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Sun flare tweaks.

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This commit is contained in:
Andrei Drexler 2009-07-01 22:15:46 +00:00
parent b07ba66b9d
commit ab4cf97c04
1 changed files with 10 additions and 14 deletions
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24
reaction/cgame/cg_view.c
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@ -1139,6 +1139,7 @@ void CG_AddLensFlare(qboolean sun)
vec3_t end;
trace_t tr;
int timeDelta = 0, visible = 0;
float screenDist = 0.5f * cgs.screenWidth / tan(cg.refdef.fov_x * M_PI / 360.f);
cgs.flareFadeFactor = 0.0f;
@ -1160,15 +1161,9 @@ void CG_AddLensFlare(qboolean sun)
//if the sun is in fov
if (cgs.flareForwardFactor > 0 && abs(yaw) <= hfovx && abs(pitch) <= hfovy) {
//get the screen co-ordinates of the sun
#if 0
cx = 320 * (1.0f - dp[1] / (cos(yaw * PI180) * tan(hfovx * PI180)));
cy = 240 * (1.0f - dp[2] / (cos(pitch * PI180) * tan(hfovy * PI180)));
#else
//if we really needed them to be accurate, those above would be best
//but we actually don't !
cx = 320 * (1.0f - dp[1]);
cy = 240 * (1.0f - dp[2]);
#endif
cx = 320.f - screenDist * dp[1] / dp[0];
cy = 240.f - screenDist * dp[2] / dp[0];
cgs.lastSunX = cx;
cgs.lastSunY = cy;
cgs.lastSunTime = cg.time;
@ -1218,7 +1213,6 @@ void CG_AddLensFlare(qboolean sun)
{
float len = 0, color[4];
float size, hsize;
float ffov = cos(cg.refdef.fov_y/4);
int i;
VectorSet(dir, 320-cgs.lastSunX, 240-cgs.lastSunY, 0);
@ -1238,13 +1232,15 @@ void CG_AddLensFlare(qboolean sun)
CG_DrawPic(dp[0] - hsize, dp[1] - hsize, size, size,
cgs.media.flareShader[cg.flareShaderNum[i]]);
}
if (cgs.flareForwardFactor > ffov)
//if (cgs.flareForwardFactor > ffov)
{
float atten_x = 1.f - 2.f * Q_fabs(cgs.lastSunX - 320.f) / cgs.screenWidth;
float atten_y = 1.f - 2.f * Q_fabs(cgs.lastSunY - 240.f) / SCREEN_HEIGHT;
float min_atten = atten_x < atten_y ? atten_x : atten_y;
color[0] = color[1] = color[2] = 1.0f;
//color[3] = cgs.sunAlpha * cgs.flareForwardFactor * cgs.flareFadeFactor * FLARE_BLIND_ALPHA;
color[3] = (cgs.flareForwardFactor - ffov) / (1 - ffov) * cgs.flareFadeFactor * FLARE_BLIND_ALPHA;
//Makro - too expensive
//color[3] = cgs.sunAlpha * cgs.flareFadeFactor * FLARE_BLIND_ALPHA * (1.0f - abs(320 - cgs.lastSunX) / 320.0f) * (1.0f - abs(240 - cgs.lastSunY) / 240.0f);
color[3] = min_atten * min_atten * cgs.flareFadeFactor * FLARE_BLIND_ALPHA;
CG_FillRect(cgs.screenXMin, 0, cgs.screenWidth, SCREEN_HEIGHT, color);
}
}