1 files changed, 42 insertions, 0 deletions
diff --git a/mp/src/materialsystem/stdshaders/VertexLitGeneric_EnvmappedBumpmapV2_MultByAlpha.psh b/mp/src/materialsystem/stdshaders/VertexLitGeneric_EnvmappedBumpmapV2_MultByAlpha.psh
new file mode 100644
index 00000000..9fa7db3e
--- /dev/null
+++ b/mp/src/materialsystem/stdshaders/VertexLitGeneric_EnvmappedBumpmapV2_MultByAlpha.psh
@@ -0,0 +1,42 @@
+ps.1.1
+
+;------------------------------------------------------------------------------
+; Environment mapping on a bumped surface
+; t0 - Normalmap
+; t3 - Cube environment map (*must* be a cube map!)
+;
+; c0 - color to multiply the results by
+; Input texture coords required here are a little wonky.
+; tc0.uv <- U,V into the normal map
+; tc1.uvw, tc2.uvw, tc3.uvw <- 3x3 matrix transform 
+;								from tangent space->env map space
+; tc1.q, tc2.q, tc3.q <- eye vector in env map space
+;------------------------------------------------------------------------------
+; This version doesn't multiply by lighting.
+
+; Get the 3-vector from the normal map
+tex t0
+
+; Perform matrix multiply to get a local normal bump.  Then
+; reflect the eye vector through the normal and sample from 
+; a cubic environment map.
+texm3x3pad t1, t0_bx2
+texm3x3pad t2, t0_bx2		
+texm3x3vspec t3, t0_bx2
+
+; result goes in output color
+mul r0.rgb, t3, c0 ; constant color
++mov r0.a, c0.a
+
+mul		r1.rgb, r0, r0
+lrp		r0.rgb, c1, r1, r0 ; blend between color and color * color
+dp3		r1.rgb, r0, c3
+lrp		r0.rgb, c2, r0, r1 ; blend between color and greyscale
+
+; Multiply the output color by the alpha channel of the normal map.
+mul r0.rgb, t0.a, r0
+
+
+
+
+