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- added light plane clipping for decals as well.

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This commit is contained in:
Christoph Oelckers 2016-02-01 21:45:26 +01:00
parent faa08410de
commit f11f86f05d
1 changed files with 69 additions and 14 deletions
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69
src/gl/scene/gl_decal.cpp
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@ -308,14 +308,7 @@ void GLWall::DrawDecal(DBaseDecal *decal)
gl_RenderState.SetObjectColor(decal->AlphaColor|0xff000000);
}
gl_SetColor(light, rel, p, a);
// for additively drawn decals we must temporarily set the fog color to black.
PalEntry fc = gl_RenderState.GetFogColor();
if (decal->RenderStyle.BlendOp == STYLEOP_Add && decal->RenderStyle.DestAlpha == STYLEALPHA_One)
{
gl_RenderState.SetFog(0,-1);
}
gl_SetRenderStyle(decal->RenderStyle, false, false);
@ -326,6 +319,17 @@ void GLWall::DrawDecal(DBaseDecal *decal)
if (decal->RenderStyle.SrcAlpha == STYLEALPHA_One) gl_RenderState.AlphaFunc(GL_GEQUAL, gl_mask_sprite_threshold);
else gl_RenderState.AlphaFunc(GL_GREATER, 0.f);
gl_SetColor(light, rel, p, a);
// for additively drawn decals we must temporarily set the fog color to black.
PalEntry fc = gl_RenderState.GetFogColor();
if (decal->RenderStyle.BlendOp == STYLEOP_Add && decal->RenderStyle.DestAlpha == STYLEALPHA_One)
{
gl_RenderState.SetFog(0,-1);
}
if (lightlist == NULL)
{
gl_RenderState.Apply();
FFlatVertex *ptr = GLRenderer->mVBO->GetBuffer();
for (i = 0; i < 4; i++)
@ -334,6 +338,39 @@ void GLWall::DrawDecal(DBaseDecal *decal)
ptr++;
}
GLRenderer->mVBO->RenderCurrent(ptr, GL_TRIANGLE_FAN);
}
else
{
for (unsigned k = 0; k < lightlist->Size(); k++)
{
secplane_t &lowplane = k == (*lightlist).Size() - 1 ? bottomplane : (*lightlist)[k + 1].plane;
float low1 = lowplane.ZatPoint(dv[1].x, dv[i].y);
float low2 = lowplane.ZatPoint(dv[2].x, dv[2].y);
if (low1 < dv[1].z && low2 < dv[2].z)
{
int thisll = (*lightlist)[k].caster != NULL ? gl_ClampLight(*(*lightlist)[k].p_lightlevel) : lightlevel;
FColormap thiscm;
thiscm.FadeColor = Colormap.FadeColor;
thiscm.CopyFrom3DLight(&(*lightlist)[k]);
gl_SetColor(thisll, rel, thiscm, a);
if (glset.nocoloredspritelighting) thiscm.Decolorize();
gl_SetFog(thisll, rel, &thiscm, RenderStyle == STYLE_Add);
gl_RenderState.SetSplitPlanes((*lightlist)[k].plane, lowplane);
gl_RenderState.Apply();
FFlatVertex *ptr = GLRenderer->mVBO->GetBuffer();
for (i = 0; i < 4; i++)
{
ptr->Set(dv[i].x, dv[i].z, dv[i].y, dv[i].u, dv[i].v);
ptr++;
}
GLRenderer->mVBO->RenderCurrent(ptr, GL_TRIANGLE_FAN);
}
if (low1 <= dv[0].z && low2 <= dv[3].z) break;
}
}
rendered_decals++;
gl_RenderState.SetTextureMode(TM_MODULATE);
@ -350,14 +387,32 @@ void GLWall::DrawDecal(DBaseDecal *decal)
void GLWall::DoDrawDecals()
{
if (seg->sidedef && seg->sidedef->AttachedDecals)
{
if (lightlist != NULL)
{
gl_RenderState.EnableSplit(true);
glEnable(GL_CLIP_DISTANCE3);
glEnable(GL_CLIP_DISTANCE4);
}
else
{
gl_SetFog(lightlevel, rellight + getExtraLight(), &Colormap, false);
}
DBaseDecal *decal = seg->sidedef->AttachedDecals;
while (decal)
{
DrawDecal(decal);
decal = decal->WallNext;
}
if (lightlist != NULL)
{
glDisable(GL_CLIP_DISTANCE3);
glDisable(GL_CLIP_DISTANCE4);
gl_RenderState.EnableSplit(false);
}
}
}