/*
=================
R_DrawSpriteModel
=================
*/
EXPORT void R_DrawSpriteModel (entity_t *e, entity_t *currententity,
double cltime, vec3_t vup, vec3_t vright)
{
vec3_t point;
mspriteframe_t *frame;
float *up, *right;
vec3_t v_forward, v_right, v_up;
msprite_t *psprite;
// don't even bother culling, because it's just a single
// polygon without a surface cache
frame = R_GetSpriteFrame( e, cltime );
psprite = currententity->model->cache.data;
if (psprite->type == SPR_ORIENTED)
{ // bullet marks on walls
dr_AngleVectors (currententity->angles, v_forward, v_right, v_up);
up = v_up;
right = v_right;
}
else
{ // normal sprite
up = vup;
right = vright;
}
glColor3f (1,1,1);
dr_GL_DisableMultitexture();
dr_GL_Bind(frame->gl_texturenum);
glEnable (GL_ALPHA_TEST);
glBegin (GL_QUADS);
glTexCoord2f (0, 1);
dr_VectorMA (e->origin, frame->down, up, point);
dr_VectorMA (point, frame->left, right, point);
glVertex3fv (point);
glTexCoord2f (0, 0);
dr_VectorMA (e->origin, frame->up, up, point);
dr_VectorMA (point, frame->left, right, point);
glVertex3fv (point);
glTexCoord2f (1, 0);
dr_VectorMA (e->origin, frame->up, up, point);
dr_VectorMA (point, frame->right, right, point);
glVertex3fv (point);
glTexCoord2f (1, 1);
dr_VectorMA (e->origin, frame->down, up, point);
dr_VectorMA (point, frame->right, right, point);
glVertex3fv (point);
glEnd ();
glDisable (GL_ALPHA_TEST);
}
int R_GetSpriteTexture( const model_t *m_pSpriteModel, int frame )
{
if( !m_pSpriteModel || m_pSpriteModel->type != mod_sprite || !m_pSpriteModel->cache.data )
return 0;
return R_GetSpriteFrame( m_pSpriteModel, frame, 0.0f )->gl_texturenum;
}
/*
=============
R_GetSpriteParms
same as GetImageParms but used
for sprite models
=============
*/
void R_GetSpriteParms( int *frameWidth, int *frameHeight, int *numFrames, int currentFrame, const model_t *pSprite )
{
mspriteframe_t *pFrame;
if( !pSprite || pSprite->type != mod_sprite ) return; // bad model ?
pFrame = R_GetSpriteFrame( pSprite, currentFrame, 0.0f );
if( frameWidth ) *frameWidth = pFrame->width;
if( frameHeight ) *frameHeight = pFrame->height;
if( numFrames ) *numFrames = pSprite->numframes;
}
/*
=================
R_DrawSpriteModel
=================
*/
void R_DrawSpriteModel (entity_t *e)
{
vec3_t point;
mspriteframe_t *frame;
float *up, *right;
vec3_t v_forward, v_right, v_up;
msprite_t *psprite;
// 2001-12-15 Oriented sprites fix by Atomizer start
vec3_t fixed_origin;
vec3_t temp;
// 2001-12-15 Oriented sprites fix by Atomizer end
// don't even bother culling, because it's just a single
// polygon without a surface cache
frame = R_GetSpriteFrame (e);
psprite = currententity->model->cache.data;
VectorCopy(e->origin,fixed_origin); // 2001-12-15 Oriented sprites fix by Atomizer
if (psprite->type == SPR_ORIENTED)
{ // bullet marks on walls
AngleVectors (currententity->angles, v_forward, v_right, v_up);
// 2001-12-15 Oriented sprites fix by Atomizer start
VectorScalarMult(v_forward,-2,temp);
VectorAdd(temp,fixed_origin,fixed_origin);
// 2001-12-15 Oriented sprites fix by Atomizer end
up = v_up;
right = v_right;
}
else
{ // normal sprite
up = vup;
right = vright;
}
glColor3f (1,1,1);
GL_DisableMultitexture();
GL_Bind(frame->gl_texturenum);
glEnable (GL_ALPHA_TEST);
glBegin (GL_QUADS);
glTexCoord2f (0, 1);
// 2001-12-15 Oriented sprites fix by Atomizer start
// VectorMA (e->origin, frame->down, up, point);
VectorMA (fixed_origin, frame->down, up, point);
// 2001-12-15 Oriented sprites fix by Atomizer end
VectorMA (point, frame->left, right, point);
glVertex3fv (point);
glTexCoord2f (0, 0);
// 2001-12-15 Oriented sprites fix by Atomizer start
// VectorMA (e->origin, frame->up, up, point);
VectorMA (fixed_origin, frame->up, up, point);
// 2001-12-15 Oriented sprites fix by Atomizer end
VectorMA (point, frame->left, right, point);
glVertex3fv (point);
glTexCoord2f (1, 0);
// 2001-12-15 Oriented sprites fix by Atomizer start
// VectorMA (e->origin, frame->up, up, point);
VectorMA (fixed_origin, frame->up, up, point);
// 2001-12-15 Oriented sprites fix by Atomizer end
VectorMA (point, frame->right, right, point);
glVertex3fv (point);
glTexCoord2f (1, 1);
// 2001-12-15 Oriented sprites fix by Atomizer start
// VectorMA (e->origin, frame->down, up, point);
VectorMA (fixed_origin, frame->down, up, point);
// 2001-12-15 Oriented sprites fix by Atomizer end
VectorMA (point, frame->right, right, point);
glVertex3fv (point);
glEnd ();
glDisable (GL_ALPHA_TEST);
}
/*
=================
R_DrawSpriteModel
=================
*/
void R_DrawSpriteModel (entity_t *e)
{
//vec3_t point;
mspriteframe_t *frame;
float *up, *right;
vec3_t v_forward, v_right, v_up;
msprite_t *psprite;
// don't even bother culling, because it's just a single
// polygon without a surface cache
frame = R_GetSpriteFrame (e);
psprite = currententity->model->cache.data;
if (psprite->type == SPR_ORIENTED)
{ // bullet marks on walls
AngleVectors (currententity->angles, v_forward, v_right, v_up);
up = v_up;
right = v_right;
}
else
{ // normal sprite
up = vup;
right = vright;
}
glColor4ub (255,255,255,255);
GL_DisableMultitexture();
GL_Bind(frame->gl_texturenum);
glEnable (GL_ALPHA_TEST);
#ifdef ESQUAKE
float quadTexCoord[] =
{
0, 1,
0, 0,
1, 0,
1, 1
};
float quadVertices3[3*4];
vec_t * pVec = quadVertices3;
VectorMA (e->origin, frame->down, up, pVec);
VectorMA (pVec, frame->left, right, pVec);
pVec += 3;
VectorMA (e->origin, frame->up, up, pVec);
VectorMA (pVec, frame->left, right, pVec);
pVec += 3;
VectorMA (e->origin, frame->up, up, pVec);
VectorMA (pVec, frame->right, right, pVec);
pVec += 3;
VectorMA (e->origin, frame->down, up, pVec);
VectorMA (pVec, frame->right, right, pVec);
glTexCoordPointer(2, GL_FLOAT, sizeof(GLfloat)*2, quadTexCoord);
glVertexPointer(3, GL_FLOAT, sizeof(GLfloat)*3, quadVertices3);
glEnableClientState(GL_VERTEX_ARRAY);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
glDisableClientState(GL_VERTEX_ARRAY);
#else
glBegin (GL_QUADS);
glTexCoord2f (0, 1);
VectorMA (e->origin, frame->down, up, point);
VectorMA (point, frame->left, right, point);
glVertex3fv (point);
glTexCoord2f (0, 0);
VectorMA (e->origin, frame->up, up, point);
VectorMA (point, frame->left, right, point);
glVertex3fv (point);
glTexCoord2f (1, 0);
VectorMA (e->origin, frame->up, up, point);
VectorMA (point, frame->right, right, point);
glVertex3fv (point);
glTexCoord2f (1, 1);
VectorMA (e->origin, frame->down, up, point);
VectorMA (point, frame->right, right, point);
glVertex3fv (point);
glEnd ();
#endif
glDisable (GL_ALPHA_TEST);
}
/*
=================
R_DrawSpriteModel -- johnfitz -- rewritten: now supports all orientations
=================
*/
void R_DrawSpriteModel (entity_t *e)
{
vec3_t point, v_forward, v_right, v_up;
msprite_t *psprite;
mspriteframe_t *frame;
float *s_up, *s_right;
float angle, sr, cr;
//TODO: frustum cull it?
frame = R_GetSpriteFrame (e);
psprite = (msprite_t *) currententity->model->cache.data;
switch(psprite->type)
{
case SPR_VP_PARALLEL_UPRIGHT: //faces view plane, up is towards the heavens
v_up[0] = 0;
v_up[1] = 0;
v_up[2] = 1;
s_up = v_up;
s_right = vright;
break;
case SPR_FACING_UPRIGHT: //faces camera origin, up is towards the heavens
VectorSubtract(currententity->origin, r_origin, v_forward);
v_forward[2] = 0;
VectorNormalizeFast(v_forward);
v_right[0] = v_forward[1];
v_right[1] = -v_forward[0];
v_right[2] = 0;
v_up[0] = 0;
v_up[1] = 0;
v_up[2] = 1;
s_up = v_up;
s_right = v_right;
break;
case SPR_VP_PARALLEL: //faces view plane, up is towards the top of the screen
s_up = vup;
s_right = vright;
break;
case SPR_ORIENTED: //pitch yaw roll are independent of camera
AngleVectors (currententity->angles, v_forward, v_right, v_up);
s_up = v_up;
s_right = v_right;
break;
case SPR_VP_PARALLEL_ORIENTED: //faces view plane, but obeys roll value
angle = currententity->angles[ROLL] * M_PI_DIV_180;
sr = sin(angle);
cr = cos(angle);
v_right[0] = vright[0] * cr + vup[0] * sr;
v_right[1] = vright[1] * cr + vup[1] * sr;
v_right[2] = vright[2] * cr + vup[2] * sr;
v_up[0] = vright[0] * -sr + vup[0] * cr;
v_up[1] = vright[1] * -sr + vup[1] * cr;
v_up[2] = vright[2] * -sr + vup[2] * cr;
s_up = v_up;
s_right = v_right;
break;
default:
return;
}
//johnfitz: offset decals
if (psprite->type == SPR_ORIENTED)
GL_PolygonOffset (OFFSET_DECAL);
glColor3f (1,1,1);
GL_DisableMultitexture();
GL_Bind(frame->gltexture);
glEnable (GL_ALPHA_TEST);
glBegin (GL_TRIANGLE_FAN); //was GL_QUADS, but changed to support r_showtris
glTexCoord2f (0, frame->tmax);
VectorMA (e->origin, frame->down, s_up, point);
VectorMA (point, frame->left, s_right, point);
glVertex3fv (point);
glTexCoord2f (0, 0);
VectorMA (e->origin, frame->up, s_up, point);
VectorMA (point, frame->left, s_right, point);
glVertex3fv (point);
glTexCoord2f (frame->smax, 0);
VectorMA (e->origin, frame->up, s_up, point);
VectorMA (point, frame->right, s_right, point);
glVertex3fv (point);
glTexCoord2f (frame->smax, frame->tmax);
VectorMA (e->origin, frame->down, s_up, point);
VectorMA (point, frame->right, s_right, point);
glVertex3fv (point);
glEnd ();
glDisable (GL_ALPHA_TEST);
//johnfitz: offset decals
if (psprite->type == SPR_ORIENTED)
GL_PolygonOffset (OFFSET_NONE);
}
/*
=================
R_DrawSpriteModel
=================
*/
void R_DrawSpriteModel (entity_t *e)
{
vec3_t point;
mspriteframe_t *frame;
float *up, *right;
vec3_t v_forward, v_right, v_up;
msprite_t *psprite;
// don't even bother culling, because it's just a single
// polygon without a surface cache
frame = R_GetSpriteFrame (e);
psprite = (msprite_t*) currententity->model->cache.data;
if (psprite->type == SPR_ORIENTED)
{ // bullet marks on walls
AngleVectors (currententity->angles, v_forward, v_right, v_up);
up = v_up;
right = v_right;
}
else
{ // normal sprite
up = vup;
right = vright;
}
glColor3f (1,1,1);
GL_DisableMultitexture();
GL_Bind(frame->gl_texturenum);
glEnable (GL_ALPHA_TEST);
#ifdef USE_OPENGLES
{
float* pPoint = gVertexBuffer;
float texCoords[] = {
0, 1,
0, 0,
1, 0,
1, 1
};
VectorMA (e->origin, frame->down, up, point);
VectorMA (point, frame->left, right, pPoint);
pPoint += 3;
VectorMA (e->origin, frame->up, up, point);
VectorMA (point, frame->left, right, pPoint);
pPoint += 3;
VectorMA (e->origin, frame->up, up, point);
VectorMA (point, frame->right, right, pPoint);
pPoint += 3;
VectorMA (e->origin, frame->down, up, point);
VectorMA (point, frame->right, right, pPoint);
glVertexPointer(3, GL_FLOAT, 0, gVertexBuffer);
glTexCoordPointer(2, GL_FLOAT, 0, texCoords);
glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
}
#else
glBegin (GL_QUADS);
glTexCoord2f (0, 1);
VectorMA (e->origin, frame->down, up, point);
VectorMA (point, frame->left, right, point);
glVertex3fv (point);
glTexCoord2f (0, 0);
VectorMA (e->origin, frame->up, up, point);
VectorMA (point, frame->left, right, point);
glVertex3fv (point);
glTexCoord2f (1, 0);
VectorMA (e->origin, frame->up, up, point);
VectorMA (point, frame->right, right, point);
glVertex3fv (point);
glTexCoord2f (1, 1);
VectorMA (e->origin, frame->down, up, point);
VectorMA (point, frame->right, right, point);
glVertex3fv (point);
glEnd ();
#endif
glDisable (GL_ALPHA_TEST);
}