X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fbackends%2Fopengl%2Fsystemframebuffer.cpp;fp=source%2Fbackends%2Fopengl%2Fsystemframebuffer.cpp;h=dbfe0b823b77f3333ef9bef0f36d2f421a86947a;hb=b9e720f36185c6fe4d39a1056ecb88dec0ce950d;hp=0000000000000000000000000000000000000000;hpb=4080571d24c1734a9188ee7fac38cf3180325adf;p=libs%2Fgl.git

diff --git a/source/backends/opengl/systemframebuffer.cpp b/source/backends/opengl/systemframebuffer.cpp
new file mode 100644
index 00000000..dbfe0b82
--- /dev/null
+++ b/source/backends/opengl/systemframebuffer.cpp
@@ -0,0 +1,43 @@
+#include <msp/gl/extensions/ext_framebuffer_object.h>
+#include "gl.h"
+#include "systemframebuffer.h"
+
+namespace Msp {
+namespace GL {
+
+OpenGLSystemFramebuffer::OpenGLSystemFramebuffer():
+	Framebuffer(true)
+{
+	FrameFormat sys_format;
+
+	if(EXT_framebuffer_object)
+	{
+		int value;
+		glGetFramebufferAttachmentParameteriv(GL_DRAW_FRAMEBUFFER, GL_BACK, GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE, &value);
+		if(value==GL_NONE)
+			glGetFramebufferAttachmentParameteriv(GL_DRAW_FRAMEBUFFER, GL_FRONT, GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE, &value);
+		if(value!=GL_NONE)
+			sys_format = (sys_format, COLOR_ATTACHMENT);
+
+		glGetFramebufferAttachmentParameteriv(GL_DRAW_FRAMEBUFFER, GL_DEPTH, GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE, &value);
+		if(value!=GL_NONE)
+			sys_format = (sys_format, DEPTH_ATTACHMENT);
+
+		glGetFramebufferAttachmentParameteriv(GL_DRAW_FRAMEBUFFER, GL_STENCIL, GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE, &value);
+		if(value!=GL_NONE)
+			sys_format = (sys_format, STENCIL_ATTACHMENT);
+	}
+	else
+		// Make a guess if we can't query the format
+		sys_format = (COLOR_ATTACHMENT, DEPTH_ATTACHMENT);
+
+	set_system_format(sys_format);
+}
+
+void OpenGLSystemFramebuffer::resize(unsigned w, unsigned h)
+{
+	resize_system(w, h);
+}
+
+} // namespace GL
+} // namespace Msp