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SoftGPU: Fix a little bit more, but doesn't work still

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UnknownShadow200 2024-06-15 21:21:02 +10:00
parent 44d0197e53
commit 8dc49de72f
1 changed files with 4 additions and 5 deletions
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9
src/Graphics_SoftGPU.c
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@ -345,7 +345,7 @@ static int TransformVertex3D(int index, Vertex* vertex) {
vertex->v = (v->V + texOffsetY);
vertex->c = v->Col;
}
return vertex->z >= -vertex->w;
return vertex->z >= 0.0f;
}
static void ViewportVertex3D(Vertex* vertex) {
@ -577,14 +577,13 @@ static void DrawTriangle3D(Vertex* V0, Vertex* V1, Vertex* V2) {
// https://github.com/behindthepixels/EDXRaster/blob/master/EDXRaster/Core/Clipper.h
static void ClipLine(Vertex* v1, Vertex* v2, Vertex* V) {
float d0 = v1->z + v1->w;
float d1 = v2->z + v2->w;
float t = Math_AbsF(d0 / (d1 - d0));
float t = Math_AbsF(v1->z / (v2->z - v1->z));
float invt = 1.0f - t;
V->x = invt * v1->x + t * v2->x;
V->y = invt * v1->y + t * v2->y;
V->z = invt * v1->z + t * v2->z;
//V->z = invt * v1->z + t * v2->z;
V->z = 0.0f; // Z will always be 0 since clipping against w=0 (near plane) anyways
V->w = invt * v1->w + t * v2->w;
V->u = invt * v1->u + t * v2->u;