98 lines
2.3 KiB
C++
98 lines
2.3 KiB
C++
#include "pch.h"
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#include "shader.hpp"
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bool Shader::create(std::string vertex, std::string fragment)
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{
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GLint status;
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static char infolog[4096];
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int infolen;
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const GLchar* source;
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auto vs = glCreateShader(GL_VERTEX_SHADER);
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if (!vs)
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{
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return false;
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}
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source = vertex.c_str();
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glShaderSource(vs, 1, &source, nullptr);
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glCompileShader(vs);
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glGetShaderiv(vs, GL_COMPILE_STATUS, &status);
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glGetShaderInfoLog(vs, sizeof(infolog), &infolen, infolog);
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if (infolen > 0)
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printf("VERTEX SHADER:\n%s", infolog);
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if (status == 0)
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{
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glDeleteShader(vs);
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return false;
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}
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auto fs = glCreateShader(GL_FRAGMENT_SHADER);
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if (!fs)
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{
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glDeleteShader(vs);
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return false;
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}
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source = fragment.c_str();
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glShaderSource(fs, 1, &source, nullptr);
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glCompileShader(fs);
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glGetShaderiv(fs, GL_COMPILE_STATUS, &status);
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glGetShaderInfoLog(fs, sizeof(infolog), &infolen, infolog);
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if (infolen > 0)
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printf("FRAGMENT SHADER:\n%s", infolog);
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if (status == 0)
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{
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glDeleteShader(vs);
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glDeleteShader(fs);
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return false;
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}
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auto ps = glCreateProgram();
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if (!ps)
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{
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glDeleteShader(vs);
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glDeleteShader(fs);
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return false;
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}
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glAttachShader(ps, vs);
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glAttachShader(ps, fs);
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glDeleteShader(vs);
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glDeleteShader(fs);
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glBindAttribLocation(ps, 0, "pos");
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glBindAttribLocation(ps, 1, "uvs");
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glLinkProgram(ps);
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glGetShaderiv(ps, GL_LINK_STATUS, &status);
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glGetShaderInfoLog(ps, sizeof(infolog), &infolen, infolog);
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if (infolen > 0)
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printf("LINK SHADER:\n%s", infolog);
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if (status == 0)
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{
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glDeleteProgram(ps);
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return false;
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}
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prog = ps;
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return true;
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}
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void Shader::use()
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{
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glUseProgram(prog);
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}
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void Shader::u_vec4(std::string name, const glm::vec4& v)
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{
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auto loc = glGetUniformLocation(prog, name.c_str());
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glUniform4fv(loc, 1, glm::value_ptr(v));
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}
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void Shader::u_mat4(std::string name, const glm::mat4& m)
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{
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auto loc = glGetUniformLocation(prog, name.c_str());
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glUniformMatrix4fv(loc, 1, GL_FALSE, glm::value_ptr(m));
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}
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void Shader::u_int(std::string name, int i)
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{
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auto loc = glGetUniformLocation(prog, name.c_str());
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glUniform1i(loc, i);
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}
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