From 6aaedb813fa11ba0679c3051bc2eb28646b9506c Mon Sep 17 00:00:00 2001
From: 3gg <3gg@shellblade.net>
Date: Sat, 30 Aug 2025 16:53:58 -0700
Subject: Update to SDL3

---
 .../SDL-3.2.20/test/testgpu/build-shaders.sh       | 94 ++++++++++++++++++++++
 1 file changed, 94 insertions(+)
 create mode 100755 src/contrib/SDL-3.2.20/test/testgpu/build-shaders.sh

(limited to 'src/contrib/SDL-3.2.20/test/testgpu/build-shaders.sh')

diff --git a/src/contrib/SDL-3.2.20/test/testgpu/build-shaders.sh b/src/contrib/SDL-3.2.20/test/testgpu/build-shaders.sh
new file mode 100755
index 0000000..d76f9d6
--- /dev/null
+++ b/src/contrib/SDL-3.2.20/test/testgpu/build-shaders.sh
@@ -0,0 +1,94 @@
+# Rebuilds the shaders needed for the GPU cube test.
+# For SPIR-V: requires glslangValidator and spirv-cross, which can be obtained from the LunarG Vulkan SDK.
+# For DXBC compilation: requires FXC, which is part of the Windows SDK.
+# For DXIL compilation, requires DXC, which can be obtained via the Windows SDK or via here: https://github.com/microsoft/DirectXShaderCompiler/releases
+# For Metal compilation: requires Xcode
+
+# On Windows, run this via Git Bash.
+# To add the Windows SDK (FXC/DXC) to your path, run the command:
+#   `export PATH=$PATH:/c/Program\ Files\ \(x86\)/Windows\ Kits/10/bin/x.x.x.x/x64/`
+
+export MSYS_NO_PATHCONV=1
+
+# SPIR-V
+glslangValidator cube.glsl -V -S vert -o cube.vert.spv --quiet -DVERTEX
+glslangValidator cube.glsl -V -S frag -o cube.frag.spv --quiet
+xxd -i cube.vert.spv | perl -w -p -e 's/\Aunsigned /const unsigned /;' > cube.vert.h
+xxd -i cube.frag.spv | perl -w -p -e 's/\Aunsigned /const unsigned /;' > cube.frag.h
+cat cube.vert.h cube.frag.h > testgpu_spirv.h
+rm -f cube.vert.h cube.frag.h cube.vert.spv cube.frag.spv
+
+# Platform-specific compilation
+if [[ "$OSTYPE" == "darwin"* ]]; then
+
+    # FIXME: Needs to be updated!
+
+    # Xcode
+    generate_shaders()
+    {
+        fileplatform=$1
+        compileplatform=$2
+        sdkplatform=$3
+        minversion=$4
+
+        xcrun -sdk $sdkplatform metal -c -std=$compileplatform-metal1.1 -m$sdkplatform-version-min=$minversion -Wall -O3 -DVERTEX=1 -o ./cube.vert.air ./cube.metal || exit $?
+        xcrun -sdk $sdkplatform metal -c -std=$compileplatform-metal1.1 -m$sdkplatform-version-min=$minversion -Wall -O3 -o ./cube.frag.air ./cube.metal || exit $?
+
+        xcrun -sdk $sdkplatform metallib -o cube.vert.metallib cube.vert.air || exit $?
+        xcrun -sdk $sdkplatform metallib -o cube.frag.metallib cube.frag.air || exit $?
+
+        xxd -i cube.vert.metallib | perl -w -p -e 's/\Aunsigned /const unsigned /;' >./cube.vert_$fileplatform.h
+        xxd -i cube.frag.metallib | perl -w -p -e 's/\Aunsigned /const unsigned /;' >./cube.frag_$fileplatform.h
+
+        rm -f cube.vert.air cube.vert.metallib
+        rm -f cube.frag.air cube.frag.metallib
+    }
+
+    generate_shaders macos macos macosx 10.11
+    generate_shaders ios ios iphoneos 8.0
+    generate_shaders iphonesimulator ios iphonesimulator 8.0
+    generate_shaders tvos ios appletvos 9.0
+    generate_shaders tvsimulator ios appletvsimulator 9.0
+
+    # Bundle together one mega-header
+    rm -f testgpu_metallib.h
+    echo "#if defined(SDL_PLATFORM_IOS)" >> testgpu_metallib.h
+        echo "#if TARGET_OS_SIMULATOR" >> testgpu_metallib.h
+            cat cube.vert_iphonesimulator.h >> testgpu_metallib.h
+            cat cube.frag_iphonesimulator.h >> testgpu_metallib.h
+        echo "#else" >> testgpu_metallib.h
+            cat cube.vert_ios.h >> testgpu_metallib.h
+            cat cube.frag_ios.h >> testgpu_metallib.h
+        echo "#endif" >> testgpu_metallib.h
+    echo "#elif defined(SDL_PLATFORM_TVOS)" >> testgpu_metallib.h
+        echo "#if TARGET_OS_SIMULATOR" >> testgpu_metallib.h
+            cat cube.vert_tvsimulator.h >> testgpu_metallib.h
+            cat cube.frag_tvsimulator.h >> testgpu_metallib.h
+        echo "#else" >> testgpu_metallib.h
+            cat cube.vert_tvos.h >> testgpu_metallib.h
+            cat cube.frag_tvos.h >> testgpu_metallib.h
+        echo "#endif" >> testgpu_metallib.h
+    echo "#else" >> testgpu_metallib.h
+        cat cube.vert_macos.h >> testgpu_metallib.h
+        cat cube.frag_macos.h >> testgpu_metallib.h
+    echo "#endif" >> testgpu_metallib.h
+
+    # Clean up
+    rm -f cube.vert_macos.h cube.frag_macos.h
+    rm -f cube.vert_iphonesimulator.h cube.frag_iphonesimulator.h
+    rm -f cube.vert_tvsimulator.h cube.frag_tvsimulator.h
+    rm -f cube.vert_ios.h cube.frag_ios.h
+    rm -f cube.vert_tvos.h cube.frag_tvos.h
+
+elif [[ "$OSTYPE" == "cygwin"* ]] || [[ "$OSTYPE" == "msys"* ]]; then
+
+    # DXC
+    dxc cube.hlsl /E VSMain /T vs_6_0 /Fh cube.vert.h
+    dxc cube.hlsl /E PSMain /T ps_6_0 /Fh cube.frag.h
+
+    cat cube.vert.h | perl -w -p -e 's/BYTE/unsigned char/;s/g_VSMain/D3D12_CubeVert/;' > cube.vert.temp.h
+    cat cube.frag.h | perl -w -p -e 's/BYTE/unsigned char/;s/g_PSMain/D3D12_CubeFrag/;' > cube.frag.temp.h
+    cat cube.vert.temp.h cube.frag.temp.h > testgpu_dxil.h
+    rm -f cube.vert.h cube.frag.h cube.vert.temp.h cube.frag.temp.h
+
+fi
-- 
cgit v1.2.3