src/egl/main/eglimage.c

   1 #include <assert.h>
   2 #include <string.h>
   3
   4 #include "eglimage.h"
   5 #include "eglcurrent.h"
   6 #include "egllog.h"
   7
   8
   9 #ifdef EGL_KHR_image_base
  10
  11
  12 /**
  13  * Parse the list of image attributes and return the proper error code.
  14  */
  15 static EGLint
  16 _eglParseImageAttribList(_EGLImage *img, const EGLint *attrib_list)
  17 {
  18    EGLint i, err = EGL_SUCCESS;
  19
  20    if (!attrib_list)
  21       return EGL_SUCCESS;
  22
  23    for (i = 0; attrib_list[i] != EGL_NONE; i++) {
  24       EGLint attr = attrib_list[i++];
  25       EGLint val = attrib_list[i];
  26
  27       switch (attr) {
  28       case EGL_IMAGE_PRESERVED_KHR:
  29          img->Preserved = val;
  30          break;
  31       case EGL_GL_TEXTURE_LEVEL_KHR:
  32          img->GLTextureLevel = val;
  33          break;
  34       case EGL_GL_TEXTURE_ZOFFSET_KHR:
  35          img->GLTextureZOffset = val;
  36          break;
  37       default:
  38          /* unknown attrs are ignored */
  39          break;
  40       }
  41
  42       if (err != EGL_SUCCESS) {
  43          _eglLog(_EGL_DEBUG, "bad image attribute 0x%04x", attr);
  44          break;
  45       }
  46    }
  47
  48    return err;
  49 }
  50
  51
  52 EGLBoolean
  53 _eglInitImage(_EGLImage *img, _EGLDisplay *dpy, const EGLint *attrib_list)
  54 {
  55    EGLint err;
  56
  57    memset(img, 0, sizeof(_EGLImage));
  58    img->Resource.Display = dpy;
  59
  60    img->Preserved = EGL_FALSE;
  61    img->GLTextureLevel = 0;
  62    img->GLTextureZOffset = 0;
  63
  64    err = _eglParseImageAttribList(img, attrib_list);
  65    if (err != EGL_SUCCESS)
  66       return _eglError(err, "eglCreateImageKHR");
  67
  68    return EGL_TRUE;
  69 }
  70
  71
  72 _EGLImage *
  73 _eglCreateImageKHR(_EGLDriver *drv, _EGLDisplay *dpy, _EGLContext *ctx,
  74                    EGLenum target, EGLClientBuffer buffer,
  75                    const EGLint *attr_list)
  76 {
  77    /* driver should override this function */
  78    return NULL;
  79 }
  80
  81
  82 EGLBoolean
  83 _eglDestroyImageKHR(_EGLDriver *drv, _EGLDisplay *dpy, _EGLImage *image)
  84 {
  85    /* driver should override this function */
  86    return EGL_FALSE;
  87 }
  88
  89
  90 #endif /* EGL_KHR_image_base */