egl_g3d_image.c revision 870a9d643b1f256e6a379d96a325284dd2f7eeea 
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 */
43static struct pipe_resource *
44egl_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 *
71egl_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
127EGLBoolean
128egl_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}
137