90 lines
2.6 KiB
Plaintext
90 lines
2.6 KiB
Plaintext
MAX_LINES :: 4096;
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line_pipeline: Pipeline_State_Handle;
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Line_Point :: struct {
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position: Vector3;
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width: float;
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}
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Line :: struct {
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points: Static_Array(Line_Point, 1024);
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color: Color;
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}
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lines: [..] Line;
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init_line_rendering :: () {
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line_vertex_buffer = create_vertex_buffer(engine.renderer, null, size_of(Line_Vertex) * MAX_LINES * 6, stride=size_of(Line_Vertex), mappable=true);
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{
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vs := create_vertex_shader(engine.renderer, "../assets/shaders/line.hlsl", "VS", mesh_data_types = .[.POSITION, .COLOR]);
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ps := create_pixel_shader(engine.renderer, "../assets/shaders/line.hlsl", "PS");
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line_pipeline = create_pipeline_state(engine.renderer, vs, ps, blend_type=.TRANSPARENT);
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}
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array_reserve(*lines, 4096);
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}
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begin_line :: (color: Color) {
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current_line = .{};
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current_line.color = color;
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}
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end_line :: () {
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array_add(*lines, current_line);
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}
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add_line_point :: (position: Vector3, width: float) {
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array_add(*current_line.points, .{position, width});
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}
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add_line :: (from: Vector3, to: Vector3, color: Color = .{1,1,1,1}, line_width: float = 0.1) {
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hw := line_width*0.5; // @Incomplete
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up := -engine.current_scene.camera.forward;
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forward := normalize(to - from);
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right := cross(up, forward);
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line_dir := normalize(to - from);
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view_dir := normalize(engine.current_scene.camera.position - (from + to) * 0.5);
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offset_dir := normalize(cross(line_dir, view_dir)) * hw;
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array_add(*line_vertices, .{from + offset_dir, color});
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array_add(*line_vertices, .{to + offset_dir, color});
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array_add(*line_vertices, .{from - offset_dir, color});
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array_add(*line_vertices, .{to + offset_dir, color});
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array_add(*line_vertices, .{to - offset_dir, color});
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array_add(*line_vertices, .{from - offset_dir, color});
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}
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render_lines :: () {
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if line_vertices.count > 0 {
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upload_data_to_buffer(engine.renderer, line_vertex_buffer, line_vertices.data, size_of(Line_Vertex) * line_vertices.count);
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push_cmd_set_draw_mode(engine.renderer, .FILL);
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push_cmd_set_depth_write(engine.renderer, true);
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push_cmd_set_cull_face(engine.renderer, .NONE);
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push_cmd_set_pipeline_state(engine.renderer, line_pipeline);
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push_cmd_set_constant_buffer(engine.renderer, 0, engine.camera_buffer, .VERTEX);
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push_cmd_set_vertex_buffer(engine.renderer, line_vertex_buffer);
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push_cmd_draw(engine.renderer, xx line_vertices.count);
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}
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line_vertices.count = 0;
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}
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#scope_file
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Line_Vertex :: struct {
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position: Vector3;
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color: Color;
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}
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line_vertex_buffer: Buffer_Handle;
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line_vertices: [..] Line_Vertex;
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