diff options
Diffstat (limited to 'glow/src/program.rs')
-rw-r--r-- | glow/src/program.rs | 133 |
1 files changed, 0 insertions, 133 deletions
diff --git a/glow/src/program.rs b/glow/src/program.rs deleted file mode 100644 index 95437fcd..00000000 --- a/glow/src/program.rs +++ /dev/null @@ -1,133 +0,0 @@ -use glow::HasContext; - -/// The [`Version`] of a `Program`. -pub struct Version { - vertex: String, - fragment: String, -} - -impl Version { - pub fn new(gl: &glow::Context) -> Version { - let version = gl.version(); - - let (vertex, fragment) = match ( - version.major, - version.minor, - version.is_embedded, - ) { - // OpenGL 3.0+ - (3, 0 | 1 | 2, false) => ( - format!("#version 1{}0\n#extension GL_ARB_explicit_attrib_location : enable", version.minor + 3), - format!( - "#version 1{}0\n#extension GL_ARB_explicit_attrib_location : enable\n#define HIGHER_THAN_300 1", - version.minor + 3 - ), - ), - // OpenGL 3.3+ - (3 | 4, _, false) => ( - format!("#version {}{}0\n#extension GL_ARB_explicit_attrib_location : enable", version.major, version.minor), - format!( - "#version {}{}0\n#extension GL_ARB_explicit_attrib_location : enable\n#define HIGHER_THAN_300 1", - version.major, version.minor - ), - ), - // OpenGL ES 3.0+ - (3, _, true) => ( - format!("#version 3{}0 es", version.minor), - format!( - "#version 3{}0 es\n#define HIGHER_THAN_300 1", - version.minor - ), - ), - // OpenGL ES 2.0+ - (2, _, true) => ( - String::from( - "#version 100\n#define in attribute\n#define out varying", - ), - String::from("#version 100\n#define in varying"), - ), - // OpenGL 2.1 - (2, _, false) => ( - String::from( - "#version 120\n#define in attribute\n#define out varying", - ), - String::from("#version 120\n#define in varying"), - ), - // OpenGL 1.1+ - _ => panic!("Incompatible context version: {version:?}"), - }; - - log::info!("Shader directive: {}", vertex.lines().next().unwrap()); - - Version { vertex, fragment } - } -} - -pub struct Shader(<glow::Context as HasContext>::Shader); - -impl Shader { - fn compile(gl: &glow::Context, stage: u32, content: &str) -> Shader { - unsafe { - let shader = gl.create_shader(stage).expect("Cannot create shader"); - - gl.shader_source(shader, content); - gl.compile_shader(shader); - - if !gl.get_shader_compile_status(shader) { - panic!("{}", gl.get_shader_info_log(shader)); - } - - Shader(shader) - } - } - - /// Creates a vertex [`Shader`]. - pub fn vertex( - gl: &glow::Context, - version: &Version, - content: &'static str, - ) -> Self { - let content = format!("{}\n{}", version.vertex, content); - - Shader::compile(gl, glow::VERTEX_SHADER, &content) - } - - /// Creates a fragment [`Shader`]. - pub fn fragment( - gl: &glow::Context, - version: &Version, - content: &'static str, - ) -> Self { - let content = format!("{}\n{}", version.fragment, content); - - Shader::compile(gl, glow::FRAGMENT_SHADER, &content) - } -} - -pub unsafe fn create( - gl: &glow::Context, - shaders: &[Shader], - attributes: &[(u32, &str)], -) -> <glow::Context as HasContext>::Program { - let program = gl.create_program().expect("Cannot create program"); - - for shader in shaders { - gl.attach_shader(program, shader.0); - } - - for (i, name) in attributes { - gl.bind_attrib_location(program, *i, name); - } - - gl.link_program(program); - if !gl.get_program_link_status(program) { - panic!("{}", gl.get_program_info_log(program)); - } - - for shader in shaders { - gl.detach_shader(program, shader.0); - gl.delete_shader(shader.0); - } - - program -} |