X-Git-Url: https://git.ucc.asn.au/?p=ipdf%2Fcode.git;a=blobdiff_plain;f=src%2Fgraphicsbuffer.h;h=3dbb6fb9d136776b900474551b294c33645d5c07;hp=15e5b427da66a6e599563d7ad9bdf69dc1983454;hb=35e78b378435e37ffdb6e53a97f6fa0998999f67;hpb=81786f2f649a1d73ef8d4e40dc03beec4fd53698

diff --git a/src/graphicsbuffer.h b/src/graphicsbuffer.h
index 15e5b42..3dbb6fb 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
 	{
@@ -21,6 +20,7 @@ namespace IPDF
 			BufferTypePixelPack,		// Pixel Pack buffer
 			BufferTypePixelUnpack,
 			BufferTypeUniform,		// Uniform/Constant buffer
+			BufferTypeTexture,		// I was hoping to avoid this one.
 			BufferTypeDrawIndirect,
 		};
 		
@@ -52,15 +52,27 @@ namespace IPDF
 		void UploadRange(size_t length, intptr_t offset, const void *data);
 
 		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 = nullptr);
 		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;
 	};
 
 }