X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=source%2Fcore%2Fframebuffer.cpp;h=1dd2f61f9bab10139772b8619075370df41b2849;hp=ffd92a22f8329e05b2c604802d05467a3065f555;hb=ad574f042d59513eec36af64c38aaf9abe6deed2;hpb=fc55a95ad69fbaaefde3071712bf36a470970bc0

diff --git a/source/core/framebuffer.cpp b/source/core/framebuffer.cpp
index ffd92a22..1dd2f61f 100644
--- a/source/core/framebuffer.cpp
+++ b/source/core/framebuffer.cpp
@@ -1,5 +1,7 @@
 #include <msp/gl/extensions/arb_draw_buffers.h>
 #include <msp/gl/extensions/arb_direct_state_access.h>
+#include <msp/gl/extensions/arb_internalformat_query.h>
+#include <msp/gl/extensions/arb_internalformat_query2.h>
 #include <msp/gl/extensions/ext_framebuffer_object.h>
 #include <msp/gl/extensions/ext_texture_array.h>
 #include <msp/gl/extensions/ext_texture3d.h>
@@ -83,6 +85,19 @@ void Framebuffer::set_format(const FrameFormat &fmt)
 	if(fmt.empty())
 		throw invalid_argument("Framebuffer::set_format");
 
+	if(ARB_internalformat_query && ARB_internalformat_query2)
+	{
+		unsigned target = (fmt.get_samples()>1 ? GL_TEXTURE_2D_MULTISAMPLE : GL_TEXTURE_2D);
+		for(FrameAttachment a: fmt)
+		{
+			unsigned pf = get_gl_pixelformat(get_attachment_pixelformat(a));
+			int supported = 0;
+			glGetInternalformativ(target, pf, GL_FRAMEBUFFER_RENDERABLE, 1, &supported);
+			if(supported!=GL_FULL_SUPPORT)
+				throw invalid_argument("Framebuffer::set_format");
+		}
+	}
+
 	format = fmt;
 	attachments.resize(format.size());
 }