src/egl/main/eglimage.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2009-2010 Chia-I Wu <olvaffe@gmail.com>
   4  * Copyright 2010-2011 LunarG, Inc.
   5  * All Rights Reserved.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the
   9  * "Software"), to deal in the Software without restriction, including
  10  * without limitation the rights to use, copy, modify, merge, publish,
  11  * distribute, sub license, and/or sell copies of the Software, and to
  12  * permit persons to whom the Software is furnished to do so, subject to
  13  * the following conditions:
  14  *
  15  * The above copyright notice and this permission notice (including the
  16  * next paragraph) shall be included in all copies or substantial portions
  17  * of the Software.
  18  *
  19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  20  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  21  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  22  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  23  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  24  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  25  * DEALINGS IN THE SOFTWARE.
  26  *
  27  **************************************************************************/
  28
  29
  30 #include <assert.h>
  31 #include <string.h>
  32
  33 #include "eglimage.h"
  34 #include "egllog.h"
  35
  36
  37 #ifdef EGL_KHR_image_base
  38
  39
  40 /**
  41  * Parse the list of image attributes and return the proper error code.
  42  */
  43 EGLint
  44 _eglParseImageAttribList(_EGLImageAttribs *attrs, _EGLDisplay *dpy,
  45                          const EGLint *attrib_list)
  46 {
  47    EGLint i, err = EGL_SUCCESS;
  48
  49    (void) dpy;
  50
  51    memset(attrs, 0, sizeof(attrs));
  52    attrs->ImagePreserved = EGL_FALSE;
  53    attrs->GLTextureLevel = 0;
  54    attrs->GLTextureZOffset = 0;
  55
  56    if (!attrib_list)
  57       return err;
  58
  59    for (i = 0; attrib_list[i] != EGL_NONE; i++) {
  60       EGLint attr = attrib_list[i++];
  61       EGLint val = attrib_list[i];
  62
  63       switch (attr) {
  64       /* EGL_KHR_image_base */
  65       case EGL_IMAGE_PRESERVED_KHR:
  66          attrs->ImagePreserved = val;
  67          break;
  68
  69       /* EGL_KHR_gl_image */
  70       case EGL_GL_TEXTURE_LEVEL_KHR:
  71          attrs->GLTextureLevel = val;
  72          break;
  73       case EGL_GL_TEXTURE_ZOFFSET_KHR:
  74          attrs->GLTextureZOffset = val;
  75          break;
  76
  77       /* EGL_MESA_drm_image */
  78       case EGL_WIDTH:
  79          attrs->Width = val;
  80          break;
  81       case EGL_HEIGHT:
  82          attrs->Height = val;
  83          break;
  84       case EGL_DRM_BUFFER_FORMAT_MESA:
  85          attrs->DRMBufferFormatMESA = val;
  86          break;
  87       case EGL_DRM_BUFFER_USE_MESA:
  88          attrs->DRMBufferUseMESA = val;
  89          break;
  90       case EGL_DRM_BUFFER_STRIDE_MESA:
  91          attrs->DRMBufferStrideMESA = val;
  92          break;
  93
  94       default:
  95          /* unknown attrs are ignored */
  96          break;
  97       }
  98
  99       if (err != EGL_SUCCESS) {
 100          _eglLog(_EGL_DEBUG, "bad image attribute 0x%04x", attr);
 101          break;
 102       }
 103    }
 104
 105    return err;
 106 }
 107
 108
 109 EGLBoolean
 110 _eglInitImage(_EGLImage *img, _EGLDisplay *dpy)
 111 {
 112    _eglInitResource(&img->Resource, sizeof(*img), dpy);
 113
 114    return EGL_TRUE;
 115 }
 116
 117
 118 #endif /* EGL_KHR_image_base */