so we can free our xsp_context when the pipe is freed */
 323    xsp_context->pipe_destroy = vpipe->destroy;
 324    vpipe->destroy = xsp_pipe_destroy;
 325
 326    vpipe->priv = xsp_context;
 327
 328    return vpipe;
 329 }