From: Mikko Rasa <tdb@tdb.fi>
Date: Sat, 5 Nov 2016 15:12:20 +0000 (+0200)
Subject: Also convert RenderBuffer formats to sized variants if possible
X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=commitdiff_plain;h=96fb9a0237a7c3f6fc23406ce50cd1c6fe484111

Also convert RenderBuffer formats to sized variants if possible
---

diff --git a/source/renderbuffer.cpp b/source/renderbuffer.cpp
index 17d36846..50983622 100644
--- a/source/renderbuffer.cpp
+++ b/source/renderbuffer.cpp
@@ -21,8 +21,20 @@ Renderbuffer::~Renderbuffer()
 	glDeleteRenderbuffers(1, &id);
 }
 
+PixelFormat Renderbuffer::normalize_format(PixelFormat fmt)
+{
+	if(!get_component_size(fmt) && MSP_sized_internal_formats)
+	{
+		unsigned size = (fmt==DEPTH_COMPONENT ? get_gl_api()==OPENGL_ES2 ? 2 : 4 : 1);
+		return get_sized_pixelformat(fmt, size);
+	}
+
+	return fmt;
+}
+
 void Renderbuffer::storage(PixelFormat fmt, unsigned wd, unsigned ht)
 {
+	fmt = normalize_format(fmt);
 	require_pixelformat(fmt);
 	width = wd;
 	height = ht;
@@ -38,6 +50,7 @@ void Renderbuffer::storage(PixelFormat fmt, unsigned wd, unsigned ht)
 void Renderbuffer::storage_multisample(unsigned samples, PixelFormat fmt, unsigned wd, unsigned ht)
 {
 	static Require _req(EXT_framebuffer_multisample);
+	fmt = normalize_format(fmt);
 	require_pixelformat(fmt);
 
 	width = wd;
diff --git a/source/renderbuffer.h b/source/renderbuffer.h
index efcf5658..0ccf4967 100644
--- a/source/renderbuffer.h
+++ b/source/renderbuffer.h
@@ -31,6 +31,10 @@ public:
 	unsigned get_width() const { return width; }
 	unsigned get_height() const { return height; }
 
+private:
+	static PixelFormat normalize_format(PixelFormat);
+
+public:
 	/** Allocates storage for the renderbuffer. */
 	void storage(PixelFormat fmt, unsigned wd, unsigned ht);