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This commit is contained in:
Jeff Teunissen 2000-09-16 09:45:52 +00:00
parent d2708c4bc1
commit 18aa60183d
1 changed files with 33 additions and 8 deletions
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41
source/gl_part.c
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@ -1,7 +1,7 @@
/*
r_part.c
gl_part.c
@description@
OpenGL particle rendering
Copyright (C) 1996-1997 Id Software, Inc.
@ -58,9 +58,21 @@ void R_DrawParticles (void)
vec3_t up, right;
float scale;
unsigned char *at;
unsigned char theAlpha;
qboolean alphaTestEnabled;
qboolean blendEnabled;
glBindTexture (GL_TEXTURE_2D, particletexture);
glEnable (GL_BLEND);
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
// LordHavoc: particles should not affect zbuffer
glDepthMask (0);
if (!(blendEnabled = glIsEnabled (GL_BLEND))) {
glEnable (GL_BLEND);
}
if ((alphaTestEnabled = glIsEnabled (GL_ALPHA_TEST))) {
glDisable (GL_ALPHA_TEST);
}
glBegin (GL_TRIANGLES);
VectorScale (vup, 1.5, up);
@ -71,7 +83,7 @@ void R_DrawParticles (void)
time2 = frametime * 10; // 15;
time1 = frametime * 5;
grav = frametime * sv_gravity->value * 0.05;
dvel = 4*frametime;
dvel = frametime * 4;
for ( ;; )
{
@ -108,7 +120,15 @@ void R_DrawParticles (void)
scale = 1;
else
scale = 1 + scale * 0.004;
glColor3ubv ((byte *)&d_8to24table[(int)p->color]);
at = (byte *)&d_8to24table[(int)p->color];
if (p->type==pt_fire)
theAlpha = 255*(6-p->ramp)/6;
else
theAlpha = 255;
if (lighthalf)
glColor4ub((byte) ((int) at[0] >> 1), (byte) ((int) at[1] >> 1), (byte) ((int) at[2] >> 1), theAlpha);
else
glColor4ub(at[0], at[1], at[2], theAlpha);
glTexCoord2f (0,0);
glVertex3fv (p->org);
glTexCoord2f (1,0);
@ -179,8 +199,13 @@ void R_DrawParticles (void)
}
glEnd ();
glDisable (GL_BLEND);
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
if (alphaTestEnabled) {
glEnable (GL_ALPHA_TEST);
}
if (!blendEnabled) {
glDisable (GL_BLEND);
}
glDepthMask (1);
}
/*