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109 lines
2.6 KiB
109 lines
2.6 KiB
// Copyright (c) 2017-2020 Xiamen Yaji Software Co., Ltd.
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CCEffect %{
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techniques:
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- passes:
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- vert: sprite-vs:vert
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frag: circle-hole-fs:frag
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depthStencilState:
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depthTest: false
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depthWrite: false
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blendState:
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targets:
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- blend: true
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blendSrc: src_alpha
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blendDst: one_minus_src_alpha
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blendDstAlpha: one_minus_src_alpha
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rasterizerState:
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cullMode: none
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properties:
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alphaThreshold: { value: 0.5 }
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circles: { value: [0.5, 0.5, 0.5, 0.5], editor: { type: array } }
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maskColor: { value: [0.5, 0.5, 0.5, 0.5], editor: { type: color } }
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textureSize: { value: [300, 300] }
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}%
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CCProgram sprite-vs %{
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precision highp float;
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#include <builtin/uniforms/cc-global>
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#if USE_LOCAL
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#include <builtin/uniforms/cc-local>
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#endif
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#if SAMPLE_FROM_RT
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#include <common/common-define>
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#endif
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in vec3 a_position;
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in vec2 a_texCoord;
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in vec4 a_color;
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out vec4 color;
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out vec2 uv0;
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vec4 vert() {
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vec4 pos = vec4(a_position, 1);
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#if USE_LOCAL
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pos = cc_matWorld * pos;
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#endif
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#if USE_PIXEL_ALIGNMENT
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pos = cc_matView * pos;
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pos.xyz = floor(pos.xyz);
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pos = cc_matProj * pos;
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#else
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pos = cc_matViewProj * pos;
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#endif
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uv0 = a_texCoord;
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#if SAMPLE_FROM_RT
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CC_HANDLE_RT_SAMPLE_FLIP(uv0);
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#endif
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color = a_color;
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return pos;
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}
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}%
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CCProgram circle-hole-fs %{
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precision highp float;
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#include <builtin/internal/embedded-alpha>
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#include <builtin/internal/alpha-test>
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in vec4 color;
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in vec2 uv0;
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#pragma builtin(local)
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layout(set = 2, binding = 12)uniform sampler2D cc_spriteTexture;
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uniform ufs {
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vec4 circles[20]; // 存储多个圆的信息，每个元素包含圆心坐标、半径、渐变宽度
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vec4 maskColor;
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vec2 textureSize;
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};
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vec4 frag() {
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vec4 o = maskColor;
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// 遍历每个圆的信息来判断像素是否在孔洞内并应用效果
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for(int i = 0; i < 10; ++ i) { // 同样这里10根据实际设置的最大圆数量来定，可优化成根据circles实际传入的有效数量来循环
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float radius = circles[i].z;
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radius = circles[i].z / max(textureSize.x, textureSize.y);
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float dis = distance(uv0, circles[i].xy);
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if (dis < radius) {
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float gradient = smoothstep(radius - circles[i].w , radius, dis);
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o.a = min(gradient * maskColor.a, o.a); // 取多个圆作用后的最小透明度，可根据需求调整合成方式
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}
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}
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#if USE_TEXTURE
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o *= texture(cc_spriteTexture, uv0);
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#endif
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o *= color;
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ALPHA_TEST(o);
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return o;
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}
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}% |