[gles] fix: Set FORCE_POINT_SIZE if it is vertex shader with mesh consist of point list (#3440)

CHANGELOG.md

@@ -69,6 +69,10 @@ Bottom level categories:
 
 - Fix DXC validation issues when using a custom `dxil_path`. By @Elabajaba in [#3434](https://github.com/gfx-rs/wgpu/pull/3434)
 
+#### GLES
+
+- [gles] fix: Set FORCE_POINT_SIZE if it is vertex shader with mesh consist of point list. By @REASY in [3440](https://github.com/gfx-rs/wgpu/pull/3440)
+
 #### General
 
 - `copyTextureToTexture` src/dst aspects must both refer to all aspects of src/dst format. By @teoxoy in [#3431](https://github.com/gfx-rs/wgpu/pull/3431)

wgpu-hal/src/gles/device.rs

@@ -952,6 +952,9 @@ impl crate::Device<super::Api> for super::Device {
                 .private_caps
                 .contains(super::PrivateCapabilities::SHADER_TEXTURE_SHADOW_LOD),
         );
+        // We always force point size to be written and it will be ignored by the driver if it's not a point list primitive.
+        // https://github.com/gfx-rs/wgpu/pull/3440/files#r1095726950
+        writer_flags.set(glsl::WriterFlags::FORCE_POINT_SIZE, true);
         let mut binding_map = glsl::BindingMap::default();
 
         for (group_index, bg_layout) in desc.bind_group_layouts.iter().enumerate() {