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encode_s3tc 100%, blockenc 99% (#1203)

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This commit is contained in:
LagoLunatic
2026-09-12 14:11:15 -04:00
committed by GitHub
parent 6b3a64dd81
commit 67a513f3a1
1 changed files with 170 additions and 164 deletions
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src/m_Do/m_Do_graphic.cpp
+170 -164
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@@ -908,25 +908,26 @@ void mDoGph_CaptureCansel() {
}
#endif
#define COLOR_SQUARE_MAG(r0, g0, b0, r1, g1, b1) (r0 - r1)*(r0 - r1) + (g0 - g1)*(g0 - g1) + (b0 - b1)*(b0 - b1)
#define COLOR_SQUARE_MAG(r0, g0, b0, r1, g1, b1) SQUARE(r0 - r1) + SQUARE(g0 - g1) + SQUARE(b0 - b1)
/* 80009C38-8000A180 .text blockenc__FPUc */
void blockenc(u8* block) {
/* Nonmatching */
/* Nonmatching - regalloc */
u8 colors[16*3]; // sp18
u32 color_mags[4]; // sp08
u32 c0[3];
u32 c1[3];
u32 c2[3];
u32 c3[3];
u32 i;
u32 r9;
u32 pix_idx;
u32 color_num;
u32 j;
u32 r23;
u32 r18;
u32 r22;
u32 r21;
u32 r20;
u32 r22;
u32 r11;
u32 r4_;
@@ -934,68 +935,72 @@ void blockenc(u8* block) {
u32 r6;
u32 r8;
u32 offs1;
u32 offs2;
u32 color_num;
u32 r18;
u32 r5;
u32 r24;
u32 r25;
u32 color_0_idx;
u32 color_1_idx;
u32 r0_2 = 0x40;
if (r0_2 == 0x40) {
color_num = 0; // r11
i = 0; // r8
pix_idx = 0; // r10
for (; i < 0x30; i += 3, pix_idx += 4) {
r9 = 0; // r9
for (int j = 0; j < color_num; j++) {
if (colors[r9*3+0] == block[pix_idx+0] && colors[r9*3+1] == block[pix_idx+1] && colors[r9*3+2] == block[pix_idx+2]) {
offs1 = 0; // r10
for (; i < 0x30; i += 3, offs1 += 4) {
j = 0; // r9
for (j = 0; j < color_num; j++) {
if (colors[j*3+0] == block[offs1+0] && colors[j*3+1] == block[offs1+1] && colors[j*3+2] == block[offs1+2]) {
break;
}
r9++;
}
if (r9 == color_num) {
colors[r9*3 + 0] = block[pix_idx+0];
colors[r9*3 + 1] = block[pix_idx+1];
colors[r9*3 + 2] = block[pix_idx+2];
if (j == color_num) {
colors[j*3 + 0] = block[offs1+0];
colors[j*3 + 1] = block[offs1+1];
colors[j*3 + 2] = block[offs1+2];
color_num += 1;
}
}
u32 color_0_idx = 0; // r17
u32 color_1_idx = 0; // r16
color_0_idx = 0; // r17
color_1_idx = 0; // r16
if (color_num > 1) {
r23 = 0;
r18 = INT32_MAX;
for (; r23 < color_num*3 - 3; r23 += 3) {
u32 r0 = colors[r23+0] * 30;
u32 g0 = colors[r23+1] * 59;
u32 b0 = colors[r23+2] * 11;
c0[0] = colors[r23+0] * 30;
c0[1] = colors[r23+1] * 59;
c0[2] = colors[r23+2] * 11;
for (r21 = r23+3; r21 < color_num*3; r21 += 3) {
u32 r1 = colors[r21+0] * 30;
u32 g1 = colors[r21+1] * 59;
u32 b1 = colors[r21+2] * 11;
r20 = 0; // r20
pix_idx = r20; // r19
r22 = pix_idx; // r22
for (; r22 < 0x10; r22++, pix_idx += 4) {
u32 r2 = (r0 * 5 + r1 * 3) / 8;
u32 g2 = (g0 * 5 + g1 * 3) / 8;
u32 b2 = (b0 * 5 + b1 * 3) / 8;
u32 r3 = (r1 * 5 + r0 * 3) / 8;
u32 g3 = (g1 * 5 + g0 * 3) / 8;
u32 b3 = (b1 * 5 + b0 * 3) / 8;
color_mags[0] = COLOR_SQUARE_MAG(r0, g0, b0, block[pix_idx+0] * 30, block[pix_idx+1] * 59, block[pix_idx+2] * 11);
color_mags[1] = COLOR_SQUARE_MAG(r1, g1, b1, block[pix_idx+0] * 30, block[pix_idx+1] * 59, block[pix_idx+2] * 11);
color_mags[2] = COLOR_SQUARE_MAG(r2, g2, b2, block[pix_idx+0] * 30, block[pix_idx+1] * 59, block[pix_idx+2] * 11);
color_mags[3] = COLOR_SQUARE_MAG(r3, g3, b3, block[pix_idx+0] * 30, block[pix_idx+1] * 59, block[pix_idx+2] * 11);
c1[0] = colors[r21+0] * 30;
c1[1] = colors[r21+1] * 59;
c1[2] = colors[r21+2] * 11;
c2[0] = (c0[0] * 5 + c1[0] * 3) / 8;
c2[1] = (c0[1] * 5 + c1[1] * 3) / 8;
c2[2] = (c0[2] * 5 + c1[2] * 3) / 8;
c3[0] = (c1[0] * 5 + c0[0] * 3) / 8;
c3[1] = (c1[1] * 5 + c0[1] * 3) / 8;
c3[2] = (c1[2] * 5 + c0[2] * 3) / 8;
r22 = offs2 = r20 = 0;
for (; r22 < 0x10; r22++, offs2 += 4) {
color_mags[0] = COLOR_SQUARE_MAG(c0[0], c0[1], c0[2], block[offs2+0] * 30, block[offs2+1] * 59, block[offs2+2] * 11);
color_mags[1] = COLOR_SQUARE_MAG(c1[0], c1[1], c1[2], block[offs2+0] * 30, block[offs2+1] * 59, block[offs2+2] * 11);
color_mags[2] = COLOR_SQUARE_MAG(c2[0], c2[1], c2[2], block[offs2+0] * 30, block[offs2+1] * 59, block[offs2+2] * 11);
color_mags[3] = COLOR_SQUARE_MAG(c3[0], c3[1], c3[2], block[offs2+0] * 30, block[offs2+1] * 59, block[offs2+2] * 11);
u32 r5 = 0;
u32 r6 = INT32_MAX;
r5 = 0;
u32 r6_r25 = INT32_MAX;
for (; r5 < 4; r5++) {
if (color_mags[r5] < r6) {
r6 = color_mags[r5];
if (color_mags[r5] < r6_r25) {
r6_r25 = color_mags[r5];
}
}
r20 += r6;
r20 += r6_r25;
}
if (r20 < r18) {
@@ -1025,33 +1030,31 @@ void blockenc(u8* block) {
block[0x42] = r4_ >> 8;
block[0x43] = r4_ & 0xFF;
u32 r0 = ((r11 >> 8) & 0xF8) * 30;
u32 g0 = ((r11 >> 3) & 0xFC) * 59;
u32 b0 = ((r11 << 3) & 0xFC) * 11;
u32 r1 = ((r4_ >> 8) & 0xF8) * 30;
u32 g1 = ((r4_ >> 3) & 0xFC) * 59;
u32 b1 = ((r4_ << 3) & 0xFC) * 11;
u32 r2 = (r0 * 5 + r1 * 3) / 8;
u32 g2 = (g0 * 5 + g1 * 3) / 8;
u32 b2 = (b0 * 5 + b1 * 3) / 8;
u32 r3 = (r1 * 5 + r0 * 3) / 8;
u32 g3 = (g1 * 5 + g0 * 3) / 8;
u32 b3 = (b1 * 5 + b0 * 3) / 8;
c0[0] = ((r11 >> 8) & 0xF8) * 30;
c0[1] = ((r11 >> 3) & 0xFC) * 59;
c0[2] = ((r11 << 3) & 0xFC) * 11;
c1[0] = ((r4_ >> 8) & 0xF8) * 30;
c1[1] = ((r4_ >> 3) & 0xFC) * 59;
c1[2] = ((r4_ << 3) & 0xFC) * 11;
c2[0] = (c0[0] * 5 + c1[0] * 3) / 8;
c2[1] = (c0[1] * 5 + c1[1] * 3) / 8;
c2[2] = (c0[2] * 5 + c1[2] * 3) / 8;
c3[0] = (c1[0] * 5 + c0[0] * 3) / 8;
c3[1] = (c1[1] * 5 + c0[1] * 3) / 8;
c3[2] = (c1[2] * 5 + c0[2] * 3) / 8;
r6 = 30; // r6 (bit offset within r8)
r8 = 0; // r8 (bitfield of color indexes)
pix_idx = r8;
for (; pix_idx < 0x40; pix_idx += 4, r6 -= 2) {
color_mags[0] = COLOR_SQUARE_MAG(r0, g0, b0, block[pix_idx+0] * 30, block[pix_idx+1] * 59, block[pix_idx+2] * 11);
color_mags[1] = COLOR_SQUARE_MAG(r1, g1, b1, block[pix_idx+0] * 30, block[pix_idx+1] * 59, block[pix_idx+2] * 11);
color_mags[2] = COLOR_SQUARE_MAG(r2, g2, b2, block[pix_idx+0] * 30, block[pix_idx+1] * 59, block[pix_idx+2] * 11);
color_mags[3] = COLOR_SQUARE_MAG(r3, g3, b3, block[pix_idx+0] * 30, block[pix_idx+1] * 59, block[pix_idx+2] * 11);
offs1 = r8 = 0; // r8 (bitfield of color indexes)
for (; offs1 < 0x40; offs1 += 4, r6 -= 2) {
color_mags[0] = COLOR_SQUARE_MAG(c0[0], c0[1], c0[2], block[offs1+0] * 30, block[offs1+1] * 59, block[offs1+2] * 11);
color_mags[1] = COLOR_SQUARE_MAG(c1[0], c1[1], c1[2], block[offs1+0] * 30, block[offs1+1] * 59, block[offs1+2] * 11);
color_mags[2] = COLOR_SQUARE_MAG(c2[0], c2[1], c2[2], block[offs1+0] * 30, block[offs1+1] * 59, block[offs1+2] * 11);
color_mags[3] = COLOR_SQUARE_MAG(c3[0], c3[1], c3[2], block[offs1+0] * 30, block[offs1+1] * 59, block[offs1+2] * 11);
r24 = 0;
r5 = r24;
r25 = INT32_MAX;
r5 = r24 = 0;
u32 r6_r25 = INT32_MAX;
for (; r5 < 4; r5++) {
if (color_mags[r5] < r25) {
r25 = color_mags[r5];
if (color_mags[r5] < r6_r25) {
r6_r25 = color_mags[r5];
r24 = r5;
}
}
@@ -1059,22 +1062,19 @@ void blockenc(u8* block) {
r8 |= (r24 & 0x03) << r6;
}
} else { // VERSION_DEMO only block (optimized out in retail)
pix_idx = 0; // r10
color_num = pix_idx; // r11
i = color_num; // r8
for (; i < 0x30; i += 3, pix_idx += 4) {
if (block[pix_idx+3] == 0xFF) {
r9 = 0; // r9
for (int j = 0; j < color_num; j++) {
if (colors[r9*3+0] == block[pix_idx+0] && colors[r9*3+1] == block[pix_idx+1] && colors[r9*3+2] == block[pix_idx+2]) {
i = color_num = offs1 = 0;
for (; i < 0x30; i += 3, offs1 += 4) {
if (block[offs1+3] == 0xFF) {
j = 0; // r9
for (j = 0; j < color_num; j++) {
if (colors[j*3+0] == block[offs1+0] && colors[j*3+1] == block[offs1+1] && colors[j*3+2] == block[offs1+2]) {
break;
}
r9++;
}
if (r9 == color_num) {
colors[r9*3 + 0] = block[pix_idx+0];
colors[r9*3 + 1] = block[pix_idx+1];
colors[r9*3 + 2] = block[pix_idx+2];
if (j == color_num) {
colors[j*3 + 0] = block[offs1+0];
colors[j*3 + 1] = block[offs1+1];
colors[j*3 + 2] = block[offs1+2];
color_num += 1;
}
}
@@ -1091,34 +1091,32 @@ void blockenc(u8* block) {
r23 = 0;
r18 = INT32_MAX;
for (; r23 < color_num*3 - 3; r23 += 3) {
u32 r0 = colors[r23+0] * 30;
u32 g0 = colors[r23+1] * 59;
u32 b0 = colors[r23+2] * 11;
for (r21 = r23+3; r21 < color_num*3 - 3; r21 += 3) {
u32 r1 = colors[r21+0] * 30;
u32 g1 = colors[r21+1] * 59;
u32 b1 = colors[r21+2] * 11;
u32 r3 = (r0 + r1) / 2;
u32 g3 = (g0 + g1) / 2;
u32 b3 = (b0 + b1) / 2;
r20 = 0; // r20
pix_idx = r20; // r19
r22 = pix_idx; // r22
for (; r22 < 0x10; r22++, pix_idx += 4) {
if (block[pix_idx + 3] == 0xFF) {
color_mags[0] = COLOR_SQUARE_MAG(r0, g0, b0, block[pix_idx+0] * 30, block[pix_idx+1] * 59, block[pix_idx+2] * 11);
color_mags[1] = COLOR_SQUARE_MAG(r1, g1, b1, block[pix_idx+0] * 30, block[pix_idx+1] * 59, block[pix_idx+2] * 11);
color_mags[2] = COLOR_SQUARE_MAG(r3, g3, b3, block[pix_idx+0] * 30, block[pix_idx+1] * 59, block[pix_idx+2] * 11);
c0[0] = colors[r23+0] * 30;
c0[1] = colors[r23+1] * 59;
c0[2] = colors[r23+2] * 11;
for (r21 = r23+3; r21 < color_num*3; r21 += 3) {
c1[0] = colors[r21+0] * 30;
c1[1] = colors[r21+1] * 59;
c1[2] = colors[r21+2] * 11;
c2[0] = (c0[0] + c1[0]) / 2;
c2[1] = (c0[1] + c1[1]) / 2;
c2[2] = (c0[2] + c1[2]) / 2;
r22 = offs2 = r20 = 0;
for (; r22 < 0x10; r22++, offs2 += 4) {
if (block[offs2+3] == 0xFF) {
color_mags[0] = COLOR_SQUARE_MAG(c0[0], c0[1], c0[2], block[offs2+0] * 30, block[offs2+1] * 59, block[offs2+2] * 11);
color_mags[1] = COLOR_SQUARE_MAG(c1[0], c1[1], c1[2], block[offs2+0] * 30, block[offs2+1] * 59, block[offs2+2] * 11);
color_mags[2] = COLOR_SQUARE_MAG(c2[0], c2[1], c2[2], block[offs2+0] * 30, block[offs2+1] * 59, block[offs2+2] * 11);
u32 r5 = 0;
u32 r6 = INT32_MAX;
r5 = 0;
u32 r6_r25 = INT32_MAX;
for (; r5 < 3; r5++) {
if (color_mags[r5] < r6) {
r6 = color_mags[r5];
if (color_mags[r5] < r6_r25) {
r6_r25 = color_mags[r5];
}
}
r20 += r6;
r20 += r6_r25;
}
}
@@ -1149,37 +1147,34 @@ void blockenc(u8* block) {
block[0x42] = r4_ >> 8;
block[0x43] = r4_ & 0xFF;
u32 r0 = (r11 >> 8) & 0xF8;
u32 g0 = (r11 >> 3) & 0xFC;
u32 b0 = (r11 << 3) & 0xFC;
u32 r1 = (r4_ >> 8) & 0xF8;
u32 g1 = (r4_ >> 3) & 0xFC;
u32 b1 = (r4_ << 3) & 0xFC;
r0 *= 30;
g0 *= 59;
b0 *= 11;
r1 *= 30;
g1 *= 59;
b1 *= 11;
u32 r3 = (r0 + r1) / 2;
u32 g3 = (g0 + g1) / 2;
u32 b3 = (b0 + b1) / 2;
c0[0] = (r11 >> 8) & 0xF8;
c0[1] = (r11 >> 3) & 0xFC;
c0[2] = (r11 << 3) & 0xFC;
c1[0] = (r4_ >> 8) & 0xF8;
c1[1] = (r4_ >> 3) & 0xFC;
c1[2] = (r4_ << 3) & 0xFC;
c0[0] *= 30;
c0[1] *= 59;
c0[2] *= 11;
c1[0] *= 30;
c1[1] *= 59;
c1[2] *= 11;
c2[0] = (c0[0] + c1[0]) / 2;
c2[1] = (c0[1] + c1[1]) / 2;
c2[2] = (c0[2] + c1[2]) / 2;
// r6 = 30; // r6 (bit offset within r8)
r8 = 0; // r8 (bitfield of color indexes)
pix_idx = r8;
i = r8;
for (; i < 0x10; i++, pix_idx += 4) {
if (block[pix_idx+3] == 0xFF) {
color_mags[0] = COLOR_SQUARE_MAG(r0, g0, b0, block[pix_idx+0] * 30, block[pix_idx+1] * 59, block[pix_idx+2] * 11);
color_mags[1] = COLOR_SQUARE_MAG(r1, g1, b1, block[pix_idx+0] * 30, block[pix_idx+1] * 59, block[pix_idx+2] * 11);
color_mags[2] = COLOR_SQUARE_MAG(r3, g3, b3, block[pix_idx+0] * 30, block[pix_idx+1] * 59, block[pix_idx+2] * 11);
i = offs2 = r8 = 0; // r8 (bitfield of color indexes)
for (; i < 0x10; i++, offs2 += 4) {
if (block[offs2+3] == 0xFF) {
color_mags[0] = COLOR_SQUARE_MAG(c0[0], c0[1], c0[2], block[offs2+0] * 30, block[offs2+1] * 59, block[offs2+2] * 11);
color_mags[1] = COLOR_SQUARE_MAG(c1[0], c1[1], c1[2], block[offs2+0] * 30, block[offs2+1] * 59, block[offs2+2] * 11);
color_mags[2] = COLOR_SQUARE_MAG(c2[0], c2[1], c2[2], block[offs2+0] * 30, block[offs2+1] * 59, block[offs2+2] * 11);
r5 = 0;
r24 = r5;
r25 = INT32_MAX;
r24 = r5 = 0;
u32 r6_r25 = INT32_MAX;
for (; r24 < 3; r24++) {
if (color_mags[r24] < r25) {
r25 = color_mags[r24];
if (color_mags[r24] < r6_r25) {
r6_r25 = color_mags[r24];
r5 = r24;
}
}
@@ -1199,34 +1194,45 @@ void blockenc(u8* block) {
/* 8000A180-8000A530 .text encode_s3tc__FPUcPUcii9_GXTexFmt */
u32 encode_s3tc(u8* r25, u8* r26, int r27, int r28, GXTexFmt fmt) {
/* Nonmatching */
// params: capture_buffer, texture_buffer, width, height, fmt
u8 block[0x40 + 0x8]; // sp08;
u32 r31 = 0;
u32 r5_r8_r4;
int i;
int r3_r9_r5;
int r21;
int r20_r30;
int r19_r29;
int r18_r24;
u32 r4_r10_r6;
u32 r5_r8_r4;
u32 r11;
u32 r31;
r31 = 0;
if (fmt == GX_TF_I8) {
u32 i8low = 255; // r30
u32 i8high = 0; // r29
for (int r18 = 0; r18 < r28; r18 += 8) {
for (int r19 = 0; r19 < r27; r19 += 8) {
for (int r20 = 0; r20 < 8; r20 += 4) {
for (int r21 = 0; r21 < 8; r21 += 4) {
for (r18_r24 = 0; r18_r24 < r28; r18_r24 += 8) {
for (r19_r29 = 0; r19_r29 < r27; r19_r29 += 8) {
for (r20_r30 = 0; r20_r30 < 8; r20_r30 += 4) {
for (r21 = 0; r21 < 8; r21 += 4) {
r5_r8_r4 = 0;
for (r3_r9_r5 = 0; r3_r9_r5 < 4; r3_r9_r5++) {
u32 r4 = (r19 * 4) + r27 * (r18 + r20) + r21 + r3_r9_r5*8;
for (int i = 0; i < 4; r5_r8_r4 += 4, i++, r4++) {
u32 r11 = r25[r4];
r4_r10_r6 = (r19_r29 * 4) + r27 * (r18_r24 + r20_r30) + r21 + r3_r9_r5*8;
for (i = 0; i < 4; r5_r8_r4 += 4, i++, r4_r10_r6++) {
r11 = r25[r4_r10_r6];
if (i8low > r11) {
i8low = r11;
}
if (i8high < r11) {
i8high = r11;
}
u32 r0 = ((r11 - 16) * 255) / 219;
block[r5_r8_r4+0] = r0 & 0xF8;
block[r5_r8_r4+1] = r0 & 0xFC;
block[r5_r8_r4+2] = r0 & 0xF8;
r11 -= 16;
r11 *= 255;
r11 /= 219;
block[r5_r8_r4+0] = r11 & 0xF8;
block[r5_r8_r4+1] = r11 & 0xFC;
block[r5_r8_r4+2] = r11 & 0xF8;
block[r5_r8_r4+3] = 255; // r8 (alpha)
}
}
@@ -1239,15 +1245,15 @@ u32 encode_s3tc(u8* r25, u8* r26, int r27, int r28, GXTexFmt fmt) {
}
JUT_ASSERT(VERSION_SELECT(2172, 2429, 2215, 2222), 16 <= i8low && i8high <= 235);
} else if (fmt == GX_TF_RGB565) {
for (int r24 = 0; r24 < r28; r24 += 8) {
for (int r29 = 0; r29 < r27; r29 += 8) {
for (int r30 = 0; r30 < 8; r30 += 4) {
for (int r21 = 0; r21 < 8; r21 += 4) {
for (r18_r24 = 0; r18_r24 < r28; r18_r24 += 8) {
for (r19_r29 = 0; r19_r29 < r27; r19_r29 += 8) {
for (r20_r30 = 0; r20_r30 < 8; r20_r30 += 4) {
for (r21 = 0; r21 < 8; r21 += 4) {
r5_r8_r4 = 0;
for (r3_r9_r5 = 0; r3_r9_r5 < 4; r3_r9_r5++) {
u32 r10 = ((r27 * (r24 + r30))*2) + (r29 + r21)*8 + r3_r9_r5*8;
for (int i = 0; i < 4; i++, r5_r8_r4 += 4, r10 += 2) {
u32 r11 = *(u16*)(&r25[r10]);
r4_r10_r6 = ((r27 * (r18_r24 + r20_r30))*2) + (r19_r29 + r21)*8 + r3_r9_r5*8;
for (i = 0; i < 4; i++, r5_r8_r4 += 4, r4_r10_r6 += 2) {
r11 = *(u16*)(&r25[r4_r10_r6]);
block[r5_r8_r4+0] = (r11 >> 8) & 0xF8;
block[r5_r8_r4+1] = (r11 >> 3) & 0xFC;
block[r5_r8_r4+2] = (r11 << 3) & 0xF8;
@@ -1262,19 +1268,19 @@ u32 encode_s3tc(u8* r25, u8* r26, int r27, int r28, GXTexFmt fmt) {
}
}
} else if (fmt == GX_TF_RGBA8) {
for (int r24 = 0; r24 < r28; r24 += 8) {
for (int r29 = 0; r29 < r27; r29 += 8) {
for (int r30 = 0; r30 < 8; r30 += 4) {
for (int r21 = 0; r21 < 8; r21 += 4) {
for (r18_r24 = 0; r18_r24 < r28; r18_r24 += 8) {
for (r19_r29 = 0; r19_r29 < r27; r19_r29 += 8) {
for (r20_r30 = 0; r20_r30 < 8; r20_r30 += 4) {
for (r21 = 0; r21 < 8; r21 += 4) {
r5_r8_r4 = 0;
for (r3_r9_r5 = 0; r3_r9_r5 < 4; r3_r9_r5++) {
u32 r6 = 16 * (r29 + r21) + (4 * (r27 * (r24 + r30))) + r3_r9_r5 * 8;
u32 r7 = r6 + 0x20;
for (int i = 0; i < 4; i++, r5_r8_r4 += 4, r6 += 2, r7 += 2) {
block[r5_r8_r4+0] = r25[r6+1] & 0xF8;
r4_r10_r6 = 16 * (r19_r29 + r21) + (4 * (r27 * (r18_r24 + r20_r30))) + r3_r9_r5 * 8;
u32 r7 = r4_r10_r6 + 0x20;
for (i = 0; i < 4; i++, r5_r8_r4 += 4, r4_r10_r6 += 2, r7 += 2) {
block[r5_r8_r4+0] = r25[r4_r10_r6+1] & 0xF8;
block[r5_r8_r4+1] = r25[r7+0] & 0xFC;
block[r5_r8_r4+2] = r25[r7+1] & 0xF8;
block[r5_r8_r4+3] = r25[r6+0];
block[r5_r8_r4+3] = r25[r4_r10_r6+0];
block[r5_r8_r4+3] = 255; // r9 (alpha)
}
}