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/**************************************************************************
*
* Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
/**
* Small/misc EGL functions
*/
#include <assert.h>
#include <string.h>
#include "eglcurrent.h"
#include "eglmisc.h"
#include "egldisplay.h"
/**
* Copy the extension into the string and update the string pointer.
*/
static EGLint
_eglAppendExtension(char **str, const char *ext)
{
char *s = *str;
size_t len = strlen(ext);
if (s) {
memcpy(s, ext, len);
s[len++] = ' ';
s[len] = '\0';
*str += len;
}
else {
len++;
}
return (EGLint) len;
}
/**
* Examine the individual extension enable/disable flags and recompute
* the driver's Extensions string.
*/
static void
_eglUpdateExtensionsString(_EGLDisplay *dpy)
{
#define _EGL_CHECK_EXTENSION(ext) \
do { \
if (dpy->Extensions.ext) { \
_eglAppendExtension(&exts, "EGL_" #ext); \
assert(exts <= dpy->Extensions.String + _EGL_MAX_EXTENSIONS_LEN); \
} \
} while (0)
char *exts = dpy->Extensions.String;
if (exts[0])
return;
_EGL_CHECK_EXTENSION(MESA_screen_surface);
_EGL_CHECK_EXTENSION(MESA_copy_context);
_EGL_CHECK_EXTENSION(MESA_drm_display);
_EGL_CHECK_EXTENSION(MESA_drm_image);
_EGL_CHECK_EXTENSION(KHR_image_base);
_EGL_CHECK_EXTENSION(KHR_image_pixmap);
if (dpy->Extensions.KHR_image_base && dpy->Extensions.KHR_image_pixmap)
_eglAppendExtension(&exts, "EGL_KHR_image");
_EGL_CHECK_EXTENSION(KHR_vg_parent_image);
_EGL_CHECK_EXTENSION(KHR_gl_texture_2D_image);
_EGL_CHECK_EXTENSION(KHR_gl_texture_cubemap_image);
_EGL_CHECK_EXTENSION(KHR_gl_texture_3D_image);
_EGL_CHECK_EXTENSION(KHR_gl_renderbuffer_image);
_EGL_CHECK_EXTENSION(KHR_reusable_sync);
_EGL_CHECK_EXTENSION(KHR_fence_sync);
_EGL_CHECK_EXTENSION(KHR_surfaceless_gles1);
_EGL_CHECK_EXTENSION(KHR_surfaceless_gles2);
_EGL_CHECK_EXTENSION(KHR_surfaceless_opengl);
_EGL_CHECK_EXTENSION(NOK_swap_region);
_EGL_CHECK_EXTENSION(NOK_texture_from_pixmap);
#undef _EGL_CHECK_EXTENSION
}
static void
_eglUpdateAPIsString(_EGLDisplay *dpy)
{
char *apis = dpy->ClientAPIs;
if (apis[0] || !dpy->ClientAPIsMask)
return;
if (dpy->ClientAPIsMask & EGL_OPENGL_BIT)
strcat(apis, "OpenGL ");
if (dpy->ClientAPIsMask & EGL_OPENGL_ES_BIT)
strcat(apis, "OpenGL_ES ");
if (dpy->ClientAPIsMask & EGL_OPENGL_ES2_BIT)
strcat(apis, "OpenGL_ES2 ");
if (dpy->ClientAPIsMask & EGL_OPENVG_BIT)
strcat(apis, "OpenVG ");
assert(strlen(apis) < sizeof(dpy->ClientAPIs));
}
const char *
_eglQueryString(_EGLDriver *drv, _EGLDisplay *dpy, EGLint name)
{
(void) drv;
(void) dpy;
switch (name) {
case EGL_VENDOR:
return _EGL_VENDOR_STRING;
case EGL_VERSION:
return dpy->Version;
case EGL_EXTENSIONS:
_eglUpdateExtensionsString(dpy);
return dpy->Extensions.String;
#ifdef EGL_VERSION_1_2
case EGL_CLIENT_APIS:
_eglUpdateAPIsString(dpy);
return dpy->ClientAPIs;
#endif
default:
_eglError(EGL_BAD_PARAMETER, "eglQueryString");
return NULL;
}
}
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