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britzlbritzl
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Added uvgradient and noise examples
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12 files changed

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12 files changed

+280
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lines changed

‎examples/_main/loader.go

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@@ -412,3 +412,15 @@ embedded_components {
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data: "collection: \"/examples/gui/get_set_texture/get_set_texture.collection\"\n"
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""
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}
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embedded_components {
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id: "material/uvgradient"
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type: "collectionproxy"
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data: "collection: \"/examples/material/uvgradient/uvgradient.collection\"\n"
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""
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}
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embedded_components {
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id: "material/noise"
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type: "collectionproxy"
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data: "collection: \"/examples/material/noise/noise.collection\"\n"
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""
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}

‎examples/_main/menu.gui_script

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@@ -112,7 +112,7 @@ function init(self)
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"get_set_font", "get_set_texture", "get_set_material",
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}
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self.index["input"] = { "move", "text", "down_duration", "mouse_and_touch" }
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self.index["material"] = { "vertexcolor" }
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self.index["material"] = { "vertexcolor", "uvgradient", "noise" }
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self.index["particles"] = { "particlefx", "modifiers", "fire_and_smoke" }
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self.index["sound"] = { "music", "fade_in_out", "panning" }
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self.index["render"] = { "camera", "screen_to_world" }

‎examples/material/noise/noise.collection

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name: "noise"
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scale_along_z: 0
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embedded_instances {
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id: "go"
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data: "components {\n"
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" id: \"drawtoquad\"\n"
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" component: \"/examples/material/noise/noise.script\"\n"
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"}\n"
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"embedded_components {\n"
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" id: \"model\"\n"
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" type: \"model\"\n"
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" data: \"mesh: \\\"/builtins/assets/meshes/quad.dae\\\"\\n"
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"name: \\\"{{NAME}}\\\"\\n"
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"materials {\\n"
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" name: \\\"default\\\"\\n"
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" material: \\\"/examples/material/noise/noise.material\\\"\\n"
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"}\\n"
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"\"\n"
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"}\n"
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""
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position {
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x: 360.0
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y: 360.0
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}
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scale3 {
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x: 720.0
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y: 720.0
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z: 50.0
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}
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}

‎examples/material/noise/noise.fp

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varying mediump vec2 var_texcoord0;
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uniform lowp vec4 time;
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// noise shader from https://www.shadertoy.com/view/XXBcDz
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// pseudo random generator (white noise)
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float rand(vec2 n)
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{
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return fract(sin(dot(n, vec2(12.9898, 78.233))) * 43758.5453);
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}
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// value noise
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float noise(vec2 p)
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{
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vec2 ip = floor(p);
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vec2 u = fract(p);
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u = u * u * (3.0 - 2.0 * u);
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float x = mix(rand(ip), rand(ip + vec2(1.0, 0.0)), u.x);
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float y = mix(rand(ip + vec2(0.0, 1.0)), rand(ip + vec2(1.0, 1.0)), u.x);
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float a = u.y;
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float res = mix(x, y, a);
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return res * res;
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}
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// used to rotate domain of noise function
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const mat2 rot = mat2( 0.80, 0.60, -0.60, 0.80 );
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// fast implementation
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float fbm( vec2 p )
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{
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float f = 0.0;
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f += 0.500000 * noise( p ); p = rot * p * 2.02;
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f += 0.031250 * noise( p ); p = rot * p * 2.01;
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f += 0.250000 * noise( p ); p = rot * p * 2.03;
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f += 0.125000 * noise( p + 0.1 * sin(time.x) + 0.8 * time.x ); p = rot * p * 2.01;
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f += 0.062500 * noise( p + 0.3 * sin(time.x) ); p = rot * p * 2.04;
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f += 0.015625 * noise( p );
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return f / 0.96875;
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}
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void main()
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{
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float n = fbm(var_texcoord0.xy);
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gl_FragColor = vec4(n, n, n, 1.0);
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}
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‎examples/material/noise/noise.material

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name: "noise"
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tags: "model"
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vertex_program: "/examples/material/noise/noise.vp"
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fragment_program: "/examples/material/noise/noise.fp"
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vertex_space: VERTEX_SPACE_LOCAL
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vertex_constants {
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name: "mtx_worldview"
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type: CONSTANT_TYPE_WORLDVIEW
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}
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vertex_constants {
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name: "mtx_view"
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type: CONSTANT_TYPE_VIEW
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}
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vertex_constants {
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name: "mtx_proj"
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type: CONSTANT_TYPE_PROJECTION
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}
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vertex_constants {
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name: "mtx_normal"
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type: CONSTANT_TYPE_NORMAL
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}
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fragment_constants {
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name: "time"
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type: CONSTANT_TYPE_USER
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value {
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x: 1.0
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y: 1.0
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z: 1.0
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w: 1.0
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}
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}

‎examples/material/noise/noise.script

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function init(self)
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self.time = 0
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end
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function update(self, dt)
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self.time = self.time + dt
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go.set("#model", "time.x", self.time)
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end

‎examples/material/noise/noise.vp

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// Positions can be world or local space, since world and normal
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// matrices are identity for world vertex space materials.
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// If world vertex space is selected, you can remove the
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// normal matrix multiplication for optimal performance.
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attribute highp vec4 position;
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attribute mediump vec2 texcoord0;
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attribute mediump vec3 normal;
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uniform mediump mat4 mtx_worldview;
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uniform mediump mat4 mtx_view;
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uniform mediump mat4 mtx_proj;
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uniform mediump mat4 mtx_normal;
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varying highp vec4 var_position;
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varying mediump vec3 var_normal;
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varying mediump vec2 var_texcoord0;
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void main()
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{
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vec4 p = mtx_worldview * vec4(position.xyz, 1.0);
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var_texcoord0 = texcoord0;
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gl_Position = mtx_proj * p;
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}
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‎examples/material/noise/noise_copy.fp

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varying mediump vec2 var_texcoord0;
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uniform lowp vec4 time;
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// noise shader from https://www.shadertoy.com/view/XXBcDz
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// pseudo random generator (white noise)
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float rand(vec2 n)
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{
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return fract(sin(dot(n, vec2(12.9898, 4.1414))) * 43758.5453);
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}
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// value noise
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float noise(vec2 p)
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{
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vec2 ip = floor(p);
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vec2 u = fract(p);
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u = u * u * (3.0 - 2.0 * u);
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float x = mix(rand(ip), rand(ip + vec2(1.0,0.0)), u.x);
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float y = mix(rand(ip + vec2(0.0, 1.0)), rand(ip + vec2(1.0, 1.0)), u.x);
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float a = u.y;
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float res = mix(x, y, a);
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return res * res;
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}
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// used to rotate domain of noise function
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const mat2 rot = mat2( 0.80, 0.60, -0.60, 0.80 );
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// fast implementation
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float fbm( vec2 p )
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{
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float f = 0.0;
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f += 0.500000*noise( p ); p = rot*p*2.02;
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f += 0.031250*noise( p ); p = rot*p*2.01;
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f += 0.250000*noise( p ); p = rot*p*2.03;
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f += 0.125000*noise( p + 0.1 * sin(time.x) + 0.8 * time.x ); p = rot*p*2.01;
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f += 0.062500*noise( p + 0.3 * sin(time.x) ); p = rot*p*2.04;
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f += 0.015625*noise( p );
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return f / 0.96875;
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}
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void main()
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{
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float n = fbm(var_texcoord0.xy);
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gl_FragColor = vec4(n, n, n, 1.0);
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}
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‎examples/material/uvgradient/uvgradient.collection

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name: "uvgradient"
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scale_along_z: 0
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embedded_instances {
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id: "go"
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data: "embedded_components {\n"
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" id: \"model\"\n"
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" type: \"model\"\n"
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" data: \"mesh: \\\"/builtins/assets/meshes/quad.dae\\\"\\n"
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"name: \\\"{{NAME}}\\\"\\n"
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"materials {\\n"
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" name: \\\"default\\\"\\n"
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" material: \\\"/examples/material/uvgradient/uvgradient.material\\\"\\n"
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"}\\n"
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"\"\n"
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"}\n"
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""
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position {
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x: 360.0
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y: 360.0
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}
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scale3 {
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x: 720.0
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y: 720.0
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z: 50.0
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}
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}

‎examples/material/uvgradient/uvgradient.fp

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varying mediump vec2 var_texcoord0;
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void main()
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{
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gl_FragColor = vec4(var_texcoord0.x, var_texcoord0.y, 0.5, 1.0f);
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}
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‎examples/material/uvgradient/uvgradient.material

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name: "uvgradient"
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tags: "model"
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vertex_program: "/examples/material/uvgradient/uvgradient.vp"
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fragment_program: "/examples/material/uvgradient/uvgradient.fp"
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vertex_space: VERTEX_SPACE_LOCAL
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vertex_constants {
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name: "mtx_worldview"
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type: CONSTANT_TYPE_WORLDVIEW
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}
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vertex_constants {
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name: "mtx_view"
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type: CONSTANT_TYPE_VIEW
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}
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vertex_constants {
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name: "mtx_proj"
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type: CONSTANT_TYPE_PROJECTION
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}
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vertex_constants {
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name: "mtx_normal"
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type: CONSTANT_TYPE_NORMAL
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}

‎examples/material/uvgradient/uvgradient.vp

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// Positions can be world or local space, since world and normal
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// matrices are identity for world vertex space materials.
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// If world vertex space is selected, you can remove the
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// normal matrix multiplication for optimal performance.
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attribute highp vec4 position;
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attribute mediump vec2 texcoord0;
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attribute mediump vec3 normal;
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uniform mediump mat4 mtx_worldview;
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uniform mediump mat4 mtx_view;
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uniform mediump mat4 mtx_proj;
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uniform mediump mat4 mtx_normal;
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varying mediump vec2 var_texcoord0;
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void main()
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{
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vec4 p = mtx_worldview * vec4(position.xyz, 1.0);
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var_texcoord0 = texcoord0;
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gl_Position = mtx_proj * p;
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}
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