0.2 Draw axis

src/texture.c

@@ -0,0 +1,37 @@
+#include "main.h"
+#include <GL/gl.h>
+
+#define TYPE GL_TEXTURE_2D_ARRAY
+
+unsigned int config_texture( unsigned short type )
+{
+	unsigned int texture;
+
+	glGenTextures( 1, &texture );
+	glBindTexture( TYPE, texture );
+
+	{
+		glTexParameteri( TYPE, GL_TEXTURE_MIN_FILTER, GL_NEAREST );
+		glTexParameteri( TYPE, GL_TEXTURE_MAG_FILTER, GL_NEAREST );
+	}
+
+	return texture;
+}
+
+void use_texture( unsigned int texture )
+{
+	return glBindTexture( TYPE, texture );
+}
+
+void destroy_texture( unsigned int texture )
+{
+	return glDeleteTextures( 1, &texture );
+}
+
+unsigned int create_palette_texture( const unsigned char * colors )
+{
+	unsigned int texture = config_texture( TYPE );
+	glTexImage3D( TYPE, 0, GL_RGBA,
+		1, 1, (*colors)/4, 0, GL_RGBA, GL_UNSIGNED_BYTE, colors+1);
+	return texture;
+}