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
  18  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  21  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  22  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  23  *
  24  * Authors:
  25  *    Chia-I Wu <olv@lunarg.com>
  26  */
  27
  28 #include "pipe/p_screen.h"
  29 #include "util/u_memory.h"
  30 #include "util/u_rect.h"
  31 #include "util/u_inlines.h"
  32 #include "eglcurrent.h"
  33
  34 #include "native.h"
  35 #include "egl_g3d.h"
  36 #include "egl_g3d_api.h"
  37 #include "egl_g3d_image.h"
  38
  39 /**
  40  * Reference and return the front left buffer of the native pixmap.
  41  */
  42 static struct pipe_resource *
  43 egl_g3d_reference_native_pixmap(_EGLDisplay *dpy, EGLNativePixmapType pix)
  44 {
  45    struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
  46    struct egl_g3d_config *gconf;
  47    struct native_surface *nsurf;
  48    struct pipe_resource *textures[NUM_NATIVE_ATTACHMENTS];
  49    enum native_attachment natt;
  50
  51    gconf = egl_g3d_config(egl_g3d_find_pixmap_config(dpy, pix));
  52    if (!gconf)
  53       return NULL;
  54
  55    nsurf = gdpy->native->create_pixmap_surface(gdpy->native,
  56          pix, gconf->native);
  57    if (!nsurf)
  58       return NULL;
  59
  60    natt = NATIVE_ATTACHMENT_FRONT_LEFT;
  61    if (!nsurf->validate(nsurf, 1 << natt, NULL, textures, NULL, NULL))
  62       textures[natt] = NULL;
  63
  64    nsurf->destroy(nsurf);
  65
  66    return textures[natt];
  67 }
  68
  69 _EGLImage *
  70 egl_g3d_create_image(_EGLDriver *drv, _EGLDisplay *dpy, _EGLContext *ctx,
  71                      EGLenum target, EGLClientBuffer buffer,
  72                      const EGLint *attribs)
  73 {
  74    struct pipe_resource *ptex;
  75    struct egl_g3d_image *gimg;
  76    unsigned face = 0, level = 0, zslice = 0;
  77
  78    gimg = CALLOC_STRUCT(egl_g3d_image);
  79    if (!gimg) {
  80       _eglError(EGL_BAD_ALLOC, "eglCreatePbufferSurface");
  81       return NULL;
  82    }
  83
  84    if (!_eglInitImage(&gimg->base, dpy, attribs)) {
  85       free(gimg);
  86       return NULL;
  87    }
  88
  89    switch (target) {
  90    case EGL_NATIVE_PIXMAP_KHR:
  91       ptex = egl_g3d_reference_native_pixmap(dpy,
  92             (EGLNativePixmapType) buffer);
  93       break;
  94    default:
  95       ptex = NULL;
  96       break;
  97    }
  98
  99    if (!ptex) {
 100       free(gimg);
 101       return NULL;
 102    }
 103
 104    if (level > ptex->last_level) {
 105       _eglError(EGL_BAD_MATCH, "eglCreateEGLImageKHR");
 106       pipe_resource_reference(&gimg->texture, NULL);
 107       free(gimg);
 108       return NULL;
 109    }
 110    if (zslice > ptex->depth0) {
 111       _eglError(EGL_BAD_PARAMETER, "eglCreateEGLImageKHR");
 112       pipe_resource_reference(&gimg->texture, NULL);
 113       free(gimg);
 114       return NULL;
 115    }
 116
 117    /* transfer the ownership to the image */
 118    gimg->texture = ptex;
 119    gimg->face = face;
 120    gimg->level = level;
 121    gimg->zslice = zslice;
 122
 123    return &gimg->base;
 124 }
 125
 126 EGLBoolean
 127 egl_g3d_destroy_image(_EGLDriver *drv, _EGLDisplay *dpy, _EGLImage *img)
 128 {
 129    struct egl_g3d_image *gimg = egl_g3d_image(img);
 130
 131    pipe_resource_reference(&gimg->texture, NULL);
 132    free(gimg);
 133
 134    return EGL_TRUE;
 135 }