d3d8/tests: Test DrawIndexedPrimitiveUP with primitive count zero.

dlls/d3d8/tests/device.c

@@ -1174,6 +1174,75 @@ static void test_lights(void)
     if(d3d8) IDirect3D8_Release(d3d8);
 }
 
+static void test_render_zero_triangles(void)
+{
+    D3DPRESENT_PARAMETERS d3dpp;
+    IDirect3DDevice8 *device = NULL;
+    IDirect3D8 *d3d8;
+    HWND hwnd;
+    HRESULT hr;
+    D3DDISPLAYMODE               d3ddm;
+
+    struct nvertex
+    {
+        float x, y, z;
+        float nx, ny, nz;
+        DWORD diffuse;
+    }  quad[] =
+    {
+        { 0.0f, -1.0f,   0.1f,  1.0f,   1.0f,   1.0f,   0xff0000ff},
+        { 0.0f,  0.0f,   0.1f,  1.0f,   1.0f,   1.0f,   0xff0000ff},
+        { 1.0f,  0.0f,   0.1f,  1.0f,   1.0f,   1.0f,   0xff0000ff},
+        { 1.0f, -1.0f,   0.1f,  1.0f,   1.0f,   1.0f,   0xff0000ff},
+    };
+
+    d3d8 = pDirect3DCreate8( D3D_SDK_VERSION );
+    ok(d3d8 != NULL, "Failed to create IDirect3D8 object\n");
+    hwnd = CreateWindow( "static", "d3d8_test", WS_OVERLAPPEDWINDOW, 100, 100, 160, 160, NULL, NULL, NULL, NULL );
+    ok(hwnd != NULL, "Failed to create window\n");
+    if (!d3d8 || !hwnd) goto cleanup;
+
+    IDirect3D8_GetAdapterDisplayMode( d3d8, D3DADAPTER_DEFAULT, &d3ddm );
+    ZeroMemory( &d3dpp, sizeof(d3dpp) );
+    d3dpp.Windowed         = TRUE;
+    d3dpp.SwapEffect       = D3DSWAPEFFECT_DISCARD;
+    d3dpp.BackBufferWidth  = 800;
+    d3dpp.BackBufferHeight  = 600;
+    d3dpp.BackBufferFormat = d3ddm.Format;
+    d3dpp.EnableAutoDepthStencil = TRUE;
+    d3dpp.AutoDepthStencilFormat = D3DFMT_D16;
+
+    hr = IDirect3D8_CreateDevice( d3d8, D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL /* no NULLREF here */, hwnd,
+                                  D3DCREATE_HARDWARE_VERTEXPROCESSING | D3DCREATE_PUREDEVICE, &d3dpp, &device );
+    ok(hr == D3D_OK || hr == D3DERR_NOTAVAILABLE, "IDirect3D8_CreateDevice failed with %s\n", DXGetErrorString8(hr));
+    if(!device)
+    {
+        skip("Failed to create a d3d device\n");
+        goto cleanup;
+    }
+
+    hr = IDirect3DDevice8_SetVertexShader(device, D3DFVF_XYZ | D3DFVF_DIFFUSE);
+    ok(hr == D3D_OK, "IDirect3DDevice8_SetVertexShader returned %#08x\n", hr);
+
+    hr = IDirect3DDevice8_BeginScene(device);
+    ok(hr == D3D_OK, "IDirect3DDevice8_BeginScene failed with %#08x\n", hr);
+    if(hr == D3D_OK)
+    {
+        hr = IDirect3DDevice8_DrawIndexedPrimitiveUP(device, D3DPT_TRIANGLELIST, 0 /* MinIndex */, 0 /* NumVerts */,
+                                                    0 /*PrimCount */, NULL, D3DFMT_INDEX16, quad, sizeof(quad[0]));
+        ok(hr == D3D_OK, "IDirect3DDevice8_DrawIndexedPrimitiveUP failed with %#08x\n", hr);
+
+        IDirect3DDevice8_EndScene(device);
+        ok(hr == D3D_OK, "IDirect3DDevice8_EndScene failed with %#08x\n", hr);
+    }
+
+    IDirect3DDevice8_Present(device, NULL, NULL, NULL, NULL);
+
+    cleanup:
+    if(device) IDirect3DDevice8_Release(device);
+    if(d3d8) IDirect3D8_Release(d3d8);
+}
+
 START_TEST(device)
 {
     HMODULE d3d8_handle = LoadLibraryA( "d3d8.dll" );
@@ -1198,5 +1267,6 @@ START_TEST(device)
         test_shader();
         test_limits();
         test_lights();
+        test_render_zero_triangles();
     }
 }