Support GL_EXT_fragment_shader_barycentric (#2704)

* Support GL_EXT_fragment_shader_barycentric

* Support pervertex  with GL_EXT_fragment_shader_barycentric

7 files changed, 73 insertions, 5 deletions

diff --git a/tests/cross-compile/barycentrics-nv.slang b/tests/cross-compile/barycentrics-nv.slang
new file mode 100644
index 000000000..fb0272679
--- /dev/null
+++ b/tests/cross-compile/barycentrics-nv.slang
@@ -0,0 +1,6 @@
+//TEST:CROSS_COMPILE: -target spirv-assembly -capability GL_NV_fragment_shader_barycentric -entry main -stage fragment
+
+float4 main(float3 bary : SV_Barycentrics) : SV_Target
+{
+    return float4(bary, 0);
+}
diff --git a/tests/cross-compile/barycentrics-nv.slang.glsl b/tests/cross-compile/barycentrics-nv.slang.glsl
new file mode 100644
index 000000000..ca37a14e8
--- /dev/null
+++ b/tests/cross-compile/barycentrics-nv.slang.glsl
@@ -0,0 +1,12 @@
+#version 450
+
+#extension GL_NV_fragment_shader_barycentric : enable
+
+layout(location = 0)
+out vec4 _S1;
+
+void main()
+{
+    _S1 = vec4(gl_BaryCoordNV, float(0));
+    return;
+}
diff --git a/tests/cross-compile/barycentrics.slang.glsl b/tests/cross-compile/barycentrics.slang.glsl
index ca37a14e8..963316b53 100644
--- a/tests/cross-compile/barycentrics.slang.glsl
+++ b/tests/cross-compile/barycentrics.slang.glsl
@@ -1,12 +1,12 @@
 #version 450
 
-#extension GL_NV_fragment_shader_barycentric : enable
+#extension GL_EXT_fragment_shader_barycentric : enable
 
 layout(location = 0)
 out vec4 _S1;
 
 void main()
 {
-    _S1 = vec4(gl_BaryCoordNV, float(0));
+    _S1 = vec4(gl_BaryCoordEXT, float(0));
     return;
 }
diff --git a/tests/pipeline/rasterization/get-attribute-at-vertex-nv.slang b/tests/pipeline/rasterization/get-attribute-at-vertex-nv.slang
new file mode 100644
index 000000000..d7bdbc69c
--- /dev/null
+++ b/tests/pipeline/rasterization/get-attribute-at-vertex-nv.slang
@@ -0,0 +1,17 @@
+// get-attribute-at-vertex.slang
+
+// Basic test for `GetAttributeAtVertex` function
+
+//TEST:CROSS_COMPILE:-target dxil -capability GL_NV_fragment_shader_barycentric -entry main -stage fragment -profile sm_6_1
+//TEST:CROSS_COMPILE:-target spirv -capability GL_NV_fragment_shader_barycentric -entry main -stage fragment -profile glsl_450
+
+[shader("fragment")]
+void main(
+    pervertex float4 color : COLOR,
+    float3 bary : SV_Barycentrics,
+    out float4 result : SV_Target)
+{
+    result = bary.x * GetAttributeAtVertex(color, 0)
+           + bary.y * GetAttributeAtVertex(color, 1)
+           + bary.z * GetAttributeAtVertex(color, 2);
+}
diff --git a/tests/pipeline/rasterization/get-attribute-at-vertex-nv.slang.glsl b/tests/pipeline/rasterization/get-attribute-at-vertex-nv.slang.glsl
new file mode 100644
index 000000000..1da5f4f8a
--- /dev/null
+++ b/tests/pipeline/rasterization/get-attribute-at-vertex-nv.slang.glsl
@@ -0,0 +1,19 @@
+// get-attribute-at-vertex.slang.glsl
+//TEST_IGNORE_FILE:
+
+#version 450
+#extension GL_NV_fragment_shader_barycentric : require
+layout(row_major) uniform;
+layout(row_major) buffer;
+
+pervertexNV layout(location = 0)
+in vec4  _S1[3];
+
+layout(location = 0)
+out vec4 _S2;
+
+void main()
+{
+    _S2 = gl_BaryCoordNV.x * ((_S1)[(0U)]) + gl_BaryCoordNV.y * ((_S1)[(1U)]) + gl_BaryCoordNV.z * ((_S1)[(2U)]);
+    return;
+}
diff --git a/tests/pipeline/rasterization/get-attribute-at-vertex-nv.slang.hlsl b/tests/pipeline/rasterization/get-attribute-at-vertex-nv.slang.hlsl
new file mode 100644
index 000000000..ce23492c9
--- /dev/null
+++ b/tests/pipeline/rasterization/get-attribute-at-vertex-nv.slang.hlsl
@@ -0,0 +1,14 @@
+// get-attribute-at-vertex.slang.hlsl
+
+//TEST_IGNORE_FILE:
+
+[shader("pixel")]
+void main(
+    nointerpolation vector<float,4> color_0 : COLOR,
+    vector<float,3> bary_0 : SV_BARYCENTRICS,
+    out vector<float,4> result_0 : SV_TARGET)
+{
+    result_0 = bary_0.x * GetAttributeAtVertex(color_0, 0U)
+             + bary_0.y * GetAttributeAtVertex(color_0, 1U)
+             + bary_0.z * GetAttributeAtVertex(color_0, 2U);
+}
diff --git a/tests/pipeline/rasterization/get-attribute-at-vertex.slang.glsl b/tests/pipeline/rasterization/get-attribute-at-vertex.slang.glsl
index 1da5f4f8a..d8710eed0 100644
--- a/tests/pipeline/rasterization/get-attribute-at-vertex.slang.glsl
+++ b/tests/pipeline/rasterization/get-attribute-at-vertex.slang.glsl
@@ -2,11 +2,11 @@
 //TEST_IGNORE_FILE:
 
 #version 450
-#extension GL_NV_fragment_shader_barycentric : require
+#extension GL_EXT_fragment_shader_barycentric : require
 layout(row_major) uniform;
 layout(row_major) buffer;
 
-pervertexNV layout(location = 0)
+pervertexEXT layout(location = 0)
 in vec4  _S1[3];
 
 layout(location = 0)
@@ -14,6 +14,6 @@ out vec4 _S2;
 
 void main()
 {
-    _S2 = gl_BaryCoordNV.x * ((_S1)[(0U)]) + gl_BaryCoordNV.y * ((_S1)[(1U)]) + gl_BaryCoordNV.z * ((_S1)[(2U)]);
+    _S2 = gl_BaryCoordEXT.x * ((_S1)[(0U)]) + gl_BaryCoordEXT.y * ((_S1)[(1U)]) + gl_BaryCoordEXT.z * ((_S1)[(2U)]);
     return;
 }