Test_Project_Cocos/CocosCreator-Shader-Effect-Demo
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完善内发光demo

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caizhitao
2019-12-20 15:59:56 +08:00
parent 5f5e4a9287
commit 5da364c862
12 changed files with 3124 additions and 488 deletions
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39
assets/effects/glow-inner.effect
View File

@@ -88,7 +88,7 @@ CCProgram fs %{
// 角度转弧度，公式为：弧度 = 角度 * (pi / 180)
float radian = angle * 0.01745329252; // 这个浮点数是 pi / 180
vec4 color = texture(texture, v_uv0 + vec2(distance * cos(radian), distance * sin(radian)));
return 1.0 - color.a;
return color.a;
}
/**
@@ -119,6 +119,13 @@ CCProgram fs %{
* 获取发光的透明度
*/
float getGlowAlpha() {
// 原来已经透明的点不处理
vec4 srcColor = texture(texture, v_uv0);
if (srcColor.a < 0.0000000001) {
return srcColor.a;
}
// 处理原来不透明的点，求周边平均透明度
float totalAlpha = 0.0;
totalAlpha += getDistanceAverageAlpha(glowColorSize * 0.1);
totalAlpha += getDistanceAverageAlpha(glowColorSize * 0.2);
@@ -152,26 +159,34 @@ CCProgram fs %{
gl_FragColor = o;
#if SHOW_INNER_GLOW
// 先画图案
// 目标颜色（图像）
vec4 color_dest = o;
// 然后在图案上叠加内发光
vec4 color_src = glowColor * getGlowAlpha();
// 源颜色（内发光）
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
// 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 0.0 的话，那么可能边缘会出现锯齿
// 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 > 0.1) {
alpha = 1.0 - alpha;
}
vec4 color_src = glowColor * alpha;
// 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
// 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：
// color_src: GL_SRC_ALPHA
// color_dest: GL_ONE_MINUS_SRC_ALPHA
//
// （内发光）color_src: GL_SRC_ALPHA
// （原图像）color_dest: GL_ONE
//
// 即最终颜色如下：
// color_src * GL_SRC_ALPHA + color_dest * GL_ONE_MINUS_SRC_ALPHA
gl_FragColor = color_src * color_src.a + color_dest * (1.0 - color_src.a);
// gl_FragColor = color_src + color_dest * (1.0 - color_src.a);
// gl_FragColor = color_src * (1.0 - color_src.a) + color_dest * color_src.a;
// gl_FragColor = color_src;
// gl_FragColor = color_dest * color_dest.a + color_src * (1.0 - color_dest.a);
// color_src * GL_SRC_ALPHA + color_dest * GL_ONE
gl_FragColor = color_src * color_src.a + color_dest;
#endif
}
}%

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

@@ -5,11 +5,11 @@
{
"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",
"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;\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 distance 距离 [0.0, 1.0]\n *\n * @return alpha [0.0, 1.0]\n */\nfloat getColorAlpha(float angle, float distance) {\n\n float radian = angle * 0.01745329252;\n\n vec4 color = texture2D(texture, v_uv0 + vec2(distance * cos(radian), distance * sin(radian))); \n return 1.0 - 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 distance 距离 [0.0, 1.0]\n *\n * @return average alpha [0.0, 1.0]\n */\nfloat getDistanceAverageAlpha(float distance) {\n float totalAlpha = 0.0;\n totalAlpha += getColorAlpha(0.0, distance);\n totalAlpha += getColorAlpha(30.0, distance);\n totalAlpha += getColorAlpha(60.0, distance);\n totalAlpha += getColorAlpha(90.0, distance);\n totalAlpha += getColorAlpha(120.0, distance);\n totalAlpha += getColorAlpha(150.0, distance);\n totalAlpha += getColorAlpha(180.0, distance);\n totalAlpha += getColorAlpha(210.0, distance);\n totalAlpha += getColorAlpha(240.0, distance);\n totalAlpha += getColorAlpha(270.0, distance);\n totalAlpha += getColorAlpha(300.0, distance);\n totalAlpha += getColorAlpha(330.0, distance);\n return totalAlpha * (1.0 / 12.0);\n}\n\n/**\n * 获取发光的透明度\n */\nfloat getGlowAlpha() {\n float totalAlpha = 0.0;\n totalAlpha += getDistanceAverageAlpha(glowColorSize * 0.1);\n totalAlpha += getDistanceAverageAlpha(glowColorSize * 0.2);\n totalAlpha += getDistanceAverageAlpha(glowColorSize * 0.3);\n totalAlpha += getDistanceAverageAlpha(glowColorSize * 0.4);\n totalAlpha += getDistanceAverageAlpha(glowColorSize * 0.5);\n totalAlpha += getDistanceAverageAlpha(glowColorSize * 0.6);\n totalAlpha += getDistanceAverageAlpha(glowColorSize * 0.7);\n totalAlpha += getDistanceAverageAlpha(glowColorSize * 0.8);\n totalAlpha += getDistanceAverageAlpha(glowColorSize * 0.9);\n totalAlpha += getDistanceAverageAlpha(glowColorSize * 1.0);\n return 1.0 - totalAlpha * (1.0 / 10.0);\n\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 vec4 color_src = glowColor * getGlowAlpha();\n\n gl_FragColor = color_src * color_src.a + color_dest * (1.0 - color_src.a);\n\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;\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 distance 距离 [0.0, 1.0]\n *\n * @return alpha [0.0, 1.0]\n */\nfloat getColorAlpha(float angle, float distance) {\n\n float radian = angle * 0.01745329252;\n\n vec4 color = texture2D(texture, v_uv0 + vec2(distance * cos(radian), distance * 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 distance 距离 [0.0, 1.0]\n *\n * @return average alpha [0.0, 1.0]\n */\nfloat getDistanceAverageAlpha(float distance) {\n float totalAlpha = 0.0;\n totalAlpha += getColorAlpha(0.0, distance);\n totalAlpha += getColorAlpha(30.0, distance);\n totalAlpha += getColorAlpha(60.0, distance);\n totalAlpha += getColorAlpha(90.0, distance);\n totalAlpha += getColorAlpha(120.0, distance);\n totalAlpha += getColorAlpha(150.0, distance);\n totalAlpha += getColorAlpha(180.0, distance);\n totalAlpha += getColorAlpha(210.0, distance);\n totalAlpha += getColorAlpha(240.0, distance);\n totalAlpha += getColorAlpha(270.0, distance);\n totalAlpha += getColorAlpha(300.0, distance);\n totalAlpha += getColorAlpha(330.0, distance);\n return totalAlpha * (1.0 / 12.0);\n}\n\n/**\n * 获取发光的透明度\n */\nfloat getGlowAlpha() {\n\n vec4 srcColor = texture2D(texture, v_uv0);\n if (srcColor.a < 0.0000000001) {\n return srcColor.a;\n }\n\n float totalAlpha = 0.0;\n totalAlpha += getDistanceAverageAlpha(glowColorSize * 0.1);\n totalAlpha += getDistanceAverageAlpha(glowColorSize * 0.2);\n totalAlpha += getDistanceAverageAlpha(glowColorSize * 0.3);\n totalAlpha += getDistanceAverageAlpha(glowColorSize * 0.4);\n totalAlpha += getDistanceAverageAlpha(glowColorSize * 0.5);\n totalAlpha += getDistanceAverageAlpha(glowColorSize * 0.6);\n totalAlpha += getDistanceAverageAlpha(glowColorSize * 0.7);\n totalAlpha += getDistanceAverageAlpha(glowColorSize * 0.8);\n totalAlpha += getDistanceAverageAlpha(glowColorSize * 0.9);\n totalAlpha += getDistanceAverageAlpha(glowColorSize * 1.0);\n return totalAlpha * (1.0 / 10.0);\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 > 0.1) {\n alpha = 1.0 - alpha;\n }\n vec4 color_src = glowColor * alpha;\n\n gl_FragColor = color_src * color_src.a + color_dest;\n #endif\n}\n"
},
"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",
"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};\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 distance 距离 [0.0, 1.0]\n *\n * @return alpha [0.0, 1.0]\n */\nfloat getColorAlpha(float angle, float distance) {\n\n float radian = angle * 0.01745329252;\n\n vec4 color = texture(texture, v_uv0 + vec2(distance * cos(radian), distance * sin(radian))); \n return 1.0 - 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 distance 距离 [0.0, 1.0]\n *\n * @return average alpha [0.0, 1.0]\n */\nfloat getDistanceAverageAlpha(float distance) {\n float totalAlpha = 0.0;\n totalAlpha += getColorAlpha(0.0, distance);\n totalAlpha += getColorAlpha(30.0, distance);\n totalAlpha += getColorAlpha(60.0, distance);\n totalAlpha += getColorAlpha(90.0, distance);\n totalAlpha += getColorAlpha(120.0, distance);\n totalAlpha += getColorAlpha(150.0, distance);\n totalAlpha += getColorAlpha(180.0, distance);\n totalAlpha += getColorAlpha(210.0, distance);\n totalAlpha += getColorAlpha(240.0, distance);\n totalAlpha += getColorAlpha(270.0, distance);\n totalAlpha += getColorAlpha(300.0, distance);\n totalAlpha += getColorAlpha(330.0, distance);\n return totalAlpha * (1.0 / 12.0);\n}\n\n/**\n * 获取发光的透明度\n */\nfloat getGlowAlpha() {\n float totalAlpha = 0.0;\n totalAlpha += getDistanceAverageAlpha(glowColorSize * 0.1);\n totalAlpha += getDistanceAverageAlpha(glowColorSize * 0.2);\n totalAlpha += getDistanceAverageAlpha(glowColorSize * 0.3);\n totalAlpha += getDistanceAverageAlpha(glowColorSize * 0.4);\n totalAlpha += getDistanceAverageAlpha(glowColorSize * 0.5);\n totalAlpha += getDistanceAverageAlpha(glowColorSize * 0.6);\n totalAlpha += getDistanceAverageAlpha(glowColorSize * 0.7);\n totalAlpha += getDistanceAverageAlpha(glowColorSize * 0.8);\n totalAlpha += getDistanceAverageAlpha(glowColorSize * 0.9);\n totalAlpha += getDistanceAverageAlpha(glowColorSize * 1.0);\n return 1.0 - totalAlpha * (1.0 / 10.0);\n\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 vec4 color_src = glowColor * getGlowAlpha();\n\n gl_FragColor = color_src * color_src.a + color_dest * (1.0 - color_src.a);\n\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};\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 distance 距离 [0.0, 1.0]\n *\n * @return alpha [0.0, 1.0]\n */\nfloat getColorAlpha(float angle, float distance) {\n\n float radian = angle * 0.01745329252;\n\n vec4 color = texture(texture, v_uv0 + vec2(distance * cos(radian), distance * 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 distance 距离 [0.0, 1.0]\n *\n * @return average alpha [0.0, 1.0]\n */\nfloat getDistanceAverageAlpha(float distance) {\n float totalAlpha = 0.0;\n totalAlpha += getColorAlpha(0.0, distance);\n totalAlpha += getColorAlpha(30.0, distance);\n totalAlpha += getColorAlpha(60.0, distance);\n totalAlpha += getColorAlpha(90.0, distance);\n totalAlpha += getColorAlpha(120.0, distance);\n totalAlpha += getColorAlpha(150.0, distance);\n totalAlpha += getColorAlpha(180.0, distance);\n totalAlpha += getColorAlpha(210.0, distance);\n totalAlpha += getColorAlpha(240.0, distance);\n totalAlpha += getColorAlpha(270.0, distance);\n totalAlpha += getColorAlpha(300.0, distance);\n totalAlpha += getColorAlpha(330.0, distance);\n return totalAlpha * (1.0 / 12.0);\n}\n\n/**\n * 获取发光的透明度\n */\nfloat getGlowAlpha() {\n\n vec4 srcColor = texture(texture, v_uv0);\n if (srcColor.a < 0.0000000001) {\n return srcColor.a;\n }\n\n float totalAlpha = 0.0;\n totalAlpha += getDistanceAverageAlpha(glowColorSize * 0.1);\n totalAlpha += getDistanceAverageAlpha(glowColorSize * 0.2);\n totalAlpha += getDistanceAverageAlpha(glowColorSize * 0.3);\n totalAlpha += getDistanceAverageAlpha(glowColorSize * 0.4);\n totalAlpha += getDistanceAverageAlpha(glowColorSize * 0.5);\n totalAlpha += getDistanceAverageAlpha(glowColorSize * 0.6);\n totalAlpha += getDistanceAverageAlpha(glowColorSize * 0.7);\n totalAlpha += getDistanceAverageAlpha(glowColorSize * 0.8);\n totalAlpha += getDistanceAverageAlpha(glowColorSize * 0.9);\n totalAlpha += getDistanceAverageAlpha(glowColorSize * 1.0);\n return totalAlpha * (1.0 / 10.0);\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 > 0.1) {\n alpha = 1.0 - alpha;\n }\n vec4 color_src = glowColor * alpha;\n\n gl_FragColor = color_src * color_src.a + color_dest;\n #endif\n}\n"
}
}
],