[PATCH v2 2/2] ddraw/tests: Port test_alphatest() from d3d9 for d3d7.

[Paul Gofman]

Signed-off-by: Paul Gofman <gofmanp at gmail.com>
---
v2:
    - move test to ddraw7.c;
    - reduce color compare tolerance to 0.

 dlls/ddraw/tests/ddraw7.c | 111 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 111 insertions(+)

diff --git a/dlls/ddraw/tests/ddraw7.c b/dlls/ddraw/tests/ddraw7.c
index a063791770..7f7a2fa08a 100644
--- a/dlls/ddraw/tests/ddraw7.c
+++ b/dlls/ddraw/tests/ddraw7.c
@@ -15489,6 +15489,116 @@ static void test_multiply_transform(void)
     DestroyWindow(window);
 }
 
+static void test_alphatest(void)
+{
+#define ALPHATEST_PASSED 0x0000ff00
+#define ALPHATEST_FAILED 0x00ff0000
+    IDirect3DDevice7 *device;
+    IDirectDrawSurface7 *rt;
+    unsigned int i;
+    D3DCOLOR color;
+    ULONG refcount;
+    HWND window;
+    DWORD value;
+    HRESULT hr;
+
+    static const struct
+    {
+        D3DCMPFUNC func;
+        D3DCOLOR color_less;
+        D3DCOLOR color_equal;
+        D3DCOLOR color_greater;
+    }
+    test_data[] =
+    {
+        {D3DCMP_NEVER,        ALPHATEST_FAILED, ALPHATEST_FAILED, ALPHATEST_FAILED},
+        {D3DCMP_LESS,         ALPHATEST_PASSED, ALPHATEST_FAILED, ALPHATEST_FAILED},
+        {D3DCMP_EQUAL,        ALPHATEST_FAILED, ALPHATEST_PASSED, ALPHATEST_FAILED},
+        {D3DCMP_LESSEQUAL,    ALPHATEST_PASSED, ALPHATEST_PASSED, ALPHATEST_FAILED},
+        {D3DCMP_GREATER,      ALPHATEST_FAILED, ALPHATEST_FAILED, ALPHATEST_PASSED},
+        {D3DCMP_NOTEQUAL,     ALPHATEST_PASSED, ALPHATEST_FAILED, ALPHATEST_PASSED},
+        {D3DCMP_GREATEREQUAL, ALPHATEST_FAILED, ALPHATEST_PASSED, ALPHATEST_PASSED},
+        {D3DCMP_ALWAYS,       ALPHATEST_PASSED, ALPHATEST_PASSED, ALPHATEST_PASSED},
+    };
+    static struct
+    {
+        struct vec3 position;
+        DWORD diffuse;
+    }
+    quad[] =
+    {
+        {{-1.0f, -1.0f, 0.1f}, ALPHATEST_PASSED | 0x80000000},
+        {{-1.0f,  1.0f, 0.1f}, ALPHATEST_PASSED | 0x80000000},
+        {{ 1.0f, -1.0f, 0.1f}, ALPHATEST_PASSED | 0x80000000},
+        {{ 1.0f,  1.0f, 0.1f}, ALPHATEST_PASSED | 0x80000000},
+    };
+
+    window = create_window();
+    if (!(device = create_device(window, DDSCL_NORMAL)))
+    {
+        skip("Failed to create 3D device.\n");
+        DestroyWindow(window);
+        return;
+    }
+    hr = IDirect3DDevice7_GetRenderTarget(device, &rt);
+    ok(hr == D3D_OK, "IDirect3DDevice7_GetRenderTarget failed, hr %#x.\n", hr);
+
+    hr = IDirect3DDevice7_Clear(device, 0, NULL, D3DCLEAR_TARGET, 0xff0000ff, 0.0f, 0);
+    ok(hr == D3D_OK, "IDirect3DDevice7_Clear failed, hr %#x.\n", hr);
+    hr = IDirect3DDevice7_SetRenderState(device, D3DRENDERSTATE_LIGHTING, FALSE);
+    ok(hr == D3D_OK, "IDirect3DDevice7_SetRenderState failed, hr %#x.\n", hr);
+    hr = IDirect3DDevice7_SetRenderState(device, D3DRENDERSTATE_ZENABLE, FALSE);
+    ok(hr == D3D_OK, "IDirect3DDevice7_SetRenderState failed, hr %#x.\n", hr);
+    hr = IDirect3DDevice7_SetRenderState(device, D3DRENDERSTATE_ALPHATESTENABLE, TRUE);
+    ok(hr == D3D_OK, "IDirect3DDevice7_SetRenderState failed, hr %#x.\n", hr);
+
+    for(i = 0; i < ARRAY_SIZE(test_data); ++i)
+    {
+        hr = IDirect3DDevice7_SetRenderState(device, D3DRENDERSTATE_ALPHAFUNC, test_data[i].func);
+        ok(hr == D3D_OK, "IDirect3DDevice7_SetRenderState failed, hr %#x.\n", hr);
+
+        hr = IDirect3DDevice7_Clear(device, 0, NULL, D3DCLEAR_TARGET, ALPHATEST_FAILED, 0.0f, 0);
+        ok(hr == D3D_OK, "IDirect3DDevice7_Clear failed, hr %#x.\n", hr);
+        hr = IDirect3DDevice7_SetRenderState(device, D3DRENDERSTATE_ALPHAREF, 0x70);
+        ok(hr == D3D_OK, "IDirect3DDevice7_SetRenderState failed, hr %#x.\n", hr);
+        hr = IDirect3DDevice7_BeginScene(device);
+        ok(hr == D3D_OK, "IDirect3DDevice7_BeginScene failed, hr %#x.\n", hr);
+        hr = IDirect3DDevice7_DrawPrimitive(device, D3DPT_TRIANGLESTRIP,
+                D3DFVF_XYZ | D3DFVF_DIFFUSE, quad, ARRAY_SIZE(quad), 0);
+        ok(hr == D3D_OK, "IDirect3DDevice7_DrawPrimitive failed, hr %#x.\n", hr);
+        hr = IDirect3DDevice7_EndScene(device);
+        ok(hr == D3D_OK, "IDirect3DDevice7_EndScene failed, hr %#x.\n", hr);
+        color = get_surface_color(rt, 320, 240);
+        ok(compare_color(color, test_data[i].color_greater, 0),
+                "Alphatest failed, color 0x%08x, expected 0x%08x, alpha > ref, func %u.\n",
+                color, test_data[i].color_greater, test_data[i].func);
+
+        hr = IDirect3DDevice7_Clear(device, 0, NULL, D3DCLEAR_TARGET, ALPHATEST_FAILED, 0.0f, 0);
+        ok(hr == D3D_OK, "IDirect3DDevice7_Clear failed, hr %#x.\n", hr);
+        hr = IDirect3DDevice7_SetRenderState(device, D3DRENDERSTATE_ALPHAREF, 0xff70);
+        ok(hr == D3D_OK, "IDirect3DDevice7_SetRenderState failed, hr %#x.\n", hr);
+        hr = IDirect3DDevice7_GetRenderState(device, D3DRENDERSTATE_ALPHAREF, &value);
+        ok(hr == D3D_OK, "IDirect3DDevice7_GetRenderState failed, hr %#x.\n", hr);
+        ok(value == 0xff70, "Unexpected D3DRS_ALPHAREF value %#x.\n", value);
+        hr = IDirect3DDevice7_BeginScene(device);
+        ok(hr == D3D_OK, "IDirect3DDevice7_BeginScene failed, hr %#x.\n", hr);
+        hr = IDirect3DDevice7_DrawPrimitive(device, D3DPT_TRIANGLESTRIP,
+                D3DFVF_XYZ | D3DFVF_DIFFUSE, quad, ARRAY_SIZE(quad), 0);
+        ok(hr == D3D_OK, "IDirect3DDevice7_DrawPrimitive failed, hr %#x.\n", hr);
+        hr = IDirect3DDevice7_EndScene(device);
+        ok(hr == D3D_OK, "IDirect3DDevice7_EndScene failed, hr %#x.\n", hr);
+        color = get_surface_color(rt, 320, 240);
+        ok(compare_color(color, test_data[i].color_greater, 0),
+                "Alphatest failed, color 0x%08x, expected 0x%08x, alpha > ref, func %u.\n",
+                color, test_data[i].color_greater, test_data[i].func);
+    }
+
+    IDirectDrawSurface7_Release(rt);
+    refcount = IDirect3DDevice7_Release(device);
+    ok(!refcount, "Device has %u references left.\n", refcount);
+    DestroyWindow(window);
+}
+
 START_TEST(ddraw7)
 {
     DDDEVICEIDENTIFIER2 identifier;
@@ -15631,4 +15741,5 @@ START_TEST(ddraw7)
     test_sysmem_draw();
     test_gdi_surface();
     test_multiply_transform();
+    test_alphatest();
 }
-- 
2.20.1