Add test for pure initializer gl_FragDepth.

Tests that the builtin is considered active.

6 files changed, 117 insertions, 0 deletions

diff --git a/reference/shaders-hlsl-no-opt/asm/frag/only-initializer-frag-depth.asm.frag b/reference/shaders-hlsl-no-opt/asm/frag/only-initializer-frag-depth.asm.frag
new file mode 100644
index 00000000..dcbe5d13
--- /dev/null
+++ b/reference/shaders-hlsl-no-opt/asm/frag/only-initializer-frag-depth.asm.frag
@@ -0,0 +1,17 @@
+static float gl_FragDepth = 0.5f;
+struct SPIRV_Cross_Output
+{
+    float gl_FragDepth : SV_Depth;
+};
+
+void frag_main()
+{
+}
+
+SPIRV_Cross_Output main()
+{
+    frag_main();
+    SPIRV_Cross_Output stage_output;
+    stage_output.gl_FragDepth = gl_FragDepth;
+    return stage_output;
+}
diff --git a/reference/shaders-msl-no-opt/asm/frag/only-initializer-frag-depth.asm.frag b/reference/shaders-msl-no-opt/asm/frag/only-initializer-frag-depth.asm.frag
new file mode 100644
index 00000000..3f552ebb
--- /dev/null
+++ b/reference/shaders-msl-no-opt/asm/frag/only-initializer-frag-depth.asm.frag
@@ -0,0 +1,17 @@
+#include <metal_stdlib>
+#include <simd/simd.h>
+
+using namespace metal;
+
+struct main0_out
+{
+    float gl_FragDepth [[depth(any)]];
+};
+
+fragment main0_out main0()
+{
+    main0_out out = {};
+    out.gl_FragDepth = 0.5;
+    return out;
+}
+
diff --git a/reference/shaders-no-opt/asm/frag/only-initializer-frag-depth.asm.frag b/reference/shaders-no-opt/asm/frag/only-initializer-frag-depth.asm.frag
new file mode 100644
index 00000000..1041f711
--- /dev/null
+++ b/reference/shaders-no-opt/asm/frag/only-initializer-frag-depth.asm.frag
@@ -0,0 +1,8 @@
+#version 450
+
+const float _3_init = 0.5;
+void main()
+{
+    gl_FragDepth = _3_init;
+}
+
diff --git a/shaders-hlsl-no-opt/asm/frag/only-initializer-frag-depth.asm.frag b/shaders-hlsl-no-opt/asm/frag/only-initializer-frag-depth.asm.frag
new file mode 100644
index 00000000..17aab1d8
--- /dev/null
+++ b/shaders-hlsl-no-opt/asm/frag/only-initializer-frag-depth.asm.frag
@@ -0,0 +1,25 @@
+; SPIR-V
+; Version: 1.0
+; Generator: Khronos Glslang Reference Front End; 10
+; Bound: 10
+; Schema: 0
+               OpCapability Shader
+          %1 = OpExtInstImport "GLSL.std.450"
+               OpMemoryModel Logical GLSL450
+               OpEntryPoint Fragment %main "main" %gl_FragDepth
+               OpExecutionMode %main OriginUpperLeft
+               OpExecutionMode %main DepthReplacing
+               OpSource GLSL 450
+               OpName %main "main"
+               OpName %gl_FragDepth "gl_FragDepth"
+               OpDecorate %gl_FragDepth BuiltIn FragDepth
+       %void = OpTypeVoid
+          %3 = OpTypeFunction %void
+      %float = OpTypeFloat 32
+%_ptr_Output_float = OpTypePointer Output %float
+  %float_0_5 = OpConstant %float 0.5
+%gl_FragDepth = OpVariable %_ptr_Output_float Output %float_0_5
+       %main = OpFunction %void None %3
+          %5 = OpLabel
+               OpReturn
+               OpFunctionEnd
diff --git a/shaders-msl-no-opt/asm/frag/only-initializer-frag-depth.asm.frag b/shaders-msl-no-opt/asm/frag/only-initializer-frag-depth.asm.frag
new file mode 100644
index 00000000..17aab1d8
--- /dev/null
+++ b/shaders-msl-no-opt/asm/frag/only-initializer-frag-depth.asm.frag
@@ -0,0 +1,25 @@
+; SPIR-V
+; Version: 1.0
+; Generator: Khronos Glslang Reference Front End; 10
+; Bound: 10
+; Schema: 0
+               OpCapability Shader
+          %1 = OpExtInstImport "GLSL.std.450"
+               OpMemoryModel Logical GLSL450
+               OpEntryPoint Fragment %main "main" %gl_FragDepth
+               OpExecutionMode %main OriginUpperLeft
+               OpExecutionMode %main DepthReplacing
+               OpSource GLSL 450
+               OpName %main "main"
+               OpName %gl_FragDepth "gl_FragDepth"
+               OpDecorate %gl_FragDepth BuiltIn FragDepth
+       %void = OpTypeVoid
+          %3 = OpTypeFunction %void
+      %float = OpTypeFloat 32
+%_ptr_Output_float = OpTypePointer Output %float
+  %float_0_5 = OpConstant %float 0.5
+%gl_FragDepth = OpVariable %_ptr_Output_float Output %float_0_5
+       %main = OpFunction %void None %3
+          %5 = OpLabel
+               OpReturn
+               OpFunctionEnd
diff --git a/shaders-no-opt/asm/frag/only-initializer-frag-depth.asm.frag b/shaders-no-opt/asm/frag/only-initializer-frag-depth.asm.frag
new file mode 100644
index 00000000..17aab1d8
--- /dev/null
+++ b/shaders-no-opt/asm/frag/only-initializer-frag-depth.asm.frag
@@ -0,0 +1,25 @@
+; SPIR-V
+; Version: 1.0
+; Generator: Khronos Glslang Reference Front End; 10
+; Bound: 10
+; Schema: 0
+               OpCapability Shader
+          %1 = OpExtInstImport "GLSL.std.450"
+               OpMemoryModel Logical GLSL450
+               OpEntryPoint Fragment %main "main" %gl_FragDepth
+               OpExecutionMode %main OriginUpperLeft
+               OpExecutionMode %main DepthReplacing
+               OpSource GLSL 450
+               OpName %main "main"
+               OpName %gl_FragDepth "gl_FragDepth"
+               OpDecorate %gl_FragDepth BuiltIn FragDepth
+       %void = OpTypeVoid
+          %3 = OpTypeFunction %void
+      %float = OpTypeFloat 32
+%_ptr_Output_float = OpTypePointer Output %float
+  %float_0_5 = OpConstant %float 0.5
+%gl_FragDepth = OpVariable %_ptr_Output_float Output %float_0_5
+       %main = OpFunction %void None %3
+          %5 = OpLabel
+               OpReturn
+               OpFunctionEnd