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Merge pull request #47 from MrRaveYard/pr_negative_lights

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Allow use of negative color values for lights
This commit is contained in:
Magnus Norddahl 2022-10-15 12:36:43 +02:00 committed by GitHub
commit 207352f0c5
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2 changed files with 21 additions and 23 deletions
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38
src/level/level_light.cpp
View file

@ -229,9 +229,9 @@ void FLevel::CreateLights()
if (thing->type != THING_POINTLIGHT_STATIC && thing->type != THING_SPOTLIGHT_STATIC)
continue;
uint32_t lightcolor = 0xffffff;
float lightintensity = 1.0f;
float lightdistance = 0.0f;
vec3 lightColor(0, 0, 0);
float lightIntensity = 1.0f;
float lightDistance = 0.0f;
float innerAngleCos = -1.0f;
float outerAngleCos = -1.0f;
@ -242,50 +242,48 @@ void FLevel::CreateLights()
int r = thing->args[0];
int g = thing->args[1];
int b = thing->args[2];
int rgb = r;
rgb = rgb << 8;
rgb |= g;
rgb = rgb << 8;
rgb |= b;
lightcolor = (uint32_t)rgb;
lightColor = vec3(r / 255.0, g / 255.0, b / 255.0);
}
else if (thing->type == THING_SPOTLIGHT_STATIC)
{
lightcolor = (uint32_t)thing->args[0];
auto rgb = (uint32_t)thing->args[0];
// UDB's color picker will assign the color as a hex string, stored
// in the arg0str field. detect this, so that it can be converted into an int
if (thing->arg0str.Len() > 0)
{
FString hex = "0x" + thing->arg0str;
int rgb = hex.ToULong();
lightcolor = (uint32_t)rgb;
rgb = (uint32_t)hex.ToULong();
}
lightColor = vec3(
((rgb >> 16) & 0xFF) / 255.0,
((rgb >> 8) & 0xFF) / 255.0,
((rgb) & 0xFF) / 255.0
);
innerAngleCos = std::cos((float)thing->args[1] * 3.14159265359f / 180.0f);
outerAngleCos = std::cos((float)thing->args[2] * 3.14159265359f / 180.0f);
}
// this is known as "intensity" on dynamic lights (and in UDB)
lightdistance = thing->args[3];
lightDistance = thing->args[3];
// static light intensity (not to be confused with dynamic lights' intensity, which is actually static light distance
lightintensity = thing->alpha;
lightIntensity = thing->alpha;
if (lightdistance > 0.0f && lightintensity > 0.0f && lightcolor != 0)
if (lightDistance > 0.0f && lightIntensity > 0.0f && lightColor != vec3(0, 0, 0))
{
int x = thing->x >> FRACBITS;
int y = thing->y >> FRACBITS;
ThingLight thingLight;
thingLight.mapThing = thing;
thingLight.rgb.x = ((lightcolor >> 16) & 0xff) / 255.0f;
thingLight.rgb.y = ((lightcolor >> 8) & 0xff) / 255.0f;
thingLight.rgb.z = (lightcolor & 0xff) / 255.0f;
thingLight.intensity = lightintensity;
thingLight.rgb = lightColor;
thingLight.intensity = lightIntensity;
thingLight.innerAngleCos = std::max(innerAngleCos, outerAngleCos);
thingLight.outerAngleCos = outerAngleCos;
thingLight.radius = lightdistance;
thingLight.radius = lightDistance;
thingLight.height = thing->height;
thingLight.bCeiling = false;
thingLight.ssect = PointInSubSector(x, y);

6
src/lightmap/levelmesh.cpp
View file

@ -444,9 +444,9 @@ void LevelMesh::FinishSurface(RectPacker& packer, Surface* surface)
int offs = ((textureWidth * (i + surface->atlasY)) + surface->atlasX) * 3;
// convert RGB to bytes
currentTexture[offs + j * 3 + 0] = floatToHalf(clamp(colorSamples[i * sampleWidth + j].x, -65000.0f, 65000.0f));
currentTexture[offs + j * 3 + 1] = floatToHalf(clamp(colorSamples[i * sampleWidth + j].y, -65000.0f, 65000.0f));
currentTexture[offs + j * 3 + 2] = floatToHalf(clamp(colorSamples[i * sampleWidth + j].z, -65000.0f, 65000.0f));
currentTexture[offs + j * 3 + 0] = floatToHalf(clamp(colorSamples[i * sampleWidth + j].x, 0.0f, 65000.0f));
currentTexture[offs + j * 3 + 1] = floatToHalf(clamp(colorSamples[i * sampleWidth + j].y, 0.0f, 65000.0f));
currentTexture[offs + j * 3 + 2] = floatToHalf(clamp(colorSamples[i * sampleWidth + j].z, 0.0f, 65000.0f));
}
}
}