58 lines
1.4 KiB
C++
58 lines
1.4 KiB
C++
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#include "gfx.hpp"
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#include <iostream>
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#include "io.hpp"
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GLuint compileShader(const std::string& shaderPath, GLenum shaderType)
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{
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GLuint shader;
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GLint success;
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std::string shaderSource = readFile(shaderPath);
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const char* source = shaderSource.c_str();
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shader = glCreateShader(shaderType);
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glShaderSource(shader, 1, &source, NULL);
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glCompileShader(shader);
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glGetShaderiv(shader, GL_COMPILE_STATUS, &success);
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if (!success)
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{
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GLchar infoLog[512];
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glGetShaderInfoLog(shader, 512, NULL, infoLog);
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std::cerr << "shader compilation failed" << std::endl
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<< infoLog << std::endl;
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}
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return shader;
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}
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GLuint compileShaderProgram()
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{
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GLuint vertShader = compileShader("./vert.glsl", GL_VERTEX_SHADER);
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GLuint fragShader = compileShader("./frag.glsl", GL_FRAGMENT_SHADER);
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GLuint shaderProgram = glCreateProgram();
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glAttachShader(shaderProgram, vertShader);
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glAttachShader(shaderProgram, fragShader);
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glLinkProgram(shaderProgram);
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GLint success;
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GLchar infoLog[512];
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glGetProgramiv(shaderProgram, GL_LINK_STATUS, &success);
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if (!success)
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{
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glGetProgramInfoLog(shaderProgram, 512, NULL, infoLog);
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std::cerr << "shader linking failed" << std::endl
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<< infoLog << std::endl;
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}
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// We no longer need the individual shaders
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glDeleteShader(vertShader);
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glDeleteShader(fragShader);
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return shaderProgram;
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}
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