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-rw-r--r--plugins/gpu_unai/gpu_inner_light_arm.h135
1 files changed, 82 insertions, 53 deletions
diff --git a/plugins/gpu_unai/gpu_inner_light_arm.h b/plugins/gpu_unai/gpu_inner_light_arm.h
index a1c3628..7bd5890 100644
--- a/plugins/gpu_unai/gpu_inner_light_arm.h
+++ b/plugins/gpu_unai/gpu_inner_light_arm.h
@@ -14,70 +14,99 @@
////////////////////////////////////////////////////////////////////////////////
GPU_INLINE uint_fast16_t gpuLightingRGBARM(u32 gCol)
{
- uint_fast16_t out = 0x03E0; // don't need the mask after starting to write output
- u32 tmp;
+ uint_fast16_t out = 0x03E0; // don't need the mask after starting to write output
+ u32 tmp;
- asm ("and %[tmp], %[gCol], %[out]\n\t" // tmp holds 0x000000bbbbb00000
- "and %[out], %[out], %[gCol], lsr #0x0B\n\t" // out holds 0x000000ggggg00000
- "orr %[tmp], %[out], %[tmp], lsl #0x05\n\t" // tmp holds 0x0bbbbbggggg00000
- "orr %[out], %[tmp], %[gCol], lsr #0x1B\n\t" // out holds 0x0bbbbbgggggrrrrr
- : [out] "+&r" (out), [tmp] "=&r" (tmp)
- : [gCol] "r" (gCol)
- );
+ asm ("and %[tmp], %[gCol], %[out]\n\t" // tmp holds 0x000000bbbbb00000
+ "and %[out], %[out], %[gCol], lsr #0x0B\n\t" // out holds 0x000000ggggg00000
+ "orr %[tmp], %[out], %[tmp], lsl #0x05\n\t" // tmp holds 0x0bbbbbggggg00000
+ "orr %[out], %[tmp], %[gCol], lsr #0x1B\n\t" // out holds 0x0bbbbbgggggrrrrr
+ : [out] "+&r" (out), [tmp] "=&r" (tmp)
+ : [gCol] "r" (gCol)
+ );
- return out;
+ return out;
}
-
+////////////////////////////////////////////////////////////////////////////////
+// Apply fast (low-precision) 5-bit lighting to bgr555 texture color:
+//
+// INPUT:
+// 'r5','g5','b5' are unsigned 5-bit color values, value of 15
+// is midpoint that doesn't modify that component of texture
+// 'uSrc' input: mbbbbbgggggrrrrr
+// ^ bit 16
+// RETURNS:
+// u16 output: mbbbbbgggggrrrrr
+// Where 'X' are fixed-pt bits.
+////////////////////////////////////////////////////////////////////////////////
GPU_INLINE uint_fast16_t gpuLightingTXTARM(uint_fast16_t uSrc, u8 r5, u8 g5, u8 b5)
{
- uint_fast16_t out = 0x03E0;
- u32 db, dg;
- asm ("and %[dg], %[out], %[src] \n\t"
- "orr %[dg], %[dg], %[g5] \n\t"
- "and %[db], %[out], %[src], lsr #0x05 \n\t"
- "ldrb %[dg], [%[lut], %[dg]] \n\t"
- "and %[out], %[out], %[src], lsl #0x05 \n\t"
- "orr %[out], %[out], %[r5] \n\t"
- "orr %[db], %[db], %[b5] \n\t"
- "ldrb %[out], [%[lut], %[out]] \n\t"
- "ldrb %[db], [%[lut], %[db]] \n\t"
- "tst %[src], #0x8000\n\t"
- "orr %[out], %[out], %[dg], lsl #0x05 \n\t"
- "orrne %[out], %[out], #0x8000\n\t"
- "orr %[out], %[out], %[db], lsl #0x0A \n\t"
- : [out] "=&r" (out), [db] "=&r" (db), [dg] "=&r" (dg)
- : [r5] "r" (r5), [g5] "r" (g5), [b5] "r" (b5),
- [lut] "r" (gpu_unai.LightLUT), [src] "r" (uSrc), "0" (out)
- : "cc");
- return out;
+ uint_fast16_t out = 0x03E0;
+ u32 db, dg;
+
+ // Using `g` for src, `G` for dest
+ asm ("and %[dg], %[out], %[src] \n\t" // dg holds 0x000000ggggg00000
+ "orr %[dg], %[dg], %[g5] \n\t" // dg holds 0x000000gggggGGGGG
+ "and %[db], %[out], %[src], lsr #0x05 \n\t" // db holds 0x000000bbbbb00000
+ "ldrb %[dg], [%[lut], %[dg]] \n\t" // dg holds result 0x00000000000ggggg
+ "and %[out], %[out], %[src], lsl #0x05 \n\t" // out holds 0x000000rrrrr00000
+ "orr %[out], %[out], %[r5] \n\t" // out holds 0x000000rrrrrRRRRR
+ "orr %[db], %[db], %[b5] \n\t" // db holds 0x000000bbbbbBBBBB
+ "ldrb %[out], [%[lut], %[out]] \n\t" // out holds result 0x00000000000rrrrr
+ "ldrb %[db], [%[lut], %[db]] \n\t" // db holds result 0x00000000000bbbbb
+ "tst %[src], #0x8000\n\t" // check whether msb was set on uSrc
+ "orr %[out], %[out], %[dg], lsl #0x05 \n\t" // out holds 0x000000gggggrrrrr
+ "orrne %[out], %[out], #0x8000\n\t" // add msb to out if set on uSrc
+ "orr %[out], %[out], %[db], lsl #0x0A \n\t" // out holds 0xmbbbbbgggggrrrrr
+ : [out] "=&r" (out), [db] "=&r" (db), [dg] "=&r" (dg)
+ : [r5] "r" (r5), [g5] "r" (g5), [b5] "r" (b5),
+ [lut] "r" (gpu_unai.LightLUT), [src] "r" (uSrc), "0" (out)
+ : "cc");
+ return out;
}
+////////////////////////////////////////////////////////////////////////////////
+// Apply fast (low-precision) 5-bit Gouraud lighting to bgr555 texture color:
+//
+// INPUT:
+// 'gCol' is a packed Gouraud u32 fixed-pt 8.3:8.3:8.2 rgb triplet, value of
+// 15.0 is midpoint that does not modify color of texture
+// gCol input : rrrrrXXXXXXgggggXXXXXXbbbbbXXXXX
+// ^ bit 31
+// 'uSrc' input: mbbbbbgggggrrrrr
+// ^ bit 16
+// RETURNS:
+// u16 output: mbbbbbgggggrrrrr
+// Where 'X' are fixed-pt bits, '0' is zero-padding, and '-' is don't care
+////////////////////////////////////////////////////////////////////////////////
GPU_INLINE uint_fast16_t gpuLightingTXTGouraudARM(uint_fast16_t uSrc, u32 gCol)
{
- uint_fast16_t out = 0x03E0; // don't need the mask after starting to write output
- u32 db,dg,gtmp;
- asm ("and %[dg], %[out], %[src] \n\t"
- "and %[gtmp],%[out], %[gCol], lsr #0x0B \n\t"
- "and %[db], %[out], %[src], lsr #0x05 \n\t"
- "orr %[dg], %[dg], %[gtmp], lsr #0x05 \n\t"
- "and %[gtmp],%[out], %[gCol] \n\t"
- "ldrb %[dg], [%[lut], %[dg]] \n\t"
- "and %[out], %[out], %[src], lsl #0x05 \n\t"
- "orr %[out], %[out], %[gCol], lsr #0x1B \n\t"
- "orr %[db], %[db], %[gtmp], lsr #0x05 \n\t"
- "ldrb %[out], [%[lut], %[out]] \n\t"
- "ldrb %[db], [%[lut], %[db]] \n\t"
- "tst %[src], #0x8000\n\t"
- "orr %[out], %[out], %[dg], lsl #0x05 \n\t"
- "orrne %[out], %[out], #0x8000\n\t"
- "orr %[out], %[out], %[db], lsl #0x0A \n\t"
- : [out] "=&r" (out), [db] "=&r" (db), [dg] "=&r" (dg),
- [gtmp] "=&r" (gtmp) \
- : [gCol] "r" (gCol), [lut] "r" (gpu_unai.LightLUT), "0" (out), [src] "r" (uSrc)
- : "cc");
+ uint_fast16_t out = 0x03E0; // don't need the mask after starting to write output
+ u32 db,dg,gtmp;
+
+ // Using `g` for src, `G` for dest
+ asm ("and %[dg], %[out], %[src] \n\t" // dg holds 0x000000ggggg00000
+ "and %[gtmp],%[out], %[gCol], lsr #0x0B \n\t" // gtmp holds 0x000000GGGGG00000
+ "and %[db], %[out], %[src], lsr #0x05 \n\t" // db holds 0x000000bbbbb00000
+ "orr %[dg], %[dg], %[gtmp], lsr #0x05 \n\t" // dg holds 0x000000gggggGGGGG
+ "and %[gtmp],%[out], %[gCol] \n\t" // gtmp holds 0x000000BBBBB00000
+ "ldrb %[dg], [%[lut], %[dg]] \n\t" // dg holds result 0x00000000000ggggg
+ "and %[out], %[out], %[src], lsl #0x05 \n\t" // out holds 0x000000rrrrr00000
+ "orr %[out], %[out], %[gCol], lsr #0x1B \n\t" // out holds 0x000000rrrrrRRRRR
+ "orr %[db], %[db], %[gtmp], lsr #0x05 \n\t" // db holds 0x000000bbbbbBBBBB
+ "ldrb %[out], [%[lut], %[out]] \n\t" // out holds result 0x00000000000rrrrr
+ "ldrb %[db], [%[lut], %[db]] \n\t" // db holds result 0x00000000000bbbbb
+ "tst %[src], #0x8000\n\t" // check whether msb was set on uSrc
+ "orr %[out], %[out], %[dg], lsl #0x05 \n\t" // out holds 0x000000gggggrrrrr
+ "orrne %[out], %[out], #0x8000\n\t" // add msb to out if set on uSrc
+ "orr %[out], %[out], %[db], lsl #0x0A \n\t" // out holds 0xmbbbbbgggggrrrrr
+ : [out] "=&r" (out), [db] "=&r" (db), [dg] "=&r" (dg),
+ [gtmp] "=&r" (gtmp) \
+ : [gCol] "r" (gCol), [lut] "r" (gpu_unai.LightLUT), "0" (out), [src] "r" (uSrc)
+ : "cc");
- return out;
+ return out;
}
#endif //_OP_LIGHT_ARM_H_
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-26 17:47:10 +0000