Add bgra8 format (#6163)

* add brga8 format

* add tests

* minor fixes

* cleanup

* maybe fix broken quad control test

* add missing xslang flag on test

---------

Co-authored-by: Yong He <yonghe@outlook.com>

3 files changed, 35 insertions, 1 deletions

diff --git a/tests/diagnostics/image-format-unsupported-by-backend.slang b/tests/diagnostics/image-format-unsupported-by-backend.slang
new file mode 100644
index 000000000..270c2b63e
--- /dev/null
+++ b/tests/diagnostics/image-format-unsupported-by-backend.slang
@@ -0,0 +1,19 @@
+//DIAGNOSTIC_TEST:SIMPLE(filecheck=CHECK_SPIRV): -target spirv
+//DIAGNOSTIC_TEST:SIMPLE(filecheck=CHECK_GLSL): -target glsl
+//DIAGNOSTIC_TEST:SIMPLE(filecheck=CHECK_WGSL): -target wgsl
+
+// CHECK_SPIRV: warning 31105{{.*}}bgra8
+// CHECK_GLSL: warning 31105{{.*}}bgra8
+[format("bgra8")]
+RWTexture2D<float4> outputTexture;
+
+// CHECK_WGSL: warning 31105{{.*}}rg8
+[format("rg8")]
+RWTexture2D<float4> outputTexture2;
+
+[numthreads(8, 8, 1)]
+void main(uint3 threadID : SV_DispatchThreadID)
+{
+    outputTexture[threadID.xy] = float4(1.0, 1.0, 1.0, 1.0);
+    outputTexture2[threadID.xy] = float4(1.0, 1.0, 1.0, 1.0);
+}
diff --git a/tests/hlsl-intrinsic/quad-control/quad-control-comp-functionality.slang b/tests/hlsl-intrinsic/quad-control/quad-control-comp-functionality.slang
index c8f82772d..01771f7a4 100644
--- a/tests/hlsl-intrinsic/quad-control/quad-control-comp-functionality.slang
+++ b/tests/hlsl-intrinsic/quad-control/quad-control-comp-functionality.slang
@@ -1,6 +1,6 @@
 //TEST(compute):COMPARE_COMPUTE_EX:-vk -compute -shaderobj -emit-spirv-directly
 //TEST(compute):COMPARE_COMPUTE_EX:-slang -compute -profile cs_6_7 -dx12 -use-dxil -shaderobj -render-feature hardware-device
-//TEST(compute):COMPARE_COMPUTE_EX:-metal -compute -shaderobj 
+//TEST(compute):COMPARE_COMPUTE_EX:-metal -compute -shaderobj -xslang -DMETAL
 
 //TEST_INPUT:ubuffer(data=[0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0], stride=4):out,name outputBuffer
 RWStructuredBuffer<uint> outputBuffer;
@@ -8,7 +8,11 @@ RWStructuredBuffer<uint> outputBuffer;
 [numthreads(16, 1, 1)]
 void computeMain(uint3 dispatchThreadID : SV_DispatchThreadID)
 {
+#if !defined(METAL)
+    uint index = WaveGetLaneIndex();
+#else
     uint index = dispatchThreadID.x;
+#endif
 
     if (index < 4)
     {
diff --git a/tests/wgsl/texture-storage.slang b/tests/wgsl/texture-storage.slang
index 1109dbfb1..62c8d13c8 100644
--- a/tests/wgsl/texture-storage.slang
+++ b/tests/wgsl/texture-storage.slang
@@ -28,6 +28,16 @@ RWStructuredBuffer<int> outputBuffer;
 [format("rgba8")] RWTexture3D<float4>      w3D_f32v4;
 [format("rgba8")] RWTexture2DArray<float4> w2DArray_f32v4;
 
+//TEST_INPUT: RWTexture1D(format=B8G8R8A8_UNORM, size=4, content = zero):name w1D_f32_bgra_v4
+//TEST_INPUT: RWTexture2D(format=B8G8R8A8_UNORM, size=4, content = zero):name w2D_f32_bgra_v4
+//TEST_INPUT: RWTexture3D(format=B8G8R8A8_UNORM, size=4, content = zero):name w3D_f32_bgra_v4
+//TEST_INPUT: RWTexture2D(format=B8G8R8A8_UNORM, size=4, content = zero, arrayLength=2):name w2DArray_f32_bgra_v4
+// WGSL: var w1D_f32_bgra_v4{{[^:]*}}: texture_storage_1d<bgra8unorm, read_write>
+[format("bgra8")] RWTexture1D<float4>      w1D_f32_bgra_v4;
+[format("bgra8")] RWTexture2D<float4>      w2D_f32_bgra_v4;
+[format("bgra8")] RWTexture3D<float4>      w3D_f32_bgra_v4;
+[format("bgra8")] RWTexture2DArray<float4> w2DArray_f32_bgra_v4;
+
 // i32 types
 
 //TEST_INPUT: RWTexture1D(format=R32G32_SINT, size=4, content = zero):name w1D_i32v2
@@ -127,6 +137,7 @@ void fragMain()
     bool result = true
         && TEST_textureStorage_StoreLoad<float2>(w1D_f32v2, w2D_f32v2, w3D_f32v2, w2DArray_f32v2)
         && TEST_textureStorage_StoreLoad<float4>(w1D_f32v4, w2D_f32v4, w3D_f32v4, w2DArray_f32v4)
+        && TEST_textureStorage_StoreLoad<float4>(w1D_f32_bgra_v4, w2D_f32_bgra_v4, w3D_f32_bgra_v4, w2DArray_f32_bgra_v4)
         && TEST_textureStorage_StoreLoad<int32_t2>(w1D_i32v2, w2D_i32v2, w3D_i32v2, w2DArray_i32v2)
         && TEST_textureStorage_StoreLoad<int32_t4>(w1D_i32v4, w2D_i32v4, w3D_i32v4, w2DArray_i32v4)
         && TEST_textureStorage_StoreLoad<uint32_t2>(w1D_u32v2, w2D_u32v2, w3D_u32v2, w2DArray_u32v2)