X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fbuffer.h;h=b0f23ef26cbbce70bc3a880fdfb85488e9995f7b;hb=66181b3f47322ffc9b8aebf04a8c222abe1a75a2;hp=c473d7edc918202e9c7f3cfff2d23f77badebcaa;hpb=57de40e1e802e44ae5b4caa67b0bb8763828b5c3;p=libs%2Fgl.git

diff --git a/source/buffer.h b/source/buffer.h
index c473d7ed..b0f23ef2 100644
--- a/source/buffer.h
+++ b/source/buffer.h
@@ -1,15 +1,26 @@
 #ifndef MSP_GL_BUFFER_H_
 #define MSP_GL_BUFFER_H_
 
+#include <stdexcept>
+#include <string>
 #include <vector>
+#include <msp/core/attributes.h>
 #include "gl.h"
 #include <msp/gl/extensions/arb_pixel_buffer_object.h>
 #include <msp/gl/extensions/arb_vertex_buffer_object.h>
 #include <msp/gl/extensions/arb_uniform_buffer_object.h>
+#include <msp/gl/extensions/oes_mapbuffer.h>
 
 namespace Msp {
 namespace GL {
 
+class buffer_too_small: public std::logic_error
+{
+public:
+	buffer_too_small(const std::string &w): std::logic_error(w) { }
+	virtual ~buffer_too_small() throw() { }
+};
+
 enum BufferType
 {
 	ARRAY_BUFFER         = GL_ARRAY_BUFFER,
@@ -72,23 +83,33 @@ public:
 	/** Returns the default binding type for the buffer. */
 	BufferType get_type() const { return type; }
 
+	/** Defines the storage size of the buffer.  Must be called before data can
+	be uploaded.  Storage cannot be changed once set. */
+	void storage(unsigned);
+
 	/** Sets the usage hint of the buffer.  It will take effect the next time
 	the buffer's contents are defined. */
-	void set_usage(BufferUsage);
+	DEPRECATED void set_usage(BufferUsage);
 
 	/** Uploads data into the buffer, completely replacing any previous
-	contents. */
-	void data(unsigned, const void *);
+	contents.  Storage must be defined beforehand.  The data must have size
+	matching the defined storage. */
+	void data(const void *);
 
-	/** Overwrites part of the buffer data with new data.  The buffer size can
-	not be changed with this call. */
+	DEPRECATED void data(unsigned, const void *);
+
+	/** Overwrites part of the buffer data with new data.  Storage must be
+	defined beforehand. */
 	void sub_data(unsigned, unsigned, const void *);
 
 	unsigned get_size() const { return size; }
 
+	void require_size(unsigned) const;
+
 	BufferRange *create_range(unsigned, unsigned);
 
-	void *map(BufferAccess);
+	void *map();
+	DEPRECATED void *map(BufferAccess) { return map(); }
 	bool unmap();
 
 	/** Binds the buffer in its default slot. */