BC7 encoder (#86)

Author: RunDevelopment

README.md

@@ -26,7 +26,7 @@ This library supports a total of over 70 formats for decoding, including:
 - Over 30 uncompressed formats. E.g. `R8G8B8A8_UNORM`, `R9G9B9E5_SHAREDEXP`, `R32G32B32_FLOAT`.
 - Many YUV formats. E.g. `AYUV`, `Y416`, `YUY2`, `NV12`.
 
-Most formats support encoding. Notable exceptions are the ASTC formats ([#23](https://github.com/image-rs/image-dds/issues/23)), BC7 ([#20](https://github.com/image-rs/image-dds/issues/20)), and BC6 (currently not planned).
+Most formats support encoding. Notable exceptions are the ASTC formats ([#23](https://github.com/image-rs/image-dds/issues/23)) and BC6 (currently not planned).
 
 For a full list of all support formats and their capabilities, see [this document](./supported-formats.md).
 

benches/encode.rs

@@ -167,7 +167,7 @@ pub fn encode_compressed(c: &mut Criterion) {
     use Channels::*;
 
     // images
-    let random: Image<f32> = Image::random(Size::new(128, 128), Rgba);
+    let random_rgba: Image<f32> = Image::random(Size::new(128, 128), Rgba);
     let random_rgb: Image<f32> = Image::random(Size::new(128, 128), Rgb);
     let random_tiny: Image<f32> = Image::random(Size::new(16, 16), Rgba);
 
@@ -208,6 +208,13 @@ pub fn encode_compressed(c: &mut Criterion) {
     bench_encoder(c, Format::BC4_UNORM, high, &random_rgb);
     bench_encoder(c, Format::BC4_UNORM, dither, &random_rgb);
     // bench_encoder(c, Format::BC4_UNORM, unreasonable, &random_tiny);
+
+    bench_encoder(c, Format::BC7_UNORM, fast, &random_rgb);
+    bench_encoder(c, Format::BC7_UNORM, normal, &random_rgb);
+    bench_encoder(c, Format::BC7_UNORM, high, &random_rgb);
+    bench_encoder(c, Format::BC7_UNORM, fast, &random_rgba);
+    bench_encoder(c, Format::BC7_UNORM, normal, &random_rgba);
+    bench_encoder(c, Format::BC7_UNORM, high, &random_rgba);
 }
 
 pub fn encode_parallel(c: &mut Criterion) {