/**
* 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;
}
/**
* Create a new XMesaContext.
* \param v the XMesaVisual
* \param share_list another XMesaContext with which to share display
* lists or NULL if no sharing is wanted.
* \return an XMesaContext or NULL if error.
*/
PUBLIC
XMesaContext XMesaCreateContext( XMesaVisual v, XMesaContext share_list,
GLuint major, GLuint minor,
GLuint profileMask, GLuint contextFlags)
{
XMesaDisplay xmdpy = xmesa_init_display(v->display);
struct st_context_attribs attribs;
enum st_context_error ctx_err = 0;
XMesaContext c;
if (!xmdpy)
goto no_xmesa_context;
/* Note: the XMesaContext contains a Mesa struct gl_context struct (inheritance) */
c = (XMesaContext) CALLOC_STRUCT(xmesa_context);
if (!c)
goto no_xmesa_context;
c->xm_visual = v;
c->xm_buffer = NULL; /* set later by XMesaMakeCurrent */
c->xm_read_buffer = NULL;
memset(&attribs, 0, sizeof(attribs));
attribs.visual = v->stvis;
attribs.major = major;
attribs.minor = minor;
if (contextFlags & GLX_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB)
attribs.flags |= ST_CONTEXT_FLAG_FORWARD_COMPATIBLE;
if (contextFlags & GLX_CONTEXT_DEBUG_BIT_ARB)
attribs.flags |= ST_CONTEXT_FLAG_DEBUG;
if (contextFlags & GLX_CONTEXT_ROBUST_ACCESS_BIT_ARB)
attribs.flags |= ST_CONTEXT_FLAG_ROBUST_ACCESS;
switch (profileMask) {
case GLX_CONTEXT_CORE_PROFILE_BIT_ARB:
/* There are no profiles before OpenGL 3.2. The
* GLX_ARB_create_context_profile spec says:
*
* "If the requested OpenGL version is less than 3.2,
* GLX_CONTEXT_PROFILE_MASK_ARB is ignored and the functionality
* of the context is determined solely by the requested version."
*/
if (major > 3 || (major == 3 && minor >= 2)) {
attribs.profile = ST_PROFILE_OPENGL_CORE;
break;
}
/* fall-through */
case GLX_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 (major == 3 && minor == 1) {
attribs.profile = ST_PROFILE_OPENGL_CORE;
} else {
attribs.profile = ST_PROFILE_DEFAULT;
}
break;
case GLX_CONTEXT_ES_PROFILE_BIT_EXT:
if (major >= 2) {
attribs.profile = ST_PROFILE_OPENGL_ES2;
} else {
attribs.profile = ST_PROFILE_OPENGL_ES1;
}
break;
default:
assert(0);
goto no_st;
}
c->st = stapi->create_context(stapi, xmdpy->smapi, &attribs,
&ctx_err, (share_list) ? share_list->st : NULL);
if (c->st == NULL)
goto no_st;
c->st->st_manager_private = (void *) c;
c->hud = hud_create(c->st->cso_context, NULL);
return c;
no_st:
free(c);
no_xmesa_context:
return NULL;
}
/**
* Create a new XMesaContext.
* \param v the XMesaVisual
* \param share_list another XMesaContext with which to share display
* lists or NULL if no sharing is wanted.
* \return an XMesaContext or NULL if error.
*/
PUBLIC
XMesaContext XMesaCreateContext( XMesaVisual v, XMesaContext share_list,
GLuint major, GLuint minor,
GLuint profileMask, GLuint contextFlags)
{
XMesaDisplay xmdpy = xmesa_init_display(v->display);
struct st_context_attribs attribs;
enum st_context_error ctx_err = 0;
XMesaContext c;
if (!xmdpy)
return NULL;
/* Note: the XMesaContext contains a Mesa struct gl_context struct (inheritance) */
c = (XMesaContext) CALLOC_STRUCT(xmesa_context);
if (!c)
return NULL;
c->xm_visual = v;
c->xm_buffer = NULL; /* set later by XMesaMakeCurrent */
c->xm_read_buffer = NULL;
memset(&attribs, 0, sizeof(attribs));
attribs.visual = v->stvis;
attribs.major = major;
attribs.minor = minor;
if (contextFlags & GLX_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB)
attribs.flags |= ST_CONTEXT_FLAG_FORWARD_COMPATIBLE;
if (contextFlags & GLX_CONTEXT_DEBUG_BIT_ARB)
attribs.flags |= ST_CONTEXT_FLAG_DEBUG;
if (contextFlags & GLX_CONTEXT_ROBUST_ACCESS_BIT_ARB)
attribs.flags |= ST_CONTEXT_FLAG_ROBUST_ACCESS;
/* There are no profiles before OpenGL 3.2. The
* GLX_ARB_create_context_profile spec says:
*
* "If the requested OpenGL version is less than 3.2,
* GLX_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 GLX_CONTEXT_PROFILE_MASK_ARB is
* GLX_CONTEXT_CORE_PROFILE_BIT_ARB."
*/
attribs.profile = ST_PROFILE_DEFAULT;
if ((major > 3 || (major == 3 && minor >= 2))
&& ((profileMask & GLX_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB) == 0))
attribs.profile = ST_PROFILE_OPENGL_CORE;
c->st = stapi->create_context(stapi, xmdpy->smapi, &attribs,
&ctx_err, (share_list) ? share_list->st : NULL);
if (c->st == NULL)
goto fail;
c->st->st_manager_private = (void *) c;
c->hud = hud_create(c->st->pipe, c->st->cso_context);
return c;
fail:
if (c->st)
c->st->destroy(c->st);
free(c);
return NULL;
}
GLboolean
dri_create_context(gl_api api, const struct gl_config * visual,
__DRIcontext * cPriv,
unsigned major_version,
unsigned minor_version,
uint32_t flags,
bool notify_reset,
unsigned *error,
void *sharedContextPrivate)
{
__DRIscreen *sPriv = cPriv->driScreenPriv;
struct dri_screen *screen = dri_screen(sPriv);
struct st_api *stapi = screen->st_api;
struct dri_context *ctx = NULL;
struct st_context_iface *st_share = NULL;
struct st_context_attribs attribs;
enum st_context_error ctx_err = 0;
memset(&attribs, 0, sizeof(attribs));
switch (api) {
case API_OPENGLES:
attribs.profile = ST_PROFILE_OPENGL_ES1;
break;
case API_OPENGLES2:
attribs.profile = ST_PROFILE_OPENGL_ES2;
break;
case API_OPENGL_COMPAT:
case API_OPENGL_CORE:
attribs.profile = api == API_OPENGL_COMPAT ? ST_PROFILE_DEFAULT
: ST_PROFILE_OPENGL_CORE;
attribs.major = major_version;
attribs.minor = minor_version;
if ((flags & __DRI_CTX_FLAG_DEBUG) != 0)
attribs.flags |= ST_CONTEXT_FLAG_DEBUG;
if ((flags & __DRI_CTX_FLAG_FORWARD_COMPATIBLE) != 0)
attribs.flags |= ST_CONTEXT_FLAG_FORWARD_COMPATIBLE;
break;
default:
*error = __DRI_CTX_ERROR_BAD_API;
goto fail;
}
if (flags & ~(__DRI_CTX_FLAG_DEBUG | __DRI_CTX_FLAG_FORWARD_COMPATIBLE)) {
*error = __DRI_CTX_ERROR_UNKNOWN_FLAG;
goto fail;
}
if (notify_reset) {
*error = __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE;
goto fail;
}
if (sharedContextPrivate) {
st_share = ((struct dri_context *)sharedContextPrivate)->st;
}
ctx = CALLOC_STRUCT(dri_context);
if (ctx == NULL) {
*error = __DRI_CTX_ERROR_NO_MEMORY;
goto fail;
}
cPriv->driverPrivate = ctx;
ctx->cPriv = cPriv;
ctx->sPriv = sPriv;
dri_fill_st_options(&attribs.options, &screen->optionCache);
dri_fill_st_visual(&attribs.visual, screen, visual);
ctx->st = stapi->create_context(stapi, &screen->base, &attribs, &ctx_err,
st_share);
if (ctx->st == NULL) {
switch (ctx_err) {
case ST_CONTEXT_SUCCESS:
*error = __DRI_CTX_ERROR_SUCCESS;
break;
case ST_CONTEXT_ERROR_NO_MEMORY:
*error = __DRI_CTX_ERROR_NO_MEMORY;
break;
case ST_CONTEXT_ERROR_BAD_API:
*error = __DRI_CTX_ERROR_BAD_API;
break;
case ST_CONTEXT_ERROR_BAD_VERSION:
*error = __DRI_CTX_ERROR_BAD_VERSION;
break;
case ST_CONTEXT_ERROR_BAD_FLAG:
*error = __DRI_CTX_ERROR_BAD_FLAG;
break;
case ST_CONTEXT_ERROR_UNKNOWN_ATTRIBUTE:
*error = __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE;
break;
case ST_CONTEXT_ERROR_UNKNOWN_FLAG:
*error = __DRI_CTX_ERROR_UNKNOWN_FLAG;
break;
}
goto fail;
}
ctx->st->st_manager_private = (void *) ctx;
ctx->stapi = stapi;
if (ctx->st->cso_context) {
ctx->pp = pp_init(ctx->st->pipe, screen->pp_enabled, ctx->st->cso_context);
ctx->hud = hud_create(ctx->st->pipe, ctx->st->cso_context);
}
*error = __DRI_CTX_ERROR_SUCCESS;
return GL_TRUE;
fail:
if (ctx && ctx->st)
ctx->st->destroy(ctx->st);
free(ctx);
return GL_FALSE;
}
