[Bf-blender-cvs] [49ae0c5] compositor-2016: Fix T48533: camera node view vector wrong for Cycles GLSL.

[Ralf Hölzemer]

Commit: 49ae0c50d947c58e756f9f541382f438f1138cc7
Author: Ralf Hölzemer
Date:   Sat May 28 11:34:08 2016 +0200
Branches: compositor-2016
https://developer.blender.org/rB49ae0c50d947c58e756f9f541382f438f1138cc7

Fix T48533: camera node view vector wrong for Cycles GLSL.

Reviewed By: brecht

Differential Revision: https://developer.blender.org/D2033

===================================================================

M	source/blender/nodes/shader/nodes/node_shader_camera.c

===================================================================

diff --git a/source/blender/nodes/shader/nodes/node_shader_camera.c b/source/blender/nodes/shader/nodes/node_shader_camera.c
index 49ebb15..3bdb5c3 100644
--- a/source/blender/nodes/shader/nodes/node_shader_camera.c
+++ b/source/blender/nodes/shader/nodes/node_shader_camera.c
@@ -54,7 +54,15 @@ static void node_shader_exec_camera(void *data, int UNUSED(thread), bNode *UNUSE
 
 static int gpu_shader_camera(GPUMaterial *mat, bNode *UNUSED(node), bNodeExecData *UNUSED(execdata), GPUNodeStack *in, GPUNodeStack *out)
 {
-	return GPU_stack_link(mat, "camera", in, out, GPU_builtin(GPU_VIEW_POSITION));
+	GPUNodeLink *viewvec;
+
+	viewvec = GPU_builtin(GPU_VIEW_POSITION);
+
+	/* Blender has negative Z, Cycles positive Z convention */
+	if (GPU_material_use_new_shading_nodes(mat))
+		GPU_link(mat, "invert_z", viewvec, &viewvec);
+
+	return GPU_stack_link(mat, "camera", in, out, viewvec);
 }
 
 void register_node_type_sh_camera(void)