119 lines
2.7 KiB
Rust
119 lines
2.7 KiB
Rust
use gl::types::{GLenum, GLuint};
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use librashader_reflect::back::cross::GlVersion;
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pub trait RingBuffer<T> {
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fn current(&self) -> &T;
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fn current_mut(&mut self) -> &mut T;
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fn next(&mut self);
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}
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impl<T, const SIZE: usize> RingBuffer<T> for InlineRingBuffer<T, SIZE> {
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fn current(&self) -> &T {
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&self.items[self.index]
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}
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fn current_mut(&mut self) -> &mut T {
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&mut self.items[self.index]
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}
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fn next(&mut self) {
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self.index += 1;
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if self.index >= SIZE {
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self.index = 0
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}
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}
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}
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pub struct InlineRingBuffer<T, const SIZE: usize> {
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items: [T; SIZE],
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index: usize,
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}
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impl<T, const SIZE: usize> InlineRingBuffer<T, SIZE>
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where
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T: Copy,
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T: Default,
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{
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pub fn new() -> Self {
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Self {
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items: [T::default(); SIZE],
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index: 0,
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}
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}
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pub fn items(&self) -> &[T; SIZE] {
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&self.items
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}
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pub fn items_mut(&mut self) -> &mut [T; SIZE] {
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&mut self.items
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}
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}
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pub unsafe fn gl_compile_shader(stage: GLenum, source: &str) -> GLuint {
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let shader = gl::CreateShader(stage);
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gl::ShaderSource(
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shader,
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1,
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&source.as_bytes().as_ptr().cast(),
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std::ptr::null(),
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);
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gl::CompileShader(shader);
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let mut compile_status = 0;
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gl::GetShaderiv(shader, gl::COMPILE_STATUS, &mut compile_status);
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if compile_status == 0 {
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panic!("failed to compile")
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}
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shader
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}
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pub fn gl_get_version() -> GlVersion {
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let mut maj_ver = 0;
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let mut min_ver = 0;
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unsafe {
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gl::GetIntegerv(gl::MAJOR_VERSION, &mut maj_ver);
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gl::GetIntegerv(gl::MINOR_VERSION, &mut min_ver);
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}
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match maj_ver {
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3 => match min_ver {
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3 => GlVersion::V3_30,
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2 => GlVersion::V1_50,
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1 => GlVersion::V1_40,
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0 => GlVersion::V1_30,
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_ => GlVersion::V1_50,
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},
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4 => match min_ver {
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6 => GlVersion::V4_60,
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5 => GlVersion::V4_50,
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4 => GlVersion::V4_40,
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3 => GlVersion::V4_30,
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2 => GlVersion::V4_20,
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1 => GlVersion::V4_10,
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0 => GlVersion::V4_00,
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_ => GlVersion::V1_50,
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},
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_ => GlVersion::V1_50,
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}
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}
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pub fn gl_u16_to_version(version: u16) -> GlVersion {
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match version {
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0 => gl_get_version(),
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300 => GlVersion::V1_30,
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310 => GlVersion::V1_40,
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320 => GlVersion::V1_50,
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330 => GlVersion::V3_30,
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400 => GlVersion::V4_00,
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410 => GlVersion::V4_10,
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420 => GlVersion::V4_20,
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430 => GlVersion::V4_30,
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440 => GlVersion::V4_40,
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450 => GlVersion::V4_50,
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460 => GlVersion::V4_60,
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_ => GlVersion::V1_50,
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}
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}
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