Test_Project_Cocos/CocosCreator-Shader-Effect-Demo
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完善内描边

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caizhitao 2019-12-24 17:46:35 +08:00
parent eec09600af
commit 77b3e81519
2 changed files with 23 additions and 13 deletions
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32
assets/effects/glow-inner.effect
View File

@ -32,7 +32,8 @@ CCEffect %{
} }
} }
# 发光透明度阈值 # 发光透明度阈值
#只有超过这个透明度的点才会发光，一般用于解决图像边缘存在渐变透明的时，决定哪些透明度的边缘点发光，具体可以操作一下就知道 # 只有超过这个透明度的点才会发光
# 一般用于解决图像边缘存在渐变透明的时，决定超过这个透明度阈值的边缘点才点发光，具体可以操作一下
glowThreshold: { glowThreshold: {
value: 0.1, value: 0.1,
editor: { editor: {
@ -124,8 +125,10 @@ CCProgram fs %{
* @return average alpha [0.0, 1.0] * @return average alpha [0.0, 1.0]
*/ */
float getAverageAlpha(float dist) { float getAverageAlpha(float dist) {
float totalAlpha = 0.0; float totalAlpha = 0.0;
// 以30度为一个单位，那么「周边」就由0到360度中共计12个点的组成 // 以30度为一个单位，那么「周边一圈」就由0到360度中共计12个点的组成
totalAlpha += getColorAlpha(0.0, dist); totalAlpha += getColorAlpha(0.0, dist);
totalAlpha += getColorAlpha(30.0, dist); totalAlpha += getColorAlpha(30.0, dist);
totalAlpha += getColorAlpha(60.0, dist); totalAlpha += getColorAlpha(60.0, dist);
@ -145,15 +148,17 @@ CCProgram fs %{
* 获取发光的透明度 * 获取发光的透明度
*/ */
float getGlowAlpha() { float getGlowAlpha() {
// 如果发光宽度为0 // 如果发光宽度为0，直接返回0.0透明度，减少计算量
if (glowColorSize == 0.0) { if (glowColorSize == 0.0) {
return 0.0; return 0.0;
} }
// 原来已经接近透明的点不处理 // 因为我们是要做内发光，所以如果点本来是透明的或者接近透明的
// 一般图像边缘会有一些半透明点，这些透明点我们不处理，让它保持原样，否则就是会有内描边效果 // 那么就意味着这个点是图像外的透明点或者图像内透明点（如空洞）之类的
// 内发光的话，这些透明点我们不用处理，让它保持原样，否则就是会有内描边或者一点扩边的效果
// 同时也是提前直接结束，减少计算量
vec4 srcColor = texture(texture, v_uv0); vec4 srcColor = texture(texture, v_uv0);
if (srcColor.a < 0.1) { if (srcColor.a <= glowThreshold) {
return srcColor.a; return srcColor.a;
} }
@ -195,14 +200,19 @@ CCProgram fs %{
// 目标颜色（图像） // 目标颜色（图像）
vec4 color_dest = o; vec4 color_dest = o;
// 获取发光透明度
// 此时我们得到的是内部透明度为1，靠近边缘的为接近0的透明度，其他位置为0的透明度
float alpha = getGlowAlpha(); float alpha = getGlowAlpha();
// 此时我们得到的是内部透明度为1，靠近边缘的为接近0的透明度
// 而内发光恰恰相反，是需要内部透明度为0，靠近边缘的接近1的透明度 // 而内发光是从边缘开始的，那么什么算是边缘呢？
// 因此我们需要翻转一下透明度 // 如果图像边缘有大量渐变，那么如果我们取大于 0.0 点就算是图像内的话，那么可能边缘会出现锯齿
// 如果图像边缘有大量渐变，那么如果我们取 0.0 的话，那么可能边缘会出现锯齿 // 因此为了确定边缘，引入了发光阈值，我们只需要比较一下发光阈值就可以，大于发光阈值的点都是（图像内）发光点
// 因此我们取0.1作为翻转临界值，0.1也不是绝对的，可以自行修改这里的值
if (alpha > glowThreshold) { if (alpha > glowThreshold) {
// 内发光是从边缘发光的，是需要内部透明度为0，靠近边缘的接近1的透明度
// 因此我们需要翻转一下透明度
alpha = 1.0 - alpha; alpha = 1.0 - alpha;
// 给点调料，让靠近边缘的更加亮 // 给点调料，让靠近边缘的更加亮
alpha = -1.0 * (alpha - 1.0) * (alpha - 1.0) * (alpha - 1.0) * (alpha - 1.0) + 1.0; alpha = -1.0 * (alpha - 1.0) * (alpha - 1.0) * (alpha - 1.0) * (alpha - 1.0) + 1.0;
} }

4
assets/effects/glow-inner.effect.meta
View File

@ -5,11 +5,11 @@
{ {
"glsl1": { "glsl1": {
"vert": "\nprecision highp float;\nuniform mat4 cc_matViewProj;\nuniform mat4 cc_matWorld;\n\nattribute vec3 a_position;\nattribute vec4 a_color;\nvarying vec4 v_color;\n\n#if USE_TEXTURE\nattribute vec2 a_uv0;\nvarying vec2 v_uv0;\n#endif\n\nvoid main () {\n vec4 pos = vec4(a_position, 1);\n\n #if CC_USE_MODEL\n pos = cc_matViewProj * cc_matWorld * pos;\n #else\n pos = cc_matViewProj * pos;\n #endif\n\n #if USE_TEXTURE\n v_uv0 = a_uv0;\n #endif\n\n v_color = a_color;\n\n gl_Position = pos;\n}\n", "vert": "\nprecision highp float;\nuniform mat4 cc_matViewProj;\nuniform mat4 cc_matWorld;\n\nattribute vec3 a_position;\nattribute vec4 a_color;\nvarying vec4 v_color;\n\n#if USE_TEXTURE\nattribute vec2 a_uv0;\nvarying vec2 v_uv0;\n#endif\n\nvoid main () {\n vec4 pos = vec4(a_position, 1);\n\n #if CC_USE_MODEL\n pos = cc_matViewProj * cc_matWorld * pos;\n #else\n pos = cc_matViewProj * pos;\n #endif\n\n #if USE_TEXTURE\n v_uv0 = a_uv0;\n #endif\n\n v_color = a_color;\n\n gl_Position = pos;\n}\n",
"frag": "\nprecision highp float;\n\n#if USE_ALPHA_TEST\n \n uniform float alphaThreshold;\n#endif\n\nvoid ALPHA_TEST (in vec4 color) {\n #if USE_ALPHA_TEST\n if (color.a < alphaThreshold) discard;\n #endif\n}\n\nvoid ALPHA_TEST (in float alpha) {\n #if USE_ALPHA_TEST\n if (alpha < alphaThreshold) discard;\n #endif\n}\n\nvarying vec4 v_color;\n\n#if USE_TEXTURE\nvarying vec2 v_uv0;\nuniform sampler2D texture;\n#endif\n\n#if SHOW_INNER_GLOW\n\nuniform vec4 glowColor;\nuniform float glowColorSize;\nuniform float glowThreshold;\n\n/**\n * 获取指定角度方向，距离为xxx的像素的透明度\n *\n * @param angle 角度 [0.0, 360.0]\n * @param dist 距离 [0.0, 1.0]\n *\n * @return alpha [0.0, 1.0]\n */\nfloat getColorAlpha(float angle, float dist) {\n\n float radian = angle * 0.01745329252;\n\n vec4 color = texture2D(texture, v_uv0 + vec2(dist * cos(radian), dist * sin(radian))); \n return color.a;\n}\n\n/**\n * 获取指定距离的周边像素的透明度平均值\n *\n * @param dist 距离 [0.0, 1.0]\n *\n * @return average alpha [0.0, 1.0]\n */\nfloat getAverageAlpha(float dist) {\n float totalAlpha = 0.0;\n\n totalAlpha += getColorAlpha(0.0, dist);\n totalAlpha += getColorAlpha(30.0, dist);\n totalAlpha += getColorAlpha(60.0, dist);\n totalAlpha += getColorAlpha(90.0, dist);\n totalAlpha += getColorAlpha(120.0, dist);\n totalAlpha += getColorAlpha(150.0, dist);\n totalAlpha += getColorAlpha(180.0, dist);\n totalAlpha += getColorAlpha(210.0, dist);\n totalAlpha += getColorAlpha(240.0, dist);\n totalAlpha += getColorAlpha(270.0, dist);\n totalAlpha += getColorAlpha(300.0, dist);\n totalAlpha += getColorAlpha(330.0, dist);\n return totalAlpha * 0.0833;\n\n}\n\n/**\n * 获取发光的透明度\n */\nfloat getGlowAlpha() {\n\n if (glowColorSize == 0.0) {\n return 0.0;\n }\n\n vec4 srcColor = texture2D(texture, v_uv0);\n if (srcColor.a < 0.1) {\n return srcColor.a;\n }\n\n float totalAlpha = 0.0;\n totalAlpha += getAverageAlpha(glowColorSize * 0.1);\n totalAlpha += getAverageAlpha(glowColorSize * 0.2);\n totalAlpha += getAverageAlpha(glowColorSize * 0.3);\n totalAlpha += getAverageAlpha(glowColorSize * 0.4);\n totalAlpha += getAverageAlpha(glowColorSize * 0.5);\n totalAlpha += getAverageAlpha(glowColorSize * 0.6);\n totalAlpha += getAverageAlpha(glowColorSize * 0.7);\n totalAlpha += getAverageAlpha(glowColorSize * 0.8);\n totalAlpha += getAverageAlpha(glowColorSize * 0.9);\n totalAlpha += getAverageAlpha(glowColorSize * 1.0);\n return totalAlpha * 0.1;\n}\n\n#endif\n\nvoid main () {\n vec4 o = vec4(1, 1, 1, 1);\n\n #if USE_TEXTURE\n o *= texture2D(texture, v_uv0);\n #if CC_USE_ALPHA_ATLAS_TEXTURE\n o.a *= texture2D(texture, v_uv0 + vec2(0, 0.5)).r;\n #endif\n #endif\n\n o *= v_color;\n\n ALPHA_TEST(o);\n\n gl_FragColor = o;\n\n #if SHOW_INNER_GLOW\n\n vec4 color_dest = o;\n\n float alpha = getGlowAlpha();\n\n if (alpha > glowThreshold) {\n alpha = 1.0 - alpha;\n\n alpha = -1.0 * (alpha - 1.0) * (alpha - 1.0) * (alpha - 1.0) * (alpha - 1.0) + 1.0;\n }\n\n vec4 color_src = glowColor * alpha;\n\n gl_FragColor = color_src * color_src.a + color_dest;\n #endif\n}\n" "frag": "\nprecision highp float;\n\n#if USE_ALPHA_TEST\n \n uniform float alphaThreshold;\n#endif\n\nvoid ALPHA_TEST (in vec4 color) {\n #if USE_ALPHA_TEST\n if (color.a < alphaThreshold) discard;\n #endif\n}\n\nvoid ALPHA_TEST (in float alpha) {\n #if USE_ALPHA_TEST\n if (alpha < alphaThreshold) discard;\n #endif\n}\n\nvarying vec4 v_color;\n\n#if USE_TEXTURE\nvarying vec2 v_uv0;\nuniform sampler2D texture;\n#endif\n\n#if SHOW_INNER_GLOW\n\nuniform vec4 glowColor;\nuniform float glowColorSize;\nuniform float glowThreshold;\n\n/**\n * 获取指定角度方向，距离为xxx的像素的透明度\n *\n * @param angle 角度 [0.0, 360.0]\n * @param dist 距离 [0.0, 1.0]\n *\n * @return alpha [0.0, 1.0]\n */\nfloat getColorAlpha(float angle, float dist) {\n\n float radian = angle * 0.01745329252;\n\n vec4 color = texture2D(texture, v_uv0 + vec2(dist * cos(radian), dist * sin(radian))); \n return color.a;\n}\n\n/**\n * 获取指定距离的周边像素的透明度平均值\n *\n * @param dist 距离 [0.0, 1.0]\n *\n * @return average alpha [0.0, 1.0]\n */\nfloat getAverageAlpha(float dist) {\n\n float totalAlpha = 0.0;\n\n totalAlpha += getColorAlpha(0.0, dist);\n totalAlpha += getColorAlpha(30.0, dist);\n totalAlpha += getColorAlpha(60.0, dist);\n totalAlpha += getColorAlpha(90.0, dist);\n totalAlpha += getColorAlpha(120.0, dist);\n totalAlpha += getColorAlpha(150.0, dist);\n totalAlpha += getColorAlpha(180.0, dist);\n totalAlpha += getColorAlpha(210.0, dist);\n totalAlpha += getColorAlpha(240.0, dist);\n totalAlpha += getColorAlpha(270.0, dist);\n totalAlpha += getColorAlpha(300.0, dist);\n totalAlpha += getColorAlpha(330.0, dist);\n return totalAlpha * 0.0833;\n\n}\n\n/**\n * 获取发光的透明度\n */\nfloat getGlowAlpha() {\n\n if (glowColorSize == 0.0) {\n return 0.0;\n }\n\n vec4 srcColor = texture2D(texture, v_uv0);\n if (srcColor.a <= glowThreshold) {\n return srcColor.a;\n }\n\n float totalAlpha = 0.0;\n totalAlpha += getAverageAlpha(glowColorSize * 0.1);\n totalAlpha += getAverageAlpha(glowColorSize * 0.2);\n totalAlpha += getAverageAlpha(glowColorSize * 0.3);\n totalAlpha += getAverageAlpha(glowColorSize * 0.4);\n totalAlpha += getAverageAlpha(glowColorSize * 0.5);\n totalAlpha += getAverageAlpha(glowColorSize * 0.6);\n totalAlpha += getAverageAlpha(glowColorSize * 0.7);\n totalAlpha += getAverageAlpha(glowColorSize * 0.8);\n totalAlpha += getAverageAlpha(glowColorSize * 0.9);\n totalAlpha += getAverageAlpha(glowColorSize * 1.0);\n return totalAlpha * 0.1;\n}\n\n#endif\n\nvoid main () {\n vec4 o = vec4(1, 1, 1, 1);\n\n #if USE_TEXTURE\n o *= texture2D(texture, v_uv0);\n #if CC_USE_ALPHA_ATLAS_TEXTURE\n o.a *= texture2D(texture, v_uv0 + vec2(0, 0.5)).r;\n #endif\n #endif\n\n o *= v_color;\n\n ALPHA_TEST(o);\n\n gl_FragColor = o;\n\n #if SHOW_INNER_GLOW\n\n vec4 color_dest = o;\n\n float alpha = getGlowAlpha();\n\n if (alpha > glowThreshold) {\n\n alpha = 1.0 - alpha;\n\n alpha = -1.0 * (alpha - 1.0) * (alpha - 1.0) * (alpha - 1.0) * (alpha - 1.0) + 1.0;\n }\n\n vec4 color_src = glowColor * alpha;\n\n gl_FragColor = color_src * color_src.a + color_dest;\n #endif\n}\n"
}, },
"glsl3": { "glsl3": {
"vert": "\nprecision highp float;\nuniform CCGlobal {\n vec4 cc_time;\n\n vec4 cc_screenSize;\n\n vec4 cc_screenScale;\n\n vec4 cc_nativeSize;\n\n mat4 cc_matView;\n mat4 cc_matViewInv;\n mat4 cc_matProj;\n mat4 cc_matProjInv;\n mat4 cc_matViewProj;\n mat4 cc_matViewProjInv;\n vec4 cc_cameraPos;\n\n vec4 cc_exposure;\n\n vec4 cc_mainLitDir;\n\n vec4 cc_mainLitColor;\n\n vec4 cc_ambientSky;\n vec4 cc_ambientGround;\n};\nuniform CCLocal {\n mat4 cc_matWorld;\n mat4 cc_matWorldIT;\n};\n\nin vec3 a_position;\nin vec4 a_color;\nout vec4 v_color;\n\n#if USE_TEXTURE\nin vec2 a_uv0;\nout vec2 v_uv0;\n#endif\n\nvoid main () {\n vec4 pos = vec4(a_position, 1);\n\n #if CC_USE_MODEL\n pos = cc_matViewProj * cc_matWorld * pos;\n #else\n pos = cc_matViewProj * pos;\n #endif\n\n #if USE_TEXTURE\n v_uv0 = a_uv0;\n #endif\n\n v_color = a_color;\n\n gl_Position = pos;\n}\n", "vert": "\nprecision highp float;\nuniform CCGlobal {\n vec4 cc_time;\n\n vec4 cc_screenSize;\n\n vec4 cc_screenScale;\n\n vec4 cc_nativeSize;\n\n mat4 cc_matView;\n mat4 cc_matViewInv;\n mat4 cc_matProj;\n mat4 cc_matProjInv;\n mat4 cc_matViewProj;\n mat4 cc_matViewProjInv;\n vec4 cc_cameraPos;\n\n vec4 cc_exposure;\n\n vec4 cc_mainLitDir;\n\n vec4 cc_mainLitColor;\n\n vec4 cc_ambientSky;\n vec4 cc_ambientGround;\n};\nuniform CCLocal {\n mat4 cc_matWorld;\n mat4 cc_matWorldIT;\n};\n\nin vec3 a_position;\nin vec4 a_color;\nout vec4 v_color;\n\n#if USE_TEXTURE\nin vec2 a_uv0;\nout vec2 v_uv0;\n#endif\n\nvoid main () {\n vec4 pos = vec4(a_position, 1);\n\n #if CC_USE_MODEL\n pos = cc_matViewProj * cc_matWorld * pos;\n #else\n pos = cc_matViewProj * pos;\n #endif\n\n #if USE_TEXTURE\n v_uv0 = a_uv0;\n #endif\n\n v_color = a_color;\n\n gl_Position = pos;\n}\n",
"frag": "\nprecision highp float;\n\n#if USE_ALPHA_TEST\n \n uniform ALPHA_TEST {\n float alphaThreshold;\n }\n#endif\n\nvoid ALPHA_TEST (in vec4 color) {\n #if USE_ALPHA_TEST\n if (color.a < alphaThreshold) discard;\n #endif\n}\n\nvoid ALPHA_TEST (in float alpha) {\n #if USE_ALPHA_TEST\n if (alpha < alphaThreshold) discard;\n #endif\n}\n\nin vec4 v_color;\n\n#if USE_TEXTURE\nin vec2 v_uv0;\nuniform sampler2D texture;\n#endif\n\n#if SHOW_INNER_GLOW\n\nuniform glow {\n\n vec4 glowColor;\n\n float glowColorSize;\n\n float glowThreshold;\n\n};\n\n/**\n * 获取指定角度方向，距离为xxx的像素的透明度\n *\n * @param angle 角度 [0.0, 360.0]\n * @param dist 距离 [0.0, 1.0]\n *\n * @return alpha [0.0, 1.0]\n */\nfloat getColorAlpha(float angle, float dist) {\n\n float radian = angle * 0.01745329252;\n\n vec4 color = texture(texture, v_uv0 + vec2(dist * cos(radian), dist * sin(radian))); \n return color.a;\n}\n\n/**\n * 获取指定距离的周边像素的透明度平均值\n *\n * @param dist 距离 [0.0, 1.0]\n *\n * @return average alpha [0.0, 1.0]\n */\nfloat getAverageAlpha(float dist) {\n float totalAlpha = 0.0;\n\n totalAlpha += getColorAlpha(0.0, dist);\n totalAlpha += getColorAlpha(30.0, dist);\n totalAlpha += getColorAlpha(60.0, dist);\n totalAlpha += getColorAlpha(90.0, dist);\n totalAlpha += getColorAlpha(120.0, dist);\n totalAlpha += getColorAlpha(150.0, dist);\n totalAlpha += getColorAlpha(180.0, dist);\n totalAlpha += getColorAlpha(210.0, dist);\n totalAlpha += getColorAlpha(240.0, dist);\n totalAlpha += getColorAlpha(270.0, dist);\n totalAlpha += getColorAlpha(300.0, dist);\n totalAlpha += getColorAlpha(330.0, dist);\n return totalAlpha * 0.0833;\n\n}\n\n/**\n * 获取发光的透明度\n */\nfloat getGlowAlpha() {\n\n if (glowColorSize == 0.0) {\n return 0.0;\n }\n\n vec4 srcColor = texture(texture, v_uv0);\n if (srcColor.a < 0.1) {\n return srcColor.a;\n }\n\n float totalAlpha = 0.0;\n totalAlpha += getAverageAlpha(glowColorSize * 0.1);\n totalAlpha += getAverageAlpha(glowColorSize * 0.2);\n totalAlpha += getAverageAlpha(glowColorSize * 0.3);\n totalAlpha += getAverageAlpha(glowColorSize * 0.4);\n totalAlpha += getAverageAlpha(glowColorSize * 0.5);\n totalAlpha += getAverageAlpha(glowColorSize * 0.6);\n totalAlpha += getAverageAlpha(glowColorSize * 0.7);\n totalAlpha += getAverageAlpha(glowColorSize * 0.8);\n totalAlpha += getAverageAlpha(glowColorSize * 0.9);\n totalAlpha += getAverageAlpha(glowColorSize * 1.0);\n return totalAlpha * 0.1;\n}\n\n#endif\n\nvoid main () {\n vec4 o = vec4(1, 1, 1, 1);\n\n #if USE_TEXTURE\n o *= texture(texture, v_uv0);\n #if CC_USE_ALPHA_ATLAS_TEXTURE\n o.a *= texture2D(texture, v_uv0 + vec2(0, 0.5)).r;\n #endif\n #endif\n\n o *= v_color;\n\n ALPHA_TEST(o);\n\n gl_FragColor = o;\n\n #if SHOW_INNER_GLOW\n\n vec4 color_dest = o;\n\n float alpha = getGlowAlpha();\n\n if (alpha > glowThreshold) {\n alpha = 1.0 - alpha;\n\n alpha = -1.0 * (alpha - 1.0) * (alpha - 1.0) * (alpha - 1.0) * (alpha - 1.0) + 1.0;\n }\n\n vec4 color_src = glowColor * alpha;\n\n gl_FragColor = color_src * color_src.a + color_dest;\n #endif\n}\n" "frag": "\nprecision highp float;\n\n#if USE_ALPHA_TEST\n \n uniform ALPHA_TEST {\n float alphaThreshold;\n }\n#endif\n\nvoid ALPHA_TEST (in vec4 color) {\n #if USE_ALPHA_TEST\n if (color.a < alphaThreshold) discard;\n #endif\n}\n\nvoid ALPHA_TEST (in float alpha) {\n #if USE_ALPHA_TEST\n if (alpha < alphaThreshold) discard;\n #endif\n}\n\nin vec4 v_color;\n\n#if USE_TEXTURE\nin vec2 v_uv0;\nuniform sampler2D texture;\n#endif\n\n#if SHOW_INNER_GLOW\n\nuniform glow {\n\n vec4 glowColor;\n\n float glowColorSize;\n\n float glowThreshold;\n\n};\n\n/**\n * 获取指定角度方向，距离为xxx的像素的透明度\n *\n * @param angle 角度 [0.0, 360.0]\n * @param dist 距离 [0.0, 1.0]\n *\n * @return alpha [0.0, 1.0]\n */\nfloat getColorAlpha(float angle, float dist) {\n\n float radian = angle * 0.01745329252;\n\n vec4 color = texture(texture, v_uv0 + vec2(dist * cos(radian), dist * sin(radian))); \n return color.a;\n}\n\n/**\n * 获取指定距离的周边像素的透明度平均值\n *\n * @param dist 距离 [0.0, 1.0]\n *\n * @return average alpha [0.0, 1.0]\n */\nfloat getAverageAlpha(float dist) {\n\n float totalAlpha = 0.0;\n\n totalAlpha += getColorAlpha(0.0, dist);\n totalAlpha += getColorAlpha(30.0, dist);\n totalAlpha += getColorAlpha(60.0, dist);\n totalAlpha += getColorAlpha(90.0, dist);\n totalAlpha += getColorAlpha(120.0, dist);\n totalAlpha += getColorAlpha(150.0, dist);\n totalAlpha += getColorAlpha(180.0, dist);\n totalAlpha += getColorAlpha(210.0, dist);\n totalAlpha += getColorAlpha(240.0, dist);\n totalAlpha += getColorAlpha(270.0, dist);\n totalAlpha += getColorAlpha(300.0, dist);\n totalAlpha += getColorAlpha(330.0, dist);\n return totalAlpha * 0.0833;\n\n}\n\n/**\n * 获取发光的透明度\n */\nfloat getGlowAlpha() {\n\n if (glowColorSize == 0.0) {\n return 0.0;\n }\n\n vec4 srcColor = texture(texture, v_uv0);\n if (srcColor.a <= glowThreshold) {\n return srcColor.a;\n }\n\n float totalAlpha = 0.0;\n totalAlpha += getAverageAlpha(glowColorSize * 0.1);\n totalAlpha += getAverageAlpha(glowColorSize * 0.2);\n totalAlpha += getAverageAlpha(glowColorSize * 0.3);\n totalAlpha += getAverageAlpha(glowColorSize * 0.4);\n totalAlpha += getAverageAlpha(glowColorSize * 0.5);\n totalAlpha += getAverageAlpha(glowColorSize * 0.6);\n totalAlpha += getAverageAlpha(glowColorSize * 0.7);\n totalAlpha += getAverageAlpha(glowColorSize * 0.8);\n totalAlpha += getAverageAlpha(glowColorSize * 0.9);\n totalAlpha += getAverageAlpha(glowColorSize * 1.0);\n return totalAlpha * 0.1;\n}\n\n#endif\n\nvoid main () {\n vec4 o = vec4(1, 1, 1, 1);\n\n #if USE_TEXTURE\n o *= texture(texture, v_uv0);\n #if CC_USE_ALPHA_ATLAS_TEXTURE\n o.a *= texture2D(texture, v_uv0 + vec2(0, 0.5)).r;\n #endif\n #endif\n\n o *= v_color;\n\n ALPHA_TEST(o);\n\n gl_FragColor = o;\n\n #if SHOW_INNER_GLOW\n\n vec4 color_dest = o;\n\n float alpha = getGlowAlpha();\n\n if (alpha > glowThreshold) {\n\n alpha = 1.0 - alpha;\n\n alpha = -1.0 * (alpha - 1.0) * (alpha - 1.0) * (alpha - 1.0) * (alpha - 1.0) + 1.0;\n }\n\n vec4 color_src = glowColor * alpha;\n\n gl_FragColor = color_src * color_src.a + color_dest;\n #endif\n}\n"
} }
} }
], ],