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ddraw: Use the clip space matrix in TransformVertices. 

Signed-off-by: Stefan Dösinger <stefandoesinger@gmx.at>
Signed-off-by: Henri Verbeet <hverbeet@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Stefan Dösinger 2016-10-01 18:39:31 +01:00 committed by Alexandre Julliard
parent cb078e10ed
commit 58b82c6751
1 changed files with 27 additions and 17 deletions
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44
dlls/ddraw/viewport.c
View File

@ -395,18 +395,20 @@ static HRESULT WINAPI d3d_viewport_TransformVertices(IDirect3DViewport3 *iface,
{
struct d3d_viewport *viewport = impl_from_IDirect3DViewport3(iface);
D3DVIEWPORT vp = viewport->viewports.vp1;
D3DMATRIX view_mat, world_mat, mat;
D3DMATRIX view_mat, world_mat, proj_mat, mat;
struct transform_vertices_vertex *in, *out;
float x, y, z, w;
unsigned int i;
D3DHVERTEX *outH;
struct d3d_device *device = viewport->active_device;
BOOL activate = device->current_viewport != viewport;
TRACE("iface %p, vertex_count %u, data %p, flags %#x, offscreen %p.\n",
iface, dwVertexCount, data, dwFlags, offscreen);
/* Tests on windows show that Windows crashes when this occurs,
* so don't return the (intuitive) return value
if (!viewport->active_device)
if (!device)
{
WARN("No device active, returning D3DERR_VIEWPORTHASNODEVICE\n");
return D3DERR_VIEWPORTHASNODEVICE;
@ -424,14 +426,18 @@ static HRESULT WINAPI d3d_viewport_TransformVertices(IDirect3DViewport3 *iface,
return DDERR_INVALIDPARAMS;
}
wined3d_mutex_lock();
wined3d_device_get_transform(viewport->active_device->wined3d_device,
if (activate)
viewport_activate(viewport, TRUE);
wined3d_device_get_transform(device->wined3d_device,
D3DTRANSFORMSTATE_VIEW, (struct wined3d_matrix *)&view_mat);
wined3d_device_get_transform(viewport->active_device->wined3d_device,
wined3d_device_get_transform(device->wined3d_device,
WINED3D_TS_WORLD_MATRIX(0), (struct wined3d_matrix *)&world_mat);
wined3d_device_get_transform(device->wined3d_device,
WINED3D_TS_PROJECTION, (struct wined3d_matrix *)&proj_mat);
multiply_matrix(&mat, &view_mat, &world_mat);
multiply_matrix(&mat, &viewport->active_device->legacy_projection, &mat);
multiply_matrix(&mat, &proj_mat, &mat);
/* The pointer is not tested against NULL on Windows. */
if (dwFlags & D3DTRANSFORM_CLIPPED)
@ -453,22 +459,23 @@ static HRESULT WINAPI d3d_viewport_TransformVertices(IDirect3DViewport3 *iface,
if(dwFlags & D3DTRANSFORM_CLIPPED)
{
/* If clipping is enabled, Windows assumes that outH is
* a valid pointer
*/
outH[i].u1.hx = x; outH[i].u2.hy = y; outH[i].u3.hz = z;
* a valid pointer. */
outH[i].u1.hx = (x - device->legacy_clipspace._41 * w) / device->legacy_clipspace._11;
outH[i].u2.hy = (y - device->legacy_clipspace._42 * w) / device->legacy_clipspace._22;
outH[i].u3.hz = (z - device->legacy_clipspace._43 * w) / device->legacy_clipspace._33;
outH[i].dwFlags = 0;
if(x * vp.dvScaleX > ((float) vp.dwWidth * 0.5))
if (x > w)
outH[i].dwFlags |= D3DCLIP_RIGHT;
if(x * vp.dvScaleX <= -((float) vp.dwWidth) * 0.5)
if (x < -w)
outH[i].dwFlags |= D3DCLIP_LEFT;
if(y * vp.dvScaleY > ((float) vp.dwHeight * 0.5))
if (y > w)
outH[i].dwFlags |= D3DCLIP_TOP;
if(y * vp.dvScaleY <= -((float) vp.dwHeight) * 0.5)
if (y < -w)
outH[i].dwFlags |= D3DCLIP_BOTTOM;
if(z < 0.0)
if (z < 0.0f)
outH[i].dwFlags |= D3DCLIP_FRONT;
if(z > 1.0)
if (z > w)
outH[i].dwFlags |= D3DCLIP_BACK;
*offscreen &= outH[i].dwFlags;
@ -491,13 +498,16 @@ static HRESULT WINAPI d3d_viewport_TransformVertices(IDirect3DViewport3 *iface,
w = 1 / w;
x *= w; y *= w; z *= w;
out->x = vp.dwWidth / 2 + vp.dwX + x * vp.dvScaleX;
out->y = vp.dwHeight / 2 + vp.dwY - y * vp.dvScaleY;
out->x = (x + 1.0f) * vp.dwWidth * 0.5 + vp.dwX;
out->y = (-y + 1.0f) * vp.dwHeight * 0.5 + vp.dwY;
out->z = z;
out->w = w;
out->payload = in->payload;
}
if (activate && device->current_viewport)
viewport_activate(device->current_viewport, TRUE);
wined3d_mutex_unlock();
TRACE("All done\n");