Latest compatible version of Classicube from the original GitHub repository (https://github.com/ClassiCube/ClassiCube) that can be compiled on Classicube for PowerMac PPC running Mac OS X 10.4.

misc/3ds/coloured.v.pica

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+; Vertex shader for rendering coloured vertices for PICA200 GPU on the Nintendo 3DS
+; ==================================================================================
+
+; Uniforms
+.fvec MVP[4];
+
+; Constants
+.constf ONE_DIV_255(0.003921568627, 0.003921568627, 0.003921568627, 0.003921568627)
+
+; Outputs
+.out out_pos position
+.out out_col color
+
+; Inputs (defined as aliases for convenience)
+.alias in_pos v0
+.alias in_col v1
+
+.proc main
+	; r0 = in_pos
+	mov r0, in_pos
+
+	; out_pos = MVP * r0
+	dp4 out_pos.x, MVP[0], r0
+	dp4 out_pos.y, MVP[1], r0
+	dp4 out_pos.z, MVP[2], r0
+	dp4 out_pos.w, MVP[3], r0
+
+	; out_col = in_col * ONE_DIV_255
+	mul out_col, ONE_DIV_255, in_col
+	
+	end
+.end
+