Add instancing support to standard shaders and RenderMethod

[libs/gl.git] / shaderlib / occluder.glsl

diff --git a/shaderlib/occluder.glsl b/shaderlib/occluder.glsl
index 6d6cd56074e7c67aa1f3d9fc3eb2e525fd75fef1..a4d876ecef40062decfb2cb255b0200980ed3413 100644 (file)
--- a/shaderlib/occluder.glsl
+++ b/shaderlib/occluder.glsl
@@ -8,6 +8,7 @@ layout(set=1) uniform AlphaCutoff
 layout(set=1) uniform sampler2D alpha_map;
 
 layout(constant_id=auto) const bool use_alpha_cutoff = false;
+layout(constant_id=auto) const bool use_instancing = false;
 
 #pragma MSP stage(vertex)
 virtual vec4 get_vertex_position()
@@ -17,7 +18,10 @@ virtual vec4 get_vertex_position()
 
 virtual mat4 get_vertex_transform()
 {
-       return world_obj_matrix;
+       if(use_instancing)
+               return transpose(mat4(instance_transform[0], instance_transform[1], instance_transform[2], vec4(0.0, 0.0, 0.0, 1.0)));
+       else
+               return world_obj_matrix;
 }
 
 virtual void clipping(vec3 eye_vertex)