diff --git a/cinelerra-5.1/cinelerra/playback3d.C b/cinelerra-5.1/cinelerra/playback3d.C
index a7f185b..e45edc6 100644
--- a/cinelerra-5.1/cinelerra/playback3d.C
+++ b/cinelerra-5.1/cinelerra/playback3d.C
@@ -1491,11 +1491,14 @@ void Playback3D::convert_cmodel(Canvas *canvas,
 	if(
 		(output->get_opengl_state() == VFrame::TEXTURE ||
 		output->get_opengl_state() == VFrame::SCREEN) &&
+(
 // OpenGL has no floating point.
+/*
 		( (src_cmodel == BC_RGB888 && dst_cmodel == BC_RGB_FLOAT) ||
 		  (src_cmodel == BC_RGBA8888 && dst_cmodel == BC_RGBA_FLOAT) ||
 		  (src_cmodel == BC_RGB_FLOAT && dst_cmodel == BC_RGB888) ||
-		  (src_cmodel == BC_RGBA_FLOAT && dst_cmodel == BC_RGBA8888) ||
+		  (src_cmodel == BC_RGBA_FLOAT && dst_cmodel == BC_RGBA8888) || 
+*/
 // OpenGL sets alpha to 1 on import
 		  (src_cmodel == BC_RGB888 && dst_cmodel == BC_RGBA8888) ||
 		  (src_cmodel == BC_YUV888 && dst_cmodel == BC_YUVA8888) ||
diff --git a/cinelerra-5.1/guicast/bctexture.C b/cinelerra-5.1/guicast/bctexture.C
index 52787e1..cc50454 100644
--- a/cinelerra-5.1/guicast/bctexture.C
+++ b/cinelerra-5.1/guicast/bctexture.C
@@ -124,9 +124,9 @@ void BC_Texture::create_texture(int w, int h, int colormodel)
 		glGenTextures(1, (GLuint*)&texture_id);
 		glBindTexture(GL_TEXTURE_2D, (GLuint)texture_id);
 		glEnable(GL_TEXTURE_2D);
-		int internal_format = texture_components == 4 ? GL_RGBA8 : GL_RGB8 ;
+		int internal_format = texture_components == 4 ? GL_RGBA16F : GL_RGB16F ;
 		glTexImage2D(GL_TEXTURE_2D, 0, internal_format, texture_w, texture_h,
-				0, GL_RGBA, GL_UNSIGNED_BYTE, 0);
+				0, GL_RGBA, GL_FLOAT, 0);
 		window_id = BC_WindowBase::get_synchronous()->current_window->get_id();
 		BC_WindowBase::get_synchronous()->put_texture(texture_id,
 			texture_w, texture_h, texture_components);