Test_Project_Cocos/CocosCreator-Shader-Effect-Demo
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

初步完善外发光

Browse Source
This commit is contained in:
caizhitao 2019-12-25 10:20:03 +08:00
parent a5cfb84dd0
commit ec75ce4939
4 changed files with 49 additions and 51 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

70
assets/effects/sprite-glow-outter.effect
View File

@ -1,6 +1,6 @@
// Copyright (c) 2017-2018 Xiamen Yaji Software Co., Ltd. // Copyright (c) 2017-2018 Xiamen Yaji Software Co., Ltd.
// 内发光特效 // 外发光特效
// 原理: 采样周边像素alpha取平均值，叠加发光效果 // 原理：采样周边像素alpha取平均值，给外部加发光效果(1-col.a可避免内部发光)
CCEffect %{ CCEffect %{
techniques: techniques:
- passes: - passes:
@ -92,7 +92,7 @@ CCProgram fs %{
uniform sampler2D texture; uniform sampler2D texture;
#endif #endif
#if SHOW_INNER_GLOW #if SHOW_OUTTER_GLOW
uniform glow { uniform glow {
// 发光颜色 // 发光颜色
@ -127,8 +127,6 @@ 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「周边一圈」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);
@ -155,14 +153,14 @@ CCProgram fs %{
return 0.0; return 0.0;
} }
// 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 // // 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
// 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 // // 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 // // 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 // // 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 <= glowThreshold) { // if (srcColor.a <= glowThreshold) {
return srcColor.a; // return srcColor.a;
} // }
// 将传入的指定距离，平均分成10圈，求出每一圈的平均透明度， // 将传入的指定距离，平均分成10圈，求出每一圈的平均透明度，
// 然后求和取平均值，那么就可以得到该点的平均透明度 // 然后求和取平均值，那么就可以得到该点的平均透明度
@ -198,42 +196,42 @@ CCProgram fs %{
gl_FragColor = o; gl_FragColor = o;
#if SHOW_INNER_GLOW #if SHOW_OUTTER_GLOW
// 目标颜色（图像）
vec4 color_dest = o;
// 获取发光透明度 // 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 // 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();
// 而内发光是从边缘开始的，那么什么算是边缘呢？ // // 而外发光是从边缘开始的，那么什么算是边缘呢？
// 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 // // 一般图像边缘是存在渐变，即从图像内 1.0-> 0.0 图像外，那么发光边缘我们可以这样子定义
// 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 // // 当该点的透明度小于一个阈值，那么我们就当该点为一个发光点
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 // // 给点调料，让靠近边缘的更加亮
// 因此我们需要翻转一下透明度 // alpha = -1.0 * (alpha - 1.0) * (alpha - 1.0) * (alpha - 1.0) * (alpha - 1.0) + 1.0;
alpha = 1.0 - alpha; // } else {
// // 然后这里大于阈值的基本就是便是图像本身，不需要发光，那么将发光透明度置为0
// alpha = 0.0;
// }
// 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;
} // 外发光颜色
// 源颜色（内发光） vec4 color_dest = glowColor * alpha;
vec4 color_src = glowColor * alpha; vec4 color_src = o;
// 按照这个顺序，源颜色就是内发光颜色，目标颜色就是图案颜色色 // 本次我们将先画外发光作为背景，然后在上方放图像
// 所以命名就是 color_src, color_dest
// 按照混合颜色规则 http://docs.cocos.com/creator/manual/zh/advanced-topics/ui-auto-batch.html#blend-%E6%A8%A1%E5%BC%8F
// 要在图案上方，叠加一个内发光，将两者颜色混合起来，那么最终选择的混合模式如下：
// //
// （内发光）color_src: GL_SRC_ALPHA // 按照混合颜色规则 http://docs.cocos.com/creator/manual/zh/advanced-topics/ui-auto-batch.html#blend-%E6%A8%A1%E5%BC%8F
// （原图像）color_dest: GL_ONE //
// 最终选择的混合模式如下：
//
// （原图像）color_src: GL_SRC_ALPHA
// （外发光）color_dest: GL_ONE_MINUS_SRC_ALPHAA
// //
// 即最终颜色如下： // 即最终颜色如下：
// color_src * GL_SRC_ALPHA + color_dest * GL_ONE // color_src * GL_SRC_ALPHA + color_dest * GL_ONE_MINUS_SRC_ALPHAA
gl_FragColor = color_src * color_src.a + color_dest; gl_FragColor = color_src * color_src.a + color_dest * (1.0 - color_src.a);
#endif #endif
} }
}% }%

4
assets/effects/sprite-glow-outter.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\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" "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_OUTTER_GLOW\n\nuniform vec4 glowColor;\nuniform float glowColorSize;\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 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_OUTTER_GLOW\n\n float alpha = getGlowAlpha();\n\n alpha = -1.0 * (alpha - 1.0) * (alpha - 1.0) * (alpha - 1.0) * (alpha - 1.0) + 1.0;\n\n vec4 color_dest = glowColor * alpha;\n vec4 color_src = o;\n\n gl_FragColor = color_src * color_src.a + color_dest * (1.0 - color_src.a);\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\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" "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_OUTTER_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 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_OUTTER_GLOW\n\n float alpha = getGlowAlpha();\n\n alpha = -1.0 * (alpha - 1.0) * (alpha - 1.0) * (alpha - 1.0) * (alpha - 1.0) + 1.0;\n\n vec4 color_dest = glowColor * alpha;\n vec4 color_src = o;\n\n gl_FragColor = color_src * color_src.a + color_dest * (1.0 - color_src.a);\n #endif\n}\n"
} }
} }
], ],

4
assets/materials/sprite-glow-outter.mtl
View File

@ -9,7 +9,7 @@
"_defines": { "_defines": {
"USE_TEXTURE": true, "USE_TEXTURE": true,
"USE_ALPHA_TEST": false, "USE_ALPHA_TEST": false,
"SHOW_INNER_GLOW": true "SHOW_OUTTER_GLOW": true
}, },
"_props": { "_props": {
"texture": null, "texture": null,
@ -21,6 +21,6 @@
"a": 255 "a": 255
}, },
"glowColorSize": 0.2, "glowColorSize": 0.2,
"glowThreshold": 0.1 "glowThreshold": 1
} }
} }

18
assets/scenes/GlowOutterEffectScene.fire
View File

@ -4745,7 +4745,7 @@
"__type__": "TypedArray", "__type__": "TypedArray",
"ctor": "Float64Array", "ctor": "Float64Array",
"array": [ "array": [
23.039999999999992, 115.20000000000002,
0, 0,
0, 0,
0, 0,
@ -4924,7 +4924,7 @@
"_N$handle": { "_N$handle": {
"__id__": 105 "__id__": 105
}, },
"_N$progress": 0.1, "_N$progress": 0.5,
"_id": "eaB07N7+FEiIyvpYG+V4DM" "_id": "eaB07N7+FEiIyvpYG+V4DM"
}, },
{ {
@ -5184,7 +5184,7 @@
"_contentSize": { "_contentSize": {
"__type__": "cc.Size", "__type__": "cc.Size",
"width": 384, "width": 384,
"height": 459.33 "height": 567.3299999999999
}, },
"_anchorPoint": { "_anchorPoint": {
"__type__": "cc.Vec2", "__type__": "cc.Vec2",
@ -5196,7 +5196,7 @@
"ctor": "Float64Array", "ctor": "Float64Array",
"array": [ "array": [
288, 288,
229.665, 283.66499999999996,
0, 0,
0, 0,
0, 0,
@ -5228,7 +5228,7 @@
"__id__": 114 "__id__": 114
}, },
"_children": [], "_children": [],
"_active": false, "_active": true,
"_components": [ "_components": [
{ {
"__id__": 116 "__id__": 116
@ -5385,7 +5385,7 @@
"ctor": "Float64Array", "ctor": "Float64Array",
"array": [ "array": [
0, 0,
-135, -243,
0, 0,
0, 0,
0, 0,
@ -5509,7 +5509,7 @@
"ctor": "Float64Array", "ctor": "Float64Array",
"array": [ "array": [
0, 0,
-348, -456,
0, 0,
0, 0,
0, 0,
@ -5846,7 +5846,7 @@
"ctor": "Float64Array", "ctor": "Float64Array",
"array": [ "array": [
0, 0,
-442.665, -550.665,
0, 0,
0, 0,
0, 0,
@ -5940,7 +5940,7 @@
"_layoutSize": { "_layoutSize": {
"__type__": "cc.Size", "__type__": "cc.Size",
"width": 384, "width": 384,
"height": 459.33 "height": 567.3299999999999
}, },
"_resize": 1, "_resize": 1,
"_N$layoutType": 2, "_N$layoutType": 2,