84 lines
1.3 KiB
Plaintext
84 lines
1.3 KiB
Plaintext
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CCEffect %{
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techniques:
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- passes:
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- vert: vs
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frag: fs
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blendState:
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targets:
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- blend: true
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rasterizerState:
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cullMode: none
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properties:
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texture: { value: white }
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alphaThreshold: { value: 0.5 }
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noiseAmount: { value: 0.5 } // 噪点强度，可在属性面板调整
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}%
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CCProgram vs %{
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precision highp float;
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#include <cc-global>
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#include <cc-local>
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in vec3 a_position;
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in vec4 a_color;
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out vec4 v_color;
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#if USE_TEXTURE
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in vec2 a_uv0;
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out vec2 v_uv0;
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#endif
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void main() {
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vec4 pos = vec4(a_position, 1);
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#if CC_USE_MODEL
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pos = cc_matViewProj * cc_matWorld * pos;
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#else
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pos = cc_matViewProj * pos;
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#endif
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#if USE_TEXTURE
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v_uv0 = a_uv0;
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#endif
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v_color = a_color;
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gl_Position = pos;
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}
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}%
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CCProgram fs %{
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precision highp float;
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#include <alpha-test>
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#include <texture>
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in vec4 v_color;
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#if USE_TEXTURE
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in vec2 v_uv0;
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uniform sampler2D texture;
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#endif
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uniform EffectProperties {
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float noiseAmount;
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};
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float random(vec2 st) {
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return fract(sin(dot(st.xy, vec2(12.9898, 78.233))) * 43758.5453123);
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}
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void main() {
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vec4 col = v_color;
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#if USE_TEXTURE
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col *= texture2D(texture, v_uv0);
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#endif
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float noise = random(v_uv0);
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col.rgb += noise * noiseAmount;
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col.a = noise * 0.2;
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ALPHA_TEST(col);
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gl_FragColor = col;
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}
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}%
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