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| Original file line number | Diff line number | Diff line change |
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| #version 300 es | ||
| precision highp float; | ||
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| in vec4 v_color; | ||
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| uniform vec4 u_color_mult; | ||
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| out vec4 out_color; | ||
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| void main() { | ||
| out_color = v_color * u_color_mult; | ||
| } |
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,87 @@ | ||
| //+private file | ||
| package example | ||
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| import glm "core:math/linalg/glsl" | ||
| import gl "../wasm/webgl" | ||
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| @private | ||
| State_Sol_System :: struct { | ||
| objects : []Object, | ||
| rotation: [2]f32, | ||
| } | ||
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| Shape :: struct { | ||
| using locations: Input_Locations_Sol_System, | ||
| vao : VAO, | ||
| positions: []vec3, | ||
| normals : []vec3, | ||
| colors : []u8vec4, | ||
| } | ||
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| Object :: struct { | ||
| using uniforms: Uniform_Values_Sol_System, | ||
| shape : Shape, | ||
| rotation : vec3, | ||
| rotation_speed: vec3, | ||
| translation : vec3, | ||
| scale : f32, | ||
| } | ||
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| @private | ||
| setup_sol_system :: proc(s: ^State_Sol_System, program: gl.Program) { | ||
| gl.Enable(gl.CULL_FACE) | ||
| gl.Enable(gl.DEPTH_TEST) | ||
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| /* | ||
| Sphere | ||
| */ | ||
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| sphere_segments :: 6 | ||
| sphere_vertices := get_sphere_vertices(sphere_segments) | ||
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| sphere_shape: Shape = { | ||
| positions = make([]vec3 , sphere_vertices), | ||
| normals = make([]vec3 , sphere_vertices), | ||
| colors = make([]u8vec4, sphere_vertices), | ||
| vao = gl.CreateVertexArray(), | ||
| } | ||
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| get_sphere_base_triangle(sphere_shape.positions, sphere_shape.normals, 1, sphere_segments) | ||
| rand_colors_gray(sphere_shape.colors) | ||
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| gl.BindVertexArray(sphere_shape.vao) | ||
| input_locations_sol_system(&sphere_shape, program) | ||
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| attribute(sphere_shape.a_position, gl.CreateBuffer(), sphere_shape.positions) | ||
| attribute(sphere_shape.a_color , gl.CreateBuffer(), sphere_shape.colors) | ||
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| /* | ||
| Objects | ||
| */ | ||
| s.objects = make([]Object, 60) | ||
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| /* Init rotation */ | ||
| s.rotation = 1 | ||
| } | ||
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| @private | ||
| frame_sol_system :: proc(s: ^State_Sol_System, delta: f32) { | ||
| gl.Viewport(0, 0, canvas_res.x, canvas_res.y) | ||
| gl.ClearColor(0, 0, 0, 0) | ||
| gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT) | ||
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| s.rotation -= 0.01 * delta * mouse_rel.yx | ||
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| view_mat: mat4 = 1 | ||
| view_mat *= glm.mat4PerspectiveInfinite( | ||
| fovy = glm.radians_f32(80), | ||
| aspect = aspect_ratio, | ||
| near = 1, | ||
| ) | ||
| view_mat *= glm.mat4Translate({0, 0, -900 + scale * 720}) | ||
| view_mat *= mat4_rotate_x(s.rotation.x) | ||
| view_mat *= mat4_rotate_y(s.rotation.y) | ||
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| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,19 @@ | ||
| #version 300 es | ||
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| // an attribute is an input (in) to a vertex shader. | ||
| // It will receive data from a buffer | ||
| in vec3 a_position; | ||
| in vec4 a_color; | ||
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| // A matrix to transform the positions by | ||
| uniform mat4 u_matrix; | ||
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| // a varying the color to the fragment shader | ||
| out vec4 v_color; | ||
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| void main() { | ||
| gl_Position = u_matrix * vec4(a_position, 1.0); | ||
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| // Pass the color to the fragment shader. | ||
| v_color = a_color; | ||
| } |