mirror of
https://github.com/FWGS/xash3d-fwgs
synced 2024-11-25 19:30:08 +01:00
274 lines
7.3 KiB
C
274 lines
7.3 KiB
C
#include "r_local.h"
|
|
|
|
// not really draw alias models here, but use this to draw triangles
|
|
|
|
|
|
affinetridesc_t r_affinetridesc;
|
|
|
|
|
|
int r_aliasblendcolor;
|
|
|
|
|
|
float aliastransform[3][4];
|
|
float aliasworldtransform[3][4];
|
|
float aliasoldworldtransform[3][4];
|
|
|
|
float s_ziscale;
|
|
static vec3_t s_alias_forward, s_alias_right, s_alias_up;
|
|
|
|
|
|
#define NUMVERTEXNORMALS 162
|
|
|
|
float r_avertexnormals[NUMVERTEXNORMALS][3] = {
|
|
#include "anorms.h"
|
|
};
|
|
|
|
|
|
void R_AliasSetUpTransform (void);
|
|
void R_AliasProjectAndClipTestFinalVert (finalvert_t *fv);
|
|
|
|
void R_AliasTransformFinalVerts( int numpoints, finalvert_t *fv, dtrivertx_t *oldv, dtrivertx_t *newv );
|
|
|
|
|
|
/*
|
|
================
|
|
R_AliasCheckBBox
|
|
================
|
|
*/
|
|
|
|
#define BBOX_TRIVIAL_ACCEPT 0
|
|
#define BBOX_MUST_CLIP_XY 1
|
|
#define BBOX_MUST_CLIP_Z 2
|
|
#define BBOX_TRIVIAL_REJECT 8
|
|
|
|
static void VectorInverse (vec3_t v)
|
|
{
|
|
v[0] = -v[0];
|
|
v[1] = -v[1];
|
|
v[2] = -v[2];
|
|
}
|
|
|
|
/*
|
|
================
|
|
R_SetUpWorldTransform
|
|
================
|
|
*/
|
|
void R_SetUpWorldTransform (void)
|
|
{
|
|
int i;
|
|
static float viewmatrix[3][4];
|
|
vec3_t angles;
|
|
|
|
// TODO: should really be stored with the entity instead of being reconstructed
|
|
// TODO: should use a look-up table
|
|
// TODO: could cache lazily, stored in the entity
|
|
//
|
|
|
|
s_ziscale = (float)0x8000 * (float)0x10000;
|
|
angles[ROLL] = 0;
|
|
angles[PITCH] = 0;
|
|
angles[YAW] = 0;
|
|
AngleVectors( angles, s_alias_forward, s_alias_right, s_alias_up );
|
|
|
|
// TODO: can do this with simple matrix rearrangement
|
|
|
|
memset( aliasworldtransform, 0, sizeof( aliasworldtransform ) );
|
|
memset( aliasoldworldtransform, 0, sizeof( aliasworldtransform ) );
|
|
|
|
for (i=0 ; i<3 ; i++)
|
|
{
|
|
aliasoldworldtransform[i][0] = aliasworldtransform[i][0] = s_alias_forward[i];
|
|
aliasoldworldtransform[i][0] = aliasworldtransform[i][1] = -s_alias_right[i];
|
|
aliasoldworldtransform[i][0] = aliasworldtransform[i][2] = s_alias_up[i];
|
|
}
|
|
|
|
aliasworldtransform[0][3] = -RI.vieworg[0];
|
|
aliasworldtransform[1][3] = -RI.vieworg[1];
|
|
aliasworldtransform[2][3] = -RI.vieworg[2];
|
|
|
|
//aliasoldworldtransform[0][3] = RI.currententity->oldorigin[0]-r_origin[0];
|
|
//aliasoldworldtransform[1][3] = RI.currententity->oldorigin[1]-r_origin[1];
|
|
//aliasoldworldtransform[2][3] = RI.currententity->oldorigin[2]-r_origin[2];
|
|
|
|
// FIXME: can do more efficiently than full concatenation
|
|
// memcpy( rotationmatrix, t2matrix, sizeof( rotationmatrix ) );
|
|
|
|
// R_ConcatTransforms (t2matrix, tmatrix, rotationmatrix);
|
|
|
|
// TODO: should be global, set when vright, etc., set
|
|
VectorCopy (RI.vright, viewmatrix[0]);
|
|
VectorCopy (RI.vup, viewmatrix[1]);
|
|
VectorInverse (viewmatrix[1]);
|
|
//VectorScale(viewmatrix[1], -1, viewmatrix[1]);
|
|
VectorCopy (RI.vforward, viewmatrix[2]);
|
|
|
|
viewmatrix[0][3] = 0;
|
|
viewmatrix[1][3] = 0;
|
|
viewmatrix[2][3] = 0;
|
|
|
|
// memcpy( aliasworldtransform, rotationmatrix, sizeof( aliastransform ) );
|
|
|
|
//R_ConcatTransforms (viewmatrix, aliasworldtransform, aliastransform);
|
|
Matrix3x4_ConcatTransforms(aliastransform, viewmatrix, aliasworldtransform );
|
|
|
|
aliasworldtransform[0][3] = 0;
|
|
aliasworldtransform[1][3] = 0;
|
|
aliasworldtransform[2][3] = 0;
|
|
|
|
//aliasoldworldtransform[0][3] = RI.currententity->oldorigin[0];
|
|
//aliasoldworldtransform[1][3] = RI.currententity->oldorigin[1];
|
|
//aliasoldworldtransform[2][3] = RI.currententity->oldorigin[2];
|
|
}
|
|
|
|
|
|
/*
|
|
================
|
|
R_AliasSetUpTransform
|
|
================
|
|
*/
|
|
void R_AliasSetUpTransform (void)
|
|
{
|
|
int i;
|
|
static float viewmatrix[3][4];
|
|
vec3_t angles;
|
|
|
|
// TODO: should really be stored with the entity instead of being reconstructed
|
|
// TODO: should use a look-up table
|
|
// TODO: could cache lazily, stored in the entity
|
|
//
|
|
|
|
s_ziscale = (float)0x8000 * (float)0x10000;
|
|
angles[ROLL] = RI.currententity->angles[ROLL];
|
|
angles[PITCH] = RI.currententity->angles[PITCH];
|
|
angles[YAW] = RI.currententity->angles[YAW];
|
|
AngleVectors( angles, s_alias_forward, s_alias_right, s_alias_up );
|
|
|
|
// TODO: can do this with simple matrix rearrangement
|
|
|
|
memset( aliasworldtransform, 0, sizeof( aliasworldtransform ) );
|
|
memset( aliasoldworldtransform, 0, sizeof( aliasworldtransform ) );
|
|
|
|
for (i=0 ; i<3 ; i++)
|
|
{
|
|
aliasoldworldtransform[i][0] = aliasworldtransform[i][0] = s_alias_forward[i];
|
|
aliasoldworldtransform[i][0] = aliasworldtransform[i][1] = -s_alias_right[i];
|
|
aliasoldworldtransform[i][0] = aliasworldtransform[i][2] = s_alias_up[i];
|
|
}
|
|
|
|
aliasworldtransform[0][3] = RI.currententity->origin[0]-RI.vieworg[0];
|
|
aliasworldtransform[1][3] = RI.currententity->origin[1]-RI.vieworg[1];
|
|
aliasworldtransform[2][3] = RI.currententity->origin[2]-RI.vieworg[2];
|
|
|
|
//aliasoldworldtransform[0][3] = RI.currententity->oldorigin[0]-r_origin[0];
|
|
//aliasoldworldtransform[1][3] = RI.currententity->oldorigin[1]-r_origin[1];
|
|
//aliasoldworldtransform[2][3] = RI.currententity->oldorigin[2]-r_origin[2];
|
|
|
|
// FIXME: can do more efficiently than full concatenation
|
|
// memcpy( rotationmatrix, t2matrix, sizeof( rotationmatrix ) );
|
|
|
|
// R_ConcatTransforms (t2matrix, tmatrix, rotationmatrix);
|
|
|
|
// TODO: should be global, set when vright, etc., set
|
|
VectorCopy (RI.vright, viewmatrix[0]);
|
|
VectorCopy (RI.vup, viewmatrix[1]);
|
|
VectorInverse (viewmatrix[1]);
|
|
//VectorScale(viewmatrix[1], -1, viewmatrix[1]);
|
|
VectorCopy (RI.vforward, viewmatrix[2]);
|
|
|
|
viewmatrix[0][3] = 0;
|
|
viewmatrix[1][3] = 0;
|
|
viewmatrix[2][3] = 0;
|
|
|
|
// memcpy( aliasworldtransform, rotationmatrix, sizeof( aliastransform ) );
|
|
|
|
//R_ConcatTransforms (viewmatrix, aliasworldtransform, aliastransform);
|
|
Matrix3x4_ConcatTransforms(aliastransform, viewmatrix, aliasworldtransform );
|
|
|
|
aliasworldtransform[0][3] = RI.currententity->origin[0];
|
|
aliasworldtransform[1][3] = RI.currententity->origin[1];
|
|
aliasworldtransform[2][3] = RI.currententity->origin[2];
|
|
|
|
//aliasoldworldtransform[0][3] = RI.currententity->oldorigin[0];
|
|
//aliasoldworldtransform[1][3] = RI.currententity->oldorigin[1];
|
|
//aliasoldworldtransform[2][3] = RI.currententity->oldorigin[2];
|
|
}
|
|
|
|
/*
|
|
================
|
|
R_AliasProjectAndClipTestFinalVert
|
|
================
|
|
*/
|
|
void R_AliasProjectAndClipTestFinalVert( finalvert_t *fv )
|
|
{
|
|
float zi;
|
|
float x, y, z;
|
|
|
|
// project points
|
|
x = fv->xyz[0];
|
|
y = fv->xyz[1];
|
|
z = fv->xyz[2];
|
|
zi = 1.0f / z;
|
|
|
|
fv->zi = zi * s_ziscale;
|
|
|
|
fv->u = (x * aliasxscale * zi) + aliasxcenter;
|
|
fv->v = (y * aliasyscale * zi) + aliasycenter;
|
|
|
|
if (fv->u < RI.aliasvrect.x)
|
|
fv->flags |= ALIAS_LEFT_CLIP;
|
|
if (fv->v < RI.aliasvrect.y)
|
|
fv->flags |= ALIAS_TOP_CLIP;
|
|
if (fv->u > RI.aliasvrectright)
|
|
fv->flags |= ALIAS_RIGHT_CLIP;
|
|
if (fv->v > RI.aliasvrectbottom)
|
|
fv->flags |= ALIAS_BOTTOM_CLIP;
|
|
}
|
|
|
|
void R_SetupFinalVert( finalvert_t *fv, float x, float y, float z, int light, int s, int t )
|
|
{
|
|
vec3_t v = {x, y, z};
|
|
|
|
fv->xyz[0] = DotProduct(v, aliastransform[0]) + aliastransform[0][3];
|
|
fv->xyz[1] = DotProduct(v, aliastransform[1]) + aliastransform[1][3];
|
|
fv->xyz[2] = DotProduct(v, aliastransform[2]) + aliastransform[2][3];
|
|
|
|
fv->flags = 0;
|
|
|
|
fv->l = light;
|
|
|
|
if ( fv->xyz[2] < ALIAS_Z_CLIP_PLANE )
|
|
{
|
|
fv->flags |= ALIAS_Z_CLIP;
|
|
}
|
|
else
|
|
{
|
|
R_AliasProjectAndClipTestFinalVert( fv );
|
|
}
|
|
|
|
fv->s = s << 16;
|
|
fv->t = t << 16;
|
|
}
|
|
|
|
void R_RenderTriangle( finalvert_t *fv1, finalvert_t *fv2, finalvert_t *fv3 )
|
|
{
|
|
|
|
if ( fv1->flags & fv2->flags & fv3->flags )
|
|
return ; // completely clipped
|
|
|
|
if ( ! (fv1->flags | fv2->flags | fv3->flags) )
|
|
{ // totally unclipped
|
|
aliastriangleparms.a = fv1;
|
|
aliastriangleparms.b = fv2;
|
|
aliastriangleparms.c = fv3;
|
|
|
|
R_DrawTriangle();
|
|
}
|
|
else
|
|
{ // partially clipped
|
|
R_AliasClipTriangle (fv1, fv2, fv3);
|
|
}
|
|
}
|
|
|
|
|
|
|