{"id":637,"date":"2022-06-14T14:31:47","date_gmt":"2022-06-14T06:31:47","guid":{"rendered":"https:\/\/www.acgloby.com\/?p=637"},"modified":"2022-06-14T14:31:47","modified_gmt":"2022-06-14T06:31:47","slug":"opengl-shader","status":"publish","type":"post","link":"https:\/\/www.acgloby.com\/index.php\/2022\/06\/14\/opengl-shader\/","title":{"rendered":"OpenGL-Shader"},"content":{"rendered":"\n<h3 class=\"has-medium-font-size wp-block-heading\">GLSL\u6570\u636e\u7c7b\u578b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">GLSL\u4e2d\u5305\u542bC\u7b49\u5176\u5b83\u8bed\u8a00\u5927\u90e8\u5206\u7684\u9ed8\u8ba4\u57fa\u7840\u6570\u636e\u7c7b\u578b\uff1aint\u3001float\u3001double\u3001uint\u548cbool\u3002\u652f\u6301\u4e24\u79cd\u5bb9\u5668\u7c7b\u578b\uff0c\u5206\u522b\u662f\u5411\u91cf(Vector)\u548c\u77e9\u9635(Matrix)\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table is-style-regular\"><table class=\"has-white-background-color has-text-color has-background has-fixed-layout\" style=\"color:#474747\"><thead><tr><th>\u7c7b\u578b<\/th><th>\u542b\u4e49<\/th><\/tr><\/thead><tbody><tr><td><code>vecn<\/code><\/td><td>\u5305\u542b<code>n<\/code>\u4e2afloat\u5206\u91cf\u7684\u9ed8\u8ba4\u5411\u91cf<\/td><\/tr><tr><td><code>bvecn<\/code><\/td><td>\u5305\u542b<code>n<\/code>\u4e2abool\u5206\u91cf\u7684\u5411\u91cf<\/td><\/tr><tr><td><code>ivecn<\/code><\/td><td>\u5305\u542b<code>n<\/code>\u4e2aint\u5206\u91cf\u7684\u5411\u91cf<\/td><\/tr><tr><td><code>uvecn<\/code><\/td><td>\u5305\u542b<code>n<\/code>\u4e2aunsigned int\u5206\u91cf\u7684\u5411\u91cf<\/td><\/tr><tr><td><code>dvecn<\/code><\/td><td>\u5305\u542b<code>n<\/code>\u4e2adouble\u5206\u91cf\u7684\u5411\u91cf<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e00\u4e2a\u5411\u91cf\u7684\u5206\u91cf\u53ef\u4ee5\u901a\u8fc7<code>vec.x<\/code>\u8fd9\u79cd\u65b9\u5f0f\u83b7\u53d6\uff0c\u8fd9\u91cc<code>x<\/code>\u662f\u6307\u8fd9\u4e2a\u5411\u91cf\u7684\u7b2c\u4e00\u4e2a\u5206\u91cf\u3002\u4f60\u53ef\u4ee5\u5206\u522b\u4f7f\u7528<code>.x<\/code>\u3001<code>.y<\/code>\u3001<code>.z<\/code>\u548c<code>.w<\/code>\u6765\u83b7\u53d6\u5b83\u4eec\u7684\u7b2c1\u30012\u30013\u30014\u4e2a\u5206\u91cf\u3002GLSL\u4e5f\u5141\u8bb8\u4f60\u5bf9\u989c\u8272\u4f7f\u7528<code>rgba<\/code>\uff0c\u6216\u662f\u5bf9\u7eb9\u7406\u5750\u6807\u4f7f\u7528<code>stpq<\/code>\u8bbf\u95ee\u76f8\u540c\u7684\u5206\u91cf\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5411\u91cf\u5141\u8bb8\u7075\u6d3b\u7684\u5206\u91cf\u9009\u62e9\u65b9\u5f0f\uff0c\u53eb\u505a\u91cd\u7ec4(Swizzling)\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/\u91cd\u7ec4\nvec2 someVec;\nvec4 differentVec = someVec.xyxx;\nvec3 anotherVec = differentVec.zyw;\nvec4 otherVec = someVec.xxxx + anotherVec.yxzy;<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h3 class=\"has-medium-font-size wp-block-heading\">Uniform<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Uniform\u662f\u4e00\u79cd\u4eceCPU\u4e2d\u7684\u5e94\u7528\u5411GPU\u4e2d\u7684\u7740\u8272\u5668\u53d1\u9001\u6570\u636e\u7684\u65b9\u5f0f\uff0cuniform\u662f\u5168\u5c40\u7684(Global)\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>#version 330 core\nout vec4 FragColor;\n\nuniform vec4 ourColor;\/\/ \u5728fragmentShader\u4e2d\u58f0\u660e\u53d8\u91cf\n\nvoid main()\n{\n    FragColor = ourColor;\n}<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/\u83b7\u53d6\u8fd0\u884c\u7684\u79d2\u6570\nfloat timeValue = glfwGetTime(); \nfloat greenValue = (sin(timeValue) \/ 2.0f) + 0.5f;\nint vertexColorLocation = glGetUniformLocation(shaderProgram, \"ourColor\");\nglUseProgram(shaderProgram);\nglUniform4f(vertexColorLocation, 0.0f, greenValue, 0.0f, 1.0f);<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\"><li>\u7528glGetUniformLocation\u67e5\u8be2uniform&nbsp;<var>ourColor<\/var>\u7684\u4f4d\u7f6e\u503c\u3002<\/li><li>\u901a\u8fc7glUniform4f\u51fd\u6570\u8bbe\u7f6euniform\u3002<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u56e0\u4e3aOpenGL\u5728\u5176\u6838\u5fc3\u662f\u4e00\u4e2aC\u5e93\uff0c\u6240\u4ee5\u5b83\u4e0d\u652f\u6301\u7c7b\u578b\u91cd\u8f7d\uff0c\u5728\u51fd\u6570\u53c2\u6570\u4e0d\u540c\u7684\u65f6\u5019\u5c31\u8981\u4e3a\u5176\u5b9a\u4e49\u65b0\u7684\u51fd\u6570\u3002glUniform\u662f\u4e00\u4e2a\u5178\u578b\u4f8b\u5b50\u3002\u8fd9\u4e2a\u51fd\u6570\u6709\u4e00\u4e2a\u7279\u5b9a\u7684\u540e\u7f00\uff0c\u6807\u8bc6\u8bbe\u5b9a\u7684uniform\u7684\u7c7b\u578b\u3002\u53ef\u80fd\u7684\u540e\u7f00\u6709\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u540e\u7f00<\/th><th>\u542b\u4e49<\/th><\/tr><\/thead><tbody><tr><td><code>f<\/code><\/td><td>\u51fd\u6570\u9700\u8981\u4e00\u4e2afloat\u4f5c\u4e3a\u5b83\u7684\u503c<\/td><\/tr><tr><td><code>i<\/code><\/td><td>\u51fd\u6570\u9700\u8981\u4e00\u4e2aint\u4f5c\u4e3a\u5b83\u7684\u503c<\/td><\/tr><tr><td><code>ui<\/code><\/td><td>\u51fd\u6570\u9700\u8981\u4e00\u4e2aunsigned int\u4f5c\u4e3a\u5b83\u7684\u503c<\/td><\/tr><tr><td><code>3f<\/code><\/td><td>\u51fd\u6570\u9700\u89813\u4e2afloat\u4f5c\u4e3a\u5b83\u7684\u503c<\/td><\/tr><tr><td><code>fv<\/code><\/td><td>\u51fd\u6570\u9700\u8981\u4e00\u4e2afloat\u5411\u91cf\/\u6570\u7ec4\u4f5c\u4e3a\u5b83\u7684\u503c<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<figure class=\"wp-block-video\"><video controls src=\"https:\/\/learnopengl-cn.github.io\/img\/01\/05\/shaders.mp4\"><\/video><\/figure>\n\n\n\n<h3 class=\"has-medium-font-size wp-block-heading\" id=\"block-b4598115-4b19-4a23-932a-b1c90a2fd9ed\">\u5c5e\u6027<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>float vertices&#91;] = {\n    \/\/ \u4f4d\u7f6e              \/\/ \u989c\u8272\n     0.5f, -0.5f, 0.0f,  1.0f, 0.0f, 0.0f,   \/\/ \u53f3\u4e0b\n    -0.5f, -0.5f, 0.0f,  0.0f, 1.0f, 0.0f,   \/\/ \u5de6\u4e0b\n     0.0f,  0.5f, 0.0f,  0.0f, 0.0f, 1.0f    \/\/ \u9876\u90e8\n};<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u9876\u70b9\u5c5e\u6027\u4e2d\u589e\u52a0\u4e86\u989c\u8272\u5c5e\u6027 \uff0c\u66f4\u65b0\u540e\u7684VBO\u5185\u5b58\u6570\u636e<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/www.acgloby.com\/wp-content\/uploads\/2022\/06\/image-2.png\" alt=\"\" class=\"wp-image-675\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f4d\u7f6e\u5c5e\u6027\u5bf9\u5e94layout\uff08location  =  0\uff09\uff0c\u989c\u8272\u5c5e\u6027\u5bf9\u5e94layout\uff08location  =  1\uff09\uff0c\u53d63\u4f4dfloat\uff0c\u6bcf\u7ec4\u6570\u636e\u5360\u75286\u4e2afloat\uff0c\u6b65\u957f\u503c\u4e3a6\u4e2afloat\uff0c\u5176\u4e2d\u4e09\u4e2a\u662f\u4f4d\u7f6e\uff0c\u4e09\u4e2a\u662f\u989c\u8272\u3002\u4f4d\u7f6e\u5c5e\u6027\u4ece0\u5f00\u59cb\uff0c\u6240\u6709\u504f\u79fb\u503c\u4e3a0\uff0c\u989c\u8272\u5c5e\u6027\u4ece3\u5f00\u59cb\uff0c\u504f\u79fb\u503c\u4e3a3\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ \u4f4d\u7f6e\u5c5e\u6027\nglVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 6 * sizeof(float), (void*)0);\nglEnableVertexAttribArray(0);\n\/\/ \u989c\u8272\u5c5e\u6027\nglVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, 6 * sizeof(float), (void*)(3* sizeof(float)));\nglEnableVertexAttribArray(1);<\/code><\/pre>\n\n\n\n<h6 class=\"wp-block-heading\" style=\"font-size:16px\">\u8f93\u51fa\u6548\u679c<\/h6>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/www.acgloby.com\/wp-content\/uploads\/2022\/06\/image.png\" alt=\"\" class=\"wp-image-652\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h3 class=\"has-medium-font-size wp-block-heading\">\u4ece\u6587\u4ef6\u4e2d\u8bfb\u53d6Shader<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">1.\u8bfb\u53d6\u6587\u4ef6\u8f6c\u4e3astring\uff0c\u7528\u5230\u4e86#include &lt;fastream>\u548c#include&lt;sstream<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>std::string vertexString;\nstd::string fragmentString;\nstd::ifstream  vertexFile;\nstd::ifstream fragmentFile;\n\/\/ \u4fdd\u8bc1ifstream\u5bf9\u8c61\u53ef\u4ee5\u629b\u51fa\u5f02\u5e38\nvertexFile.exceptions (std::ifstream::failbit | std::ifstream::badbit);\nfragmentFile.exceptions (std::ifstream::failbit | std::ifstream::badbit);\ntry\n{\n    \/\/\u6253\u5f00\u6587\u4ef6\n    vertexFile.open(vertexPath);\n    fragmentFile.open(fragmentPath);\n    if (!vertexFile.is_open() || !fragmentFile.is_open())\n    {\n        throw std::exception(\"open file error\");\n    }\n    std::stringstream vertexShaderStream, fragmentShaderStream;\n    \/\/\u8bfb\u53d6\u6587\u4ef6\u7684\u7f13\u51b2\u5185\u5bb9\u5230\u6570\u636e\u6d41\u4e2d\n    vertexShaderStream &lt;&lt; vertexFile.rdbuf();\n    fragmentShaderStream &lt;&lt; fragmentFile.rdbuf();\n\n    vertexFile.close();\n    fragmentFile.close();\n    \/\/\u6570\u636e\u6d41\u8f6c\u4e3astring\n    vertexString = vertexShaderStream.str();\n    fragmentString = fragmentShaderStream.str();\n\n}\ncatch (const std::exception&amp; e)\n{\n    std::cout &lt;&lt; \"ERROR::SHADER::FILE_NOT_SUCCESFULLY_READ: \" &lt;&lt; e.what() &lt;&lt; std::endl;\n}<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">2.\u521b\u5efa\u7f16\u8bd1\u7740\u8272\u5668<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>unsigned int vertex, fragment;\nint success;\nchar infoLog&#91;512];\n\n\/\/\u9876\u70b9\u7740\u8272\u5668\nvertex = glCreateShader(GL_VERTEX_SHADER);\nglShaderSource(vertex, 1, &amp;vertexSource, NULL);\nglCompileShader(vertex);\n\/\/ \u6253\u5370\u7f16\u8bd1\u9519\u8bef\nglGetShaderiv(vertex, GL_COMPILE_STATUS, &amp;success);\nif (!success)\n{\n\tglGetShaderInfoLog(ID, 512, NULL, infoLog);\n\tstd::cout &lt;&lt; \"shader compile error\uff1a\" &lt;&lt; infoLog &lt;&lt; std::endl;\n};\n\t\n\/\/\u7247\u5143\u7740\u8272\u5668\nfragment = glCreateShader(GL_FRAGMENT_SHADER);\nglShaderSource(fragment, 1, &amp;fragmentSource, NULL);\nglCompileShader(fragment);\n\/\/ \u6253\u5370\u7f16\u8bd1\u9519\u8bef\nglGetShaderiv(fragment, GL_COMPILE_STATUS, &amp;success);\nif (!success)\n{\n\tglGetShaderInfoLog(ID, 512, NULL, infoLog);\n\tstd::cout &lt;&lt; \"shader compile error\uff1a\" &lt;&lt; infoLog &lt;&lt; std::endl;\n};<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">3.\u521b\u5efa\u7740\u8272\u5668\u7a0b\u5e8f\uff0c\u7ed1\u5b9a\u9876\u70b9\u548c\u7247\u5143\u7740\u8272\u5668<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ \u7740\u8272\u5668\u7a0b\u5e8f\nID = glCreateProgram();\nglAttachShader(ID, vertex);\nglAttachShader(ID, fragment);\nglLinkProgram(ID);\n\/\/ \u6253\u5370\u8fde\u63a5\u9519\u8bef\uff08\u5982\u679c\u6709\u7684\u8bdd\uff09\nglGetProgramiv(ID, GL_LINK_STATUS, &amp;success);\nif(!success)\n{\n    glGetProgramInfoLog(ID, 512, NULL, infoLog);\n    std::cout &lt;&lt; \"program linking error\uff1a\" &lt;&lt; infoLog &lt;&lt; std::endl;\n}\n\n\/\/ \u5220\u9664\u7740\u8272\u5668\uff0c\u5b83\u4eec\u5df2\u7ecf\u94fe\u63a5\u5230\u6211\u4eec\u7684\u7a0b\u5e8f\u4e2d\u4e86\uff0c\u5df2\u7ecf\u4e0d\u518d\u9700\u8981\u4e86\nglDeleteShader(vertex);\nglDeleteShader(fragment);<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">4.\u5916\u90e8\u4f7f\u7528\u7740\u8272\u5668<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>void Shader::use()\n{\n\tglUseProgram(ID);\n}<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>#include \"Shader.h\"\n\/\/\u4f7f\u7528Shader\nShader* shaderProgram = new Shader(\"vertexSource.txt\", \"fragmentSource.txt\");\nshaderProgram-&gt;use();<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5b8c\u6574\u4ee3\u7801<\/h3>\n\n\n\n<h6 class=\"wp-block-heading\" style=\"font-size:16px\">\u9876\u70b9\u7740\u8272\u5668<\/h6>\n\n\n\n<pre class=\"wp-block-code\"><code>#version 330 core\nlayout (location = 0) in vec3 aPos;\/\/ \u4f4d\u7f6e\u53d8\u91cf\u7684\u5c5e\u6027\u4f4d\u7f6e\u503c\u4e3a0\u7684\u9876\u70b9\u5750\u6807\nlayout (location = 1) in vec3 aColor;\/\/ \u4f4d\u7f6e\u53d8\u91cf\u7684\u5c5e\u6027\u4f4d\u7f6e\u503c\u4e3a1\u7684\u989c\u8272\u503c\nout vec4 vertexColor;  \/\/\u8f93\u51fa\u7684\u989c\u8272\u503c\nuniform vec4 ourColor; \/\/ \u5728OpenGL\u7a0b\u5e8f\u4ee3\u7801\u4e2d\u8bbe\u5b9a\u8fd9\u4e2a\u53d8\u91cf\n\nvoid main()\n{\n\tgl_Position = vec4(aPos.x, aPos.y, aPos.z, 1.0f);\n\tvertexColor = vec4(aColor.x,aColor.y,aColor.z,1.0f);\n}<\/code><\/pre>\n\n\n\n<h6 class=\"wp-block-heading\" style=\"font-size:16px\"><strong>\u7247\u5143\u7740\u8272\u5668<\/strong><\/h6>\n\n\n\n<pre class=\"wp-block-code\"><code>#version 330 core\n\nout vec4 FragColor;  \/\/ \u8f93\u51fa\u7684\u7247\u5143\u989c\u8272\u503c\nin vec4 vertexColor; \/\/ \u8f93\u5165\u7684\u989c\u8272\u503c\n\n\nvoid main()\n{\n\tFragColor = vertexColor;\n}<\/code><\/pre>\n\n\n\n<h6 class=\"wp-block-heading\" style=\"font-size:16px\">Shader\u7c7b<\/h6>\n\n\n\n<pre class=\"wp-block-code\"><code>#pragma once\n#include &lt;string&gt;\n\nclass Shader\n{\npublic:\n\tunsigned int ID;\n\tstd::string vertexString;\n\tstd::string fragmentString;\n\tconst char* vertexSource;\n\tconst char* fragmentSource;\n\tShader(const char* vertexPath, const char* fragmentPath);\n\t~Shader();\n\tvoid use();\n\tvoid setBool(const std::string &amp;name, bool value) const;\n\tvoid setInt(const std::string &amp;name, int value) const;\n\tvoid setFloat(const std::string &amp;name, float value) const;\n\nprivate:\n\tvoid checkCompileErrors(unsigned int ID, std::string type);\n};\n\n<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>#include \"Shader.h\"\n\n#include &lt;GL\/glew.h&gt;\n#include &lt;iostream&gt;\n#include &lt;string&gt;\n#include &lt;fstream&gt;\n#include &lt;sstream&gt;\n\nunsigned int ID;\n\nShader::Shader(const char* vertexPath, const char* fragmentPath)\n{\n\tstd::string vertexString;\n\tstd::string fragmentString;\n\tstd::ifstream  vertexFile;\n\tstd::ifstream fragmentFile;\n\tvertexFile.open(vertexPath);\n\tfragmentFile.open(fragmentPath);\n\tvertexFile.exceptions (std::ifstream::failbit | std::ifstream::badbit);\n\tfragmentFile.exceptions (std::ifstream::failbit | std::ifstream::badbit);\n\ttry\n\t{\n\t\t\n\t\tif (!vertexFile.is_open() || !fragmentFile.is_open())\n\t\t{\n\t\t\tthrow std::exception(\"open file error\");\n\t\t}\n\t\tstd::stringstream vertexShaderStream, fragmentShaderStream;\n\t\tvertexShaderStream &lt;&lt; vertexFile.rdbuf();\n\t\tfragmentShaderStream &lt;&lt; fragmentFile.rdbuf();\n\n\t\tvertexFile.close();\n\t\tfragmentFile.close();\n\t\tvertexString = vertexShaderStream.str();\n\t\tfragmentString = fragmentShaderStream.str();\n\n\t}\n\tcatch (const std::exception&amp; e)\n\t{\n\t\tstd::cout &lt;&lt; \"ERROR::SHADER::FILE_NOT_SUCCESFULLY_READ: \" &lt;&lt; e.what() &lt;&lt; std::endl;\n\t}\n\n\tconst char* vertexSource = vertexString.c_str();\n\tconst char* fragmentSource = fragmentString.c_str();\n\n\tunsigned int vertex, fragment;\n\n\t\/\/\u9876\u70b9\u7740\u8272\u5668\n\tvertex = glCreateShader(GL_VERTEX_SHADER);\n\tglShaderSource(vertex, 1, &amp;vertexSource, NULL);\n\tglCompileShader(vertex);\n\t\/\/ \u6253\u5370\u7f16\u8bd1\u9519\u8bef\n\tcheckCompileErrors(vertex, \"VERTEX\");\n\t\n\t\/\/\u7247\u5143\u7740\u8272\u5668\n\tfragment = glCreateShader(GL_FRAGMENT_SHADER);\n\tglShaderSource(fragment, 1, &amp;fragmentSource, NULL);\n\tglCompileShader(fragment);\n\t\/\/ \u6253\u5370\u7f16\u8bd1\u9519\u8bef\n\tcheckCompileErrors(fragment, \"FRAGMENT\");\n\n\tID = glCreateProgram();\n\tglAttachShader(ID, vertex);\n\tglAttachShader(ID, fragment);\n\tglLinkProgram(ID);\n\t\/\/ \u6253\u5370\u7f16\u8bd1\u9519\u8bef\n\tcheckCompileErrors(ID, \"PROGRAM\");\n\n\t\/\/ \u5220\u9664\u7740\u8272\u5668\uff0c\u5b83\u4eec\u5df2\u7ecf\u94fe\u63a5\u5230\u6211\u4eec\u7684\u7a0b\u5e8f\u4e2d\u4e86\uff0c\u5df2\u7ecf\u4e0d\u518d\u9700\u8981\u4e86\n\tglDeleteShader(vertex);\n\tglDeleteShader(fragment);\n}\n\nvoid Shader::use()\n{\n\tglUseProgram(ID);\n}\n\nvoid Shader::setBool(const std::string &amp;name, bool value) const\n{\n\tglUniform1i(glGetUniformLocation(ID, name.c_str()), (int)value);\n}\n\nvoid Shader::setInt(const std::string &amp;name, int value) const\n{\n\tglUniform1i(glGetUniformLocation(ID, name.c_str()), value);\n}\n\nvoid Shader::setFloat(const std::string &amp;name, float value) const\n{\n\tglUniform1f(glGetUniformLocation(ID, name.c_str()), value);\n}\n\n\/\/\/ &lt;summary&gt;\n\/\/\/ \u68c0\u6d4b\u7f16\u8f91\u9519\u8bef\n\/\/\/ &lt;\/summary&gt;\n\/\/\/ &lt;param name=\"ID\"&gt;&lt;\/param&gt;\n\/\/\/ &lt;param name=\"type\"&gt;&lt;\/param&gt;\nvoid Shader::checkCompileErrors(unsigned int ID, std::string type) \n{\n\tint success;\n\tchar infoLog&#91;512];\n\t\n\tif (type != \"PROGRAM\")\n\t{\n\t\tglGetShaderiv(ID, GL_COMPILE_STATUS, &amp;success);\n\t\tif (!success)\n\t\t{\n\t\t\tglGetShaderInfoLog(ID, 512, NULL, infoLog);\n\t\t\tstd::cout &lt;&lt; \"shader compile error\uff1a\" &lt;&lt; infoLog &lt;&lt; std::endl;\n\t\t};\n\t}\n\telse \n\t{\n\t\tglGetProgramiv(ID, GL_COMPILE_STATUS, &amp;success);\n\t\tif (!success)\n\t\t{\n\t\t\tglGetProgramInfoLog(ID, 512, NULL, infoLog);\n\t\t\tstd::cout &lt;&lt; \"program linking error\uff1a\" &lt;&lt; infoLog &lt;&lt; std::endl;\n\t\t};\n\t}\n\t\n}\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>GLSL\u6570\u636e\u7c7b\u578b GLSL\u4e2d\u5305\u542bC\u7b49\u5176\u5b83\u8bed\u8a00\u5927\u90e8\u5206\u7684\u9ed8\u8ba4\u57fa\u7840\u6570\u636e\u7c7b\u578b\uff1aint\u3001float\u3001double\u3001uint\u548cbool\u3002\u652f\u6301\u4e24 &#8230;<\/p>\n","protected":false},"author":1,"featured_media":652,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"emotion":"","emotion_color":"","title_style":"","license":"","footnotes":""},"categories":[3],"tags":[],"class_list":["post-637","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-graphics"],"_links":{"self":[{"href":"https:\/\/www.acgloby.com\/index.php\/wp-json\/wp\/v2\/posts\/637","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.acgloby.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.acgloby.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.acgloby.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.acgloby.com\/index.php\/wp-json\/wp\/v2\/comments?post=637"}],"version-history":[{"count":0,"href":"https:\/\/www.acgloby.com\/index.php\/wp-json\/wp\/v2\/posts\/637\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.acgloby.com\/index.php\/wp-json\/wp\/v2\/media?parent=637"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.acgloby.com\/index.php\/wp-json\/wp\/v2\/categories?post=637"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.acgloby.com\/index.php\/wp-json\/wp\/v2\/tags?post=637"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}