Files
LuaVox/assets/shaders/chunk/node_opaque.frag

93 lines
2.7 KiB
GLSL

#version 460
// layout(early_fragment_tests) in;
layout(location = 0) in FragmentObj {
vec3 GeoPos; // Реальная позиция в мире
vec3 Normal;
flat uint Texture; // Текстура
vec2 UV;
} Fragment;
layout(location = 0) out vec4 Frame;
struct InfoSubTexture {
uint Flags; // 1 isExist
uint PosXY, WidthHeight;
uint AnimationFrames_AnimationTimePerFrame;
};
uniform layout(set = 0, binding = 0) sampler2D MainAtlas;
layout(set = 0, binding = 1) readonly buffer MainAtlasLayoutObj {
uint SubsCount;
uint Counter;
uint WidthHeight;
InfoSubTexture SubTextures[];
} MainAtlasLayout;
uniform layout(set = 1, binding = 0) sampler2D LightMap;
layout(set = 1, binding = 1) readonly buffer LightMapLayoutObj {
vec3 Color;
} LightMapLayout;
vec4 atlasColor(uint texId, vec2 uv)
{
uint flags = (texId & 0xffff0000) >> 16;
texId &= 0xffff;
vec4 color = vec4(uv, 0, 1);
if((flags & (2 | 4)) > 0)
{
if((flags & 2) > 0)
color = vec4(1, 1, 1, 1);
else if((flags & 4) > 0)
{
color = vec4(1);
}
}
else if(texId >= uint(MainAtlasLayout.SubsCount))
return vec4(((int(gl_FragCoord.x / 128) + int(gl_FragCoord.y / 128)) % 2 ) * vec3(0, 1, 1), 1);
else {
InfoSubTexture texInfo = MainAtlasLayout.SubTextures[texId];
if(texInfo.Flags == 0)
return vec4(((int(gl_FragCoord.x / 128) + int(gl_FragCoord.y / 128)) % 2 ) * vec3(1, 0, 1), 1);
uint posX = texInfo.PosXY & 0xffff;
uint posY = (texInfo.PosXY >> 16) & 0xffff;
uint width = texInfo.WidthHeight & 0xffff;
uint height = (texInfo.WidthHeight >> 16) & 0xffff;
uint awidth = MainAtlasLayout.WidthHeight & 0xffff;
uint aheight = (MainAtlasLayout.WidthHeight >> 16) & 0xffff;
if((flags & 1) > 0)
color = texture(MainAtlas, vec2((posX+0.5f+uv.x*(width-1))/awidth, (posY+0.5f+(1-uv.y)*(height-1))/aheight));
else
color = texture(MainAtlas, vec2((posX+uv.x*width)/awidth, (posY+(1-uv.y)*height)/aheight));
}
return color;
}
vec3 blendOverlay(vec3 base, vec3 blend) {
vec3 result;
for (int i = 0; i < 3; ++i) {
if (base[i] <= 0.5)
result[i] = 2.0 * base[i] * blend[i];
else
result[i] = 1.0 - 2.0 * (1.0 - base[i]) * (1.0 - blend[i]);
}
return result;
}
void main() {
Frame = atlasColor(Fragment.Texture, Fragment.UV);
Frame.xyz *= max(0.2f, dot(Fragment.Normal, normalize(vec3(0.5, 1, 0.8))));
// Frame = vec4(blendOverlay(vec3(Frame), vec3(Fragment.GeoPos/64.f)), Frame.w);
if(Frame.w == 0)
discard;
}