X-Git-Url: https://git.ucc.asn.au/?p=ipdf%2Fcode.git;a=blobdiff_plain;f=src%2Fgraphicsbuffer.h;h=466534531d8e5ab1b665d37aa5414a6e2e71de38;hp=d74d344ac6563bae3da9773fe41ebea3dc964f2f;hb=2efd51d686e0dd911f0220ab2d595c0b3b0e18be;hpb=bdda0103bf26d215d41093316ca0e15cd67fec1d

diff --git a/src/graphicsbuffer.h b/src/graphicsbuffer.h
index d74d344..4665345 100644
--- a/src/graphicsbuffer.h
+++ b/src/graphicsbuffer.h
@@ -2,14 +2,13 @@
 #define _GRAPHICSBUFFER_H
 
 #include <SDL.h>
-#define GL_GLEXT_PROTOTYPES
-#include <SDL_opengl.h>
+#include "gl_core44.h"
 
 
 namespace IPDF
 {
-	/*
-	 * The "Screen" class handles managing the OS window (using SDL2).
+	/**
+	 * Implementation of an OpenGL buffer, with some extra cleverness.
 	 */
 	class GraphicsBuffer
 	{
@@ -21,7 +20,8 @@ namespace IPDF
 			BufferTypePixelPack,		// Pixel Pack buffer
 			BufferTypePixelUnpack,
 			BufferTypeUniform,		// Uniform/Constant buffer
-			BufferTypeDrawIndirect,
+			BufferTypeTexture,		// I was hoping to avoid this one.
+			BufferTypeDrawIndirect
 		};
 		
 		enum BufferUsage
@@ -53,15 +53,26 @@ namespace IPDF
 
 		void Resize(size_t length);
 		const size_t GetSize() const { return m_buffer_size; }
+
+		void Invalidate();
+
+		// WARNING: The buffer handle can change for (almost) no reason.
+		// If you do _anything_ to the buffer, you'll need to call this
+		// again to see if we've recreated it in a vain attempt to outsmart
+		// the driver.
+		GLuint GetHandle() const { return m_buffer_handle; }
 		
-		void Bind();
+		void Bind() const;
 	private:
+		bool RecreateBuffer(const void *data = NULL);
 		GLuint m_buffer_handle;
 		BufferType m_buffer_type;
 		BufferUsage m_buffer_usage;
 		void *m_map_pointer;
 		size_t m_buffer_size;
 		bool m_invalidated;
+		bool m_buffer_shape_dirty;
+		bool m_faking_map;
 	};
 
 }