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wined3d: Add better pixelformat selection code for pbuffers.

This commit is contained in:
Roderick Colenbrander 2007-08-09 14:12:42 +02:00 committed by Alexandre Julliard
parent 0c4c1985b0
commit 7818cbda4a
1 changed files with 51 additions and 1 deletions
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52
dlls/wined3d/context.c
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@ -132,7 +132,57 @@ WineD3DContext *CreateContext(IWineD3DDeviceImpl *This, IWineD3DSurfaceImpl *tar
if(create_pbuffer) {
HDC hdc_parent = GetDC(win_handle);
int iPixelFormat = 1; /* We only have a single useful format in Wine's OpenGL32, so use this for now. It should be fixed. */
int iPixelFormat = 0;
short red, green, blue, alphaBits, colorBits;
short depthBits, stencilBits;
IWineD3DSurface *StencilSurface = This->stencilBufferTarget;
WINED3DFORMAT StencilBufferFormat = (NULL != StencilSurface) ? ((IWineD3DSurfaceImpl *) StencilSurface)->resource.format : 0;
int attribs[256];
int nAttribs = 0;
unsigned int nFormats;
#define PUSH1(att) attribs[nAttribs++] = (att);
#define PUSH2(att,value) attribs[nAttribs++] = (att); attribs[nAttribs++] = (value);
/* Retrieve the specifications for the pixelformat from the backbuffer / stencilbuffer */
getColorBits(target->resource.format, &red, &green, &blue, &alphaBits, &colorBits);
getDepthStencilBits(StencilBufferFormat, &depthBits, &stencilBits);
PUSH2(WGL_DRAW_TO_PBUFFER_ARB, 1); /* We need pbuffer support; doublebuffering isn't needed */
PUSH2(WGL_PIXEL_TYPE_ARB, WGL_TYPE_RGBA_ARB); /* Make sure we don't get a float or color index format */
PUSH2(WGL_COLOR_BITS_ARB, colorBits);
PUSH2(WGL_ALPHA_BITS_ARB, alphaBits);
PUSH2(WGL_DEPTH_BITS_ARB, depthBits);
PUSH2(WGL_STENCIL_BITS_ARB, stencilBits);
PUSH1(0); /* end the list */
#undef PUSH1
#undef PUSH2
/* Try to find a pixelformat that matches exactly. If that fails let ChoosePixelFormat try to find a close match */
if(!GL_EXTCALL(wglChoosePixelFormatARB(hdc_parent, (const int*)&attribs, NULL, 1, &iPixelFormat, &nFormats)))
{
PIXELFORMATDESCRIPTOR pfd;
TRACE("Falling back to ChoosePixelFormat as wglChoosePixelFormatARB failed\n");
ZeroMemory(&pfd, sizeof(pfd));
pfd.nSize = sizeof(pfd);
pfd.nVersion = 1;
pfd.dwFlags = PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER_DONTCARE | PFD_DRAW_TO_WINDOW;
pfd.iPixelType = PFD_TYPE_RGBA;
pfd.cColorBits = colorBits;
pfd.cDepthBits = depthBits;
pfd.cStencilBits = stencilBits;
pfd.iLayerType = PFD_MAIN_PLANE;
iPixelFormat = ChoosePixelFormat(hdc_parent, &pfd);
if(!iPixelFormat) {
/* If this happens something is very wrong as ChoosePixelFormat barely fails */
ERR("Can't find a suitable iPixelFormat for the pbuffer\n");
}
}
TRACE("Creating a pBuffer drawable for the new context\n");
pbuffer = GL_EXTCALL(wglCreatePbufferARB(hdc_parent, iPixelFormat, target->currentDesc.Width, target->currentDesc.Height, 0));