From: notaz <notasas@gmail.com>
Date: Wed, 27 Nov 2024 00:14:03 +0000 (+0200)
Subject: gpu_unai: asm part 3
X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=eb54d5413cd037964c492ad6b237f70fdc3abe97;p=pcsx_rearmed.git

gpu_unai: asm part 3
---

diff --git a/plugins/gpu_unai/gpu_arm.S b/plugins/gpu_unai/gpu_arm.S
index f0684992..b56951f9 100644
--- a/plugins/gpu_unai/gpu_arm.S
+++ b/plugins/gpu_unai/gpu_arm.S
@@ -7,6 +7,7 @@
 
 #include "arm_features.h"
 
+.syntax unified
 .text
 .align 2
 
@@ -32,13 +33,13 @@
     ldrh    r8, [r2, r8]
     ldrh    lr, [r2, lr]
     tst     r6, r6
-    strneh  r6, [r0, #\obase+0]
+    strhne  r6, [r0, #\obase+0]
     tst     r7, r7
-    strneh  r7, [r0, #\obase+2]
+    strhne  r7, [r0, #\obase+2]
     tst     r8, r8
-    strneh  r8, [r0, #\obase+4]
+    strhne  r8, [r0, #\obase+4]
     tst     lr, lr
-    strneh  lr, [r0, #\obase+6]
+    strhne  lr, [r0, #\obase+6]
 .endm
 
 @ in: r0=dst, r2=pal, r12=0x1fe
@@ -53,13 +54,13 @@
     ldrh     r8, [r2, r8]
     ldrh     \rs,[r2, \rs]
     tst      r6, r6
-    strneh   r6, [r0, #0]
+    strhne   r6, [r0, #0]
     tst      r7, r7
-    strneh   r7, [r0, #2]
+    strhne   r7, [r0, #2]
     tst      r8, r8
-    strneh   r8, [r0, #4]
+    strhne   r8, [r0, #4]
     tst      \rs,\rs
-    strneh   \rs,[r0, #6]
+    strhne   \rs,[r0, #6]
 .endm
 
 .global sprite_4bpp_x16_asm @ (u16 *d, void *s, u16 *pal, int lines)
@@ -175,7 +176,7 @@ sprite_driver_4bpp_asm:
     ldrh    r7, [r2, r7]
     add     r0, r0, #2
     tst     r7, r7
-    strneh  r7, [r0, #-2]
+    strhne  r7, [r0, #-2]
     subs    r8, r8, #1
     bgt     0b
     sprite_driver_part3
@@ -200,7 +201,7 @@ sprite_driver_8bpp_asm:
     ldrh    r7, [r2, r7]
     add     r0, r0, #2
     tst     r7, r7
-    strneh  r7, [r0, #-2]
+    strhne  r7, [r0, #-2]
     subs    r8, r8, #1
     bgt     0b
     sprite_driver_part3
@@ -254,7 +255,7 @@ poly_4bpp_asm:
     add     r0, r0, #2
     mov     r7, r4, lsr #13
     tst     r12,r12
-    strneh  r12,[r0, #-2]
+    strhne  r12,[r0, #-2]
     subs    r2, r2, #1
     bgt     0b
 
@@ -285,7 +286,7 @@ poly_4bpp_v_asm: @ r3=clut, r4=u, r5=u_inc, r6=u_msk, r7=v, lr=v_masked
     and     lr, r7, r9
     tst     r12,r12
     add     lr, r1, lr, lsl #1
-    strneh  r12,[r0, #-2]
+    strhne  r12,[r0, #-2]
     mov     r12,r4, lsr #13
     subs    r2, r2, #1
     bgt     0b
@@ -304,7 +305,7 @@ poly_4bpp_v_asm: @ r3=clut, r4=u, r5=u_inc, r6=u_msk, r7=v, lr=v_masked
     smulbb  \t0, \t0, \mbr       @ -> 0000 0000 0000 orrr  rrxx xxxx xxxx xxxx
     smulbt  \t1, \t1, \mg        @ -> 0000 000o gggg gxxx  xxxx xxxx xxx0 0000
     smulbt  \t2, \t2, \mbr       @ -> 00ob bbbb xxxx xxxx  xxxx xx00 0000 0000
-    and     \rp, \rp, #0x8000
+    ands    \rp, \rp, #0x8000    @ retain msb + semi-transparency test
     usat    \t0, #5, \t0, asr #14
     usat    \t1, #5, \t1, asr #19
     usat    \t2, #5, \t2, asr #24
@@ -313,13 +314,25 @@ poly_4bpp_v_asm: @ r3=clut, r4=u, r5=u_inc, r6=u_msk, r7=v, lr=v_masked
     orr     \rp, \rp, \t2, lsl #10
 .endm
 
-.global poly_4bpp_l_asm @ (void *d, const struct gpu_unai_inner_t *inn, int count)
-poly_4bpp_l_asm:
+@ http://www.slack.net/~ant/info/rgb_mixing.html
+@ p0 = (p0 + p1) / 2; p1 |= 0x8000
+@ msb of input p0 is assumed to be set
+.macro semitrans0 p0 p1 t
+    eor     \t,  \p0, \p1
+    and     \t,  \t, #0x0420
+    sub     \p0, \p0, \t
+    orr     \p1, \p1, #0x8000
+    uhadd16 \p0, \p0, \p1
+.endm
+
+.macro poly_4bpp_asm_m name semitrans
+.global \name @ (void *d, const struct gpu_unai_inner_t *inn, int count)
+\name:
     .cfi_startproc
     stmfd   sp!, {r4-r11,lr}
     .cfi_def_cfa_offset 4*9
     .cfi_rel_offset lr, 4*8
-    poly_4bpp_init poly_4bpp_lv_asm 1
+    poly_4bpp_init v_\name 1
 0:
     mov     r12,r4, lsr #13
     subs    r2, r2, #1
@@ -337,12 +350,20 @@ poly_4bpp_l_asm:
     tst     r12,r12
     beq     0b
     modulate r12, r10, r11, r7, r8, lr
+.if \semitrans < 0
+    @ no semi-transparency
+.elseif \semitrans == 0
+    ldrhne  r7, [r0, #-2]
+    strheq  r12,[r0, #-2]
+    beq     0b
+    semitrans0 r12, r7, lr
+.endif
     strh    r12,[r0, #-2]
     b       0b
 1:
     ldmfd   sp!, {r4-r11,pc}
 
-poly_4bpp_lv_asm: @ r3=clut, r4=u, r5=u_inc, r6=u_msk, r7=v, lr=v_masked
+v_\name: @ r3=clut, r4=u, r5=u_inc, r6=u_msk, r7=v, lr=v_masked
     sub     sp, sp, #4*2
     .cfi_def_cfa_offset 4*(9+2)
     .cfi_rel_offset lr, 4*(8+2)
@@ -372,6 +393,14 @@ poly_4bpp_lv_asm: @ r3=clut, r4=u, r5=u_inc, r6=u_msk, r7=v, lr=v_masked
     tst     r12,r12
     beq     0b
     modulate r12, r10, r11, r5, r6, lr
+.if \semitrans < 0
+    @ no semi-transparency
+.elseif \semitrans == 0
+    ldrhne  r7, [r0, #-2]
+    strheq  r12,[r0, #-2]
+    beq     0b
+    semitrans0 r12, r7, lr
+.endif
     strh    r12,[r0, #-2]
     ldmia   sp, {r5,r6}
     b       0b
@@ -379,6 +408,10 @@ poly_4bpp_lv_asm: @ r3=clut, r4=u, r5=u_inc, r6=u_msk, r7=v, lr=v_masked
     add     sp, sp, #4*2
     ldmfd   sp!, {r4-r11,pc}
     .cfi_endproc
+.endm
+
+poly_4bpp_asm_m poly_4bpp_l_asm,    -1
+poly_4bpp_asm_m poly_4bpp_l_st0_asm, 0
 
 #endif // HAVE_ARMV6
 
diff --git a/plugins/gpu_unai/gpu_arm.h b/plugins/gpu_unai/gpu_arm.h
index ccdc781f..027aa53c 100644
--- a/plugins/gpu_unai/gpu_arm.h
+++ b/plugins/gpu_unai/gpu_arm.h
@@ -16,6 +16,7 @@ void sprite_4bpp_x16_asm(void *d, const void *s, void *pal, int lines);
 
 void poly_4bpp_asm(void *d, const struct gpu_unai_inner_t *inn, int count);
 void poly_4bpp_l_asm(void *d, const struct gpu_unai_inner_t *inn, int count);
+void poly_4bpp_l_st0_asm(void *d, const struct gpu_unai_inner_t *inn, int count);
 
 #ifdef __cplusplus
 }
diff --git a/plugins/gpu_unai/gpu_inner.h b/plugins/gpu_unai/gpu_inner.h
index 5cef54a7..87324b90 100644
--- a/plugins/gpu_unai/gpu_inner.h
+++ b/plugins/gpu_unai/gpu_inner.h
@@ -56,6 +56,7 @@
 #include "gpu_inner_light.h"
 
 #include "arm_features.h"
+#include "compiler_features.h"
 #ifdef __arm__
 #include "gpu_inner_blend_arm.h"
 #include "gpu_inner_light_arm.h"
@@ -372,7 +373,7 @@ typedef void (*PS)(le16_t *pPixel, u32 count, const u8 *pTxt,
 	const spriteDriverArg *arg);
 
 template<int CF>
-static void gpuSpriteDriverFn(le16_t *pPixel, u32 count, const u8 *pTxt_base,
+static noinline void gpuSpriteDriverFn(le16_t *pPixel, u32 count, const u8 *pTxt_base,
 	const spriteDriverArg *arg)
 {
 	// Blend func can save an operation if it knows uSrc MSB is unset.
@@ -557,7 +558,7 @@ const PS gpuSpriteDrivers[256] = {
 //             relevant blend/light headers.
 // (see README_senquack.txt)
 template<int CF>
-static void gpuPolySpanFn(const gpu_unai_t &gpu_unai, le16_t *pDst, u32 count)
+static noinline void gpuPolySpanFn(const gpu_unai_t &gpu_unai, le16_t *pDst, u32 count)
 {
 	// Blend func can save an operation if it knows uSrc MSB is unset.
 	//  Untextured prims can always skip this (src color MSB is always 0).
@@ -754,11 +755,13 @@ endpolytext:
 
 #ifdef __arm__
 template<int CF>
-static void PolySpanAsm(const gpu_unai_t &gpu_unai, le16_t *pDst, u32 count)
+static void PolySpanMaybeAsm(const gpu_unai_t &gpu_unai, le16_t *pDst, u32 count)
 {
 	switch (CF) {
-	case 0x20: poly_4bpp_asm  (pDst, &gpu_unai.inn, count); break;
-	case 0x21: poly_4bpp_l_asm(pDst, &gpu_unai.inn, count); break;
+	case 0x20: poly_4bpp_asm      (pDst, &gpu_unai.inn, count); break;
+	case 0x21: poly_4bpp_l_asm    (pDst, &gpu_unai.inn, count); break;
+	case 0x23: poly_4bpp_l_st0_asm(pDst, &gpu_unai.inn, count); break;
+	default:   gpuPolySpanFn<CF>(gpu_unai, pDst, count);
 	}
 }
 #endif
@@ -778,12 +781,12 @@ typedef void (*PP)(const gpu_unai_t &gpu_unai, le16_t *pDst, u32 count);
 #define TI(cf) gpuPolySpanFn<(cf)>
 #define TN     PolyNULL
 #ifdef __arm__
-#define TA(cf) PolySpanAsm<(cf)>
+#define TA(cf) PolySpanMaybeAsm<(cf)>
 #else
 #define TA(cf) TI(cf)
 #endif
 #ifdef HAVE_ARMV6
-#define TA6(cf) PolySpanAsm<(cf)>
+#define TA6(cf) PolySpanMaybeAsm<(cf)>
 #else
 #define TA6(cf) TI(cf)
 #endif
@@ -792,7 +795,7 @@ typedef void (*PP)(const gpu_unai_t &gpu_unai, le16_t *pDst, u32 count);
 	TN,            TN,            TI((ub)|0x0a), TI((ub)|0x0b), TN,            TN,            TI((ub)|0x0e), TI((ub)|0x0f), \
 	TN,            TN,            TI((ub)|0x12), TI((ub)|0x13), TN,            TN,            TI((ub)|0x16), TI((ub)|0x17), \
 	TN,            TN,            TI((ub)|0x1a), TI((ub)|0x1b), TN,            TN,            TI((ub)|0x1e), TI((ub)|0x1f), \
-	TA((ub)|0x20), TA6((ub)|0x21),TI((ub)|0x22), TI((ub)|0x23), TI((ub)|0x24), TI((ub)|0x25), TI((ub)|0x26), TI((ub)|0x27), \
+	TA((ub)|0x20), TA6((ub)|0x21),TI((ub)|0x22), TA6((ub)|0x23),TI((ub)|0x24), TI((ub)|0x25), TI((ub)|0x26), TI((ub)|0x27), \
 	TN,            TN,            TI((ub)|0x2a), TI((ub)|0x2b), TN,            TN,            TI((ub)|0x2e), TI((ub)|0x2f), \
 	TN,            TN,            TI((ub)|0x32), TI((ub)|0x33), TN,            TN,            TI((ub)|0x36), TI((ub)|0x37), \
 	TN,            TN,            TI((ub)|0x3a), TI((ub)|0x3b), TN,            TN,            TI((ub)|0x3e), TI((ub)|0x3f), \
diff --git a/plugins/gpu_unai/gpu_inner_blend_arm.h b/plugins/gpu_unai/gpu_inner_blend_arm.h
index 6413527c..f887374c 100644
--- a/plugins/gpu_unai/gpu_inner_blend_arm.h
+++ b/plugins/gpu_unai/gpu_inner_blend_arm.h
@@ -41,10 +41,14 @@ GPU_INLINE uint_fast16_t gpuBlendingARM(uint_fast16_t uSrc, uint_fast16_t uDst)
 		asm ("eor %[mix], %[uSrc], %[uDst]\n\t" // uSrc ^ uDst
 		     "and %[mix], %[mix], %[mask]\n\t"  // ... & 0x0421
 		     "sub %[mix], %[uDst], %[mix]\n\t"  // uDst - ...
+		#ifdef HAVE_ARMV6
+		     "uhadd16 %[mix], %[uSrc], %[mix]\n\t"
+		#else
 		     "add %[mix], %[uSrc], %[mix]\n\t"  // uSrc + ...
 		     "mov %[mix], %[mix], lsr #0x1\n\t" // ... >> 1
+		#endif
 		     : [mix] "=&r" (mix)
-		     : [uSrc] "r" (uSrc), [uDst] "r" (uDst), [mask] "r" (0x0421));
+		     : [uSrc] "r" (uSrc), [uDst] "r" (uDst), [mask] "r" (0x0420)); // 421
 	}
 
 	if (BLENDMODE == 1 || BLENDMODE == 3) {