tests: Test shade mode.

Approved-by: Elizabeth Figura (@zfigura)
Approved-by: Henri Verbeet (@hverbeet)
Merge-Request: https://gitlab.winehq.org/wine/vkd3d/-/merge_requests/960

Makefile.am

@@ -196,6 +196,7 @@ vkd3d_shader_tests = \
 	tests/hlsl/sampler-offset.shader_test \
 	tests/hlsl/sampler.shader_test \
 	tests/hlsl/saturate.shader_test \
+	tests/hlsl/shade-mode.shader_test \
 	tests/hlsl/shader-interstage-interface.shader_test \
 	tests/hlsl/shape.shader_test \
 	tests/hlsl/side-effects.shader_test \

tests/hlsl/shade-mode.shader_test

@@ -0,0 +1,24 @@
+[require]
+shader model < 4.0
+
+[vertex shader]
+void main(inout float4 pos : position, out float4 tex : texcoord, out float4 diffuse : color)
+{
+    diffuse = tex = (pos + 4) / 10;
+}
+
+[pixel shader]
+float4 main(float4 tex : texcoord, float4 diffuse : color) : sv_target
+{
+    return float4(tex.xy, diffuse.xy);
+}
+
+[test]
+
+shade mode flat
+draw quad
+probe (320, 0) rgba (0.4, 0.5, 0.2, 0.2) 4
+
+shade mode linear
+draw quad
+probe (320, 0) rgba (0.4, 0.5, 0.4, 0.5) 4

tests/shader_runner.c

@@ -1255,6 +1255,13 @@ static void parse_test_directive(struct shader_runner *runner, const char *line)
         runner->alpha_test_ref = strtof(line, &rest);
         line = rest;
     }
+    else if (match_string(line, "shade mode", &line))
+    {
+        if (match_string(line, "flat", &line))
+            runner->flat_shading = true;
+        else
+            runner->flat_shading = false;
+    }
     else
     {
         fatal_error("Unknown test directive '%s'.\n", line);

tests/shader_runner.h

@@ -200,6 +200,7 @@ struct shader_runner
 
     enum vkd3d_shader_comparison_func alpha_test_func;
     float alpha_test_ref;
+    bool flat_shading;
 };
 
 struct shader_runner_ops

tests/shader_runner_d3d9.c

@@ -465,6 +465,10 @@ static bool d3d9_runner_draw(struct shader_runner *r,
     hr = IDirect3DDevice9_SetRenderState(device, D3DRS_ALPHAREF, runner->r.alpha_test_ref * 255.0);
     ok(hr == D3D_OK, "Failed to set render state, hr %#lx.\n", hr);
 
+    hr = IDirect3DDevice9_SetRenderState(device, D3DRS_SHADEMODE,
+            runner->r.flat_shading ? D3DSHADE_FLAT : D3DSHADE_GOURAUD);
+    ok(hr == D3D_OK, "Failed to set render state, hr %#lx.\n", hr);
+
     hr = IDirect3DDevice9_CreateVertexDeclaration(device, decl_elements, &vertex_declaration);
     ok(hr == D3D_OK, "Failed to create vertex declaration, hr %#lx.\n", hr);
     hr = IDirect3DDevice9_CreateVertexShader(device, ID3D10Blob_GetBufferPointer(vs_code), &vs);

tests/shader_runner_vulkan.c

@@ -451,7 +451,7 @@ static bool compile_shader(struct vulkan_shader_runner *runner, const char *sour
     enum vkd3d_shader_spirv_extension spirv_extensions[2];
     struct vkd3d_shader_resource_binding *binding;
     struct vkd3d_shader_compile_option options[3];
-    struct vkd3d_shader_parameter1 parameters[3];
+    struct vkd3d_shader_parameter1 parameters[4];
     struct vkd3d_shader_compile_option *option;
     unsigned int i, compile_options;
     char profile[7];
@@ -616,6 +616,11 @@ static bool compile_shader(struct vulkan_shader_runner *runner, const char *sour
     parameters[2].data_type = VKD3D_SHADER_PARAMETER_DATA_TYPE_FLOAT32;
     parameters[2].u.immediate_constant.u.f32 = runner->r.alpha_test_ref;
 
+    parameters[3].name = VKD3D_SHADER_PARAMETER_NAME_FLAT_INTERPOLATION;
+    parameters[3].type = VKD3D_SHADER_PARAMETER_TYPE_IMMEDIATE_CONSTANT;
+    parameters[3].data_type = VKD3D_SHADER_PARAMETER_DATA_TYPE_UINT32;
+    parameters[3].u.immediate_constant.u.u32 = runner->r.flat_shading;
+
     parameter_info.parameter_count = ARRAY_SIZE(parameters);
     parameter_info.parameters = parameters;