BOOL APIENTRY
DrvPresentBuffers(HDC hdc, PGLPRESENTBUFFERSDATA data)
{
struct stw_framebuffer *fb;
struct pipe_screen *screen;
struct pipe_resource *res;
if (!stw_dev)
return FALSE;
fb = stw_framebuffer_from_hdc( hdc );
if (fb == NULL)
return FALSE;
screen = stw_dev->screen;
res = (struct pipe_resource *)data->pPrivateData;
if (data->hSharedSurface != fb->hSharedSurface) {
if (fb->shared_surface) {
stw_dev->stw_winsys->shared_surface_close(screen, fb->shared_surface);
fb->shared_surface = NULL;
}
fb->hSharedSurface = data->hSharedSurface;
if (data->hSharedSurface &&
stw_dev->stw_winsys->shared_surface_open) {
fb->shared_surface =
stw_dev->stw_winsys->shared_surface_open(screen,
fb->hSharedSurface);
}
}
if (!fb->minimized) {
if (fb->shared_surface) {
stw_dev->stw_winsys->compose(screen,
res,
fb->shared_surface,
&fb->client_rect,
data->PresentHistoryToken);
}
else {
stw_dev->stw_winsys->present( screen, res, hdc );
}
}
stw_framebuffer_update(fb);
stw_notify_current_locked(fb);
stw_framebuffer_unlock(fb);
return TRUE;
}
int
stw_pixelformat_get(HDC hdc)
{
int iPixelFormat = 0;
struct stw_framebuffer *fb;
fb = stw_framebuffer_from_hdc(hdc);
if (fb) {
iPixelFormat = fb->iPixelFormat;
stw_framebuffer_unlock(fb);
}
return iPixelFormat;
}
BOOL APIENTRY
DrvSwapBuffers(HDC hdc)
{
struct stw_context *ctx;
struct stw_framebuffer *fb;
if (!stw_dev)
return FALSE;
fb = stw_framebuffer_from_hdc( hdc );
if (fb == NULL)
return FALSE;
if (!(fb->pfi->pfd.dwFlags & PFD_DOUBLEBUFFER)) {
stw_framebuffer_unlock(fb);
return TRUE;
}
ctx = stw_current_context();
if (ctx) {
if (ctx->hud) {
/* Display the HUD */
struct pipe_resource *back =
stw_get_framebuffer_resource(fb->stfb, ST_ATTACHMENT_BACK_LEFT);
if (back) {
hud_draw(ctx->hud, back);
}
}
if (ctx->current_framebuffer == fb) {
/* flush current context */
ctx->st->flush(ctx->st, ST_FLUSH_END_OF_FRAME, NULL);
}
}
if (stw_dev->swap_interval != 0) {
wait_swap_interval(fb);
}
return stw_st_swap_framebuffer_locked(hdc, fb->stfb);
}
BOOL APIENTRY
DrvSwapBuffers(
HDC hdc )
{
struct stw_framebuffer *fb;
if (!stw_dev)
return FALSE;
fb = stw_framebuffer_from_hdc( hdc );
if (fb == NULL)
return FALSE;
if (!(fb->pfi->pfd.dwFlags & PFD_DOUBLEBUFFER)) {
stw_framebuffer_release(fb);
return TRUE;
}
stw_flush_current_locked(fb);
return stw_st_swap_framebuffer_locked(hdc, fb->stfb);
}
/**
* XXX: Dispatch pipe_screen::flush_front_buffer to our
* stw_winsys::flush_front_buffer.
*/
static void
stw_flush_frontbuffer(struct pipe_screen *screen,
struct pipe_surface *surface,
void *context_private )
{
const struct stw_winsys *stw_winsys = stw_dev->stw_winsys;
HDC hdc = (HDC)context_private;
struct stw_framebuffer *fb;
fb = stw_framebuffer_from_hdc( hdc );
/* fb can be NULL if window was destroyed already */
if (fb) {
#if DEBUG
{
struct pipe_surface *surface2;
if(!st_get_framebuffer_surface( fb->stfb, ST_SURFACE_FRONT_LEFT, &surface2 ))
assert(0);
else
assert(surface2 == surface);
}
#endif
#ifdef DEBUG
if(stw_dev->trace_running) {
screen = trace_screen(screen)->screen;
surface = trace_surface(surface)->surface;
}
#endif
}
stw_winsys->flush_frontbuffer(screen, surface, hdc);
if(fb) {
stw_framebuffer_update(fb);
stw_framebuffer_release(fb);
}
}
BOOL
stw_make_current(
HDC hdc,
DHGLRC dhglrc )
{
struct stw_context *curctx = NULL;
struct stw_context *ctx = NULL;
struct stw_framebuffer *fb = NULL;
BOOL ret = FALSE;
if (!stw_dev)
return FALSE;
curctx = stw_current_context();
if (curctx != NULL) {
if (curctx->dhglrc == dhglrc) {
if (curctx->hdc == hdc) {
/* Return if already current. */
return TRUE;
}
} else {
curctx->st->flush(curctx->st, ST_FLUSH_FRONT, NULL);
}
}
if (dhglrc) {
pipe_mutex_lock( stw_dev->ctx_mutex );
ctx = stw_lookup_context_locked( dhglrc );
pipe_mutex_unlock( stw_dev->ctx_mutex );
if (!ctx) {
goto fail;
}
fb = stw_framebuffer_from_hdc( hdc );
if (fb) {
stw_framebuffer_update(fb);
}
else {
/* Applications should call SetPixelFormat before creating a context,
* but not all do, and the opengl32 runtime seems to use a default pixel
* format in some cases, so we must create a framebuffer for those here
*/
int iPixelFormat = GetPixelFormat(hdc);
if (iPixelFormat)
fb = stw_framebuffer_create( hdc, iPixelFormat );
if (!fb)
goto fail;
}
if (fb->iPixelFormat != ctx->iPixelFormat) {
SetLastError(ERROR_INVALID_PIXEL_FORMAT);
goto fail;
}
/* Bind the new framebuffer */
ctx->hdc = hdc;
ret = stw_dev->stapi->make_current(stw_dev->stapi, ctx->st,
fb->stfb, fb->stfb);
stw_framebuffer_reference(&ctx->current_framebuffer, fb);
} else {
ret = stw_dev->stapi->make_current(stw_dev->stapi, NULL, NULL, NULL);
}
fail:
if (fb) {
stw_framebuffer_release(fb);
}
/* On failure, make the thread's current rendering context not current
* before returning */
if (!ret) {
stw_dev->stapi->make_current(stw_dev->stapi, NULL, NULL, NULL);
ctx = NULL;
}
/* Unreference the previous framebuffer if any. It must be done after
* make_current, as it can be referenced inside.
*/
if (curctx && curctx != ctx) {
stw_framebuffer_reference(&curctx->current_framebuffer, NULL);
}
return ret;
}
/**
* Called via DrvCreateContext(), DrvCreateLayerContext() and
* wglCreateContextAttribsARB() to actually create a rendering context.
* \param handle the desired DHGLRC handle to use for the context, or zero
* if a new handle should be allocated.
* \return the handle for the new context or zero if there was a problem.
*/
DHGLRC
stw_create_context_attribs(HDC hdc, INT iLayerPlane, DHGLRC hShareContext,
int majorVersion, int minorVersion,
int contextFlags, int profileMask,
DHGLRC handle)
{
int iPixelFormat;
struct stw_framebuffer *fb;
const struct stw_pixelformat_info *pfi;
struct st_context_attribs attribs;
struct stw_context *ctx = NULL;
struct stw_context *shareCtx = NULL;
enum st_context_error ctx_err = 0;
if (!stw_dev)
return 0;
if (iLayerPlane != 0)
return 0;
iPixelFormat = GetPixelFormat(hdc);
if(!iPixelFormat)
return 0;
/*
* GDI only knows about displayable pixel formats, so determine the pixel
* format from the framebuffer.
*
* TODO: Remove the GetPixelFormat() above, and stop relying on GDI.
*/
fb = stw_framebuffer_from_hdc( hdc );
if (fb) {
assert(iPixelFormat == fb->iDisplayablePixelFormat);
iPixelFormat = fb->iPixelFormat;
stw_framebuffer_release(fb);
}
pfi = stw_pixelformat_get_info( iPixelFormat );
if (hShareContext != 0) {
pipe_mutex_lock( stw_dev->ctx_mutex );
shareCtx = stw_lookup_context_locked( hShareContext );
pipe_mutex_unlock( stw_dev->ctx_mutex );
}
ctx = CALLOC_STRUCT( stw_context );
if (ctx == NULL)
goto no_ctx;
ctx->hdc = hdc;
ctx->iPixelFormat = iPixelFormat;
memset(&attribs, 0, sizeof(attribs));
attribs.visual = pfi->stvis;
attribs.major = majorVersion;
attribs.minor = minorVersion;
if (contextFlags & WGL_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB)
attribs.flags |= ST_CONTEXT_FLAG_FORWARD_COMPATIBLE;
if (contextFlags & WGL_CONTEXT_DEBUG_BIT_ARB)
attribs.flags |= ST_CONTEXT_FLAG_DEBUG;
switch (profileMask) {
case WGL_CONTEXT_CORE_PROFILE_BIT_ARB:
/* There are no profiles before OpenGL 3.2. The
* WGL_ARB_create_context_profile spec says:
*
* "If the requested OpenGL version is less than 3.2,
* WGL_CONTEXT_PROFILE_MASK_ARB is ignored and the functionality
* of the context is determined solely by the requested version."
*/
if (majorVersion > 3 || (majorVersion == 3 && minorVersion >= 2)) {
attribs.profile = ST_PROFILE_OPENGL_CORE;
break;
}
/* fall-through */
case WGL_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB:
/*
* The spec also says:
*
* "If version 3.1 is requested, the context returned may implement
* any of the following versions:
*
* * Version 3.1. The GL_ARB_compatibility extension may or may not
* be implemented, as determined by the implementation.
* * The core profile of version 3.2 or greater."
*
* and because Mesa doesn't support GL_ARB_compatibility, the only chance to
* honour a 3.1 context is through core profile.
*/
if (majorVersion == 3 && minorVersion == 1) {
attribs.profile = ST_PROFILE_OPENGL_CORE;
} else {
attribs.profile = ST_PROFILE_DEFAULT;
}
break;
case WGL_CONTEXT_ES_PROFILE_BIT_EXT:
if (majorVersion >= 2) {
attribs.profile = ST_PROFILE_OPENGL_ES2;
} else {
attribs.profile = ST_PROFILE_OPENGL_ES1;
}
break;
default:
assert(0);
goto no_st_ctx;
}
ctx->st = stw_dev->stapi->create_context(stw_dev->stapi,
stw_dev->smapi, &attribs, &ctx_err, shareCtx ? shareCtx->st : NULL);
if (ctx->st == NULL)
goto no_st_ctx;
ctx->st->st_manager_private = (void *) ctx;
if (ctx->st->cso_context) {
ctx->hud = hud_create(ctx->st->pipe, ctx->st->cso_context);
}
pipe_mutex_lock( stw_dev->ctx_mutex );
if (handle) {
/* We're replacing the context data for this handle. See the
* wglCreateContextAttribsARB() function.
*/
struct stw_context *old_ctx =
stw_lookup_context_locked((unsigned) handle);
if (old_ctx) {
/* free the old context data associated with this handle */
if (old_ctx->hud) {
hud_destroy(old_ctx->hud);
}
ctx->st->destroy(old_ctx->st);
FREE(old_ctx);
}
/* replace table entry */
handle_table_set(stw_dev->ctx_table, (unsigned) handle, ctx);
}
else {
/* create new table entry */
handle = (DHGLRC) handle_table_add(stw_dev->ctx_table, ctx);
}
ctx->dhglrc = handle;
pipe_mutex_unlock( stw_dev->ctx_mutex );
if (!ctx->dhglrc)
goto no_hglrc;
return ctx->dhglrc;
no_hglrc:
if (ctx->hud) {
hud_destroy(ctx->hud);
}
ctx->st->destroy(ctx->st);
no_st_ctx:
FREE(ctx);
no_ctx:
return 0;
}
DHGLRC
stw_create_context_attribs(
HDC hdc,
INT iLayerPlane,
DHGLRC hShareContext,
int majorVersion, int minorVersion,
int contextFlags, int profileMask)
{
int iPixelFormat;
struct stw_framebuffer *fb;
const struct stw_pixelformat_info *pfi;
struct st_context_attribs attribs;
struct stw_context *ctx = NULL;
struct stw_context *shareCtx = NULL;
enum st_context_error ctx_err = 0;
if (!stw_dev)
return 0;
if (iLayerPlane != 0)
return 0;
iPixelFormat = GetPixelFormat(hdc);
if(!iPixelFormat)
return 0;
/*
* GDI only knows about displayable pixel formats, so determine the pixel format
* from the framebuffer.
*
* TODO: Remove the GetPixelFormat() above, and stop relying on GDI.
*/
fb = stw_framebuffer_from_hdc( hdc );
if (fb) {
assert(iPixelFormat == fb->iDisplayablePixelFormat);
iPixelFormat = fb->iPixelFormat;
stw_framebuffer_release(fb);
}
pfi = stw_pixelformat_get_info( iPixelFormat );
if (hShareContext != 0) {
pipe_mutex_lock( stw_dev->ctx_mutex );
shareCtx = stw_lookup_context_locked( hShareContext );
pipe_mutex_unlock( stw_dev->ctx_mutex );
}
ctx = CALLOC_STRUCT( stw_context );
if (ctx == NULL)
goto no_ctx;
ctx->hdc = hdc;
ctx->iPixelFormat = iPixelFormat;
memset(&attribs, 0, sizeof(attribs));
attribs.visual = pfi->stvis;
attribs.major = majorVersion;
attribs.minor = minorVersion;
if (contextFlags & WGL_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB)
attribs.flags |= ST_CONTEXT_FLAG_FORWARD_COMPATIBLE;
if (contextFlags & WGL_CONTEXT_DEBUG_BIT_ARB)
attribs.flags |= ST_CONTEXT_FLAG_DEBUG;
/* There are no profiles before OpenGL 3.2. The
* WGL_ARB_create_context_profile spec says:
*
* "If the requested OpenGL version is less than 3.2,
* WGL_CONTEXT_PROFILE_MASK_ARB is ignored and the functionality of the
* context is determined solely by the requested version."
*
* The spec also says:
*
* "The default value for WGL_CONTEXT_PROFILE_MASK_ARB is
* WGL_CONTEXT_CORE_PROFILE_BIT_ARB."
*/
attribs.profile = ST_PROFILE_DEFAULT;
if ((majorVersion > 3 || (majorVersion == 3 && minorVersion >= 2))
&& ((profileMask & WGL_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB) == 0))
attribs.profile = ST_PROFILE_OPENGL_CORE;
ctx->st = stw_dev->stapi->create_context(stw_dev->stapi,
stw_dev->smapi, &attribs, &ctx_err, shareCtx ? shareCtx->st : NULL);
if (ctx->st == NULL)
goto no_st_ctx;
ctx->st->st_manager_private = (void *) ctx;
pipe_mutex_lock( stw_dev->ctx_mutex );
ctx->dhglrc = handle_table_add(stw_dev->ctx_table, ctx);
pipe_mutex_unlock( stw_dev->ctx_mutex );
if (!ctx->dhglrc)
goto no_hglrc;
return ctx->dhglrc;
no_hglrc:
ctx->st->destroy(ctx->st);
no_st_ctx:
FREE(ctx);
no_ctx:
return 0;
}