first commit

src/shader.cpp

@@ -0,0 +1,75 @@
+#include "shader.h"
+
+static bool _shader_compile(GLuint handle, const char* path);
+
+static bool
+_shader_compile(GLuint handle, const char* path)
+{
+	char buffer[SHADER_BUFFER_MAX];
+	char compileLog[SHADER_BUFFER_MAX];
+	s32 isCompile;
+
+	file_read(path, buffer, SHADER_BUFFER_MAX);
+
+	const GLchar* source = buffer;
+
+	glShaderSource(handle, 1, &source, NULL);
+
+	glCompileShader(handle);
+	glGetShaderiv(handle, GL_COMPILE_STATUS, &isCompile);
+
+	if (!isCompile)
+	{
+		glGetShaderInfoLog(handle, SHADER_BUFFER_MAX, NULL, compileLog);
+		printf(STRING_ERROR_SHADER_INIT, path, compileLog);
+		return false;
+	}
+
+	return true;
+}
+
+bool
+shader_init(Shader* self, const char* vertexPath, const char* fragmentPath)
+{
+	GLuint vertexHandle;
+	GLuint fragmentHandle;
+	bool isSuccess;
+
+ 	memset(self, '\0', sizeof(Shader));
+
+	vertexHandle = glCreateShader(GL_VERTEX_SHADER);
+	fragmentHandle = glCreateShader(GL_FRAGMENT_SHADER);
+
+	if 
+	(
+		!_shader_compile(vertexHandle, vertexPath) 	||
+		!_shader_compile(fragmentHandle, fragmentPath)
+	)
+		return false;
+
+	self->handle = glCreateProgram();
+
+	glAttachShader(self->handle, vertexHandle);
+	glAttachShader(self->handle, fragmentHandle);
+
+	glLinkProgram(self->handle);
+
+	glDeleteShader(vertexHandle);
+	glDeleteShader(fragmentHandle);
+
+	printf(STRING_INFO_SHADER_INIT, vertexPath, fragmentPath);
+
+	return true;
+}
+
+void
+shader_use(Shader* self)
+{
+	glUseProgram(self->handle);
+}
+
+void
+shader_free(Shader* self)
+{
+	glDeleteProgram(self->handle);
+}