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Add basic lighting for item drops.

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fixes #623
This commit is contained in:
IntegratedQuantum 2025-03-03 19:39:08 +01:00
parent c4a4d29a07
commit ae4b60349e
3 changed files with 20 additions and 4 deletions
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2
assets/cubyz/shaders/item_drop.fs
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@ -81,7 +81,7 @@ void mainBlockDrop() {
reflectivity = reflectivity*fixedCubeMapLookup(reflect(direction, faceNormal)).x;
reflectivity = reflectivity*(1 - fresnelReflection) + fresnelReflection;
vec3 pixelLight = max(vec3(normalVariation), texture(emissionSampler, textureCoords).r*4); // TODO: light*normalVariation
vec3 pixelLight = ambientLight*max(vec3(normalVariation), texture(emissionSampler, textureCoords).r*4);
fragColor = texture(texture_sampler, textureCoords)*vec4(pixelLight, 1);
fragColor.rgb += reflectivity*pixelLight;

7
src/itemdrop.zig
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@ -681,10 +681,11 @@ pub const ItemDropRenderer = struct { // MARK: ItemDropRenderer
if(itemDrops.list.items(.itemStack)[i].item) |item| {
var pos = itemDrops.list.items(.pos)[i];
const rot = itemDrops.list.items(.rot)[i];
const light: u32 = 0xffffffff; // TODO: Get this light value from the mesh_storage.
const blockPos: Vec3i = @intFromFloat(@floor(pos));
const light: [6]u8 = main.renderer.mesh_storage.getLight(blockPos[0], blockPos[1], blockPos[2]) orelse .{0} ** 6;
c.glUniform3fv(itemUniforms.ambientLight, 1, @ptrCast(&@max(
ambientLight*@as(Vec3f, @splat(@as(f32, @floatFromInt(light >> 24))/255)),
Vec3f{light >> 16 & 255, light >> 8 & 255, light & 255}/@as(Vec3f, @splat(255)),
ambientLight*@as(Vec3f, @as(Vec3f, @floatFromInt(Vec3i{light[0], light[1], light[2]}))/@as(Vec3f, @splat(255))),
@as(Vec3f, @floatFromInt(Vec3i{light[3], light[4], light[5]}))/@as(Vec3f, @splat(255)),
)));
pos -= playerPos;

15
src/renderer/mesh_storage.zig
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@ -175,6 +175,21 @@ pub fn getBlock(x: i32, y: i32, z: i32) ?blocks.Block {
return block;
}
pub fn getLight(wx: i32, wy: i32, wz: i32) ?[6]u8 {
const node = getNodePointer(.{.wx = wx, .wy = wy, .wz = wz, .voxelSize = 1});
node.mutex.lock();
defer node.mutex.unlock();
const mesh = node.mesh orelse return null;
const x = (wx >> mesh.chunk.voxelSizeShift) & chunk.chunkMask;
const y = (wy >> mesh.chunk.voxelSizeShift) & chunk.chunkMask;
const z = (wz >> mesh.chunk.voxelSizeShift) & chunk.chunkMask;
mesh.lightingData[0].lock.lockRead();
defer mesh.lightingData[0].lock.unlockRead();
mesh.lightingData[1].lock.lockRead();
defer mesh.lightingData[1].lock.unlockRead();
return mesh.lightingData[1].getValue(x, y, z) ++ mesh.lightingData[0].getValue(x, y, z);
}
pub fn getBlockFromAnyLod(x: i32, y: i32, z: i32) blocks.Block {
var lod: u5 = 0;
while(lod < settings.highestLod) : (lod += 1) {