Initial commit

App/Source/Shader.cpp

@@ -0,0 +1,81 @@
+#include "Shader.h"
+
+#include <iostream>
+#include <fstream>
+
+#include <glad/gl.h>
+
+uint32_t CreateComputeShader(const std::filesystem::path& path)
+{
+	std::ifstream file(path);
+
+	if (!file.is_open())
+	{
+		std::cerr << "Failed to open file: " << path.string() << std::endl;
+		return -1;
+	}
+
+	std::ostringstream contentStream;
+	contentStream << file.rdbuf();
+	std::string shaderSource = contentStream.str();
+
+	GLuint shaderHandle = glCreateShader(GL_COMPUTE_SHADER);
+
+	const GLchar* source = (const GLchar*)shaderSource.c_str();
+	glShaderSource(shaderHandle, 1, &source, 0);
+
+	glCompileShader(shaderHandle);
+
+	GLint isCompiled = 0;
+	glGetShaderiv(shaderHandle, GL_COMPILE_STATUS, &isCompiled);
+	if (isCompiled == GL_FALSE)
+	{
+		GLint maxLength = 0;
+		glGetShaderiv(shaderHandle, GL_INFO_LOG_LENGTH, &maxLength);
+
+		std::vector<GLchar> infoLog(maxLength);
+		glGetShaderInfoLog(shaderHandle, maxLength, &maxLength, &infoLog[0]);
+
+		std::cerr << infoLog.data() << std::endl;
+
+		glDeleteShader(shaderHandle);
+		return -1;
+	}
+
+	GLuint program = glCreateProgram();
+	glAttachShader(program, shaderHandle);
+	glLinkProgram(program);
+
+	GLint isLinked = 0;
+	glGetProgramiv(program, GL_LINK_STATUS, (int*)&isLinked);
+	if (isLinked == GL_FALSE)
+	{
+		GLint maxLength = 0;
+		glGetProgramiv(program, GL_INFO_LOG_LENGTH, &maxLength);
+
+		std::vector<GLchar> infoLog(maxLength);
+		glGetProgramInfoLog(program, maxLength, &maxLength, &infoLog[0]);
+		
+		std::cerr << infoLog.data() << std::endl;
+
+		glDeleteProgram(program);
+		glDeleteShader(shaderHandle);
+
+		return -1;
+	}
+
+	glDetachShader(program, shaderHandle);
+	return program;
+}
+
+uint32_t ReloadComputeShader(uint32_t shaderHandle, const std::filesystem::path& path)
+{
+	uint32_t newShaderHandle = CreateComputeShader(path);
+
+	// Return old shader if compilation failed
+	if (newShaderHandle == -1)
+		return shaderHandle;
+
+	glDeleteProgram(shaderHandle);
+	return newShaderHandle;
+}