Decompile PreRender.c (#319)

* Decompile PreRender.c

* use NON_EQUIVALENT and run format.sh

* Get rid of some magic values

* rename dList/dListp to dListHead/dList

* make func_800C213C NON_MATCHING

* replace more values with SCREEN_WIDTH/SCREEN_HEIGHT

* dList/dListHead with gfxp/gfx

1 files changed, 613 insertions, 18 deletions

diff --git a/src/code/PreRender.c b/src/code/PreRender.c
index 4e335cd50..bc577353d 100644
--- a/src/code/PreRender.c
+++ b/src/code/PreRender.c
@@ -1,42 +1,637 @@
-#include <ultra64.h>
 #include <global.h>
 
-#pragma GLOBAL_ASM("asm/non_matchings/code/PreRender/func_800C0E70.s")
+void PreRender_SetValuesSave(PreRenderContext* this, u32 width, u32 height, void* fbuf, void* zbuf, void* cvg) {
+    this->widthSave = width;
+    this->heightSave = height;
+    this->fbufSave = fbuf;
+    this->cvgSave = cvg;
+    this->zbufSave = zbuf;
+    this->ulxSave = 0;
+    this->ulySave = 0;
+    this->lrxSave = width - 1;
+    this->lrySave = height - 1;
+}
 
-#pragma GLOBAL_ASM("asm/non_matchings/code/PreRender/func_800C0EA8.s")
+void PreRender_Init(PreRenderContext* this) {
+    bzero(this, sizeof(PreRenderContext));
+    ListAlloc_Init(&this->alloc);
+}
 
-#pragma GLOBAL_ASM("asm/non_matchings/code/PreRender/func_800C0ED8.s")
+void PreRender_SetValues(PreRenderContext* this, u32 width, u32 height, void* fbuf, void* zbuf) {
+    this->width = width;
+    this->height = height;
+    this->fbuf = fbuf;
+    this->zbuf = zbuf;
+    this->ulx = 0;
+    this->uly = 0;
+    this->lrx = width - 1;
+    this->lry = height - 1;
+}
 
-#pragma GLOBAL_ASM("asm/non_matchings/code/PreRender/func_800C0F08.s")
+void PreRender_Destroy(PreRenderContext* this) {
+    ListAlloc_FreeAll(&this->alloc);
+}
 
-#pragma GLOBAL_ASM("asm/non_matchings/code/PreRender/func_800C0F28.s")
+void func_800C0F28(PreRenderContext* this, Gfx** gfxp, void* buf, void* bufSave) {
+    Gfx* gfx;
+    s32 x;
+    s32 x2;
+    s32 add;
+    s32 uls;
+    s32 ult;
+    s32 lrs;
+    s32 lrt;
 
-#pragma GLOBAL_ASM("asm/non_matchings/code/PreRender/func_800C1258.s")
+    LogUtils_CheckNullPointer("this", this, "../PreRender.c", 215);
+    LogUtils_CheckNullPointer("glistpp", gfxp, "../PreRender.c", 216);
+    gfx = *gfxp;
+    LogUtils_CheckNullPointer("glistp", gfx, "../PreRender.c", 218);
 
-#pragma GLOBAL_ASM("asm/non_matchings/code/PreRender/func_800C170C.s")
+    gDPPipeSync(gfx++);
+    gDPSetOtherMode(gfx++,
+                    G_AD_PATTERN | G_CD_MAGICSQ | G_CK_NONE | G_TC_CONV | G_TF_POINT | G_TT_NONE | G_TL_TILE |
+                        G_TD_CLAMP | G_TP_NONE | G_CYC_COPY | G_PM_NPRIMITIVE,
+                    G_AC_NONE | G_ZS_PIXEL | G_RM_NOOP | G_RM_NOOP2);
+    gDPSetColorImage(gfx++, G_IM_FMT_RGBA, G_IM_SIZ_16b, this->width, bufSave);
+    gDPSetScissor(gfx++, G_SC_NON_INTERLACE, 0, 0, this->width, this->height);
 
-#pragma GLOBAL_ASM("asm/non_matchings/code/PreRender/func_800C1AE8.s")
+    x = this->height;
+    add = 0x1000 / (this->width * 2);
+    uls = 0;
+    x2 = 0;
 
-#pragma GLOBAL_ASM("asm/non_matchings/code/PreRender/func_800C1B24.s")
+    while (x > 0) {
+        lrs = this->width - 1;
+        if (x < add) {
+            add = x;
+        }
 
-#pragma GLOBAL_ASM("asm/non_matchings/code/PreRender/func_800C1E9C.s")
+        ult = x2;
+        lrt = (ult + add) - 1;
 
-#pragma GLOBAL_ASM("asm/non_matchings/code/PreRender/func_800C1F20.s")
+        if (1) {}
+        gDPLoadTextureTile(gfx++, buf, G_IM_FMT_RGBA, G_IM_SIZ_16b, this->width, this->height, uls, ult, lrs, lrt,
+                           0, G_TX_NOMIRROR | G_TX_WRAP, G_TX_NOMIRROR | G_TX_WRAP, G_TX_NOMASK, G_TX_NOMASK,
+                           G_TX_NOLOD, G_TX_NOLOD);
+        gSPTextureRectangle(gfx++, uls << 2, ult << 2, lrs << 2, lrt << 2, G_TX_RENDERTILE, uls << 5, ult << 5,
+                            4 << 10, 1 << 10);
 
-#pragma GLOBAL_ASM("asm/non_matchings/code/PreRender/func_800C1FA4.s")
+        x -= add;
+        x2 += add;
+    }
 
-#pragma GLOBAL_ASM("asm/non_matchings/code/PreRender/func_800C20B4.s")
+    gDPPipeSync(gfx++);
+    gDPSetColorImage(gfx++, G_IM_FMT_RGBA, G_IM_SIZ_16b, this->width, this->fbuf);
+    *gfxp = gfx;
+}
 
-#pragma GLOBAL_ASM("asm/non_matchings/code/PreRender/func_800C2118.s")
+void func_800C1258(PreRenderContext* this, Gfx** gfxp) {
+    Gfx* gfx;
+    s32 y;
+    s32 y2;
+    s32 add;
+    s32 ult;
+    s32 lrs;
+    s32 lrt;
+    s32 uly;
 
+    LogUtils_CheckNullPointer("this", this, "../PreRender.c", 278);
+    LogUtils_CheckNullPointer("glistpp", gfxp, "../PreRender.c", 279);
+    gfx = *gfxp;
+    LogUtils_CheckNullPointer("glistp", gfx, "../PreRender.c", 281);
+
+    gDPPipeSync(gfx++);
+    gDPSetOtherMode(gfx++,
+                    G_AD_PATTERN | G_CD_MAGICSQ | G_CK_NONE | G_TC_CONV | G_TF_POINT | G_TT_NONE | G_TL_TILE |
+                        G_TD_CLAMP | G_TP_NONE | G_CYC_COPY | G_PM_NPRIMITIVE,
+                    G_AC_NONE | G_ZS_PIXEL | G_RM_NOOP | G_RM_NOOP2);
+    gDPSetColorImage(gfx++, G_IM_FMT_RGBA, G_IM_SIZ_16b, this->width, this->fbuf);
+    gDPSetScissor(gfx++, G_SC_NON_INTERLACE, this->ulx, this->uly, this->lrx + 1, this->lry + 1);
+
+    y2 = 0;
+    add = 0x1000 / ((this->lrxSave - this->ulxSave + 1) * 2);
+    y = (this->lrySave - this->ulySave) + 1;
+
+    while (y > 0) {
+        if (y < add) {
+            add = y;
+        }
+
+        ult = this->ulySave + y2;
+        uly = this->uly + y2;
+        lrt = (ult + add) - 1;
+
+        if (1) {}
+        gDPLoadTextureTile(gfx++, this->fbufSave, G_IM_FMT_RGBA, G_IM_SIZ_16b, this->widthSave, this->height - 1,
+                           this->ulxSave, ult, this->lrxSave, lrt, 0, G_TX_NOMIRROR | G_TX_WRAP,
+                           G_TX_NOMIRROR | G_TX_WRAP, G_TX_NOMASK, G_TX_NOMASK, G_TX_NOLOD, G_TX_NOLOD);
+        gSPTextureRectangle(gfx++, this->ulx << 2, uly << 2, this->lrx << 2, (uly + add - 1) << 2,
+                            G_TX_RENDERTILE, this->ulxSave << 5, ult << 5, 4 << 10, 1 << 10);
+
+        y -= add;
+        y2 += add;
+    }
+
+    gDPPipeSync(gfx++);
+    gDPSetColorImage(gfx++, G_IM_FMT_RGBA, G_IM_SIZ_16b, this->width, this->fbuf);
+    gDPSetScissor(gfx++, G_SC_NON_INTERLACE, 0, 0, this->width, this->height);
+    *gfxp = gfx;
+}
+
+void func_800C170C(PreRenderContext* this, Gfx** gfxp, void* fbuf, void* fbufSave, u32 r, u32 g, u32 b, u32 a) {
+    Gfx* gfx;
+    s32 x;
+    s32 x2;
+    s32 add;
+    s32 uls;
+    s32 ult;
+    s32 lrs;
+    s32 lrt;
+    s32 unk;
+
+    LogUtils_CheckNullPointer("this", this, "../PreRender.c", 343);
+    LogUtils_CheckNullPointer("glistpp", gfxp, "../PreRender.c", 344);
+    gfx = *gfxp;
+    LogUtils_CheckNullPointer("glistp", gfx, "../PreRender.c", 346);
+
+    gDPPipeSync(gfx++);
+    gDPSetOtherMode(gfx++,
+                    G_AD_DISABLE | G_CD_DISABLE | G_CK_NONE | G_TC_FILT | G_TF_POINT | G_TT_NONE | G_TL_TILE |
+                        G_TD_CLAMP | G_TP_NONE | G_CYC_1CYCLE | G_PM_NPRIMITIVE,
+                    G_AC_NONE | G_ZS_PRIM | G_RM_OPA_SURF | G_RM_OPA_SURF2);
+    gDPSetEnvColor(gfx++, r, g, b, a);
+    gDPSetCombineLERP(gfx++, 0, 0, 0, TEXEL0, 0, 0, 0, 1, 0, 0, 0, TEXEL0, 0, 0, 0, 1);
+    gDPSetCombineLERP(gfx++, TEXEL0, 0, ENVIRONMENT, 0, 0, 0, 0, 1, TEXEL0, 0, ENVIRONMENT, 0, 0, 0, 0, 1);
+    gDPSetColorImage(gfx++, G_IM_FMT_RGBA, G_IM_SIZ_16b, this->width, fbufSave);
+    gDPSetScissor(gfx++, G_SC_NON_INTERLACE, 0, 0, this->width, this->height);
+
+    x2 = 0;
+    x = this->height;
+    add = 0x1000 / (this->width * 2);
+
+    while (x > 0) {
+        lrs = this->width - 1;
+
+        if (x < add) {
+            add = x;
+        }
+
+        uls = 0;
+        ult = x2;
+        lrt = (x2 + add - 1);
+
+        gDPLoadTextureTile(gfx++, fbuf, G_IM_FMT_RGBA, G_IM_SIZ_16b, this->width, this->height, uls, ult, lrs,
+                           lrt, 0, G_TX_NOMIRROR | G_TX_WRAP, G_TX_NOMIRROR | G_TX_WRAP, G_TX_NOMASK, G_TX_NOMASK,
+                           G_TX_NOLOD, G_TX_NOLOD);
+        if (1) {}
+        gSPTextureRectangle(gfx++, uls << 2, ult << 2, (lrs + 1) << 2, (lrt + 1) << 2, G_TX_RENDERTILE, uls << 5,
+                            ult << 5, 1 << 10, 1 << 10);
+
+        x -= add;
+        x2 += add;
+    }
+
+    gDPPipeSync(gfx++);
+    gDPSetColorImage(gfx++, G_IM_FMT_RGBA, G_IM_SIZ_16b, this->width, this->fbuf);
+    *gfxp = gfx;
+}
+
+void func_800C1AE8(PreRenderContext* this, Gfx** gfxp, void* fbuf, void* fbufSave) {
+    func_800C170C(this, gfxp, fbuf, fbufSave, 255, 255, 255, 255);
+}
+
+void func_800C1B24(PreRenderContext* this, Gfx** gfxp, void* fbuf, void* cvgSave) {
+    Gfx* gfx;
+    s32 x;
+    s32 x2;
+    s32 add;
+    s32 uls;
+    s32 ult;
+    s32 lrs;
+    s32 lrt;
+
+    LogUtils_CheckNullPointer("this", this, "../PreRender.c", 422);
+    LogUtils_CheckNullPointer("glistpp", gfxp, "../PreRender.c", 423);
+    gfx = *gfxp;
+    LogUtils_CheckNullPointer("glistp", gfx, "../PreRender.c", 425);
+
+    gDPPipeSync(gfx++);
+    gDPSetOtherMode(gfx++,
+                    G_AD_DISABLE | G_CD_DISABLE | G_CK_NONE | G_TC_FILT | G_TF_POINT | G_TT_NONE | G_TL_TILE |
+                        G_TD_CLAMP | G_TP_NONE | G_CYC_1CYCLE | G_PM_NPRIMITIVE,
+                    G_AC_NONE | G_ZS_PRIM | G_RM_PASS | G_RM_OPA_CI2);
+    gDPSetCombineLERP(gfx++, 0, 0, 0, TEXEL0, 0, 0, 0, 0, 0, 0, 0, TEXEL0, 0, 0, 0, 0);
+    gDPSetColorImage(gfx++, G_IM_FMT_I, G_IM_SIZ_8b, this->width, cvgSave);
+    gDPSetScissor(gfx++, G_SC_NON_INTERLACE, 0, 0, this->width, this->height);
+
+    x = this->height;
+    x2 = 0;
+    add = 0x1000 / (this->width * 2);
+
+    while (x > 0) {
+        lrs = this->width - 1;
+        if (x < add) {
+            add = x;
+        }
+        uls = 0;
+        ult = x2;
+        lrt = (x2 + add) - 1;
+
+        gDPLoadTextureTile(gfx++, fbuf, G_IM_FMT_IA, G_IM_SIZ_16b, this->width, this->height, uls, ult, lrs, lrt,
+                           0, G_TX_NOMIRROR | G_TX_WRAP, G_TX_NOMIRROR | G_TX_WRAP, G_TX_NOMASK, G_TX_NOMASK,
+                           G_TX_NOLOD, G_TX_NOLOD);
+        if (1) {}
+        gSPTextureRectangle(gfx++, uls << 2, ult << 2, (lrs + 1) << 2, (lrt + 1) << 2, G_TX_RENDERTILE, uls << 5,
+                            ult << 5, 1 << 10, 1 << 10);
+
+        x -= add;
+        x2 += add;
+    }
+
+    gDPPipeSync(gfx++);
+    gDPSetColorImage(gfx++, G_IM_FMT_RGBA, G_IM_SIZ_16b, this->width, this->fbuf);
+    *gfxp = gfx;
+}
+
+void func_800C1E9C(PreRenderContext* this, Gfx** gfxp) {
+    LogUtils_CheckNullPointer("this->zbuf_save", this->zbufSave, "../PreRender.c", 481);
+    LogUtils_CheckNullPointer("this->zbuf", this->zbuf, "../PreRender.c", 482);
+
+    if (!this->zbufSave || !this->zbuf) {
+        return;
+    }
+
+    func_800C0F28(this, gfxp, this->zbuf, this->zbufSave);
+}
+
+void func_800C1F20(PreRenderContext* this, Gfx** gfxp) {
+    LogUtils_CheckNullPointer("this->fbuf_save", this->fbufSave, "../PreRender.c", 495);
+    LogUtils_CheckNullPointer("this->fbuf", this->fbuf, "../PreRender.c", 496);
+
+    if (!this->fbufSave || !this->fbuf) {
+        return;
+    }
+
+    func_800C1AE8(this, gfxp, this->fbuf, this->fbufSave);
+}
+
+void func_800C1FA4(PreRenderContext* this, Gfx** gfxp) {
+    Gfx* gfx;
+
+    gfx = *gfxp;
+
+    gDPPipeSync(gfx++);
+    gDPSetBlendColor(gfx++, 255, 255, 255, 8);
+    gDPSetPrimDepth(gfx++, -1, -1);
+    gDPSetOtherMode(gfx++,
+                    G_AD_DISABLE | G_CD_DISABLE | G_CK_NONE | G_TC_FILT | G_TF_POINT | G_TT_NONE | G_TL_TILE |
+                        G_TD_CLAMP | G_TP_NONE | G_CYC_1CYCLE | G_PM_NPRIMITIVE,
+                    G_AC_NONE | G_ZS_PRIM | G_RM_VISCVG | G_RM_VISCVG2);
+    gDPSetScissor(gfx++, G_SC_NON_INTERLACE, 0, 0, this->width, this->height);
+    gDPFillRectangle(gfx++, 0, 0, this->width, this->height);
+    gDPPipeSync(gfx++);
+
+    *gfxp = gfx;
+}
+
+void func_800C20B4(PreRenderContext* this, Gfx** gfxp) {
+    func_800C1FA4(this, gfxp);
+    LogUtils_CheckNullPointer("this->cvg_save", this->cvgSave, "../PreRender.c", 532);
+    if (!this->cvgSave) {
+        return;
+    }
+
+    func_800C1B24(this, gfxp, this->fbuf, this->cvgSave);
+}
+
+void func_800C2118(PreRenderContext* this, Gfx** gfxp) {
+    func_800C0F28(this, gfxp, this->zbufSave, this->zbuf);
+}
+
+#ifdef NON_MATCHING
+// regalloc differences in gDPLoadMultiTile
+void func_800C213C(PreRenderContext* this, Gfx** gfxp) {
+    Gfx* gfx;
+    s32 y;
+    s32 y2;
+    s32 add;
+    s32 uls;
+    s32 ult;
+    s32 lrx;
+    s32 lry;
+
+    if (!this->cvgSave) {
+        return;
+    }
+
+    LogUtils_CheckNullPointer("this", this, "../PreRender.c", 563);
+    LogUtils_CheckNullPointer("glistpp", gfxp, "../PreRender.c", 564);
+    gfx = *gfxp;
+    LogUtils_CheckNullPointer("glistp", gfx, "../PreRender.c", 566);
+
+    gDPPipeSync(gfx++);
+    gDPSetEnvColor(gfx++, 255, 255, 255, 32);
+    gDPSetOtherMode(gfx++,
+                    G_AD_DISABLE | G_CD_DISABLE | G_CK_NONE | G_TC_FILT | G_TF_POINT | G_TT_NONE | G_TL_TILE |
+                        G_TD_CLAMP | G_TP_NONE | G_CYC_2CYCLE | G_PM_NPRIMITIVE,
+                    G_AC_NONE | G_ZS_PRIM | AA_EN | CVG_DST_CLAMP | ZMODE_OPA | CVG_X_ALPHA |
+                        GBL_c1(G_BL_CLR_IN, G_BL_0, G_BL_CLR_IN, G_BL_1) |
+                        GBL_c2(G_BL_CLR_IN, G_BL_0, G_BL_CLR_IN, G_BL_1));
+    gDPSetCombineLERP(gfx++, 0, 0, 0, TEXEL0, 1, 0, TEXEL1, ENVIRONMENT, 0, 0, 0, COMBINED, 0, 0, 0, COMBINED);
+
+    y = this->height;
+    add = 4;
+    y2 = 0;
+
+    while (y > 0) {
+        lrx = this->width - 1;
+        if (y < add) {
+            add = y;
+        }
+
+        uls = 0;
+        ult = y2;
+        lry = (y2 + add - 1);
+
+        gDPLoadMultiTile(gfx++, this->fbufSave, 0x0000, G_TX_RENDERTILE, G_IM_FMT_RGBA, G_IM_SIZ_16b, this->width,
+                         this->height, uls, ult, lrx, lry, 0, G_TX_NOMIRROR | G_TX_WRAP, G_TX_NOMIRROR | G_TX_WRAP,
+                         G_TX_NOMASK, G_TX_NOMASK, G_TX_NOLOD, G_TX_NOLOD);
+        gDPLoadMultiTile(gfx++, this->cvgSave, 0x0160, 1, G_IM_FMT_I, G_IM_SIZ_8b, this->width, this->height, uls,
+                         ult, lrx, lry, 0, G_TX_NOMIRROR | G_TX_WRAP, G_TX_NOMIRROR | G_TX_WRAP, G_TX_NOMASK,
+                         G_TX_NOMASK, G_TX_NOLOD, G_TX_NOLOD);
+
+        gSPTextureRectangle(gfx++, uls << 2, ult << 2, (lrx + 1) << 2, (lry + 1) << 2, G_TX_RENDERTILE, uls << 5,
+                            ult << 5, 1 << 10, 1 << 10);
+
+        if (1) {}
+        y -= add;
+        y2 += add;
+    }
+
+    gDPPipeSync(gfx++);
+    *gfxp = gfx;
+}
+#else
 #pragma GLOBAL_ASM("asm/non_matchings/code/PreRender/func_800C213C.s")
+#endif
+
+void func_800C24BC(PreRenderContext* this, Gfx** gfxp) {
+    func_800C0F28(this, gfxp, this->fbufSave, this->fbuf);
+}
 
-#pragma GLOBAL_ASM("asm/non_matchings/code/PreRender/func_800C24BC.s")
+void func_800C24E0(PreRenderContext* this, Gfx** gfxp) {
+    func_800C1258(this, gfxp);
+}
 
-#pragma GLOBAL_ASM("asm/non_matchings/code/PreRender/func_800C24E0.s")
+#ifdef NON_EQUIVALENT
+void func_800C2500(PreRenderContext* this, s32 x, s32 y) {
 
+    u32 buffA[3 * 8]; // 0x144
+    u32 buffR[3 * 8]; // 0x108
+    u32 buffG[3 * 8]; // 0xCC
+    u32 buffB[3 * 8]; // 0x90
+
+    u32 pxR, pxG, pxB, pxR2, pxG2, pxB2;
+
+    s32 i;
+
+    s32 x1, y1;
+    u32 px;
+    u32 comp;
+
+    u32 unk;
+    u16 pixel;
+
+    /*
+    you have to picture this as a 3x5 rectangle where the middle pixel (index 7) correspond to (x; y)
+      _ _ _ _ _
+    | 0 1 2 3 4 |
+    | 5 6 7 8 9 |
+    | A B C D E |
+      ‾ ‾ ‾ ‾ ‾
+    */
+    for (i = 0; i < 3 * 5; i++) {
+        x1 = (i % 5) + x - 2; // range (-2) - (2)
+        y1 = (i / 5) + x - 1; // range (-1) - (1)
+
+        if (x1 < 0) {
+            x1 = 0;
+        } else if (this->width - 1 < x1) {
+            x1 = this->width - 1;
+        }
+        if (y1 < 0) {
+            y1 = 0;
+        } else if (this->height - 1 < y1) {
+            y1 = this->height - 1;
+        }
+
+        px = this->fbufSave[y1 * this->width + x1];
+        comp = (px << 0) >> 27; // R
+        buffR[i] = (comp << 3) | (comp >> 2);
+        comp = (px << 5) >> 27; // G
+        buffG[i] = (comp << 3) | (comp >> 2);
+        comp = (px << 10) >> 27; // B
+        buffB[i] = (comp << 3) | (comp >> 2);
+        buffA[i] = this->cvgSave[y1 * this->width + x1] >> 5; // A
+    }
+
+    // 7 == buffA[7] ?
+    if (7 == buffA[7]) {
+        osSyncPrintf("Error, should not be in here \n");
+        return;
+    }
+
+    pxR = buffR[7];
+    pxG = buffG[7];
+    pxB = buffB[7];
+
+    for (i = 1; i < 3 * 5; i += 2) {
+        if (7 == buffA[i]) {
+            // R
+            if (pxR < buffR[i]) {
+                if (i != 1 && buffR[1] >= buffR[i] && 7 == buffA[1]) {
+                    pxR = buffR[i];
+                }
+                if (i != 3 && buffR[3] >= buffR[i] && 7 == buffA[3]) {
+                    pxR = buffR[i];
+                }
+                if (i != 5 && buffR[5] >= buffR[i] && 7 == buffA[5]) {
+                    pxR = buffR[i];
+                }
+                if (i != 7 && buffR[7] >= buffR[i] && 7 == buffA[7]) {
+                    pxR = buffR[i];
+                }
+                if (i != 9 && buffR[9] >= buffR[i] && 7 == buffA[9]) {
+                    pxR = buffR[i];
+                }
+                if (i != 11 && buffR[11] >= buffR[i] && 7 == buffA[11]) {
+                    pxR = buffR[i];
+                }
+                if (i != 13 && buffR[13] >= buffR[i] && 7 == buffA[13]) {
+                    pxR = buffR[i];
+                }
+            }
+            // G
+            if (pxG < buffG[i]) {
+                if (i != 1 && buffG[1] >= buffG[i] && 7 == buffA[1]) {
+                    pxG = buffG[i];
+                }
+                if (i != 3 && buffG[3] >= buffG[i] && 7 == buffA[3]) {
+                    pxG = buffG[i];
+                }
+                if (i != 5 && buffG[5] >= buffG[i] && 7 == buffA[5]) {
+                    pxG = buffG[i];
+                }
+                if (i != 7 && buffG[7] >= buffG[i] && 7 == buffA[7]) {
+                    pxG = buffG[i];
+                }
+                if (i != 9 && buffG[9] >= buffG[i] && 7 == buffA[9]) {
+                    pxG = buffG[i];
+                }
+                if (i != 11 && buffG[11] >= buffG[i] && 7 == buffA[11]) {
+                    pxG = buffG[i];
+                }
+                if (i != 13 && buffG[13] >= buffG[i] && 7 == buffA[13]) {
+                    pxG = buffG[i];
+                }
+            }
+            // B
+            if (pxB < buffB[i]) {
+                if (i != 1 && buffB[1] >= buffB[i] && 7 == buffA[1]) {
+                    pxB = buffB[i];
+                }
+                if (i != 3 && buffB[3] >= buffB[i] && 7 == buffA[3]) {
+                    pxB = buffB[i];
+                }
+                if (i != 5 && buffB[5] >= buffB[i] && 7 == buffA[5]) {
+                    pxB = buffB[i];
+                }
+                if (i != 7 && buffB[7] >= buffB[i] && 7 == buffA[7]) {
+                    pxB = buffB[i];
+                }
+                if (i != 9 && buffB[9] >= buffB[i] && 7 == buffA[9]) {
+                    pxB = buffB[i];
+                }
+                if (i != 11 && buffB[11] >= buffB[i] && 7 == buffA[11]) {
+                    pxB = buffB[i];
+                }
+                if (i != 13 && buffB[13] >= buffB[i] && 7 == buffA[13]) {
+                    pxB = buffB[i];
+                }
+            }
+
+            // R
+            if (pxR2 < buffR[i + 1]) {
+                if (i + 1 != 1 && buffR[1] >= buffR[i + 1] && 7 == buffA[1]) {
+                    pxR2 = buffR[i + 1];
+                }
+                if (i + 1 != 3 && buffR[3] >= buffR[i + 1] && 7 == buffA[3]) {
+                    pxR2 = buffR[i + 1];
+                }
+                if (i + 1 != 5 && buffR[5] >= buffR[i + 1] && 7 == buffA[5]) {
+                    pxR2 = buffR[i + 1];
+                }
+                if (i + 1 != 7 && buffR[7] >= buffR[i + 1] && 7 == buffA[7]) {
+                    pxR2 = buffR[i + 1];
+                }
+                if (i + 1 != 9 && buffR[9] >= buffR[i + 1] && 7 == buffA[9]) {
+                    pxR2 = buffR[i + 1];
+                }
+                if (i + 1 != 11 && buffR[11] >= buffR[i + 1] && 7 == buffA[11]) {
+                    pxR2 = buffR[i + 1];
+                }
+                if (i + 1 != 13 && buffR[13] >= buffR[i + 1] && 7 == buffA[13]) {
+                    pxR2 = buffR[i + 1];
+                }
+            }
+            // G
+            if (pxG2 < buffG[i + 1]) {
+                if (i + 1 != 1 && buffG[1] >= buffG[i + 1] && 7 == buffA[1]) {
+                    pxG2 = buffG[i + 1];
+                }
+                if (i + 1 != 3 && buffG[3] >= buffG[i + 1] && 7 == buffA[3]) {
+                    pxG2 = buffG[i + 1];
+                }
+                if (i + 1 != 5 && buffG[5] >= buffG[i + 1] && 7 == buffA[5]) {
+                    pxG2 = buffG[i + 1];
+                }
+                if (i + 1 != 7 && buffG[7] >= buffG[i + 1] && 7 == buffA[7]) {
+                    pxG2 = buffG[i + 1];
+                }
+                if (i + 1 != 9 && buffG[9] >= buffG[i + 1] && 7 == buffA[9]) {
+                    pxG2 = buffG[i + 1];
+                }
+                if (i + 1 != 11 && buffG[11] >= buffG[i + 1] && 7 == buffA[11]) {
+                    pxG2 = buffG[i + 1];
+                }
+                if (i + 1 != 13 && buffG[13] >= buffG[i + 1] && 7 == buffA[13]) {
+                    pxG2 = buffG[i + 1];
+                }
+            }
+            // B
+            if (pxB2 < buffB[i + 1]) {
+                if (i + 1 != 1 && buffB[1] >= buffB[i + 1] && 7 == buffA[1]) {
+                    pxB2 = buffB[i + 1];
+                }
+                if (i + 1 != 3 && buffB[3] >= buffB[i + 1] && 7 == buffA[3]) {
+                    pxB2 = buffB[i + 1];
+                }
+                if (i + 1 != 5 && buffB[5] >= buffB[i + 1] && 7 == buffA[5]) {
+                    pxB2 = buffB[i + 1];
+                }
+                if (i + 1 != 7 && buffB[7] >= buffB[i + 1] && 7 == buffA[7]) {
+                    pxB2 = buffB[i + 1];
+                }
+                if (i + 1 != 9 && buffB[9] >= buffB[i + 1] && 7 == buffA[9]) {
+                    pxB2 = buffB[i + 1];
+                }
+                if (i + 1 != 11 && buffB[11] >= buffB[i + 1] && 7 == buffA[11]) {
+                    pxB2 = buffB[i + 1];
+                }
+                if (i + 1 != 13 && buffB[13] >= buffB[i + 1] && 7 == buffA[13]) {
+                    pxB2 = buffB[i + 1];
+                }
+            }
+        }
+    }
+
+    unk = 7 - buffA[7];
+
+    pixel =
+        (((((((pxR + pxR2) - (buffR[7] << 1)) * unk + 4) >> 3) + buffR[7]) >> 3) << 3) | (pixel & 0xFF07); // RG + 7?
+    pixel = ((((((((pxG + pxG2) - (buffG[7] << 1)) * unk + 4) >> 3) + buffG[7]) >> 3) << 6) & 0x07C0) |
+            (pixel & 0xF83F); // R-BA
+    pixel = ((((((((pxB + pxB2) - (buffB[7] << 1)) * unk + 4) >> 3) + buffB[7]) >> 3) << 1) & 0x003E) |
+            (pixel & 0xFFC1); // RG-A
+    pixel |= 1;
+    this->fbufSave[y * this->width + x] = pixel;
+}
+#else
 #pragma GLOBAL_ASM("asm/non_matchings/code/PreRender/func_800C2500.s")
+#endif
 
 #pragma GLOBAL_ASM("asm/non_matchings/code/PreRender/func_800C2FE4.s")
 
-#pragma GLOBAL_ASM("asm/non_matchings/code/PreRender/func_800C3770.s")
+void PreRender_Calc(PreRenderContext* this) {
+    s32 x;
+    s32 y;
+
+    if (!this->cvgSave || !this->fbufSave) {
+        return;
+    }
+
+    for (y = 0; y < this->height; y++) {
+        for (x = 0; x < this->width; x++) {
+            s32 a = this->cvgSave[x + y * this->width];
+            a >>= 5;
+            a++;
+            if (a != 8) {
+                func_800C2500(this, x, y);
+            }
+        }
+    }
+
+    if (HREG(80) == 0xF ? HREG(81) : 0) {
+        func_800C2FE4(this);
+    }
+}