; Vertex shader for rendering coloured vertices for PICA200 GPU on the Nintendo 3DS
; ==================================================================================

; Uniforms (layout common to all shaders)
.alias MVP_0      c0
.alias MVP_1      c1
.alias MVP_2      c2
.alias MVP_3      c3
.alias TEX_OFFSET c4

; Constants (initialised in Graphics_3DS.c)
.alias ONE_DIV_255 c5

; 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
	; out_pos = MVP * in_pos
	dp4 out_pos.x, MVP_0, in_pos
	dp4 out_pos.y, MVP_1, in_pos
	dp4 out_pos.z, MVP_2, in_pos
	dp4 out_pos.w, MVP_3, in_pos

	; out_col = in_col * ONE_DIV_255
	mul out_col, ONE_DIV_255, in_col
	
	end
.end