src/gallium/state_trackers/egl/common/egl_g3d_image.c

   1 /*
   2  * Mesa 3-D graphics library
   3  * Version:  7.8
   4  *
   5  * Copyright (C) 2010 LunarG Inc.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the "Software"),
   9  * to deal in the Software without restriction, including without limitation
  10  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  11  * and/or sell copies of the Software, and to permit persons to whom the
  12  * Software is furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice shall be included
  15  * in all copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  22  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  23  * DEALINGS IN THE SOFTWARE.
  24  *
  25  * Authors:
  26  *    Chia-I Wu <olv@lunarg.com>
  27  */
  28
  29 #include "pipe/p_screen.h"
  30 #include "util/u_memory.h"
  31 #include "util/u_rect.h"
  32 #include "util/u_inlines.h"
  33 #include "eglcurrent.h"
  34
  35 #include "native.h"
  36 #include "egl_g3d.h"
  37 #include "egl_g3d_api.h"
  38 #include "egl_g3d_image.h"
  39
  40 /**
  41  * Reference and return the front left buffer of the native pixmap.
  42  */
  43 static struct pipe_resource *
  44 egl_g3d_reference_native_pixmap(_EGLDisplay *dpy, EGLNativePixmapType pix)
  45 {
  46    struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
  47    struct egl_g3d_config *gconf;
  48    struct native_surface *nsurf;
  49    struct pipe_resource *textures[NUM_NATIVE_ATTACHMENTS];
  50    enum native_attachment natt;
  51
  52    gconf = egl_g3d_config(egl_g3d_find_pixmap_config(dpy, pix));
  53    if (!gconf)
  54       return NULL;
  55
  56    nsurf = gdpy->native->create_pixmap_surface(gdpy->native,
  57          pix, gconf->native);
  58    if (!nsurf)
  59       return NULL;
  60
  61    natt = NATIVE_ATTACHMENT_FRONT_LEFT;
  62    if (!nsurf->validate(nsurf, 1 << natt, NULL, textures, NULL, NULL))
  63       textures[natt] = NULL;
  64
  65    nsurf->destroy(nsurf);
  66
  67    return textures[natt];
  68 }
  69
  70 _EGLImage *
  71 egl_g3d_create_image(_EGLDriver *drv, _EGLDisplay *dpy, _EGLContext *ctx,
  72                      EGLenum target, EGLClientBuffer buffer,
  73                      const EGLint *attribs)
  74 {
  75    struct pipe_resource *ptex;
  76    struct egl_g3d_image *gimg;
  77    unsigned face = 0, level = 0, zslice = 0;
  78
  79    gimg = CALLOC_STRUCT(egl_g3d_image);
  80    if (!gimg) {
  81       _eglError(EGL_BAD_ALLOC, "eglCreatePbufferSurface");
  82       return NULL;
  83    }
  84
  85    if (!_eglInitImage(&gimg->base, dpy, attribs)) {
  86       FREE(gimg);
  87       return NULL;
  88    }
  89
  90    switch (target) {
  91    case EGL_NATIVE_PIXMAP_KHR:
  92       ptex = egl_g3d_reference_native_pixmap(dpy,
  93             (EGLNativePixmapType) buffer);
  94       break;
  95    default:
  96       ptex = NULL;
  97       break;
  98    }
  99
 100    if (!ptex) {
 101       FREE(gimg);
 102       return NULL;
 103    }
 104
 105    if (level > ptex->last_level) {
 106       _eglError(EGL_BAD_MATCH, "eglCreateEGLImageKHR");
 107       pipe_resource_reference(&gimg->texture, NULL);
 108       FREE(gimg);
 109       return NULL;
 110    }
 111    if (zslice > ptex->depth0) {
 112       _eglError(EGL_BAD_PARAMETER, "eglCreateEGLImageKHR");
 113       pipe_resource_reference(&gimg->texture, NULL);
 114       FREE(gimg);
 115       return NULL;
 116    }
 117
 118    /* transfer the ownership to the image */
 119    gimg->texture = ptex;
 120    gimg->face = face;
 121    gimg->level = level;
 122    gimg->zslice = zslice;
 123
 124    return &gimg->base;
 125 }
 126
 127 EGLBoolean
 128 egl_g3d_destroy_image(_EGLDriver *drv, _EGLDisplay *dpy, _EGLImage *img)
 129 {
 130    struct egl_g3d_image *gimg = egl_g3d_image(img);
 131
 132    pipe_resource_reference(&gimg->texture, NULL);
 133    FREE(gimg);
 134
 135    return EGL_TRUE;
 136 }