diff options
Diffstat (limited to 'mesalib/src/mesa/drivers/dri/common/drisw_util.c')
| -rw-r--r-- | mesalib/src/mesa/drivers/dri/common/drisw_util.c | 273 |
1 files changed, 273 insertions, 0 deletions
diff --git a/mesalib/src/mesa/drivers/dri/common/drisw_util.c b/mesalib/src/mesa/drivers/dri/common/drisw_util.c new file mode 100644 index 000000000..1529c23b1 --- /dev/null +++ b/mesalib/src/mesa/drivers/dri/common/drisw_util.c @@ -0,0 +1,273 @@ +/* + * Copyright 1998-1999 Precision Insight, Inc., Cedar Park, Texas. + * All Rights Reserved. + * Copyright 2010 George Sapountzis <gsapountzis@gmail.com> + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included + * in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN + * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +/** + * \file drisw_util.c + * + * DRISW utility functions, i.e. dri_util.c stripped from drm-specific bits. + */ + +#include "drisw_util.h" +#include "utils.h" + + +/** + * Screen functions + */ + +static void +setupLoaderExtensions(__DRIscreen *psp, + const __DRIextension **extensions) +{ + int i; + + for (i = 0; extensions[i]; i++) { + if (strcmp(extensions[i]->name, __DRI_SWRAST_LOADER) == 0) + psp->swrast_loader = (__DRIswrastLoaderExtension *) extensions[i]; + } +} + +static __DRIscreen * +driCreateNewScreen(int scrn, const __DRIextension **extensions, + const __DRIconfig ***driver_configs, void *data) +{ + static const __DRIextension *emptyExtensionList[] = { NULL }; + __DRIscreen *psp; + + (void) data; + + psp = CALLOC_STRUCT(__DRIscreenRec); + if (!psp) + return NULL; + + setupLoaderExtensions(psp, extensions); + + psp->extensions = emptyExtensionList; + psp->fd = -1; + psp->myNum = scrn; + + *driver_configs = driDriverAPI.InitScreen(psp); + + if (*driver_configs == NULL) { + FREE(psp); + return NULL; + } + + return psp; +} + +static void driDestroyScreen(__DRIscreen *psp) +{ + if (psp) { + driDriverAPI.DestroyScreen(psp); + + FREE(psp); + } +} + +static const __DRIextension **driGetExtensions(__DRIscreen *psp) +{ + return psp->extensions; +} + + +/** + * Context functions + */ + +static __DRIcontext * +driCreateNewContext(__DRIscreen *psp, const __DRIconfig *config, + __DRIcontext *shared, void *data) +{ + __DRIcontext *pcp; + void * const shareCtx = (shared != NULL) ? shared->driverPrivate : NULL; + + pcp = CALLOC_STRUCT(__DRIcontextRec); + if (!pcp) + return NULL; + + pcp->loaderPrivate = data; + + pcp->driScreenPriv = psp; + pcp->driDrawablePriv = NULL; + pcp->driReadablePriv = NULL; + + if (!driDriverAPI.CreateContext(API_OPENGL, + &config->modes, pcp, shareCtx)) { + FREE(pcp); + return NULL; + } + + return pcp; +} + +static void +driDestroyContext(__DRIcontext *pcp) +{ + if (pcp) { + driDriverAPI.DestroyContext(pcp); + FREE(pcp); + } +} + +static int +driCopyContext(__DRIcontext *dst, __DRIcontext *src, unsigned long mask) +{ + return GL_FALSE; +} + +static void dri_get_drawable(__DRIdrawable *pdp); +static void dri_put_drawable(__DRIdrawable *pdp); + +static int driBindContext(__DRIcontext *pcp, + __DRIdrawable *pdp, + __DRIdrawable *prp) +{ + /* Bind the drawable to the context */ + if (pcp) { + pcp->driDrawablePriv = pdp; + pcp->driReadablePriv = prp; + if (pdp) { + pdp->driContextPriv = pcp; + dri_get_drawable(pdp); + } + if ( prp && pdp != prp ) { + dri_get_drawable(prp); + } + } + + return driDriverAPI.MakeCurrent(pcp, pdp, prp); +} + +static int driUnbindContext(__DRIcontext *pcp) +{ + __DRIdrawable *pdp; + __DRIdrawable *prp; + + if (pcp == NULL) + return GL_FALSE; + + pdp = pcp->driDrawablePriv; + prp = pcp->driReadablePriv; + + /* already unbound */ + if (!pdp && !prp) + return GL_TRUE; + + driDriverAPI.UnbindContext(pcp); + + dri_put_drawable(pdp); + + if (prp != pdp) { + dri_put_drawable(prp); + } + + pcp->driDrawablePriv = NULL; + pcp->driReadablePriv = NULL; + + return GL_TRUE; +} + + +/** + * Drawable functions + */ + +static void dri_get_drawable(__DRIdrawable *pdp) +{ + pdp->refcount++; +} + +static void dri_put_drawable(__DRIdrawable *pdp) +{ + if (pdp) { + pdp->refcount--; + if (pdp->refcount) + return; + + driDriverAPI.DestroyBuffer(pdp); + + FREE(pdp); + } +} + +static __DRIdrawable * +driCreateNewDrawable(__DRIscreen *psp, + const __DRIconfig *config, void *data) +{ + __DRIdrawable *pdp; + + pdp = CALLOC_STRUCT(__DRIdrawableRec); + if (!pdp) + return NULL; + + pdp->loaderPrivate = data; + + pdp->driScreenPriv = psp; + pdp->driContextPriv = NULL; + + dri_get_drawable(pdp); + + if (!driDriverAPI.CreateBuffer(psp, pdp, &config->modes, GL_FALSE)) { + FREE(pdp); + return NULL; + } + + pdp->lastStamp = 1; /* const */ + + return pdp; +} + +static void +driDestroyDrawable(__DRIdrawable *pdp) +{ + dri_put_drawable(pdp); +} + +static void driSwapBuffers(__DRIdrawable *pdp) +{ + driDriverAPI.SwapBuffers(pdp); +} + +const __DRIcoreExtension driCoreExtension = { + { __DRI_CORE, __DRI_CORE_VERSION }, + NULL, /* driCreateNewScreen */ + driDestroyScreen, + driGetExtensions, + driGetConfigAttrib, + driIndexConfigAttrib, + NULL, /* driCreateNewDrawable */ + driDestroyDrawable, + driSwapBuffers, + driCreateNewContext, + driCopyContext, + driDestroyContext, + driBindContext, + driUnbindContext +}; + +const __DRIswrastExtension driSWRastExtension = { + { __DRI_SWRAST, __DRI_SWRAST_VERSION }, + driCreateNewScreen, + driCreateNewDrawable +}; |