feat(opengl-bindings): add SRGB texture support

1 files changed, 21 insertions, 6 deletions

diff --git a/opengl-bindings/src/texture.rs b/opengl-bindings/src/texture.rs
index 2683772..c5d43c9 100644
--- a/opengl-bindings/src/texture.rs
+++ b/opengl-bindings/src/texture.rs
@@ -48,6 +48,7 @@ impl Texture
         size: &Dimens<u32>,
         data: &[u8],
         pixel_data_format: PixelDataFormat,
+        color_space: ColorSpace,
     ) -> Result<(), GenerateError>
     {
         let size = Dimens::<crate::sys::types::GLsizei> {
@@ -65,7 +66,7 @@ impl Texture
             })?,
         };
 
-        self.alloc_image(current_context, pixel_data_format, &size, data);
+        self.alloc_image(current_context, pixel_data_format, color_space, &size, data);
 
         unsafe {
             current_context.fns().GenerateTextureMipmap(self.texture);
@@ -148,6 +149,7 @@ impl Texture
         &self,
         current_context: &CurrentContextWithFns<'_>,
         pixel_data_format: PixelDataFormat,
+        color_space: ColorSpace,
         size: &Dimens<crate::sys::types::GLsizei>,
         data: &[u8],
     )
@@ -156,7 +158,7 @@ impl Texture
             current_context.fns().TextureStorage2D(
                 self.texture,
                 1,
-                pixel_data_format.to_sized_internal_format(),
+                pixel_data_format.to_sized_internal_format(color_space),
                 size.width,
                 size.height,
             );
@@ -212,11 +214,16 @@ pub enum PixelDataFormat
 
 impl PixelDataFormat
 {
-    fn to_sized_internal_format(self) -> crate::sys::types::GLenum
+    fn to_sized_internal_format(
+        self,
+        color_space: ColorSpace,
+    ) -> crate::sys::types::GLenum
     {
-        match self {
-            Self::Rgb8 => crate::sys::RGB8,
-            Self::Rgba8 => crate::sys::RGBA8,
+        match (self, color_space) {
+            (Self::Rgb8, ColorSpace::Linear) => crate::sys::RGB8,
+            (Self::Rgba8, ColorSpace::Linear) => crate::sys::RGBA8,
+            (Self::Rgb8, ColorSpace::Srgb) => crate::sys::SRGB8,
+            (Self::Rgba8, ColorSpace::Srgb) => crate::sys::SRGB8_ALPHA8,
         }
     }
 
@@ -229,6 +236,14 @@ impl PixelDataFormat
     }
 }
 
+#[derive(Debug, Clone, Copy)]
+#[non_exhaustive]
+pub enum ColorSpace
+{
+    Linear,
+    Srgb,
+}
+
 /// Error generating texture.
 #[derive(Debug, thiserror::Error)]
 pub enum GenerateError