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Fully implemented lighting

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Two types of light sources are currently supported: directional lights
and point lights. A scene can have only one directional light and up to
1024 point lights.
This commit is contained in:
Lorenzo Torres 2025-08-08 03:18:08 +02:00
parent 214317e0bf
commit 503ed33aec
7 changed files with 181 additions and 48 deletions
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29
src/rendering/Renderer.zig
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@ -19,6 +19,7 @@ graphics_pipeline: vk.GraphicsPipeline,
current_frame: u32,
mesh: Mesh,
transform: math.Transform,
transform2: math.Transform,
previous_time: std.time.Instant,
pub fn init(allocator: Allocator, instance_handle: vk.c.VkInstance, surface_handle: vk.c.VkSurfaceKHR) !Renderer {
@ -52,9 +53,26 @@ pub fn init(allocator: Allocator, instance_handle: vk.c.VkInstance, surface_hand
_ = try graphics_pipeline.addTexture(device, texture, diffuse);
graphics_pipeline.light_pos[0] = -10.0;
graphics_pipeline.light_pos[1] = 0.0;
graphics_pipeline.light_pos[2] = 0.0;
graphics_pipeline.directional_light.direction = .{-0.2, -1.0, -0.3};
graphics_pipeline.directional_light.ambient = .{0.5, 0.5, 0.5};
graphics_pipeline.directional_light.diffuse = .{0.5, 0.5, 0.5};
graphics_pipeline.directional_light.specular = .{0.5, 0.5, 0.5};
graphics_pipeline.point_lights[0].position = .{0.0, 3.0, 3.0};
graphics_pipeline.point_lights[0].data[0] = 1.0;
graphics_pipeline.point_lights[0].data[1] = 0.0014;
graphics_pipeline.point_lights[0].data[2] = 0.000007;
graphics_pipeline.point_lights[0].ambient = .{0.5, 0.5, 0.5};
graphics_pipeline.point_lights[0].diffuse = .{0.5, 0.5, 0.5};
graphics_pipeline.point_lights[0].specular = .{1.0, 1.0, 1.0};
graphics_pipeline.point_lights[1].position = .{-1.0, 0.0, 0.0};
graphics_pipeline.point_lights[1].data[0] = 1.0;
graphics_pipeline.point_lights[1].data[1] = 0.09;
graphics_pipeline.point_lights[1].data[2] = 0.032;
graphics_pipeline.point_lights[1].ambient = .{0.5, 0.5, 0.5};
graphics_pipeline.point_lights[1].diffuse = .{0.5, 0.5, 0.5};
graphics_pipeline.point_lights[1].specular = .{1.0, 1.0, 1.0};
return Renderer{
.instance = instance,
@ -66,6 +84,7 @@ pub fn init(allocator: Allocator, instance_handle: vk.c.VkInstance, surface_hand
.graphics_pipeline = graphics_pipeline,
.current_frame = 0,
.transform = math.Transform.init(.{0.0, 0.0, 0.0}, .{1.0, 1.0, 1.0}, .{0.0, 0.0, 0.0}),
.transform2 = math.Transform.init(.{0.0, 3.0, 3.0}, .{0.5, 0.5, 0.5}, .{0.0, 0.0, 0.0}),
.previous_time = try std.time.Instant.now(),
.mesh = mesh,
};
@ -97,7 +116,7 @@ pub fn render(pool: *ecs.Pool) anyerror!void {
view_pos[1] = camera.position[1];
view_pos[2] = camera.position[2];
renderer.transform.rotate(math.rad(10) * delta_time, .{0.0, 1.0, 0.0});
renderer.transform.rotate(math.rad(15) * delta_time, .{0.0, 1.0, 0.0});
const transform_memory = renderer.graphics_pipeline.transform_memory;
@memcpy(transform_memory[0..(@sizeOf(math.Transform)-@sizeOf(math.Quaternion))], std.mem.asBytes(&renderer.transform)[0..(@sizeOf(math.Transform)-@sizeOf(math.Quaternion))]);
@ -111,6 +130,8 @@ pub fn render(pool: *ecs.Pool) anyerror!void {
renderer.device.bindVertexBuffer(renderer.graphics_pipeline.vertex_buffer, renderer.current_frame);
renderer.device.bindIndexBuffer(renderer.graphics_pipeline.index_buffer, renderer.current_frame);
renderer.device.bindDescriptorSets(renderer.graphics_pipeline, renderer.current_frame, 0);
var lights: u32 = 2;
renderer.device.pushConstant(renderer.graphics_pipeline, 0, 0, 4, @ptrCast(&lights), renderer.current_frame);
renderer.device.draw(renderer.mesh.index_count, renderer.current_frame, renderer.mesh);
renderer.render_pass.end(renderer.device, renderer.current_frame);
try renderer.device.endCommand(renderer.current_frame);