mirror of
https://github.com/ghostty-org/ghostty.git
synced 2025-07-14 07:46:12 +03:00
clean up the main App
This commit is contained in:
Mitchell Hashimoto
7
shaders/shape.f.glsl
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7
shaders/shape.f.glsl
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@ -0,0 +1,7 @@
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#version 330 core
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out vec4 FragColor;
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void main()
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{
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FragColor = vec4(1.0f, 0.5f, 0.2f, 1.0f);
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}
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7
shaders/shape.v.glsl
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7
shaders/shape.v.glsl
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@ -0,0 +1,7 @@
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#version 330 core
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layout (location = 0) in vec3 aPos;
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void main()
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{
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gl_Position = vec4(aPos.x, aPos.y, aPos.z, 1.0);
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}
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107
src/App.zig
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107
src/App.zig
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//! App is the primary GUI application for ghostty. This builds the window,
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//! sets up the renderer, etc. The primary run loop is started by calling
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//! the "run" function.
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const App = @This();
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const std = @import("std");
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const gl = @import("opengl.zig");
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const glfw = @import("glfw");
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const log = std.log;
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window: glfw.Window,
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glprog: gl.Program,
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vao: gl.VertexArray,
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/// Initialize the main app instance. This creates the main window, sets
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/// up the renderer state, compiles the shaders, etc. This is the primary
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/// "startup" logic.
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pub fn init() !App {
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// Create our window
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const window = try glfw.Window.create(640, 480, "ghostty", null, null, .{
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.context_version_major = 3,
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.context_version_minor = 3,
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.opengl_profile = .opengl_core_profile,
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.opengl_forward_compat = true,
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});
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errdefer window.destroy();
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// Setup OpenGL
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// NOTE(mitchellh): we probably want to extract this to a dedicated
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// renderer at some point.
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try glfw.makeContextCurrent(window);
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try glfw.swapInterval(1);
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window.setSizeCallback((struct {
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fn callback(_: glfw.Window, width: i32, height: i32) void {
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log.info("set viewport {} {}", .{ width, height });
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try gl.viewport(0, 0, width, height);
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}
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}).callback);
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// Compile our shaders
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const vs = try gl.Shader.create(gl.c.GL_VERTEX_SHADER);
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try vs.setSourceAndCompile(vs_source);
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errdefer vs.destroy();
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const fs = try gl.Shader.create(gl.c.GL_FRAGMENT_SHADER);
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try fs.setSourceAndCompile(fs_source);
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errdefer fs.destroy();
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// Link our shader program
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const program = try gl.Program.create();
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errdefer program.destroy();
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try program.attachShader(vs);
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try program.attachShader(fs);
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try program.link();
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vs.destroy();
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fs.destroy();
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// Create our bufer or vertices
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const vertices = [_]f32{
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-0.5, -0.5, 0.0, // left
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0.5, -0.5, 0.0, // right
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0.0, 0.5, 0.0, // top
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};
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const vao = try gl.VertexArray.create();
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//defer vao.destroy();
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const vbo = try gl.Buffer.create();
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//defer vbo.destroy();
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try vao.bind();
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var binding = try vbo.bind(gl.c.GL_ARRAY_BUFFER);
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try binding.setData(&vertices, gl.c.GL_STATIC_DRAW);
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try binding.vertexAttribPointer(0, 3, gl.c.GL_FLOAT, false, 3 * @sizeOf(f32), null);
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try binding.enableVertexAttribArray(0);
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binding.unbind();
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try gl.VertexArray.unbind();
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return App{
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.window = window,
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.glprog = program,
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.vao = vao,
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};
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}
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pub fn deinit(self: *App) void {
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self.window.destroy();
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self.* = undefined;
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}
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pub fn run(self: App) !void {
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while (!self.window.shouldClose()) {
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// Setup basic OpenGL settings
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gl.clearColor(0.2, 0.3, 0.3, 1.0);
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gl.clear(gl.c.GL_COLOR_BUFFER_BIT);
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try self.glprog.use();
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try self.vao.bind();
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try gl.drawArrays(gl.c.GL_TRIANGLES, 0, 3);
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try self.window.swapBuffers();
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try glfw.waitEvents();
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}
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}
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const vs_source = @embedFile("../shaders/shape.v.glsl");
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const fs_source = @embedFile("../shaders/shape.f.glsl");
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157
src/main.zig
157
src/main.zig
@ -4,160 +4,15 @@ const gl = @import("opengl.zig");
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const stb = @import("stb.zig");
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const fonts = @import("fonts.zig");
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const App = @import("App.zig");
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pub fn main() !void {
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// List our fonts
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try fonts.list();
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try glfw.init(.{});
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defer glfw.terminate();
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// Create our window
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const window = try glfw.Window.create(640, 480, "ghostty", null, null, .{
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.context_version_major = 3,
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.context_version_minor = 3,
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.opengl_profile = .opengl_core_profile,
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.opengl_forward_compat = true,
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});
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defer window.destroy();
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// Setup OpenGL
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try glfw.makeContextCurrent(window);
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try glfw.swapInterval(1);
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window.setSizeCallback((struct {
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fn callback(_: glfw.Window, width: i32, height: i32) void {
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std.log.info("set viewport {} {}", .{ width, height });
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try gl.viewport(0, 0, width, height);
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// Run our app
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var app = try App.init();
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defer app.deinit();
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try app.run();
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}
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}).callback);
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// Load our image
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var imgwidth: c_int = 0;
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var imgheight: c_int = 0;
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var imgchannels: c_int = 0;
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const data = stb.c.stbi_load_from_memory(
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texsrc,
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texsrc.len,
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&imgwidth,
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&imgheight,
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&imgchannels,
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0,
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);
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if (data == null) return error.TexFail;
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defer stb.c.stbi_image_free(data);
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// Setup a texture
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const tex = try gl.Texture.create();
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defer tex.destroy();
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var texbind = try tex.bind(gl.c.GL_TEXTURE_2D);
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defer texbind.unbind();
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try texbind.parameter(gl.c.GL_TEXTURE_WRAP_S, gl.c.GL_REPEAT);
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try texbind.parameter(gl.c.GL_TEXTURE_WRAP_T, gl.c.GL_REPEAT);
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try texbind.parameter(gl.c.GL_TEXTURE_MIN_FILTER, gl.c.GL_LINEAR);
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try texbind.parameter(gl.c.GL_TEXTURE_MAG_FILTER, gl.c.GL_LINEAR);
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try texbind.image2D(
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0,
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gl.c.GL_RGB,
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imgwidth,
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imgheight,
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0,
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gl.c.GL_RGB,
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gl.c.GL_UNSIGNED_BYTE,
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data,
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);
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texbind.generateMipmap();
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// Create our vertex shader
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const vs = try gl.Shader.create(gl.c.GL_VERTEX_SHADER);
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try vs.setSourceAndCompile(vs_source);
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defer vs.destroy();
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const fs = try gl.Shader.create(gl.c.GL_FRAGMENT_SHADER);
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try fs.setSourceAndCompile(fs_source);
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defer fs.destroy();
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// Shader program
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const program = try gl.Program.create();
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defer program.destroy();
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try program.attachShader(vs);
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try program.attachShader(fs);
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try program.link();
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vs.destroy();
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fs.destroy();
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// Create our bufer or vertices
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const vertices = [_]f32{
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-0.8, -0.8, 0.0, 0.0, 0.0, // left
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0.8, -0.8, 0.0, 1.0, 0.0, // right
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0.0, 0.8, 0.0, 0.5, 1.0, // top
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};
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const vao = try gl.VertexArray.create();
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defer vao.destroy();
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const vbo = try gl.Buffer.create();
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defer vbo.destroy();
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try vao.bind();
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var binding = try vbo.bind(gl.c.GL_ARRAY_BUFFER);
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try binding.setData(&vertices, gl.c.GL_STATIC_DRAW);
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try binding.vertexAttribPointer(0, 3, gl.c.GL_FLOAT, false, 5 * @sizeOf(f32), null);
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try binding.enableVertexAttribArray(0);
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try binding.vertexAttribPointer(
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1,
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2,
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gl.c.GL_FLOAT,
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false,
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5 * @sizeOf(f32),
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@intToPtr(*const anyopaque, 3 * @sizeOf(f32)),
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);
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try binding.enableVertexAttribArray(1);
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binding.unbind();
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try gl.VertexArray.unbind();
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// Wait for the user to close the window.
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while (!window.shouldClose()) {
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// Setup basic OpenGL settings
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gl.clearColor(0.2, 0.3, 0.3, 1.0);
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gl.clear(gl.c.GL_COLOR_BUFFER_BIT);
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try program.use();
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_ = try tex.bind(gl.c.GL_TEXTURE_2D);
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try vao.bind();
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try gl.drawArrays(gl.c.GL_TRIANGLES, 0, 3);
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// const pos = try window.getCursorPos();
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// std.log.info("CURSOR: {}", .{pos});
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try window.swapBuffers();
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try glfw.waitEvents();
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}
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}
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const texsrc = @embedFile("tex.png");
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const vs_source =
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\\#version 330 core
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\\layout (location = 0) in vec3 aPos;
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\\layout (location = 1) in vec2 aTexCoord;
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\\
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\\out vec2 TexCoord;
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\\
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\\void main()
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\\{
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\\ gl_Position = vec4(aPos.x, aPos.y, aPos.z, 1.0);
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\\ TexCoord = aTexCoord;
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\\}
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;
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const fs_source =
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\\#version 330 core
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\\out vec4 FragColor;
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\\
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\\in vec2 TexCoord;
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\\
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\\uniform sampler2D ourTexture;
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\\
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\\void main()
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\\{
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\\ FragColor = texture(ourTexture, TexCoord);
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\\}
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;
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