First Commit

externals/nihstro/examples/assembler/cube/data/test.vsh

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+// setup constants
+.alias myconst c32 as (1.0, 0.0, 0.5, 1.0)
+
+// setup output map
+.alias outpos  o0      as position
+.alias outcol  o1      as color
+.alias outtex0 o2.xyzw as texcoord0 // Would like to use .xy instead, but this is not supported by ctrulib currently
+.alias outtex1 o3.xyzw as texcoord1
+.alias outtex2 o4.xyzw as texcoord2
+
+// setup uniform map, for use with SHDR_GetUniformRegister
+.alias projection     c0  // -c3
+.alias modelview      c4  // -c7
+.alias lightDirection c8
+.alias lightAmbient   c9
+
+main:
+	mov r1.xyz,  v0.xyz
+	mov r1.w,    myconst.w
+
+mdvl:  // tempreg = mdlvMtx * in.pos
+	dp4 r0.x,  modelview[0],  r1
+	dp4 r0.y,  modelview[1],  r1
+	dp4 r0.z,  modelview[2],  r1
+	mov r0.w,  myconst.w
+
+proj:  // result.pos = projMtx * tempreg
+	dp4 outpos.x,  projection[0],  r0
+	dp4 outpos.y,  projection[1],  r0
+	dp4 outpos.z,  projection[2],  r0
+	dp4 outpos.w,  projection[3],  r0
+
+tex:  // result.texcoord = in.texcoord
+	mov outtex0,  v1
+	mov outtex1,  myconst.yyyw
+	mov outtex2,  myconst.yyyw
+
+col:  // Hacky lighting: color = ambient.xyz + clamp(dot(L,N), 1.0) * ambient.www
+	dp3 r0.xyz,     lightDirection.xyz, v2.xyz
+	max r0.xyz,     myconst.yyy,        r0.xyz
+	mul r0.xyz,     lightAmbient.www,   r0.xyz
+	add outcol.xyz, lightAmbient.xyz,   r0.xyz
+	mov outcol.w,   myconst.w
+
+	nop
+	end
+
+endmain: