From 2407c94762ea7c63b751b2838e228f803a62ede1 Mon Sep 17 00:00:00 2001
From: Jules Blok <jules.blok@gmail.com>
Date: Thu, 24 Mar 2016 23:52:42 +0100
Subject: [PATCH] gl_rendertarget: Always set all draw buffers.

---
 src/Layers/xrRenderPC_GL/gl_rendertarget.cpp | 25 +++++++++-----------
 1 file changed, 11 insertions(+), 14 deletions(-)

diff --git a/src/Layers/xrRenderPC_GL/gl_rendertarget.cpp b/src/Layers/xrRenderPC_GL/gl_rendertarget.cpp
index d40dd1534b3..f1971fe5cd1 100644
--- a/src/Layers/xrRenderPC_GL/gl_rendertarget.cpp
+++ b/src/Layers/xrRenderPC_GL/gl_rendertarget.cpp
@@ -19,28 +19,27 @@ void	CRenderTarget::u_setrt(const ref_rt& _1, const ref_rt& _2, const ref_rt& _3
 	VERIFY(_1);
 	dwWidth = _1->dwWidth;
 	dwHeight = _1->dwHeight;
-	GLuint cnt = 0;
 	GLenum buffers[3] = { GL_NONE };
 	if (_1)
 	{
-		buffers[cnt++] = GL_COLOR_ATTACHMENT0;
+		buffers[0] = GL_COLOR_ATTACHMENT0;
 		RCache.set_RT(_1->pRT, 0);
 	}
 	if (_2)
 	{
-		buffers[cnt++] = GL_COLOR_ATTACHMENT1;
+		buffers[1] = GL_COLOR_ATTACHMENT1;
 		RCache.set_RT(_2->pRT, 1);
 	}
 	if (_3)
 	{
-		buffers[cnt++] = GL_COLOR_ATTACHMENT2;
+		buffers[2] = GL_COLOR_ATTACHMENT2;
 		RCache.set_RT(_3->pRT, 2);
 	}
 	RCache.set_ZB(zb);
 	//	RImplementation.rmNormal				();
 	GLenum status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
 	VERIFY(status == GL_FRAMEBUFFER_COMPLETE);
-	CHK_GL(glDrawBuffers(cnt, buffers));
+	CHK_GL(glDrawBuffers(3, buffers));
 }
 
 void	CRenderTarget::u_setrt(const ref_rt& _1, const ref_rt& _2, GLuint zb)
@@ -48,51 +47,49 @@ void	CRenderTarget::u_setrt(const ref_rt& _1, const ref_rt& _2, GLuint zb)
 	VERIFY(_1);
 	dwWidth = _1->dwWidth;
 	dwHeight = _1->dwHeight;
-	GLuint cnt = 0;
 	GLenum buffers[2] = { GL_NONE };
 	if (_1)
 	{
-		buffers[cnt++] = GL_COLOR_ATTACHMENT0;
+		buffers[0] = GL_COLOR_ATTACHMENT0;
 		RCache.set_RT(_1->pRT, 0);
 	}
 	if (_2)
 	{
-		buffers[cnt++] = GL_COLOR_ATTACHMENT1;
+		buffers[1] = GL_COLOR_ATTACHMENT1;
 		RCache.set_RT(_2->pRT, 1);
 	}
 	RCache.set_ZB(zb);
 	//	RImplementation.rmNormal				();
 	GLenum status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
 	VERIFY(status == GL_FRAMEBUFFER_COMPLETE);
-	CHK_GL(glDrawBuffers(cnt, buffers));
+	CHK_GL(glDrawBuffers(2, buffers));
 }
 
 void	CRenderTarget::u_setrt(u32 W, u32 H, GLuint _1, GLuint _2, GLuint _3, GLuint zb)
 {
 	dwWidth = W;
 	dwHeight = H;
-	GLuint cnt = 0;
 	GLenum buffers[3] = { GL_NONE };
 	if (_1)
 	{
-		buffers[cnt++] = GL_COLOR_ATTACHMENT0;
+		buffers[0] = GL_COLOR_ATTACHMENT0;
 		RCache.set_RT(_1, 0);
 	}
 	if (_2)
 	{
-		buffers[cnt++] = GL_COLOR_ATTACHMENT1;
+		buffers[1] = GL_COLOR_ATTACHMENT1;
 		RCache.set_RT(_2, 1);
 	}
 	if (_3)
 	{
-		buffers[cnt++] = GL_COLOR_ATTACHMENT2;
+		buffers[2] = GL_COLOR_ATTACHMENT2;
 		RCache.set_RT(_3, 2);
 	}
 	RCache.set_ZB(zb);
 	//	RImplementation.rmNormal				();
 	GLenum status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
 	VERIFY(status == GL_FRAMEBUFFER_COMPLETE);
-	CHK_GL(glDrawBuffers(cnt, buffers));
+	CHK_GL(glDrawBuffers(3, buffers));
 }
 
 void	CRenderTarget::u_stencil_optimize	(eStencilOptimizeMode eSOM)