You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
273 lines
7.3 KiB
273 lines
7.3 KiB
#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); |
|
} |
|
} |
|
|
|
|
|
|
|
|