From fd12b37dbada6f945a94b93ecf332d0b6a8eef06 Mon Sep 17 00:00:00 2001
From: Keith Whitwell <keith@tungstengraphics.com>
Date: Sun, 29 Oct 2006 09:46:11 +0000
Subject: Checkpoint of new vbo-building code.  Currently builds regular arrays
 rather than VBO's - VBOs are easy but need to look closer at the driver
 interface.  The trivial/tri demo works.

---
 src/mesa/vbo/vbo_context.h | 101 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 101 insertions(+)
 create mode 100644 src/mesa/vbo/vbo_context.h

(limited to 'src/mesa/vbo/vbo_context.h')

diff --git a/src/mesa/vbo/vbo_context.h b/src/mesa/vbo/vbo_context.h
new file mode 100644
index 0000000000..6b0f14d70e
--- /dev/null
+++ b/src/mesa/vbo/vbo_context.h
@@ -0,0 +1,101 @@
+/*
+ * mesa 3-D graphics library
+ * Version:  6.5
+ *
+ * Copyright (C) 1999-2006  Brian Paul   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, sublicense,
+ * 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 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 NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL 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.
+ */
+
+/**
+ * \file vbo_context.h
+ * \brief VBO builder module datatypes and definitions.
+ * \author Keith Whitwell
+ */
+
+
+/**
+ * \mainpage The VBO builder module
+ *
+ * This module hooks into the GL dispatch table and catches all vertex
+ * building and drawing commands, such as glVertex3f, glBegin and
+ * glDrawArrays.  The module stores all incoming vertex data as arrays
+ * in GL vertex buffer objects (VBOs), and translates all drawing
+ * commands into calls to a driver supplied DrawPrimitives() callback.
+ *
+ * The module captures both immediate mode and display list drawing,
+ * and manages the allocation, reference counting and deallocation of
+ * vertex buffer objects itself.
+ * 
+ * The DrawPrimitives() callback can be either implemented by the
+ * driver itself or hooked to the tnl module's _tnl_draw_primitives()
+ * function for hardware without tnl capablilties or during fallbacks.
+ */
+
+
+#ifndef _VBO_CONTEXT_H
+#define _VBO_CONTEXT_H
+
+#include "vbo_attrib.h"
+#include "vbo_save.h"
+#include "vbo_exec.h"
+
+GLboolean _vbo_CreateContext( GLcontext *ctx );
+void _vbo_DestroyContext( GLcontext *ctx );
+
+
+struct vbo_context {
+   struct vbo_exec_context exec;
+   struct vbo_save_context save;
+
+   /* Callback into the driver.  This must always succeed, the driver
+    * is responsible for initiating any fallback actions required:
+    */
+   void (*draw_prims)( GLcontext *ctx,
+		       const struct gl_client_array *arrays[],
+		       const struct _mesa_prim *prims,
+		       GLuint nr_prims,
+		       const struct _mesa_index_buffer *ib,
+		       GLuint min_index,
+		       GLuint max_index );
+};
+
+
+static INLINE struct vbo_context *vbo_context(GLcontext *ctx) 
+{
+   return (struct vbo_context *)(ctx->swtnl_im);
+}
+
+enum {
+   VP_NONE = 1,
+   VP_NV,
+   VP_ARB
+};
+
+static INLINE GLuint get_program_mode( GLcontext *ctx )
+{
+   if (!ctx->VertexProgram._Enabled)
+      return VP_NONE;
+   else if (ctx->VertexProgram.Current->IsNVProgram)
+      return VP_NV;
+   else
+      return VP_ARB;
+}
+
+
+#endif
-- 
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