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updated variable names to match Ryan Dwyer's work clarifying the zbuffer behavior

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joshuarwood committed 2025-05-03 19:57:52 -05:00
1 parent 75e34ace8c
commit 0d6c557982
6 files changed
+95 -75
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src/game/bondgun.c
+4 -6
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@@ -8477,7 +8477,7 @@ glabel var7f1aca90
/* f0a71e4: 100002d5 */ b .L0f0a7d3c /* f0a71e4: 100002d5 */ b .L0f0a7d3c
/* f0a71e8: 8fbf0034 */ lw $ra,0x34($sp) /* f0a71e8: 8fbf0034 */ lw $ra,0x34($sp)
.L0f0a71ec: .L0f0a71ec:
/* f0a71ec: 0fc5d9ad */ jal zbufDrawArtifactsOffscreen /* f0a71ec: 0fc5d9ad */ jal zbufSaveArtifactDepths
/* f0a71f0: 8fa4014c */ lw $a0,0x14c($sp) /* f0a71f0: 8fa4014c */ lw $a0,0x14c($sp)
/* f0a71f4: afa2014c */ sw $v0,0x14c($sp) /* f0a71f4: afa2014c */ sw $v0,0x14c($sp)
/* f0a71f8: 0c002ca0 */ jal viPrepareZbuf /* f0a71f8: 0c002ca0 */ jal viPrepareZbuf
@@ -9318,7 +9318,7 @@ glabel var7f1aca90
/* f0a71e4: 100002d5 */ b .L0f0a7d3c /* f0a71e4: 100002d5 */ b .L0f0a7d3c
/* f0a71e8: 8fbf0034 */ lw $ra,0x34($sp) /* f0a71e8: 8fbf0034 */ lw $ra,0x34($sp)
.L0f0a71ec: .L0f0a71ec:
/* f0a71ec: 0fc5d9ad */ jal zbufDrawArtifactsOffscreen /* f0a71ec: 0fc5d9ad */ jal zbufSaveArtifactDepths
/* f0a71f0: 8fa4014c */ lw $a0,0x14c($sp) /* f0a71f0: 8fa4014c */ lw $a0,0x14c($sp)
/* f0a71f4: afa2014c */ sw $v0,0x14c($sp) /* f0a71f4: afa2014c */ sw $v0,0x14c($sp)
/* f0a71f8: 0c002ca0 */ jal viPrepareZbuf /* f0a71f8: 0c002ca0 */ jal viPrepareZbuf
@@ -10159,7 +10159,7 @@ glabel var7f1aca90
/* f0a4f30: 100002cd */ beqz $zero,.NB0f0a5a68 /* f0a4f30: 100002cd */ beqz $zero,.NB0f0a5a68
/* f0a4f34: 8fbf0034 */ lw $ra,0x34($sp) /* f0a4f34: 8fbf0034 */ lw $ra,0x34($sp)
.NB0f0a4f38: .NB0f0a4f38:
/* f0a4f38: 0fc5c4d5 */ jal zbufDrawArtifactsOffscreen /* f0a4f38: 0fc5c4d5 */ jal zbufSaveArtifactDepths
/* f0a4f3c: 8fa40144 */ lw $a0,0x144($sp) /* f0a4f3c: 8fa40144 */ lw $a0,0x144($sp)
/* f0a4f40: afa20144 */ sw $v0,0x144($sp) /* f0a4f40: afa20144 */ sw $v0,0x144($sp)
/* f0a4f44: 0c002d00 */ jal viPrepareZbuf /* f0a4f44: 0c002d00 */ jal viPrepareZbuf
@@ -10956,9 +10956,7 @@ void bgunRender(Gfx **gdlptr)
return; return;
} }
#ifdef PLATFORM_N64 // TODO gdl = zbufSaveArtifactDepths(gdl);
gdl = zbufDrawArtifactsOffscreen(gdl);
#endif
gdl = viPrepareZbuf(gdl); gdl = viPrepareZbuf(gdl);
gdl = vi0000b1d0(gdl); gdl = vi0000b1d0(gdl);
src/game/game_13c510.c
+50 -30
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@@ -439,14 +439,14 @@ void artifactsCalculateGlaresForRoom(s32 roomnum)
if (index < MAX_ARTIFACTS) { if (index < MAX_ARTIFACTS) {
#ifndef PLATFORM_N64 #ifndef PLATFORM_N64
artifact->unk02 = artifactTestLos(&spec, &g_BgRooms[roomnum].pos, xi, yi); artifact->visiblelos = artifactTestLos(&spec, &g_BgRooms[roomnum].pos, xi, yi);
#endif #endif
artifact->unk04 = floatToIntDepth(f0) >> 2; artifact->expecteddepth = floatToIntDepth(f0) >> 2;
artifact->unk08 = &g_ZbufPtr1[viGetWidth() * yi + xi]; artifact->zbufptr = &g_ZbufPtr1[viGetWidth() * yi + xi];
artifact->light = &roomlights[i]; artifact->light = &roomlights[i];
artifact->type = ARTIFACTTYPE_GLARE; artifact->type = ARTIFACTTYPE_GLARE;
artifact->unk0c.u16_2 = xi; artifact->screenx = xi;
artifact->unk0c.u16_1 = yi; artifact->screeny = yi;
} }
} }
} }
@@ -457,7 +457,7 @@ void artifactsCalculateGlaresForRoom(s32 roomnum)
} }
} }
u8 func0f13d3c4(u8 arg0, u8 arg1) u8 artifactsClamp(u8 arg0, u8 arg1)
{ {
if (arg1 >= arg0 + 7) { if (arg1 >= arg0 + 7) {
return arg0 + 7; return arg0 + 7;
@@ -505,18 +505,18 @@ Gfx *artifactsRenderGlaresForRoom(Gfx *gdl, s32 roomnum)
u16 min; u16 min;
u16 max; u16 max;
f32 lightop_cur_frac; f32 lightop_cur_frac;
s32 t2; s32 numgood;
struct light *light; struct light *light;
u8 *s3; u8 *s3;
s32 k; s32 k;
s32 count; s32 count;
u16 t4; u16 actualdepth;
f32 add; f32 add;
s32 l; s32 l;
f32 brightness; f32 brightness;
s32 avg; s32 tolerance;
f32 f0; f32 f0;
s32 v1; s32 difference;
s32 r; s32 r;
s32 g; s32 g;
s32 b; s32 b;
@@ -542,6 +542,12 @@ Gfx *artifactsRenderGlaresForRoom(Gfx *gdl, s32 roomnum)
struct light *light2 = artifacts[i].light; struct light *light2 = artifacts[i].light;
count = 0; count = 0;
/**
* light arifacts are created from several, closely spaced
* textures that give the appearance of a dynamic light glare
* as the character moves. Loop to count all the sub-artifacts
* in this light.
*/
for (j = i; j < MAX_ARTIFACTS && artifacts[j].type == ARTIFACTTYPE_GLARE && artifacts[j].light == light2; j++) { for (j = i; j < MAX_ARTIFACTS && artifacts[j].type == ARTIFACTTYPE_GLARE && artifacts[j].light == light2; j++) {
count++; count++;
} }
@@ -552,51 +558,65 @@ Gfx *artifactsRenderGlaresForRoom(Gfx *gdl, s32 roomnum)
if (roomnum == light->roomnum) { if (roomnum == light->roomnum) {
lightindex = ((uintptr_t)light - (uintptr_t)g_BgLightsFileData) / sizeof(struct light); lightindex = ((uintptr_t)light - (uintptr_t)g_BgLightsFileData) / sizeof(struct light);
s3 = &var800a41a0[lightindex * 3]; s3 = &var800a41a0[lightindex * 3];
t2 = 0; numgood = 0;
min = 0xffff; min = 0xffff;
max = 0; max = 0;
/**
* loop to determine the min & max depth of
* the sub-artifacts composing this room light.
*/
for (k = i; k < i + count; k++) { for (k = i; k < i + count; k++) {
if (artifacts[k].unk04 > max) { if (artifacts[k].expecteddepth > max) {
max = artifacts[k].unk04; max = artifacts[k].expecteddepth;
} }
if (artifacts[k].unk04 < min) { if (artifacts[k].expecteddepth < min) {
min = artifacts[k].unk04; min = artifacts[k].expecteddepth;
} }
} }
avg = (max - min) >> 1; /**
* Define a depth tolerance from the min & max
* depths of sub-artifacts for a given light.
* This will be used to determine which light
* artifacts are visible when comparing depth
* values of lights to other items rendered
* on screen. Without this, the lights would
* constantly flicker due to z-fighting caused
* by the low precision of the N64 depth.
*/
tolerance = (max - min) >> 1;
if (avg < 25) { if (tolerance < 25) {
avg = 25; tolerance = 25;
} }
for (k = i; k < i + count; k++) { for (k = i; k < i + count; k++) {
#ifdef PLATFORM_N64 u16 expecteddepth;
u16 tmp; actualdepth = (artifacts[k].actualdepth & 0xfffc) >> 2;
t4 = (artifacts[k].unk02 & 0xfffc) >> 2; expecteddepth = artifacts[k].expecteddepth;
tmp = artifacts[k].unk04;
if (tmp < t4) { if (expecteddepth < actualdepth) {
v1 = t4 - tmp; difference = actualdepth - expecteddepth;
} else { } else {
v1 = tmp - t4; difference = expecteddepth - actualdepth;
} }
if (avg >= v1) { #ifdef PLATFORM_N64
t2++; if (difference <= tolerance) {
numgood++;
} }
#else #else
t2 += artifacts[k].unk02; numgood += artifacts[k].visiblelos;
#endif #endif
artifacts[k].type = ARTIFACTTYPE_FREE; artifacts[k].type = ARTIFACTTYPE_FREE;
} }
s3[0] = func0f13d3c4(s3[0], t2 * 2); s3[0] = artifactsClamp(s3[0], numgood * 2);
if (t2 > 0) { if (numgood > 0) {
brightness = viGetFovY() * 0.017453292f; brightness = viGetFovY() * 0.017453292f;
add = cosf(brightness) / sinf(brightness) * 14.6f; add = cosf(brightness) / sinf(brightness) * 14.6f;
src/game/sky.c
+5 -5
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@@ -2518,11 +2518,11 @@ void skyCreateSunArtifact(struct artifact *artifact, s32 x, s32 y)
sunpos.x = env->suns[i].pos[0]; sunpos.x = env->suns[i].pos[0];
sunpos.y = env->suns[i].pos[1]; sunpos.y = env->suns[i].pos[1];
sunpos.z = env->suns[i].pos[2]; sunpos.z = env->suns[i].pos[2];
artifact->unk02 = artifactTestLos(&sunpos, &zero, x, y) * 0xfffc; artifact->visiblelos = artifactTestLos(&sunpos, &zero, x, y) * 0xfffc;
#endif #endif
artifact->unk08 = &g_ZbufPtr1[(s32)camGetScreenWidth() * y + x]; artifact->zbufptr = &g_ZbufPtr1[(s32)camGetScreenWidth() * y + x];
artifact->unk0c.u16_2 = x; artifact->screenx = x;
artifact->unk0c.u16_1 = y; artifact->screeny = y;
artifact->type = ARTIFACTTYPE_CIRCLE; artifact->type = ARTIFACTTYPE_CIRCLE;
} }
} }
@@ -2533,7 +2533,7 @@ f32 skyGetArtifactGroupIntensityFrac(struct artifact *artifacts)
s32 i; s32 i;
for (i = 0; i < 8; i++) { for (i = 0; i < 8; i++) {
if (artifacts[i].type == ARTIFACTTYPE_CIRCLE && artifacts[i].unk02 == 0xfffc) { if (artifacts[i].type == ARTIFACTTYPE_CIRCLE && artifacts[i].actualdepth == 0xfffc) {
sum += 0.125f; sum += 0.125f;
} }
} }
src/game/zbuf.c
+18 -18
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@@ -177,23 +177,23 @@ u16 *zbufGetArtifactsCfb(s32 index)
return addr; return addr;
} }
Gfx *zbufDrawArtifactsOffscreen(Gfx *gdl) Gfx *zbufSaveArtifactDepths(Gfx *gdl)
{ {
struct artifact *artifacts = schedGetWriteArtifacts(); struct artifact *artifacts = schedGetWriteArtifacts();
u32 stack; u32 stack;
u16 *sp4c = g_ZbufPtr1; u16 *zbuf = g_ZbufPtr1;
u32 s4 = 0; u32 numsamples = 0;
u16 *sp44; u16 *samples;
u16 *s2; u16 *thissample;
u16 *image; u16 *zbufrow;
s32 i; s32 i;
viGetBackBuffer(); viGetBackBuffer();
sp44 = zbufGetArtifactsCfb(g_SchedWriteArtifactsIndex); samples = zbufGetArtifactsCfb(g_SchedWriteArtifactsIndex);
g_SchedSpecialArtifactIndexes[g_SchedWriteArtifactsIndex] = 1; g_SchedSpecialArtifactIndexes[g_SchedWriteArtifactsIndex] = 1;
gDPPipeSync(gdl++); gDPPipeSync(gdl++);
gDPSetColorImage(gdl++, G_IM_FMT_RGBA, G_IM_SIZ_16b, viGetBufWidth(), OS_PHYSICAL_TO_K0(sp44)); gDPSetColorImage(gdl++, G_IM_FMT_RGBA, G_IM_SIZ_16b, viGetBufWidth(), OS_PHYSICAL_TO_K0(samples));
gDPSetScissor(gdl++, G_SC_NON_INTERLACE, 0, 0, SCREEN_320, SCREEN_240); gDPSetScissor(gdl++, G_SC_NON_INTERLACE, 0, 0, SCREEN_320, SCREEN_240);
gDPSetCycleType(gdl++, G_CYC_COPY); gDPSetCycleType(gdl++, G_CYC_COPY);
gDPSetTile(gdl++, G_IM_FMT_RGBA, G_IM_SIZ_16b, 0, 0x0000, 5, 0, G_TX_NOMIRROR | G_TX_WRAP, G_TX_NOMASK, G_TX_NOLOD, G_TX_NOMIRROR | G_TX_WRAP, G_TX_NOMASK, G_TX_NOLOD); gDPSetTile(gdl++, G_IM_FMT_RGBA, G_IM_SIZ_16b, 0, 0x0000, 5, 0, G_TX_NOMIRROR | G_TX_WRAP, G_TX_NOMASK, G_TX_NOLOD, G_TX_NOMIRROR | G_TX_WRAP, G_TX_NOMASK, G_TX_NOLOD);
@@ -220,24 +220,24 @@ Gfx *zbufDrawArtifactsOffscreen(Gfx *gdl)
if (1); if (1);
if (artifacts[i].type != ARTIFACTTYPE_FREE) { if (artifacts[i].type != ARTIFACTTYPE_FREE) {
s2 = &sp44[s4]; thissample = &samples[numsamples];
image = &sp4c[artifacts[i].unk0c.u16_1 * viGetWidth()]; zbufrow = &zbuf[artifacts[i].screeny * viGetWidth()];
gDPPipeSync(gdl++); gDPPipeSync(gdl++);
gDPSetTextureImage(gdl++, G_IM_FMT_RGBA, G_IM_SIZ_16b, SCREEN_320, image); gDPSetTextureImage(gdl++, G_IM_FMT_RGBA, G_IM_SIZ_16b, SCREEN_320, zbufrow);
gDPLoadSync(gdl++); gDPLoadSync(gdl++);
gDPLoadBlock(gdl++, 5, 0, 0, viGetWidth() - 1, 0); gDPLoadBlock(gdl++, 5, 0, 0, viGetWidth() - 1, 0);
gDPPipeSync(gdl++); gDPPipeSync(gdl++);
gSPTextureRectangle(gdl++, gSPTextureRectangle(gdl++,
s4 << 2, 0, numsamples << 2, 0,
(s4 + 3) << 2, 0, (numsamples + 3) << 2, 0,
G_TX_RENDERTILE, (artifacts[i].unk0c.u16_2 * 32) + 16, 0x0010, 0x1000, 0); G_TX_RENDERTILE, (artifacts[i].screenx * 32) + 16, 0x0010, 0x1000, 0);
artifacts[i].unk0c.u16p = s2; artifacts[i].depthptr = thissample;
s4++; numsamples++;
if (s2); if (thissample);
} }
} }
@@ -251,7 +251,7 @@ Gfx *zbufDrawArtifactsOffscreen(Gfx *gdl)
gDPSetTexturePersp(gdl++, G_TP_PERSP); gDPSetTexturePersp(gdl++, G_TP_PERSP);
gDPSetColorDither(gdl++, G_CD_BAYER); gDPSetColorDither(gdl++, G_CD_BAYER);
if (sp44); if (samples);
return gdl; return gdl;
} }
src/include/types.h
+10 -8
View File
@@ -3494,17 +3494,19 @@ struct audioconfig {
struct artifact { struct artifact {
u16 type; u16 type;
u16 unk02; u16 actualdepth;
u16 unk04; u16 expecteddepth;
u16 unk06; u16 *zbufptr;
u16 *unk08; #ifndef PLATFORM_N64
u16 visiblelos;
#endif
union { union {
u16 *u16p; u16 *depthptr;
struct { struct {
u16 u16_1; u16 screeny;
u16 u16_2; u16 screenx;
};
}; };
} unk0c;
struct light *light; struct light *light;
}; };
src/lib/sched.c
+8 -8
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@@ -540,20 +540,20 @@ void schedUpdatePendingArtifacts(void)
struct artifact *artifact = &artifacts[i]; struct artifact *artifact = &artifacts[i];
if (artifact->type != ARTIFACTTYPE_FREE) { if (artifact->type != ARTIFACTTYPE_FREE) {
u16 *unk08 = artifact->unk08; u16 *currdepthptr = artifact->zbufptr;
u16 value08 = unk08[0]; u16 currdepth = *currdepthptr;
if (g_SchedSpecialArtifactIndexes[g_SchedPendingArtifactsIndex] == 1) { if (g_SchedSpecialArtifactIndexes[g_SchedPendingArtifactsIndex] == 1) {
u16 *unk0c = artifact->unk0c.u16p; u16 *prevdepthptr = artifact->depthptr;
u16 value0c = unk0c[0]; u16 prevdepth = *prevdepthptr;
if (value0c > value08) { if (currdepth < prevdepth) {
artifact->unk02 = value08; artifact->actualdepth = currdepth;
} else { } else {
artifact->unk02 = value0c; artifact->actualdepth = prevdepth;
} }
} else { } else {
artifact->unk02 = value08; artifact->actualdepth = currdepth;
} }
} }
} }