[tint] Add read-only storage texture builtins
Most backends "just worked", except HLSL which uses a different
register space for read-only textures.
Bug: tint:2007
Change-Id: I7925b3bdf7389e3b429e0a570e988adde0443452
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/146961
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
diff --git a/test/tint/builtins/gen/literal/textureLoad/9cf7df.wgsl.expected.wgsl b/test/tint/builtins/gen/literal/textureLoad/9cf7df.wgsl.expected.wgsl
new file mode 100644
index 0000000..1e3d492
--- /dev/null
+++ b/test/tint/builtins/gen/literal/textureLoad/9cf7df.wgsl.expected.wgsl
@@ -0,0 +1,26 @@
+enable chromium_experimental_read_write_storage_texture;
+
+@group(1) @binding(0) var arg_0 : texture_storage_2d_array<rg32sint, read>;
+
+fn textureLoad_9cf7df() {
+ var res : vec4<i32> = textureLoad(arg_0, vec2<i32>(1i), 1u);
+ prevent_dce = res;
+}
+
+@group(2) @binding(0) var<storage, read_write> prevent_dce : vec4<i32>;
+
+@vertex
+fn vertex_main() -> @builtin(position) vec4<f32> {
+ textureLoad_9cf7df();
+ return vec4<f32>();
+}
+
+@fragment
+fn fragment_main() {
+ textureLoad_9cf7df();
+}
+
+@compute @workgroup_size(1)
+fn compute_main() {
+ textureLoad_9cf7df();
+}
