68 lines
2 KiB
C++
68 lines
2 KiB
C++
#include "OpenGlShaderProgram.h"
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#include "File.h"
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#include "FileLogger.h"
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#define GL_GLEXT_PROTOTYPES
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#include <GL/gl.h>
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#include <GL/glu.h>
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OpenGlShaderProgram::OpenGlShaderProgram(const Path& vertShaderPath, const Path& fragShaderPath)
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{
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const auto vert_shader_source = File(vertShaderPath).read();
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const auto frag_shader_source = File(fragShaderPath).read();
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unsigned int vertexShader = glCreateShader(GL_VERTEX_SHADER);
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const char* vert_source = vert_shader_source.c_str();
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glShaderSource(vertexShader, 1, &vert_source, nullptr);
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glCompileShader(vertexShader);
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int success;
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char infoLog[512];
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glGetShaderiv(vertexShader, GL_COMPILE_STATUS, &success);
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if(!success)
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{
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glGetShaderInfoLog(vertexShader, 512, nullptr, infoLog);
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MLOG_ERROR("ERROR::SHADER::VERTEX::COMPILATION_FAILED: " << infoLog);
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if (auto errCode = glGetError(); errCode != GL_NO_ERROR)
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{
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auto errString = gluErrorString(errCode);
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MLOG_ERROR("Got gl error " << errString);
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}
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}
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unsigned int fragmentShader;
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fragmentShader = glCreateShader(GL_FRAGMENT_SHADER);
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const char* frag_source = frag_shader_source.c_str();
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glShaderSource(fragmentShader, 1, &frag_source, nullptr);
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glCompileShader(fragmentShader);
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glGetShaderiv(fragmentShader, GL_COMPILE_STATUS, &success);
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if(!success)
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{
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glGetShaderInfoLog(fragmentShader, 512, NULL, infoLog);
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MLOG_ERROR("ERROR::SHADER::FRAGMENT::COMPILATION_FAILED: " << infoLog);
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}
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mHandle = glCreateProgram();
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glAttachShader(mHandle, vertexShader);
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glAttachShader(mHandle, fragmentShader);
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glLinkProgram(mHandle);
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glGetProgramiv(mHandle, GL_LINK_STATUS, &success);
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if(!success)
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{
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glGetProgramInfoLog(mHandle, 512, NULL, infoLog);
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MLOG_ERROR("Shader linking FAILED: " << infoLog);
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}
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glDeleteShader(vertexShader);
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glDeleteShader(fragmentShader);
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}
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unsigned int OpenGlShaderProgram::getHandle() const
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{
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return mHandle;
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}
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