medfall

commit 2f5e3e77f309b8a00bbc694670b2e69599d175c1
parent 8db56f9768069c4a4f6f616f6011b14d8838a45e
Author: Michael Savage <mikejsavage@gmail.com>
Date:   Mon Sep  5 22:03:05 -0700

Don't try to render uninitialised BTTs

Diffstat:
gpubtt.cc
 | 
4
++++
gpubtt.h
 | 
2
+-
2 files changed, 5 insertions(+), 1 deletion(-)
diff --git a/gpubtt.cc b/gpubtt.cc
@@ -151,9 +151,13 @@ void gpubtt_destroy( GPUBTT * const gpubtt ) {
 	glDeleteTextures( 1, &gpubtt->tex_normals );
 	glDeleteBuffers( 1, &gpubtt->vbo_verts );
 	glDeleteVertexArrays( 1, &gpubtt->vao );
+
+	gpubtt->vbo_verts = 0;
 }
 
 void gpubtt_render( const GPUBTT * const gpubtt, const GLuint un_normals ) {
+	if( gpubtt->vbo_verts == 0 ) return;
+
 	glBindVertexArray( gpubtt->vao );
 
 	glActiveTexture( GL_TEXTURE0 );
diff --git a/gpubtt.h b/gpubtt.h
@@ -8,7 +8,7 @@
 
 struct GPUBTT {
 	GLuint vao;
-	GLuint vbo_verts;
+	GLuint vbo_verts = 0;
 	GLuint tex_normals;
 	GLuint tex_horizons;
 	u32 num_verts;