diff options
Diffstat (limited to 'src/output.zig')
| -rw-r--r-- | src/output.zig | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/src/output.zig b/src/output.zig index 6f96a61..f0f1118 100644 --- a/src/output.zig +++ b/src/output.zig @@ -55,8 +55,8 @@ pub const Output = struct { fn handle_frame(listener: ?*c.wl_listener, data: ?*c_void) callconv(.C) void { // This function is called every time an output is ready to display a frame, // generally at the output's refresh rate (e.g. 60Hz). - var output = @fieldParentPtr(Output, "listen_frame", listener.?); - var renderer = output.server.wlr_renderer; + const output = @fieldParentPtr(Output, "listen_frame", listener.?); + const renderer = output.server.wlr_renderer; var now: c.struct_timespec = undefined; _ = c.clock_gettime(c.CLOCK_MONOTONIC, &now); @@ -79,7 +79,7 @@ pub const Output = struct { // The first view in the list is "on top" so iterate in reverse. var it = output.server.views.last; while (it) |node| : (it = node.prev) { - var view = &node.data; + const view = &node.data; if (!view.mapped) { // An unmapped view should not be rendered. continue; @@ -112,18 +112,18 @@ pub const Output = struct { fn render_surface(opt_surface: ?*c.wlr_surface, sx: c_int, sy: c_int, data: ?*c_void) callconv(.C) void { // wlroots says this will never be null - var surface = opt_surface.?; + const surface = opt_surface.?; // This function is called for every surface that needs to be rendered. - var rdata = @ptrCast(*RenderData, @alignCast(@alignOf(RenderData), data)); - var view = rdata.view; - var output = rdata.output; + const rdata = @ptrCast(*RenderData, @alignCast(@alignOf(RenderData), data)); + const view = rdata.view; + const output = rdata.output; // We first obtain a wlr_texture, which is a GPU resource. wlroots // automatically handles negotiating these with the client. The underlying // resource could be an opaque handle passed from the client, or the client // could have sent a pixel buffer which we copied to the GPU, or a few other // means. You don't have to worry about this, wlroots takes care of it. - var texture = c.wlr_surface_get_texture(surface); + const texture = c.wlr_surface_get_texture(surface); if (texture == null) { return; } @@ -140,7 +140,7 @@ pub const Output = struct { // We also have to apply the scale factor for HiDPI outputs. This is only // part of the puzzle, TinyWL does not fully support HiDPI. - var box = c.wlr_box{ + const box = c.wlr_box{ .x = @floatToInt(c_int, ox * output.scale), .y = @floatToInt(c_int, oy * output.scale), .width = @floatToInt(c_int, @intToFloat(f32, surface.current.width) * output.scale), @@ -157,7 +157,7 @@ pub const Output = struct { // Naturally you can do this any way you like, for example to make a 3D // compositor. var matrix: [9]f32 = undefined; - var transform = c.wlr_output_transform_invert(surface.current.transform); + const transform = c.wlr_output_transform_invert(surface.current.transform); c.wlr_matrix_project_box(&matrix, &box, transform, 0.0, &output.transform_matrix); // This takes our matrix, the texture, and an alpha, and performs the actual |