aboutsummaryrefslogtreecommitdiff
path: root/src/share/native/sun/java2d/ShaderList.h
diff options
context:
space:
mode:
Diffstat (limited to 'src/share/native/sun/java2d/ShaderList.h')
-rw-r--r--src/share/native/sun/java2d/ShaderList.h85
1 files changed, 85 insertions, 0 deletions
diff --git a/src/share/native/sun/java2d/ShaderList.h b/src/share/native/sun/java2d/ShaderList.h
new file mode 100644
index 000000000..f46190fcd
--- /dev/null
+++ b/src/share/native/sun/java2d/ShaderList.h
@@ -0,0 +1,85 @@
+/*
+ * Copyright 2007-2008 Sun Microsystems, Inc. All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Sun designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Sun in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+#ifndef ShaderList_h_Included
+#define ShaderList_h_Included
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "jni.h"
+#include "jlong.h"
+
+typedef void (ShaderDisposeFunc)(jlong programID);
+
+/**
+ * The following structures are used to maintain a list of fragment program
+ * objects and their associated attributes. Each logical shader (e.g.
+ * RadialGradientPaint shader, ConvolveOp shader) can have a number of
+ * different variants depending on a number of factors, such as whether
+ * antialiasing is enabled or the current composite mode. Since the number
+ * of possible combinations of these factors is in the hundreds, we need
+ * some way to create fragment programs on an as-needed basis, and also
+ * keep them in a limited sized cache to avoid creating too many objects.
+ *
+ * The ShaderInfo structure keeps a reference to the fragment program's
+ * handle, as well as some other values that help differentiate one ShaderInfo
+ * from another. ShaderInfos can be chained together to form a linked list.
+ *
+ * The ShaderList structure acts as a cache for ShaderInfos, placing
+ * most-recently used items at the front, and removing items from the
+ * cache when its size exceeds the "maxItems" limit.
+ */
+typedef struct _ShaderInfo ShaderInfo;
+
+typedef struct {
+ ShaderInfo *head;
+ ShaderDisposeFunc *dispose;
+ jint maxItems;
+} ShaderList;
+
+struct _ShaderInfo {
+ ShaderInfo *next;
+ jlong programID;
+ jint compType;
+ jint compMode;
+ jint flags;
+};
+
+void ShaderList_AddProgram(ShaderList *programList,
+ jlong programID,
+ jint compType, jint compMode,
+ jint flags);
+jlong ShaderList_FindProgram(ShaderList *programList,
+ jint compType, jint compMode,
+ jint flags);
+void ShaderList_Dispose(ShaderList *programList);
+
+#ifdef __cplusplus
+};
+#endif
+
+#endif /* ShaderList_h_Included */