/**
* We only implement this function as a mechanism to check if the
* framebuffer size has changed (and update corresponding state).
*/
static void gl_ggiViewport(GLcontext *ctx, GLint x, GLint y, GLsizei w, GLsizei h)
{
GLuint newWidth, newHeight;
GLframebuffer *buffer = ctx->WinSysDrawBuffer;
gl_ggiGetSize( buffer, &newWidth, &newHeight );
if (buffer->Width != newWidth || buffer->Height != newHeight) {
_mesa_resize_framebuffer(ctx, buffer, newWidth, newHeight );
}
}
/**
* Update cliprects and scissors.
*/
void radeonSetCliprects(radeonContextPtr radeon)
{
__DRIdrawablePrivate *const drawable = radeon->dri.drawable;
__DRIdrawablePrivate *const readable = radeon->dri.readable;
GLframebuffer *const draw_fb = (GLframebuffer*)drawable->driverPrivate;
GLframebuffer *const read_fb = (GLframebuffer*)readable->driverPrivate;
if (draw_fb->_ColorDrawBufferMask[0] == BUFFER_BIT_BACK_LEFT) {
/* Can't ignore 2d windows if we are page flipping. */
if (drawable->numBackClipRects == 0 || radeon->doPageFlip ||
radeon->sarea->pfCurrentPage == 1) {
radeon->numClipRects = drawable->numClipRects;
radeon->pClipRects = drawable->pClipRects;
} else {
radeon->numClipRects = drawable->numBackClipRects;
radeon->pClipRects = drawable->pBackClipRects;
}
} else {
/* front buffer (or none, or multiple buffers */
radeon->numClipRects = drawable->numClipRects;
radeon->pClipRects = drawable->pClipRects;
}
if ((draw_fb->Width != drawable->w) ||
(draw_fb->Height != drawable->h)) {
_mesa_resize_framebuffer(radeon->glCtx, draw_fb,
drawable->w, drawable->h);
draw_fb->Initialized = GL_TRUE;
}
if (drawable != readable) {
if ((read_fb->Width != readable->w) ||
(read_fb->Height != readable->h)) {
_mesa_resize_framebuffer(radeon->glCtx, read_fb,
readable->w, readable->h);
read_fb->Initialized = GL_TRUE;
}
}
if (radeon->state.scissor.enabled)
radeonRecalcScissorRects(radeon);
radeon->lastStamp = drawable->lastStamp;
}
static void
swrast_check_and_update_window_size( struct gl_context *ctx, struct gl_framebuffer *fb )
{
GLsizei width, height;
get_window_size(fb, &width, &height);
if (fb->Width != width || fb->Height != height) {
_mesa_resize_framebuffer(ctx, fb, width, height);
}
}
/**
* For GLX_EXT_texture_from_pixmap
*/
XMesaBuffer
XMesaCreatePixmapTextureBuffer(XMesaVisual v, XMesaPixmap p,
XMesaColormap cmap,
int format, int target, int mipmap)
{
GET_CURRENT_CONTEXT(ctx);
XMesaBuffer b;
GLuint width, height;
assert(v);
b = create_xmesa_buffer((XMesaDrawable) p, PIXMAP, v, cmap);
if (!b)
return NULL;
/* get pixmap size, update framebuffer/renderbuffer dims */
xmesa_get_window_size(v->display, b, &width, &height);
_mesa_resize_framebuffer(NULL, &(b->mesa_buffer), width, height);
if (target == 0) {
/* examine dims */
if (ctx->Extensions.ARB_texture_non_power_of_two) {
target = GLX_TEXTURE_2D_EXT;
}
else if ( _mesa_bitcount(width) == 1
&& _mesa_bitcount(height) == 1) {
/* power of two size */
if (height == 1) {
target = GLX_TEXTURE_1D_EXT;
}
else {
target = GLX_TEXTURE_2D_EXT;
}
}
else if (ctx->Extensions.NV_texture_rectangle) {
target = GLX_TEXTURE_RECTANGLE_EXT;
}
else {
/* non power of two textures not supported */
XMesaDestroyBuffer(b);
return 0;
}
}
b->TextureTarget = target;
b->TextureFormat = format;
b->TextureMipmap = mipmap;
if (!initialize_visual_and_buffer(v, b, (XMesaDrawable) p, cmap)) {
xmesa_free_buffer(b);
return NULL;
}
return b;
}
/**
* Check that the gl_framebuffer associated with dPriv is the right size.
* Resize the gl_framebuffer if needed.
* It's expected that the dPriv->driverPrivate member points to a
* gl_framebuffer object.
*/
void
driUpdateFramebufferSize(struct gl_context *ctx, const __DRIdrawable *dPriv)
{
struct gl_framebuffer *fb = (struct gl_framebuffer *) dPriv->driverPrivate;
if (fb && (dPriv->w != fb->Width || dPriv->h != fb->Height)) {
_mesa_resize_framebuffer(ctx, fb, dPriv->w, dPriv->h);
/* if the driver needs the hw lock for ResizeBuffers, the drawable
might have changed again by now */
assert(fb->Width == dPriv->w);
assert(fb->Height == dPriv->h);
}
}
/**
* Query the current window size and update the corresponding struct gl_framebuffer
* and all attached renderbuffers.
* Called when:
* 1. the first time a buffer is bound to a context.
* 2. from glViewport to poll for window size changes
* 3. from the XMesaResizeBuffers() API function.
* Note: it's possible (and legal) for xmctx to be NULL. That can happen
* when resizing a buffer when no rendering context is bound.
*/
void
xmesa_check_and_update_buffer_size(XMesaContext xmctx, XMesaBuffer drawBuffer)
{
GLuint width, height;
xmesa_get_window_size(drawBuffer->display, drawBuffer, &width, &height);
if (drawBuffer->mesa_buffer.Width != width ||
drawBuffer->mesa_buffer.Height != height) {
struct gl_context *ctx = xmctx ? &xmctx->mesa : NULL;
_mesa_resize_framebuffer(ctx, &(drawBuffer->mesa_buffer), width, height);
}
drawBuffer->mesa_buffer.Initialized = GL_TRUE; /* XXX TEMPORARY? */
}
/**
* Make sure a context picks up the latest cached state of the
* drawables it binds to.
*/
static void
st_context_validate(struct st_context *st,
struct st_framebuffer *stdraw,
struct st_framebuffer *stread)
{
if (stdraw && stdraw->stamp != st->draw_stamp) {
st->dirty.st |= ST_NEW_FRAMEBUFFER;
_mesa_resize_framebuffer(st->ctx, &stdraw->Base,
stdraw->Base.Width,
stdraw->Base.Height);
st->draw_stamp = stdraw->stamp;
}
if (stread && stread->stamp != st->read_stamp) {
if (stread != stdraw) {
st->dirty.st |= ST_NEW_FRAMEBUFFER;
_mesa_resize_framebuffer(st->ctx, &stread->Base,
stread->Base.Width,
stread->Base.Height);
}
st->read_stamp = stread->stamp;
}
}
static void
hgl_viewport(struct gl_context* glContext)
{
// TODO: We should try to eliminate this function
GLint x = glContext->ViewportArray[0].X;
GLint y = glContext->ViewportArray[0].Y;
GLint width = glContext->ViewportArray[0].Width;
GLint height = glContext->ViewportArray[0].Height;
TRACE("%s(glContext: %p, x: %d, y: %d, w: %d, h: %d\n", __func__,
glContext, x, y, width, height);
_mesa_check_init_viewport(glContext, width, height);
struct gl_framebuffer *draw = glContext->WinSysDrawBuffer;
struct gl_framebuffer *read = glContext->WinSysReadBuffer;
if (draw)
_mesa_resize_framebuffer(glContext, draw, width, height);
if (read)
_mesa_resize_framebuffer(glContext, read, width, height);
}
/*
* Bind an OSMesaContext to an image buffer. The image buffer is just a
* block of memory which the client provides. Its size must be at least
* as large as width*height*sizeof(type). Its address should be a multiple
* of 4 if using RGBA mode.
*
* Image data is stored in the order of glDrawPixels: row-major order
* with the lower-left image pixel stored in the first array position
* (ie. bottom-to-top).
*
* If the context's viewport hasn't been initialized yet, it will now be
* initialized to (0,0,width,height).
*
* Input: ctx - the rendering context
* buffer - the image buffer memory
* type - data type for pixel components
* Normally, only GL_UNSIGNED_BYTE and GL_UNSIGNED_SHORT_5_6_5
* are supported. But if Mesa's been compiled with CHAN_BITS==16
* then type must be GL_UNSIGNED_SHORT. And if Mesa's been build
* with CHAN_BITS==32 then type must be GL_FLOAT.
* width, height - size of image buffer in pixels, at least 1
* Return: GL_TRUE if success, GL_FALSE if error because of invalid ctx,
* invalid buffer address, invalid type, width<1, height<1,
* width>internal limit or height>internal limit.
*/
GLAPI GLboolean GLAPIENTRY
OSMesaMakeCurrent( OSMesaContext ctx, void *buffer, GLenum type,
GLsizei width, GLsizei height )
{
if (!ctx || !buffer ||
width < 1 || height < 1 ||
width > MAX_WIDTH || height > MAX_HEIGHT) {
return GL_FALSE;
}
if (ctx->format == OSMESA_RGB_565) {
if (type != GL_UNSIGNED_SHORT_5_6_5)
return GL_FALSE;
}
else if (type != CHAN_TYPE) {
return GL_FALSE;
}
/* Need to set these before calling _mesa_make_current() since the first
* time the context is bound, _mesa_make_current() will call our
* get_buffer_size() function to initialize the viewport. These are the
* values returned by get_buffer_size():
*/
ctx->buffer = buffer;
ctx->width = width;
ctx->height = height;
osmesa_update_state( &ctx->mesa, 0 );
/* Call this periodically to detect when the user has begun using
* GL rendering from multiple threads.
*/
_glapi_check_multithread();
_mesa_make_current( &ctx->mesa, ctx->gl_buffer, ctx->gl_buffer );
if (ctx->userRowLength)
ctx->rowlength = ctx->userRowLength;
else
ctx->rowlength = width;
compute_row_addresses( ctx );
/* this will make ensure we recognize the new buffer size */
_mesa_resize_framebuffer(&ctx->mesa, ctx->gl_buffer, width, height);
return GL_TRUE;
}
static EGLSurface
fbCreatePbufferSurface(_EGLDriver *drv, EGLDisplay dpy, EGLConfig config, const EGLint *attrib_list)
{
fbSurface *surf;
surf = (fbSurface *) calloc(1, sizeof(fbSurface));
if (!surf) {
return EGL_NO_SURFACE;
}
if (_eglInitPbufferSurface(&surf->Base, drv, dpy, config, attrib_list) == EGL_NO_SURFACE) {
free(surf);
return EGL_NO_SURFACE;
}
/* create software-based pbuffer */
{
GLcontext *ctx = NULL; /* this _should_ be OK */
GLvisual vis;
_EGLConfig *conf = _eglLookupConfig(drv, dpy, config);
assert(conf); /* bad config should be caught earlier */
_eglConfigToContextModesRec(conf, &vis);
surf->mesa_framebuffer = _mesa_create_framebuffer(&vis);
_mesa_add_soft_renderbuffers(surf->mesa_framebuffer,
GL_TRUE, /* color bufs */
vis.haveDepthBuffer,
vis.haveStencilBuffer,
vis.haveAccumBuffer,
GL_FALSE, /* alpha */
GL_FALSE /* aux */ );
/* set pbuffer/framebuffer size */
_mesa_resize_framebuffer(ctx, surf->mesa_framebuffer,
surf->Base.Width, surf->Base.Height);
}
return surf->Base.Handle;
}
/* Update the hardware state. This is called if another context has
* grabbed the hardware lock, which includes the X server. This
* function also updates the driver's window state after the X server
* moves, resizes or restacks a window -- the change will be reflected
* in the drawable position and clip rects. Since the X server grabs
* the hardware lock when it changes the window state, this routine will
* automatically be called after such a change.
*/
void nouveauGetLock( nouveauContextPtr nmesa, GLuint flags )
{
__DRIdrawablePrivate *dPriv = nmesa->driDrawable;
__DRIscreenPrivate *sPriv = nmesa->driScreen;
drm_nouveau_sarea_t *sarea = nmesa->sarea;
drmGetLock( nmesa->driFd, nmesa->hHWContext, flags );
/* The window might have moved, so we might need to get new clip
* rects.
*
* NOTE: This releases and regrabs the hw lock to allow the X server
* to respond to the DRI protocol request for new drawable info.
* Since the hardware state depends on having the latest drawable
* clip rects, all state checking must be done _after_ this call.
*/
DRI_VALIDATE_DRAWABLE_INFO( sPriv, dPriv );
/* If timestamps don't match, the window has been changed */
if (nmesa->lastStamp != dPriv->lastStamp) {
struct gl_framebuffer *fb = (struct gl_framebuffer *)dPriv->driverPrivate;
/* _mesa_resize_framebuffer will take care of calling the renderbuffer's
* AllocStorage function if we need more memory to hold it */
if (fb->Width != dPriv->w || fb->Height != dPriv->h) {
_mesa_resize_framebuffer(nmesa->glCtx, fb, dPriv->w, dPriv->h);
/* resize buffers, will call nouveau_window_moved */
nouveau_build_framebuffer(nmesa->glCtx, fb);
} else {
nouveau_window_moved(nmesa->glCtx);
}
nmesa->lastStamp = dPriv->lastStamp;
}
nmesa->numClipRects = dPriv->numClipRects;
nmesa->pClipRects = dPriv->pClipRects;
}
void
MesaSoftwareRenderer::_AllocateBitmap()
{
// allocate new size of back buffer bitmap
delete fBitmap;
fBitmap = NULL;
if (fWidth < 1 || fHeight < 1)
return;
BRect rect(0.0, 0.0, fWidth - 1, fHeight - 1);
fBitmap = new BBitmap(rect, fColorSpace);
for (uint i = 0; i < fHeight; i++) {
fRowAddr[fHeight - i - 1] = (GLvoid *)((GLubyte *)fBitmap->Bits()
+ i * fBitmap->BytesPerRow());
}
_mesa_resize_framebuffer(fContext, &fFrameBuffer->Base, fWidth, fHeight);
fFrontRenderBuffer->Base.Data = fBitmap->Bits();
fFrontRenderBuffer->Size = fBitmap->BitsLength();
fBackRenderBuffer->Size = fBitmap->BitsLength();
fFrameBuffer->Width = fWidth;
fFrameBuffer->Height = fHeight;
}
/**
* Validate a framebuffer to make sure up-to-date pipe_textures are used.
* The context we need to pass in is s dummy context needed only to be
* able to get a pipe context to create pipe surfaces, and to have a
* context to call _mesa_resize_framebuffer():
* (That should probably be rethought, since those surfaces become
* drawable state, not context state, and can be freed by another pipe
* context).
*/
static void
st_framebuffer_validate(struct st_framebuffer *stfb,
struct st_context *st)
{
struct pipe_resource *textures[ST_ATTACHMENT_COUNT];
uint width, height;
unsigned i;
boolean changed = FALSE;
int32_t new_stamp = p_atomic_read(&stfb->iface->stamp);
if (stfb->iface_stamp == new_stamp)
return;
/* validate the fb */
do {
if (!stfb->iface->validate(stfb->iface, stfb->statts,
stfb->num_statts, textures))
return;
stfb->iface_stamp = new_stamp;
new_stamp = p_atomic_read(&stfb->iface->stamp);
} while(stfb->iface_stamp != new_stamp);
width = stfb->Base.Width;
height = stfb->Base.Height;
for (i = 0; i < stfb->num_statts; i++) {
struct st_renderbuffer *strb;
struct pipe_surface *ps, surf_tmpl;
gl_buffer_index idx;
if (!textures[i])
continue;
idx = attachment_to_buffer_index(stfb->statts[i]);
if (idx >= BUFFER_COUNT) {
pipe_resource_reference(&textures[i], NULL);
continue;
}
strb = st_renderbuffer(stfb->Base.Attachment[idx].Renderbuffer);
assert(strb);
if (strb->texture == textures[i]) {
pipe_resource_reference(&textures[i], NULL);
continue;
}
u_surface_default_template(&surf_tmpl, textures[i],
PIPE_BIND_RENDER_TARGET);
ps = st->pipe->create_surface(st->pipe, textures[i], &surf_tmpl);
if (ps) {
pipe_surface_reference(&strb->surface, ps);
pipe_resource_reference(&strb->texture, ps->texture);
/* ownership transfered */
pipe_surface_reference(&ps, NULL);
changed = TRUE;
strb->Base.Width = strb->surface->width;
strb->Base.Height = strb->surface->height;
width = strb->Base.Width;
height = strb->Base.Height;
}
pipe_resource_reference(&textures[i], NULL);
}
if (changed) {
++stfb->stamp;
_mesa_resize_framebuffer(st->ctx, &stfb->Base, width, height);
}
}
/**
* Create a drawing surface which can be directly displayed on a screen.
*/
static EGLSurface
fbCreateScreenSurfaceMESA(_EGLDriver *drv, EGLDisplay dpy, EGLConfig cfg,
const EGLint *attrib_list)
{
_EGLConfig *config = _eglLookupConfig(drv, dpy, cfg);
fbDisplay *display = Lookup_fbDisplay(dpy);
fbSurface *surface;
EGLSurface surf;
GLvisual vis;
GLcontext *ctx = NULL; /* this should be OK */
int origin, bytesPerPixel;
int width, height, stride;
surface = (fbSurface *) malloc(sizeof(*surface));
if (!surface) {
return EGL_NO_SURFACE;
}
/* init base class, error check, etc. */
surf = _eglInitScreenSurface(&surface->Base, drv, dpy, cfg, attrib_list);
if (surf == EGL_NO_SURFACE) {
free(surface);
return EGL_NO_SURFACE;
}
/* convert EGLConfig to GLvisual */
_eglConfigToContextModesRec(config, &vis);
/* create Mesa framebuffer */
surface->mesa_framebuffer = _mesa_create_framebuffer(&vis);
if (!surface->mesa_framebuffer) {
free(surface);
_eglRemoveSurface(&surface->Base);
return EGL_NO_SURFACE;
}
width = surface->Base.Width;
height = surface->Base.Height;
bytesPerPixel = vis.rgbBits / 8;
stride = width * bytesPerPixel;
origin = 0;
/* front color renderbuffer */
{
driRenderbuffer *drb = driNewRenderbuffer(GL_RGBA, display->pFB,
bytesPerPixel,
origin, stride, NULL);
fbSetSpanFunctions(drb, &vis);
_mesa_add_renderbuffer(surface->mesa_framebuffer,
BUFFER_FRONT_LEFT, &drb->Base);
}
/* back color renderbuffer */
if (vis.doubleBufferMode) {
GLubyte *backBuf = _mesa_malloc(stride * height);
driRenderbuffer *drb = driNewRenderbuffer(GL_RGBA, backBuf,
bytesPerPixel,
origin, stride, NULL);
fbSetSpanFunctions(drb, &vis);
_mesa_add_renderbuffer(surface->mesa_framebuffer,
BUFFER_BACK_LEFT, &drb->Base);
}
/* other renderbuffers- software based */
_mesa_add_soft_renderbuffers(surface->mesa_framebuffer,
GL_FALSE, /* color */
vis.haveDepthBuffer,
vis.haveStencilBuffer,
vis.haveAccumBuffer,
GL_FALSE, /* alpha */
GL_FALSE /* aux */);
_mesa_resize_framebuffer(ctx, surface->mesa_framebuffer, width, height);
return surf;
}
/**
* Bind an OSMesaContext to an image buffer. The image buffer is just a
* block of memory which the client provides. Its size must be at least
* as large as width*height*sizeof(type). Its address should be a multiple
* of 4 if using RGBA mode.
*
* Image data is stored in the order of glDrawPixels: row-major order
* with the lower-left image pixel stored in the first array position
* (ie. bottom-to-top).
*
* If the context's viewport hasn't been initialized yet, it will now be
* initialized to (0,0,width,height).
*
* Input: osmesa - the rendering context
* buffer - the image buffer memory
* type - data type for pixel components
* Normally, only GL_UNSIGNED_BYTE and GL_UNSIGNED_SHORT_5_6_5
* are supported. But if Mesa's been compiled with CHAN_BITS==16
* then type may be GL_UNSIGNED_SHORT or GL_UNSIGNED_BYTE. And if
* Mesa's been build with CHAN_BITS==32 then type may be GL_FLOAT,
* GL_UNSIGNED_SHORT or GL_UNSIGNED_BYTE.
* width, height - size of image buffer in pixels, at least 1
* Return: GL_TRUE if success, GL_FALSE if error because of invalid osmesa,
* invalid buffer address, invalid type, width<1, height<1,
* width>internal limit or height>internal limit.
*/
GLAPI GLboolean GLAPIENTRY
OSMesaMakeCurrent( OSMesaContext osmesa, void *buffer, GLenum type,
GLsizei width, GLsizei height )
{
if (!osmesa || !buffer ||
width < 1 || height < 1 ||
width > SWRAST_MAX_WIDTH || height > SWRAST_MAX_HEIGHT) {
return GL_FALSE;
}
if (osmesa->format == OSMESA_RGB_565 && type != GL_UNSIGNED_SHORT_5_6_5) {
return GL_FALSE;
}
#if 0
if (!(type == GL_UNSIGNED_BYTE ||
(type == GL_UNSIGNED_SHORT && CHAN_BITS >= 16) ||
(type == GL_FLOAT && CHAN_BITS == 32))) {
/* i.e. is sizeof(type) * 8 > CHAN_BITS? */
return GL_FALSE;
}
#endif
osmesa_update_state( &osmesa->mesa, 0 );
/* Call this periodically to detect when the user has begun using
* GL rendering from multiple threads.
*/
_glapi_check_multithread();
/* Create a front/left color buffer which wraps the user-provided buffer.
* There is no back color buffer.
* If the user tries to use a 8, 16 or 32-bit/channel buffer that
* doesn't match what Mesa was compiled for (CHAN_BITS) the
* _mesa_add_renderbuffer() function will create a "wrapper" renderbuffer
* that converts rendering from CHAN_BITS to the user-requested channel
* size.
*/
if (!osmesa->srb) {
osmesa->srb = new_osmesa_renderbuffer(&osmesa->mesa, osmesa->format, type);
_mesa_remove_renderbuffer(osmesa->gl_buffer, BUFFER_FRONT_LEFT);
_mesa_add_renderbuffer(osmesa->gl_buffer, BUFFER_FRONT_LEFT,
&osmesa->srb->Base);
assert(osmesa->srb->Base.RefCount == 2);
}
osmesa->DataType = type;
/* Set renderbuffer fields. Set width/height = 0 to force
* osmesa_renderbuffer_storage() being called by _mesa_resize_framebuffer()
*/
osmesa->srb->Buffer = buffer;
osmesa->srb->Base.Width = osmesa->srb->Base.Height = 0;
/* Set the framebuffer's size. This causes the
* osmesa_renderbuffer_storage() function to get called.
*/
_mesa_resize_framebuffer(&osmesa->mesa, osmesa->gl_buffer, width, height);
osmesa->gl_buffer->Initialized = GL_TRUE; /* XXX TEMPORARY? */
_mesa_make_current( &osmesa->mesa, osmesa->gl_buffer, osmesa->gl_buffer );
/* Remove renderbuffer attachment, then re-add. This installs the
* renderbuffer adaptor/wrapper if needed (for bpp conversion).
*/
_mesa_remove_renderbuffer(osmesa->gl_buffer, BUFFER_FRONT_LEFT);
_mesa_add_renderbuffer(osmesa->gl_buffer, BUFFER_FRONT_LEFT,
&osmesa->srb->Base);
/* this updates the visual's red/green/blue/alphaBits fields */
_mesa_update_framebuffer_visual(&osmesa->mesa, osmesa->gl_buffer);
/* update the framebuffer size */
_mesa_resize_framebuffer(&osmesa->mesa, osmesa->gl_buffer, width, height);
return GL_TRUE;
}
BOOL sw_SetContext(struct wgl_dc_data* dc_data, DHGLRC dhglrc)
{
struct sw_context* sw_ctx = (struct sw_context*)dhglrc;
struct sw_framebuffer* fb = dc_data->sw_data;
UINT width, height;
/* Update state */
sw_update_state(&sw_ctx->mesa, 0);
/* Get framebuffer size */
if(dc_data->flags & WGL_DC_OBJ_DC)
{
HWND hwnd = dc_data->owner.hwnd;
RECT client_rect;
if(!hwnd)
{
ERR("Physical DC without a window!\n");
return FALSE;
}
if(!GetClientRect(hwnd, &client_rect))
{
ERR("GetClientRect failed!\n");
return FALSE;
}
/* This is a physical DC. Setup the hook */
sw_ctx->hook = SetWindowsHookEx(WH_CALLWNDPROC,
sw_call_window_proc,
NULL,
GetCurrentThreadId());
/* Calculate width & height */
width = client_rect.right - client_rect.left;
height = client_rect.bottom - client_rect.top;
}
else /* OBJ_MEMDC */
{
BITMAP bm;
HBITMAP hbmp;
HDC hdc = dc_data->owner.hdc;
if(fb->flags & SW_FB_DOUBLEBUFFERED)
{
ERR("Memory DC called with a double buffered format.\n");
return FALSE;
}
hbmp = GetCurrentObject( hdc, OBJ_BITMAP );
if(!hbmp)
{
ERR("No Bitmap!\n");
return FALSE;
}
if(GetObject(hbmp, sizeof(bm), &bm) == 0)
{
ERR("GetObject failed!\n");
return FALSE;
}
width = bm.bmWidth;
height = bm.bmHeight;
}
if(!width) width = 1;
if(!height) height = 1;
fb->bmi.bmiHeader.biWidth = width;
fb->bmi.bmiHeader.biHeight = height;
/* Also make the mesa context current to mesa */
if(!_mesa_make_current(&sw_ctx->mesa, fb->gl_buffer, fb->gl_buffer))
{
ERR("_mesa_make_current filaed!\n");
return FALSE;
}
/* Set the viewport if this is the first time we initialize this context */
if(sw_ctx->mesa.Viewport.X == 0 &&
sw_ctx->mesa.Viewport.Y == 0 &&
sw_ctx->mesa.Viewport.Width == 0 &&
sw_ctx->mesa.Viewport.Height == 0)
{
_mesa_set_viewport(&sw_ctx->mesa, 0, 0, width, height);
}
/* update the framebuffer size */
_mesa_resize_framebuffer(&sw_ctx->mesa, fb->gl_buffer, width, height);
/* We're good */
return TRUE;
}
