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