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Save created shaders internally

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This commit is contained in:
shivshank 2018-05-31 18:31:32 -04:00
parent 8557bfece8
commit 18fac37072
1 changed files with 39 additions and 3 deletions
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42
src/lib.rs
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@ -28,9 +28,20 @@ pub fn gotta_go_fast<S: ToString>(window_title: S, window_width: i32, window_hei
gl::load_with(|symbol| gl_window.get_proc_address(symbol) as *const _);
}
let vertex_source = include_str!("./default_vertex_shader.glsl");
let fragment_source = include_str!("./default_fragment_shader.glsl");
let program = rustic_gl::raw::create_basic_program(vertex_source, fragment_source).unwrap();
let vertex_shader = rustic_gl::raw::create_shader(
gl::VERTEX_SHADER,
include_str!("./default_vertex_shader.glsl"),
).unwrap();
let fragment_shader = rustic_gl::raw::create_shader(
gl::FRAGMENT_SHADER,
include_str!("./default_fragment_shader.glsl"),
).unwrap();
let program = unsafe {
build_program(&[
Some(vertex_shader),
Some(fragment_shader),
])
};
let sampler_location = unsafe {
let location = gl::GetUniformLocation(program, b"u_tex0\0".as_ptr() as *const _);
@ -70,6 +81,9 @@ pub fn gotta_go_fast<S: ToString>(window_title: S, window_width: i32, window_hei
gl_window,
program,
sampler_location,
vertex_shader: Some(vertex_shader),
geometry_shader: None,
fragment_shader: Some(fragment_shader),
texture,
vao,
vbo,
@ -84,6 +98,9 @@ pub struct Framebuffer {
gl_window: glutin::GlWindow,
program: GLuint,
sampler_location: GLint,
vertex_shader: Option<GLuint>,
geometry_shader: Option<GLuint>,
fragment_shader: Option<GLuint>,
texture: GLuint,
vao: GLuint,
vbo: GLuint,
@ -232,3 +249,22 @@ fn create_gl_buffer() -> Option<GLuint> {
Some(b)
}
}
unsafe fn build_program(shaders: &[Option<GLuint>]) -> GLuint {
let program = rustic_gl::raw::create_program()
.unwrap();
for shader in shaders.iter() {
if let &Some(shader) = shader {
gl::AttachShader(program, shader);
}
}
gl::LinkProgram(program);
rustic_gl::raw::get_link_status(program)
.unwrap();
for shader in shaders {
if let &Some(shader) = shader {
gl::DetachShader(program, shader);
}
}
program
}