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Merge pull request #1332 from whatsavalue3/master

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Improve PS1 Rendering
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UnknownShadow200 2025-01-24 19:42:31 +11:00 committed by GitHub
commit a07478f468
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GPG Key ID: B5690EEEBB952194
2 changed files with 134 additions and 18 deletions
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4
src/Game.h
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@ -39,8 +39,10 @@ extern cc_string Game_Mppass;
#if defined CC_BUILD_N64
#define DEFAULT_VIEWDIST 20
#elif defined CC_BUILD_NDS || defined CC_BUILD_PS1 || defined CC_BUILD_SATURN
#elif defined CC_BUILD_NDS || defined CC_BUILD_SATURN
#define DEFAULT_VIEWDIST 192
#elif defined CC_BUILD_PS1
#define DEFAULT_VIEWDIST 64
#else
#define DEFAULT_VIEWDIST 512
#endif

126
src/Graphics_PS1.c
View File

@ -486,7 +486,16 @@ static void PreprocessTexturedVertices(void) {
dst->z = XYZFixed(src->z);
u = src->U * 0.99f;
v = src->V == 1.0f ? 0.99f : src->V;
if(src->V == 1.0f)
{
v = 0.99f;
}
else
{
v = src->V;
}
//u = src->U * 0.99f;
//v = src->V == 1.0f ? 0.99f : src->V;
dst->u = UVFixed(u);
dst->v = UVFixed(v);
@ -707,6 +716,26 @@ static int Transform(IVec3* result, struct PS1VertexTextured* a) {
result->y = (y * -120 / w) + 120;
result->z = (z * OT_LENGTH / w);
if(result->x > 640)
{
return 1;
}
else if(result->x < -320)
{
return 1;
}
if(result->y > 480)
{
return 1;
}
else if(result->y < -240)
{
return 1;
}
/*SVECTOR coord;
POLY_FT4 poly;
coord.vx = a->x; coord.vy = a->y; coord.vz = a->z;
@ -831,7 +860,29 @@ static void DrawTexturedQuad(struct PS1VertexTextured* v0, struct PS1VertexTextu
static CC_NOINLINE void SubdivideQuad(struct PS1VertexTextured* v0, struct PS1VertexTextured* v1,
struct PS1VertexTextured* v2, struct PS1VertexTextured* v3, int level) {
if (level > 2) return;
if (level > 5) return;
int v1short = 0;
int v3short = 0;
int diff = v0->x - v1->x;
int mask = diff>>31;
int vertsize = (diff^mask)-mask;
diff = v0->y - v1->y;
mask = diff>>31;
vertsize += (diff^mask)-mask;
diff = v0->z - v1->z;
mask = diff>>31;
vertsize += (diff^mask)-mask;
if(vertsize < 128) v1short = 1;
diff = v0->x - v3->x;
mask = diff>>31;
vertsize = (diff^mask)-mask;
diff = v0->y - v3->y;
mask = diff>>31;
vertsize += (diff^mask)-mask;
diff = v0->z - v3->z;
mask = diff>>31;
vertsize += (diff^mask)-mask;
if(vertsize < 128) v3short = 1;
struct PS1VertexTextured m01, m02, m03, m12, m32;
// v0 --- m01 --- v1
@ -842,18 +893,54 @@ static CC_NOINLINE void SubdivideQuad(struct PS1VertexTextured* v0, struct PS1Ve
// | \ | \ |
// v3 ----m32---- v2
CalcMidpoint(m01, v0, v1);
CalcMidpoint(m02, v0, v2);
if(v1short)
{
if(v3short)
{
return;
}
CalcMidpoint(m03, v0, v3);
CalcMidpoint(m12, v1, v2);
DrawTexturedQuad( v0, v1, &m12, &m03, level);
DrawTexturedQuad(&m03, &m12, v2, v3, level);
}
else
{
if(v3short)
{
CalcMidpoint(m01, v0, v1);
CalcMidpoint(m32, v3, v2);
DrawTexturedQuad( v0, &m01, &m32, v3, level);
DrawTexturedQuad(&m01, v1, v2, &m32, level);
return;
}
CalcMidpoint(m02, v0, v2);
CalcMidpoint(m01, v0, v1);
CalcMidpoint(m32, v3, v2);
CalcMidpoint(m03, v0, v3);
CalcMidpoint(m12, v1, v2);
DrawTexturedQuad( v0, &m01, &m02, &m03, level);
DrawTexturedQuad(&m01, v1, &m12, &m02, level);
DrawTexturedQuad(&m02, &m12, v2, &m32, level);
DrawTexturedQuad(&m03, &m02, &m32, v3, level);
}
}
void CrossProduct(IVec3* a, IVec3* b, IVec3* out)
{
out->x = (a->y*b->z-a->z*b->y) >> 9;
out->y = (a->z*b->x-a->x*b->z) >> 9;
out->z = (a->x*b->y-a->y*b->x) >> 9;
}
static CC_INLINE void DrawTexturedQuad(struct PS1VertexTextured* v0, struct PS1VertexTextured* v1,
struct PS1VertexTextured* v2, struct PS1VertexTextured* v3, int level) {
IVec3 coords[4];
@ -862,9 +949,36 @@ static CC_INLINE void DrawTexturedQuad(struct PS1VertexTextured* v0, struct PS1V
clipped |= Transform(&coords[1], v1);
clipped |= Transform(&coords[2], v2);
clipped |= Transform(&coords[3], v3);
if (clipped) return;//{ SubdivideQuad(v0, v1, v2, v3, level + 1); return; }
int p = (coords[0].z + coords[1].z + coords[2].z + coords[3].z) / 4;
IVec3 crossprod[2];
IVec3 normal;
crossprod[0].x = coords[1].x-coords[0].x;
crossprod[0].y = coords[1].y-coords[0].y;
crossprod[0].z = coords[1].z-coords[0].z;
crossprod[1].x = coords[2].x-coords[0].x;
crossprod[1].y = coords[2].y-coords[0].y;
crossprod[1].z = coords[2].z-coords[0].z;
CrossProduct(&crossprod[0],&crossprod[1],&normal);
if((normal.x*coords[0].x+normal.y*coords[0].y+normal.z*coords[0].z) > 0) return;
if (clipped) { SubdivideQuad(v0, v1, v2, v3, level + 1); return; }
//int p = (coords[0].z + coords[1].z + coords[2].z + coords[3].z) / 4;
int p = coords[3].z;
if (p < coords[0].z)
{
p = coords[0].z;
}
if (p < coords[1].z)
{
p = coords[1].z;
}
if (p < coords[2].z)
{
p = coords[2].z;
}
if (p < 0 || p >= OT_LENGTH) return;
struct CC_POLY_FT4* poly = new_primitive(sizeof(struct CC_POLY_FT4));