# Fixed self-shadowing in Atlas

(The ShadowMap object was being destroyed/recreated, and thus forgot
that it had been told to use depth textures)

This was SVN commit r3916.

source/renderer/Renderer.cpp

@@ -530,8 +530,7 @@ bool CRenderer::Open(int width, int height, int depth)
 void CRenderer::Resize(int width,int height)
 {
 	// need to recreate the shadow map object to resize the shadow texture
-	delete m->shadow;
-	m->shadow = new ShadowMap;
+	m->shadow->RecreateTexture();
 
 	m_Width = width;
 	m_Height = height;

source/renderer/ShadowMap.cpp

@@ -96,6 +96,22 @@ ShadowMap::~ShadowMap()
 	delete m;
 }
 
+///////////////////////////////////////////////////////////////////////////////////////////////////
+// Force the texture/buffer/etc to be recreated, particularly when the renderer's
+// size has changed
+void ShadowMap::RecreateTexture()
+{
+	if (m->Texture)
+		glDeleteTextures(1, &m->Texture);
+	if (m->Framebuffer)
+		pglDeleteFramebuffersEXT(1, &m->Framebuffer);
+
+	m->Texture = 0;
+	m->Framebuffer = 0;
+
+	// (Texture will be constructed in next SetupFrame)
+}
+
 //////////////////////////////////////////////////////////////////////////////
 // SetupFrame: camera and light direction for this frame
 void ShadowMap::SetupFrame(const CCamera& camera, const CVector3D& lightdir)
@@ -234,7 +250,7 @@ void ShadowMapInternals::CalcShadowMatrices()
 
 
 
-///////////////////////////////////////////////////////////////////////////////////////////////////
+//////////////////////////////////////////////////////////////////////////
 // Create the shadow map
 void ShadowMapInternals::CreateTexture()
 {

source/renderer/ShadowMap.h

@@ -35,6 +35,13 @@ public:
 	ShadowMap();
 	~ShadowMap();
 
+	/**
+	 * RecreateTexture: Destroy the current shadow texture and force creation of
+	 * a new one. Useful when the renderer's size has changed and the texture
+	 * should be resized too.
+	 */
+	void RecreateTexture();
+
 	/**
 	 * GetUseDepthTexture: Return whether rendering uses a depth texture (instead of
 	 * a luminance texture).