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-rw-r--r--src/egl/main/eglsurface.c74
-rw-r--r--src/egl/main/eglsurface.h4
2 files changed, 78 insertions, 0 deletions
diff --git a/src/egl/main/eglsurface.c b/src/egl/main/eglsurface.c
index 41d091735a..94b86fa982 100644
--- a/src/egl/main/eglsurface.c
+++ b/src/egl/main/eglsurface.c
@@ -247,3 +247,77 @@ _eglSwapInterval(_EGLDriver *drv, EGLDisplay dpy, EGLint interval)
}
+
+/**
+ ** EGL Surface Utility Functions. This could be handy for device drivers.
+ **/
+
+
+/**
+ * Initialize the fields of the given _EGLSurface object from the other
+ * parameters. Do error checking too. Allocate EGLSurface handle and
+ * insert into hash table.
+ * \return EGLSurface handle or EGL_NO_SURFACE if any error
+ */
+EGLSurface
+_eglInitPbufferSurface(_EGLSurface *surface, _EGLDriver *drv, EGLDisplay dpy,
+ EGLConfig config, const EGLint *attrib_list)
+{
+ _EGLConfig *conf;
+ EGLint width = 0, height = 0, largest = 0;
+ EGLint texFormat = 0, texTarget = 0, mipmapTex = 0;
+ EGLint i;
+
+ conf = _eglLookupConfig(drv, dpy, config);
+ if (!conf) {
+ _eglError(EGL_BAD_CONFIG, "eglCreatePbufferSurface");
+ return EGL_NO_SURFACE;
+ }
+
+ for (i = 0; attrib_list && attrib_list[i] != EGL_NONE; i++) {
+ switch (attrib_list[i]) {
+ case EGL_WIDTH:
+ width = attrib_list[++i];
+ break;
+ case EGL_HEIGHT:
+ height = attrib_list[++i];
+ break;
+ case EGL_LARGEST_PBUFFER:
+ largest = attrib_list[++i];
+ break;
+ case EGL_TEXTURE_FORMAT:
+ texFormat = attrib_list[++i];
+ break;
+ case EGL_TEXTURE_TARGET:
+ texTarget = attrib_list[++i];
+ break;
+ case EGL_MIPMAP_TEXTURE:
+ mipmapTex = attrib_list[++i];
+ break;
+ default:
+ _eglError(EGL_BAD_ATTRIBUTE, "eglCreatePbufferSurface");
+ return EGL_NO_SURFACE;
+ }
+ }
+
+ if (width <= 0 || height <= 0) {
+ _eglError(EGL_BAD_ATTRIBUTE, "eglCreatePbufferSurface(width or height)");
+ return EGL_NO_SURFACE;
+ }
+
+ surface->Config = conf;
+ surface->Type = EGL_PBUFFER_BIT;
+ surface->Width = width;
+ surface->Height = height;
+ surface->TextureFormat = texFormat;
+ surface->TextureTarget = texTarget;
+ surface->MipmapTexture = mipmapTex;
+ surface->MipmapLevel = 0;
+ surface->SwapInterval = 0;
+
+ /* insert into hash table */
+ _eglSaveSurface(surface);
+ assert(surface->Handle);
+
+ return surface->Handle;
+}
diff --git a/src/egl/main/eglsurface.h b/src/egl/main/eglsurface.h
index 2f0e07c53c..4853edfcd1 100644
--- a/src/egl/main/eglsurface.h
+++ b/src/egl/main/eglsurface.h
@@ -93,4 +93,8 @@ _eglSwapInterval(_EGLDriver *drv, EGLDisplay dpy, EGLint interval);
+extern EGLSurface
+_eglInitPbufferSurface(_EGLSurface *surface, _EGLDriver *drv, EGLDisplay dpy,
+ EGLConfig config, const EGLint *attrib_list);
+
#endif /* EGLSURFACE_INCLUDED */