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Improve prism effect

This commit is contained in:
ABelliqueux 2021-07-29 12:04:31 +02:00
parent c61b93bfb4
commit 4da341b970
2 changed files with 69 additions and 36 deletions
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4
include/graphics.h
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@ -11,13 +11,13 @@ void drawPoly(MESH * mesh, int atime, int * camMode, char ** nextpri, u_long * o
// Tri drawing
long drawTri(MESH * mesh, int atime, int * camMode, char ** nextpri, u_long * ot, char * db, DRAWENV * draw, int t, int i);
void set3VertexLerPos(MESH * mesh, long t);
void set3Prism(POLY_GT3 * poly, MESH * mesh, DRAWENV * draw, char * db, int i);
void set3Prism(POLY_GT3 * poly, MESH * mesh, DRAWENV * draw, char * db, int i, int t);
void set3Tex(POLY_GT3 * poly, MESH * mesh, DRAWENV * draw, long t, int i);
long interpolateTri(POLY_GT3 * poly, MESH * mesh, long t);
//Quad drawing
long drawQuad(MESH * mesh, int atime, int * camMode, char ** nextpri, u_long * ot, char * db, DRAWENV * draw, int t, int i);
void set4VertexLerPos(MESH * mesh, long t);
void set4Prism(POLY_GT4 * poly4, MESH * mesh, DRAWENV * draw, char * db, int i);
void set4Prism(POLY_GT4 * poly4, MESH * mesh, DRAWENV * draw, char * db, int i, int t);
void set4Tex(POLY_GT4 * poly4, MESH * mesh, DRAWENV * draw, long t, int i);
int set4Subdiv(MESH * mesh, POLY_GT4 * poly4, u_long * ot, long t, int i, char ** nextpri);
long interpolateQuad(POLY_GT4 * poly4, MESH * mesh, long t);

101
src/graphics.c
View File

@ -153,7 +153,7 @@ long interpolateQuad(POLY_GT4 * poly4, MESH * mesh, long t){
);
return nclip;
};
void set3Prism(POLY_GT3 * poly, MESH * mesh, DRAWENV * draw, char * db, int i){
void set3Prism(POLY_GT3 * poly, MESH * mesh, DRAWENV * draw, char * db, int i, int t){
// Transparency effect :
// Use current DRAWENV clip as TPAGE instead of regular textures
//
@ -163,44 +163,77 @@ void set3Prism(POLY_GT3 * poly, MESH * mesh, DRAWENV * draw, char * db, int i){
//~ if (fixed_BGS){
//~ ( (POLY_GT3 *) poly )->tpage = getTPage( 0, 0, 320, 0 );
//~ }
// Use Drawenv's Tpages 0,0 and 0,256
setTPage( poly, 2, 0, 0, !(*db)<<8);
//~ SetShadeTex( poly, 1 );
// Use projected coordinates (results from RotAverage...) as UV coords and clamp them to 0-255,0-224 -> 240 - 16
setUV3( poly,
(poly->x0 < 0 ? 0 : (poly->x0 + 4) > 255 ? 255 : (poly->x0 + 4) ),
(poly->y0 < 0 ? 0 : (poly->y0 + 4) > 224 ? 224 : (poly->y0 + 4) ),
(poly->x1 < 0 ? 0 : (poly->x1 + 4) > 255 ? 255 : (poly->x1 + 4) ),
(poly->y1 < 0 ? 0 : (poly->y1 + 4) > 224 ? 224 : (poly->y1 + 4) ),
(poly->x2 < 0 ? 0 : (poly->x2 + 4) > 255 ? 255 :( poly->x2 + 4) ),
(poly->y2 < 0 ? 0 :( poly->y2 + 4) > 224 ? 224 : (poly->y2 + 4) )
// ( 256 * 4096 ) / 320 ) => 3277
// ( 240 * 4096 ) / 256 ) => 3840
setUV3( poly,
(poly->x0 * 3277) >> 12,
((poly->y0 * 3840) >> 12) - (!(*db) << 4),
(poly->x1 * 3277) >> 12,
((poly->y1 * 3840) >> 12) - (!(*db) << 4),
(poly->x2 * 3277) >> 12,
((poly->y2 * 3840) >> 12) - (!(*db) << 4)
);
//~ setRGB0(poly, mesh->tmesh->c[i].r, mesh->tmesh->c[i].g, mesh->tmesh->c[i].b);
//~ setRGB1(poly, mesh->tmesh->c[i+2].r, mesh->tmesh->c[i+2].g, mesh->tmesh->c[i+2].b);
//~ setRGB2(poly, mesh->tmesh->c[i+1].r, mesh->tmesh->c[i+1].g, mesh->tmesh->c[i+1].b);
// Add color tint
CVECTOR prismCol = {0,70,255, 0};
// work color vectors
CVECTOR outCol, outCol1, outCol2;
// Find local color from normal and prismCol
gte_NormalColorDpq3( &mesh->tmesh->n[ mesh->index[t].order.vx ],
&mesh->tmesh->n[ mesh->index[t].order.vz ],
&mesh->tmesh->n[ mesh->index[t].order.vy ],
&prismCol,
mesh->p,
&outCol,
&outCol1,
&outCol2
);
// Set col
setRGB0(poly, outCol.r, outCol.g , outCol.b);
setRGB1(poly, outCol1.r, outCol1.g, outCol1.b);
setRGB2(poly, outCol2.r, outCol2.g, outCol2.b);
};
void set4Prism(POLY_GT4 * poly4, MESH * mesh, DRAWENV * draw, char * db, int i){
( (POLY_GT4 *) poly4)->tpage = getTPage( 2, 0,
draw[*db].clip.x,
draw[*db].clip.y
);
void set4Prism(POLY_GT4 * poly4, MESH * mesh, DRAWENV * draw, char * db, int i, int t){
// Use Drawenv's Tpages 0,0 and 0,256
setTPage( poly4, 2, 0, 0, !(*db)<<8);
// Use projected coordinates
setUV4( poly4,
(poly4->x0 < 0? 0 : poly4->x0 > 255? 255 : poly4->x0),
(poly4->y0 < 0? 0 : poly4->y0 > 224? 224 : poly4->y0),
(poly4->x1 < 0? 0 : poly4->x1 > 255? 255 : poly4->x1),
(poly4->y1 < 0? 0 : poly4->y1 > 224? 224 : poly4->y1),
(poly4->x2 < 0? 0 : poly4->x2 > 255? 255 : poly4->x2),
(poly4->y2 < 0? 0 : poly4->y2 > 224? 224 : poly4->y2),
(poly4->x3 < 0? 0 : poly4->x3 > 255? 255 : poly4->x3),
(poly4->y3 < 0? 0 : poly4->y3 > 224? 224 : poly4->y3)
(poly4->x0 * 3277) >> 12,
// Remove 16 pix offset when using tpage 0,256
((poly4->y0 * 3840) >> 12) - (!(*db) << 4),
(poly4->x1 * 3277) >> 12,
((poly4->y1 * 3840) >> 12) - (!(*db) << 4),
(poly4->x2 * 3277) >> 12,
((poly4->y2 * 3840) >> 12) - (!(*db) << 4),
(poly4->x3 * 3277) >> 12,
((poly4->y3 * 3840) >> 12) - (!(*db) << 4)
);
setRGB0(poly4, mesh->tmesh->c[i+3].r, mesh->tmesh->c[i+3].g, mesh->tmesh->c[i+3].b);
setRGB1(poly4, mesh->tmesh->c[i+2].r, mesh->tmesh->c[i+2].g, mesh->tmesh->c[i+2].b);
setRGB2(poly4, mesh->tmesh->c[i+0].r, mesh->tmesh->c[i+0].g, mesh->tmesh->c[i+0].b);
setRGB3(poly4, mesh->tmesh->c[i+1].r, mesh->tmesh->c[i+1].g, mesh->tmesh->c[i+1].b);
// Add color tint
CVECTOR prismCol = {0,70,255, 0};
// work color vectors
CVECTOR outCol, outCol1, outCol2, outCol3;
// Find local color from normal and prismCol
gte_NormalColorDpq3( &mesh->tmesh->n[ mesh->index[t].order.pad ],
&mesh->tmesh->n[ mesh->index[t].order.vz ],
&mesh->tmesh->n[ mesh->index[t].order.vx ],
&prismCol,
mesh->p,
&outCol,
&outCol1,
&outCol2
);
gte_NormalColorDpq( &mesh->tmesh->n[ mesh->index[t].order.vy ],
&prismCol,
mesh->p,
&outCol3
);
// Set col
setRGB0(poly4, outCol.r, outCol.g , outCol.b);
setRGB1(poly4, outCol1.r, outCol1.g, outCol1.b);
setRGB2(poly4, outCol2.r, outCol2.g, outCol2.b);
setRGB3(poly4, outCol3.r, outCol3.g, outCol3.b);
};
void set3Tex(POLY_GT3 * poly, MESH * mesh, DRAWENV * draw, long t, int i){
CVECTOR outCol = { 0,0,0,0 };
@ -371,7 +404,7 @@ long drawQuad(MESH * mesh, int atime, int * camMode, char ** nextpri, u_long * o
}
// Transparency effect
if (mesh->isPrism){
set4Prism(poly4, mesh, draw, db, i);
set4Prism(poly4, mesh, draw, db, i, t);
} else {
set4Tex(poly4, mesh, draw, t, i);
}
@ -454,7 +487,7 @@ long drawTri(MESH * mesh, int atime, int * camMode, char ** nextpri, u_long * ot
}
// If isPrism flag is set, use it
if ( mesh->isPrism ) {
set3Prism(poly, mesh, draw, db, i);
set3Prism(poly, mesh, draw, db, i, t);
} else {
set3Tex(poly, mesh, draw, t, i);
}