rhi: Add support for arrays of combined image samplers

Introduces a new QRhiShaderResourceBinding function that takes an array
of texture-sampler pairs. The existing function is also available and is
equivalent to calling the array-based version with array size 1.

It is important to note that for Metal one needs MSL 2.0 for array of
textures, so qsb needs --msl 20 instead of --msl 12 for such shaders.

Comes with an autotest, and also updates all .qsb files for said test
with the latest shadertools.

Task-number: QTBUG-82624
Change-Id: Ibc1973aae826836f16d842c41d6c8403fd7ff876
Reviewed-by: Christian Strømme <christian.stromme@qt.io>

1 files changed, 7 insertions, 4 deletions

diff --git a/src/gui/rhi/qrhimetal_p_p.h b/src/gui/rhi/qrhimetal_p_p.h
index a5af5611a6..cb4b777d88 100644
--- a/src/gui/rhi/qrhimetal_p_p.h
+++ b/src/gui/rhi/qrhimetal_p_p.h
@@ -197,10 +197,13 @@ struct QMetalShaderResourceBindings : public QRhiShaderResourceBindings
         uint generation;
     };
     struct BoundSampledTextureData {
-        quint64 texId;
-        uint texGeneration;
-        quint64 samplerId;
-        uint samplerGeneration;
+        int count;
+        struct {
+            quint64 texId;
+            uint texGeneration;
+            quint64 samplerId;
+            uint samplerGeneration;
+        } d[QRhiShaderResourceBinding::Data::MAX_TEX_SAMPLER_ARRAY_SIZE];
     };
     struct BoundStorageImageData {
         quint64 id;