X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fcore%2Fframebuffer.h;h=0b9af1efd167e47addd3572eff9db4e80b87d3e1;hb=f19366d32cc29287a2730cfba90893e407754081;hp=f2fbfea40e19bca9577cd97a540d6bfcfb3b1673;hpb=6353307898cd397e2bcde13e2448a8a678a60004;p=libs%2Fgl.git

diff --git a/source/core/framebuffer.h b/source/core/framebuffer.h
index f2fbfea4..0b9af1ef 100644
--- a/source/core/framebuffer.h
+++ b/source/core/framebuffer.h
@@ -2,49 +2,23 @@
 #define MSP_GL_FRAMEBUFFER_H_
 
 #include <vector>
+#include "color.h"
+#include "framebuffer_backend.h"
 #include "frameformat.h"
-#include "gl.h"
 #include "texturecube.h"
-#include <msp/gl/extensions/arb_geometry_shader4.h>
-#include <msp/gl/extensions/ext_framebuffer_multisample.h>
-#include <msp/gl/extensions/ext_framebuffer_object.h>
-#include <msp/gl/extensions/nv_fbo_color_attachments.h>
 
 namespace Msp {
 namespace GL {
 
-class Texture;
 class Texture2D;
 class Texture2DMultisample;
 class Texture3D;
 class WindowView;
 
-enum FramebufferStatus
-{
-	FRAMEBUFFER_INCOMPLETE_ATTACHMENT         = GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT,
-	FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT = GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT,
-	FRAMEBUFFER_INCOMPLETE_DIMENSIONS         = GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_EXT,
-	FRAMEBUFFER_INCOMPLETE_FORMATS            = GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT,
-	FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER        = GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER,
-	FRAMEBUFFER_INCOMPLETE_READ_BUFFER        = GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER,
-	FRAMEBUFFER_INCOMPLETE_MULTISAMPLE        = GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE,
-	FRAMEBUFFER_INCOMPLETE_LAYER_COUNT        = GL_FRAMEBUFFER_INCOMPLETE_LAYER_COUNT_ARB,
-	FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS      = GL_FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS,
-	FRAMEBUFFER_UNSUPPORTED                   = GL_FRAMEBUFFER_UNSUPPORTED,
-	FRAMEBUFFER_COMPLETE                      = GL_FRAMEBUFFER_COMPLETE
-};
-
-enum BufferBits
-{
-	COLOR_BUFFER_BIT   = GL_COLOR_BUFFER_BIT,
-	DEPTH_BUFFER_BIT   = GL_DEPTH_BUFFER_BIT,
-	STENCIL_BUFFER_BIT = GL_STENCIL_BUFFER_BIT
-};
-
 class framebuffer_incomplete: public std::runtime_error
 {
 public:
-	framebuffer_incomplete(FramebufferStatus);
+	framebuffer_incomplete(const std::string &);
 	virtual ~framebuffer_incomplete() throw() { }
 };
 
@@ -60,8 +34,10 @@ must be attached for the framebuffer to be usable.
 Requires the GL_EXT_framebuffer_object extension.  The blit functions require
 the GL_EXT_framebuffer_blit extension.
 */
-class Framebuffer
+class Framebuffer: public FramebufferBackend
 {
+	friend FramebufferBackend;
+
 private:
 	struct Attachment
 	{
@@ -74,15 +50,13 @@ private:
 		void clear();
 	};
 
-	unsigned id;
 	FrameFormat format;
 	std::vector<Attachment> attachments;
 	unsigned width;
 	unsigned height;
-	mutable FramebufferStatus status;
 	mutable unsigned dirty;
 
-	Framebuffer(unsigned);
+	Framebuffer(bool);
 public:
 	/** Creates an empty framebuffer.  Format must be set before textures can
 	be attached. */
@@ -94,11 +68,6 @@ public:
 	/** Creates a framebuffer and sets its format. */
 	Framebuffer(const FrameFormat &);
 
-private:
-	void init();
-public:
-	~Framebuffer();
-
 	/** Sets the format of the framebuffer.  Once the format is set, it can't
 	be changed. */
 	void set_format(const FrameFormat &);
@@ -129,25 +98,29 @@ public:
 
 	void resize(const WindowView &);
 
-	/** Returns FRAMEBUFFER_COMPLETE if the framebuffer is complete and can be
-	rendered to, or one of the error status codes otherwise. */
-	FramebufferStatus get_status() const { return status; }
-
 	/** Ensures that the framebuffer is complete, throwing an exception if it
 	isn't. */
 	void require_complete() const;
 
 	void refresh() const { if(dirty) update(); }
 
-	unsigned get_id() const { return id; }
-
-	void set_debug_name(const std::string &);
+	using FramebufferBackend::set_debug_name;
 
 	static Framebuffer &system();
 };
 
-inline BufferBits operator|(BufferBits a, BufferBits b)
-{ return static_cast<BufferBits>(static_cast<int>(a)|static_cast<int>(b)); }
+
+union ClearValue
+{
+	Color color;
+	struct
+	{
+		float depth;
+		int stencil;
+	} depth_stencil;
+
+	ClearValue(): color(0.0f, 0.0f, 0.0f, 0.0f) { }
+};
 
 } // namespace GL
 } // namespace Msp