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Diffstat (limited to 'src/egl/main/eglmisc.c')
| -rw-r--r-- | src/egl/main/eglmisc.c | 180 |
1 files changed, 180 insertions, 0 deletions
diff --git a/src/egl/main/eglmisc.c b/src/egl/main/eglmisc.c new file mode 100644 index 0000000000..4652969659 --- /dev/null +++ b/src/egl/main/eglmisc.c @@ -0,0 +1,180 @@ +/************************************************************************** + * + * 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(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(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; + } +} + + +EGLBoolean +_eglWaitClient(_EGLDriver *drv, _EGLDisplay *dpy, _EGLContext *ctx) +{ + /* just a placeholder */ + (void) drv; + (void) dpy; + (void) ctx; + return EGL_TRUE; +} + + +EGLBoolean +_eglWaitNative(_EGLDriver *drv, _EGLDisplay *dpy, EGLint engine) +{ + /* just a placeholder */ + (void) drv; + (void) dpy; + switch (engine) { + case EGL_CORE_NATIVE_ENGINE: + break; + default: + _eglError(EGL_BAD_PARAMETER, "eglWaitNative(engine)"); + return EGL_FALSE; + } + + return EGL_TRUE; +} |