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Sauraen
2024-04-10 11:25:03 -07:00
parent 66d29b6030
commit 227a07e9f7
1 changed files with 19 additions and 9 deletions
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f3dex3.s
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@@ -2904,17 +2904,27 @@ lt_loop:
/*
lpv vCCC[4], (ltBufOfs + 0 - XXX)(curLight) // Xfrmed dir in elems 0-2
.if CFG_PROFILING_B
addi perfCounterA, perfCounterA, 2 // Increment lit vertex count by 2
.endif
vmulf $v29, $v14, $v13[4] // Normals X elems 0, 4 * first light dir
luv vPairLt, (ltBufOfs + 0)($3) // Total light level, init to ambient
vmacf $v29, $v15, $v13[5] // Normals Y elems 0, 4 * first light dir
lpv vDDD[0], (ltBufOfs + 8 - XXX)(curLight) // Xfrmed dir in elems 4-6
vmacf vAAA, vPairNrml, $v13[6] // Normals Z elems 0, 4 * first light dir
beq $3, altBaseReg, lt_post
move curLight, $3 // Point to ambient light
lt_loop:
vge vCCC, vAAA, $v31[2] // 0; clamp dot product to >= 0
vmulf $v29, $v14, vDDD[4] // Normals X elems 0, 4
addi curLight, curLight, -lightSize
vmacf $v29, $v15, vDDD[5] // Normals Y elems 0, 4
luv vBBB, (ltBufOfs + 0 - XXX)(curLight) // Light color
vmacf vAAA, vPairNrml, vDDD[6] // Normals Z elems 0, 4
lpv vDDD[0], (ltBufOfs + 8 - XXX)(curLight) // Xfrmed dir in elems 4-6
vlt $v29, $v31, $v31[4] // Set VCC to 11110000
vmrg vCCC, vCCC, vDDD // vCCC = light direction
vmulf vAAA, vCCC, vPairNrml // Light dir * normals
vmudh $v29, vOne, vAAA[0h] // Sum components of dot product
vmadh $v29, vOne, vAAA[1h]
vmadh vAAA, vOne, vAAA[2h]
vge vAAA, vAAA, $v31[2] // 0; clamp dot product to >= 0
vmudh $v29, vOne, vPairLt // Load accum mid with current light level
vmacf vPairLt, vBBB, vAAA[0h] // + light color * dot product
bne curLight, altBaseReg, lt_loop
vmacf vPairLt, vBBB, vCCC[0h] // + light color * dot product
*/
lt_post: