/*
* (C) Copyright IBM Corporation 2002, 2004
* All Rights Reserved.
*
* 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
* on the rights to use, copy, modify, merge, publish, distribute, sub
* license, 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 (including the next
* paragraph) 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 NON-INFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS AND/OR THEIR SUPPLIERS 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 dri_util.c
* DRI utility functions.
*
* This module acts as glue between GLX and the actual hardware driver. A DRI
* driver doesn't really \e have to use any of this - it's optional. But, some
* useful stuff is done here that otherwise would have to be duplicated in most
* drivers.
*
* Basically, these utility functions take care of some of the dirty details of
* screen initialization, context creation, context binding, DRM setup, etc.
*
* These functions are compiled into each DRI driver so libGL.so knows nothing
* about them.
*/
#include <stdbool.h>
#include "dri_util.h"
#include "utils.h"
#include "xmlpool.h"
#include "main/mtypes.h"
#include "main/framebuffer.h"
#include "main/version.h"
#include "main/debug_output.h"
#include "main/errors.h"
#include "main/macros.h"
const char __dri2ConfigOptions[] =
DRI_CONF_BEGIN
DRI_CONF_SECTION_PERFORMANCE
DRI_CONF_VBLANK_MODE(DRI_CONF_VBLANK_DEF_INTERVAL_1)
DRI_CONF_SECTION_END
DRI_CONF_END;
/*****************************************************************/
/** \name Screen handling functions */
/*****************************************************************/
/*@{*/
static void
setupLoaderExtensions(__DRIscreen *psp,
const __DRIextension **extensions)
{
int i;
for (i = 0; extensions[i]; i++) {
if (strcmp(extensions[i]->name, __DRI_DRI2_LOADER) == 0)
psp->dri2.loader = (__DRIdri2LoaderExtension *) extensions[i];
if (strcmp(extensions[i]->name, __DRI_IMAGE_LOOKUP) == 0)
psp->dri2.image = (__DRIimageLookupExtension *) extensions[i];
if (strcmp(extensions[i]->name, __DRI_USE_INVALIDATE) == 0)
psp->dri2.useInvalidate = (__DRIuseInvalidateExtension *) extensions[i];
if (strcmp(extensions[i]->name, __DRI_SWRAST_LOADER) == 0)
psp->swrast_loader = (__DRIswrastLoaderExtension *) extensions[i];
if (strcmp(extensions[i]->name, __DRI_IMAGE_LOADER) == 0)
psp->image.loader = (__DRIimageLoaderExtension *) extensions[i];
}
}
/**
* This pointer determines which driver API we'll use in the case of the
* loader not passing us an explicit driver extensions list (that would,
* itself, contain a pointer to a driver API.)
*
* A driver's driDriverGetExtensions_drivername() can update this pointer to
* what it's returning, and a loader that is ignorant of createNewScreen2()
* will get the correct driver screen created, as long as no other
* driDriverGetExtensions() happened in between the first one and the
* createNewScreen().
*
* This allows the X Server to not require the significant dri_interface.h
* updates for doing createNewScreen2(), which would discourage backporting of
* the X Server patches to support the new loader interface.
*/
const struct __DriverAPIRec *globalDriverAPI = &driDriverAPI;
/**
* This is the first entrypoint in the driver called by the DRI driver loader
* after dlopen()ing it.
*
* It's used to create global state for the driver across contexts on the same
* Display.
*/
static __DRIscreen *
driCreateNewScreen2(int scrn, int fd,
const __DRIextension **extensions,
const __DRIextension **driver_extensions,
const __DRIconfig ***driver_configs, void *data)
{
static const __DRIextension *emptyExtensionList[] = { NULL };
__DRIscreen *psp;
psp = calloc(1, sizeof(*psp));
if (!psp)
return NULL;
/* By default, use the global driDriverAPI symbol (non-megadrivers). */
psp->driver = globalDriverAPI;
/* If the driver exposes its vtable through its extensions list
* (megadrivers), use that instead.
*/
if (driver_extensions) {
for (int i = 0; driver_extensions[i]; i++) {
if (strcmp(driver_extensions[i]->name, __DRI_DRIVER_VTABLE) == 0) {
psp->driver =
((__DRIDriverVtableExtension *)driver_extensions[i])->vtable;
}
}
}
setupLoaderExtensions(psp, extensions);
psp->loaderPrivate = data;
psp->extensions = emptyExtensionList;
psp->fd = fd;
psp->myNum = scrn;
*driver_configs = psp->driver->InitScreen(psp);
if (*driver_configs == NULL) {
free(psp);
return NULL;
}
struct gl_constants consts = { 0 };
gl_api api;
unsigned version;
api = API_OPENGLES2;
if (_mesa_override_gl_version_contextless(&consts, &api, &version))
psp->max_gl_es2_version = version;
api = API_OPENGL_COMPAT;
if (_mesa_override_gl_version_contextless(&consts, &api, &version)) {
if (api == API_OPENGL_CORE) {
psp->max_gl_core_version = version;
} else {
psp->max_gl_compat_version = version;
}
}
psp->api_mask = 0;
if (psp->max_gl_compat_version > 0)
psp->api_mask |= (1 << __DRI_API_OPENGL);
if (psp->max_gl_core_version > 0)
psp->api_mask |= (1 << __DRI_API_OPENGL_CORE);
if (psp->max_gl_es1_version > 0)
psp->api_mask |= (1 << __DRI_API_GLES);
if (psp->max_gl_es2_version > 0)
psp->api_mask |= (1 << __DRI_API_GLES2);
if (psp->max_gl_es2_version >= 30)
psp->api_mask |= (1 << __DRI_API_GLES3);
driParseOptionInfo(&psp->optionInfo, __dri2ConfigOptions);
driParseConfigFiles(&psp->optionCache, &psp->optionInfo, psp->myNum, "dri2");
return psp;
}
static __DRIscreen *
dri2CreateNewScreen(int scrn, int fd,
const __DRIextension **extensions,
const __DRIconfig ***driver_configs, void *data)
{
return driCreateNewScreen2(scrn, fd, extensions, NULL,
driver_configs, data);
}
/** swrast driver createNewScreen entrypoint. */
static __DRIscreen *
driSWRastCreateNewScreen(int scrn, const __DRIextension **extensions,
const __DRIconfig ***driver_configs, void *data)
{
return driCreateNewScreen2(scrn, -1, extensions, NULL,
driver_configs, data);
}
static __DRIscreen *
driSWRastCreateNewScreen2(int scrn, const __DRIextension **extensions,
const __DRIextension **driver_extensions,
const __DRIconfig ***driver_configs, void *data)
{
return driCreateNewScreen2(scrn, -1, extensions, driver_extensions,
driver_configs, data);
}
/**
* Destroy the per-screen private information.
*
* \internal
* This function calls __DriverAPIRec::DestroyScreen on \p screenPrivate, calls
* drmClose(), and finally frees \p screenPrivate.
*/
static void driDestroyScreen(__DRIscreen *psp)
{
if (psp) {
/* No interaction with the X-server is possible at this point. This
* routine is called after XCloseDisplay, so there is no protocol
* stream open to the X-server anymore.
*/
psp->driver->DestroyScreen(psp);
driDestroyOptionCache(&psp->optionCache);
driDestroyOptionInfo(&psp->optionInfo);
free(psp);
}
}
static const __DRIextension **driGetExtensions(__DRIscreen *psp)
{
return psp->extensions;
}
/*@}*/
static bool
validate_context_version(__DRIscreen *screen,
int mesa_api,
unsigned major_version,
unsigned minor_version,
unsigned *dri_ctx_error)
{
unsigned req_version = 10 * major_version + minor_version;
unsigned max_version = 0;
switch (mesa_api) {
case API_OPENGL_COMPAT:
max_version = screen->max_gl_compat_version;
break;
case API_OPENGL_CORE:
max_version = screen->max_gl_core_version;
break;
case API_OPENGLES:
max_version = screen->max_gl_es1_version;
break;
case API_OPENGLES2:
max_version = screen->max_gl_es2_version;
break;
default:
max_version = 0;
break;
}
if (max_version == 0) {
*dri_ctx_error = __DRI_CTX_ERROR_BAD_API;
return false;
} else if (req_version > max_version) {
*dri_ctx_error = __DRI_CTX_ERROR_BAD_VERSION;
return false;
}
return true;
}
/*****************************************************************/
/** \name Context handling functions */
/*****************************************************************/
/*@{*/
static __DRIcontext *
driCreateContextAttribs(__DRIscreen *screen, int api,
const __DRIconfig *config,
__DRIcontext *shared,
unsigned num_attribs,
const uint32_t *attribs,
unsigned *error,
void *data)
{
__DRIcontext *context;
const struct gl_config *modes = (config != NULL) ? &config->modes : NULL;
void *shareCtx = (shared != NULL) ? shared->driverPrivate : NULL;
gl_api mesa_api;
unsigned major_version = 1;
unsigned minor_version = 0;
uint32_t flags = 0;
bool notify_reset = false;
assert((num_attribs == 0) || (attribs != NULL));
if (!(screen->api_mask & (1 << api))) {
*error = __DRI_CTX_ERROR_BAD_API;
return NULL;
}
switch (api) {
case __DRI_API_OPENGL:
mesa_api = API_OPENGL_COMPAT;
break;
case __DRI_API_GLES:
mesa_api = API_OPENGLES;
break;
case __DRI_API_GLES2:
case __DRI_API_GLES3:
mesa_api = API_OPENGLES2;
break;
case __DRI_API_OPENGL_CORE:
mesa_api = API_OPENGL_CORE;
break;
default:
*error = __DRI_CTX_ERROR_BAD_API;
return NULL;
}
for (unsigned i = 0; i < num_attribs; i++) {
switch (attribs[i * 2]) {
case __DRI_CTX_ATTRIB_MAJOR_VERSION:
major_version = attribs[i * 2 + 1];
break;
case __DRI_CTX_ATTRIB_MINOR_VERSION:
minor_version = attribs[i * 2 + 1];
break;
case __DRI_CTX_ATTRIB_FLAGS:
flags = attribs[i * 2 + 1];
break;
case __DRI_CTX_ATTRIB_RESET_STRATEGY:
notify_reset = (attribs[i * 2 + 1]
!= __DRI_CTX_RESET_NO_NOTIFICATION);
break;
default:
/* We can't create a context that satisfies the requirements of an
* attribute that we don't understand. Return failure.
*/
assert(!"Should not get here.");
*error = __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE;
return NULL;
}
}
/* Mesa does not support the GL_ARB_compatibilty extension or the
* compatibility profile. This means that we treat a API_OPENGL_COMPAT 3.1 as
* API_OPENGL_CORE and reject API_OPENGL_COMPAT 3.2+.
*/
if (mesa_api == API_OPENGL_COMPAT && major_version == 3 && minor_version == 1)
mesa_api = API_OPENGL_CORE;
if (mesa_api == API_OPENGL_COMPAT
&& ((major_version > 3)
|| (major_version == 3 && minor_version >= 2))) {
*error = __DRI_CTX_ERROR_BAD_API;
return NULL;
}
/* The latest version of EGL_KHR_create_context spec says:
*
* "If the EGL_CONTEXT_OPENGL_DEBUG_BIT_KHR flag bit is set in
* EGL_CONTEXT_FLAGS_KHR, then a <debug context> will be created.
* [...] This bit is supported for OpenGL and OpenGL ES contexts.
*
* No other EGL_CONTEXT_OPENGL_*_BIT is legal for an ES context.
*
* However, Mesa's EGL layer translates the context attribute
* EGL_CONTEXT_OPENGL_ROBUST_ACCESS into the context flag
* __DRI_CTX_FLAG_ROBUST_BUFFER_ACCESS. That attribute is legal for ES
* (with EGL 1.5 or EGL_EXT_create_context_robustness) and GL (only with
* EGL 1.5).
*
* From the EGL_EXT_create_context_robustness spec:
*
* This extension is written against the OpenGL ES 2.0 Specification
* but can apply to OpenGL ES 1.1 and up.
*
* From the EGL 1.5 (2014.08.27) spec, p55:
*
* If the EGL_CONTEXT_OPENGL_ROBUST_ACCESS attribute is set to
* EGL_TRUE, a context supporting robust buffer access will be created.
* OpenGL contexts must support the GL_ARB_robustness extension, or
* equivalent core API functional- ity. OpenGL ES contexts must support
* the GL_EXT_robustness extension, or equivalent core API
* functionality.
*/
if (mesa_api != API_OPENGL_COMPAT
&& mesa_api != API_OPENGL_CORE
&& (flags & ~(__DRI_CTX_FLAG_DEBUG |
__DRI_CTX_FLAG_ROBUST_BUFFER_ACCESS))) {
*error = __DRI_CTX_ERROR_BAD_FLAG;
return NULL;
}
/* There are no forward-compatible contexts before OpenGL 3.0. The
* GLX_ARB_create_context spec says:
*
* "Forward-compatible contexts are defined only for OpenGL versions
* 3.0 and later."
*
* Forward-looking contexts are supported by silently converting the
* requested API to API_OPENGL_CORE.
*
* In Mesa, a debug context is the same as a regular context.
*/
if ((flags & __DRI_CTX_FLAG_FORWARD_COMPATIBLE) != 0) {
mesa_api = API_OPENGL_CORE;
}
const uint32_t allowed_flags = (__DRI_CTX_FLAG_DEBUG
| __DRI_CTX_FLAG_FORWARD_COMPATIBLE
| __DRI_CTX_FLAG_ROBUST_BUFFER_ACCESS);
if (flags & ~allowed_flags) {
*error = __DRI_CTX_ERROR_UNKNOWN_FLAG;
return NULL;
}
if (!validate_context_version(screen, mesa_api,
major_version, minor_version, error))
return NULL;
context = calloc(1, sizeof *context);
if (!context) {
*error = __DRI_CTX_ERROR_NO_MEMORY;
return NULL;
}
context->loaderPrivate = data;
context->driScreenPriv = screen;
context->driDrawablePriv = NULL;
context->driReadablePriv = NULL;
if (!screen->driver->CreateContext(mesa_api, modes, context,
major_version, minor_version,
flags, notify_reset, error, shareCtx)) {
free(context);
return NULL;
}
*error = __DRI_CTX_ERROR_SUCCESS;
return context;
}
void
driContextSetFlags(struct gl_context *ctx, uint32_t flags)
{
if ((flags & __DRI_CTX_FLAG_FORWARD_COMPATIBLE) != 0)
ctx->Const.ContextFlags |= GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT;
if ((flags & __DRI_CTX_FLAG_DEBUG) != 0) {
_mesa_set_debug_state_int(ctx, GL_DEBUG_OUTPUT, GL_TRUE);
ctx->Const.ContextFlags |= GL_CONTEXT_FLAG_DEBUG_BIT;
}
}
static __DRIcontext *
driCreateNewContextForAPI(__DRIscreen *screen, int api,
const __DRIconfig *config,
__DRIcontext *shared, void *data)
{
unsigned error;
return driCreateContextAttribs(screen, api, config, shared, 0, NULL,
&error, data);
}
static __DRIcontext *
driCreateNewContext(__DRIscreen *screen, const __DRIconfig *config,
__DRIcontext *shared, void *data)
{
return driCreateNewContextForAPI(screen, __DRI_API_OPENGL,
config, shared, data);
}
/**
* Destroy the per-context private information.
*
* \internal
* This function calls __DriverAPIRec::DestroyContext on \p contextPrivate, calls
* drmDestroyContext(), and finally frees \p contextPrivate.
*/
static void
driDestroyContext(__DRIcontext *pcp)
{
if (pcp) {
pcp->driScreenPriv->driver->DestroyContext(pcp);
free(pcp);
}
}
static int
driCopyContext(__DRIcontext *dest, __DRIcontext *src, unsigned long mask)
{
(void) dest;
(void) src;
(void) mask;
return GL_FALSE;
}
/*@}*/
/*****************************************************************/
/** \name Context (un)binding functions */
/*****************************************************************/
/*@{*/
static void dri_get_drawable(__DRIdrawable *pdp);
static void dri_put_drawable(__DRIdrawable *pdp);
/**
* This function takes both a read buffer and a draw buffer. This is needed
* for \c glXMakeCurrentReadSGI or GLX 1.3's \c glXMakeContextCurrent
* function.
*/
static int driBindContext(__DRIcontext *pcp,
__DRIdrawable *pdp,
__DRIdrawable *prp)
{
/*
** Assume error checking is done properly in glXMakeCurrent before
** calling driUnbindContext.
*/
if (!pcp)
return GL_FALSE;
/* Bind the drawable to the context */
pcp->driDrawablePriv = pdp;
pcp->driReadablePriv = prp;
if (pdp) {
pdp->driContextPriv = pcp;
dri_get_drawable(pdp);
}
if (prp && pdp != prp) {
dri_get_drawable(prp);
}
return pcp->driScreenPriv->driver->MakeCurrent(pcp, pdp, prp);
}
/**
* Unbind context.
*
* \param scrn the screen.
* \param gc context.
*
* \return \c GL_TRUE on success, or \c GL_FALSE on failure.
*
* \internal
* This function calls __DriverAPIRec::UnbindContext, and then decrements
* __DRIdrawableRec::refcount which must be non-zero for a successful
* return.
*
* While casting the opaque private pointers associated with the parameters
* into their respective real types it also assures they are not \c NULL.
*/
static int driUnbindContext(__DRIcontext *pcp)
{
__DRIdrawable *pdp;
__DRIdrawable *prp;
/*
** Assume error checking is done properly in glXMakeCurrent before
** calling driUnbindContext.
*/
if (pcp == NULL)
return GL_FALSE;
/*
** Call driUnbindContext before checking for valid drawables
** to handle surfaceless contexts properly.
*/
pcp->driScreenPriv->driver->UnbindContext(pcp);
pdp = pcp->driDrawablePriv;
prp = pcp->driReadablePriv;
/* already unbound */
if (!pdp && !prp)
return GL_TRUE;
assert(pdp);
if (pdp->refcount == 0) {
/* ERROR!!! */
return GL_FALSE;
}
dri_put_drawable(pdp);
if (prp != pdp) {
if (prp->refcount == 0) {
/* ERROR!!! */
return GL_FALSE;
}
dri_put_drawable(prp);
}
pcp->driDrawablePriv = NULL;
pcp->driReadablePriv = NULL;
return GL_TRUE;
}
/*@}*/
static void dri_get_drawable(__DRIdrawable *pdp)
{
pdp->refcount++;
}
static void dri_put_drawable(__DRIdrawable *pdp)
{
if (pdp) {
pdp->refcount--;
if (pdp->refcount)
return;
pdp->driScreenPriv->driver->DestroyBuffer(pdp);
free(pdp);
}
}
static __DRIdrawable *
driCreateNewDrawable(__DRIscreen *screen,
const __DRIconfig *config,
void *data)
{
__DRIdrawable *pdraw;
assert(data != NULL);
pdraw = malloc(sizeof *pdraw);
if (!pdraw)
return NULL;
pdraw->loaderPrivate = data;
pdraw->driScreenPriv = screen;
pdraw->driContextPriv = NULL;
pdraw->refcount = 0;
pdraw->lastStamp = 0;
pdraw->w = 0;
pdraw->h = 0;
dri_get_drawable(pdraw);
if (!screen->driver->CreateBuffer(screen, pdraw, &config->modes,
GL_FALSE)) {
free(pdraw);
return NULL;
}
pdraw->dri2.stamp = pdraw->lastStamp + 1;
return pdraw;
}
static void
driDestroyDrawable(__DRIdrawable *pdp)
{
/*
* The loader's data structures are going away, even if pdp itself stays
* around for the time being because it is currently bound. This happens
* when a currently bound GLX pixmap is destroyed.
*
* Clear out the pointer back into the loader's data structures to avoid
* accessing an outdated pointer.
*/
pdp->loaderPrivate = NULL;
dri_put_drawable(pdp);
}
static __DRIbuffer *
dri2AllocateBuffer(__DRIscreen *screen,
unsigned int attachment, unsigned int format,
int width, int height)
{
return screen->driver->AllocateBuffer(screen, attachment, format,
width, height);
}
static void
dri2ReleaseBuffer(__DRIscreen *screen, __DRIbuffer *buffer)
{
screen->driver->ReleaseBuffer(screen, buffer);
}
static int
dri2ConfigQueryb(__DRIscreen *screen, const char *var, unsigned char *val)
{
if (!driCheckOption(&screen->optionCache, var, DRI_BOOL))
return -1;
*val = driQueryOptionb(&screen->optionCache, var);
return 0;
}
static int
dri2ConfigQueryi(__DRIscreen *screen, const char *var, int *val)
{
if (!driCheckOption(&screen->optionCache, var, DRI_INT) &&
!driCheckOption(&screen->optionCache, var, DRI_ENUM))
return -1;
*val = driQueryOptioni(&screen->optionCache, var);
return 0;
}
static int
dri2ConfigQueryf(__DRIscreen *screen, const char *var, float *val)
{
if (!driCheckOption(&screen->optionCache, var, DRI_FLOAT))
return -1;
*val = driQueryOptionf(&screen->optionCache, var);
return 0;
}
static unsigned int
driGetAPIMask(__DRIscreen *screen)
{
return screen->api_mask;
}
/**
* swrast swapbuffers entrypoint.
*
* DRI2 implements this inside the loader with only flushes handled by the
* driver.
*/
static void
driSwapBuffers(__DRIdrawable *pdp)
{
assert(pdp->driScreenPriv->swrast_loader);
pdp->driScreenPriv->driver->SwapBuffers(pdp);
}
/** Core interface */
const __DRIcoreExtension driCoreExtension = {
.base = { __DRI_CORE, 1 },
.createNewScreen = NULL,
.destroyScreen = driDestroyScreen,
.getExtensions = driGetExtensions,
.getConfigAttrib = driGetConfigAttrib,
.indexConfigAttrib = driIndexConfigAttrib,
.createNewDrawable = NULL,
.destroyDrawable = driDestroyDrawable,
.swapBuffers = driSwapBuffers, /* swrast */
.createNewContext = driCreateNewContext, /* swrast */
.copyContext = driCopyContext,
.destroyContext = driDestroyContext,
.bindContext = driBindContext,
.unbindContext = driUnbindContext
};
/** DRI2 interface */
const __DRIdri2Extension driDRI2Extension = {
.base = { __DRI_DRI2, 4 },
.createNewScreen = dri2CreateNewScreen,
.createNewDrawable = driCreateNewDrawable,
.createNewContext = driCreateNewContext,
.getAPIMask = driGetAPIMask,
.createNewContextForAPI = driCreateNewContextForAPI,
.allocateBuffer = dri2AllocateBuffer,
.releaseBuffer = dri2ReleaseBuffer,
.createContextAttribs = driCreateContextAttribs,
.createNewScreen2 = driCreateNewScreen2,
};
const __DRIswrastExtension driSWRastExtension = {
.base = { __DRI_SWRAST, 4 },
.createNewScreen = driSWRastCreateNewScreen,
.createNewDrawable = driCreateNewDrawable,
.createNewContextForAPI = driCreateNewContextForAPI,
.createContextAttribs = driCreateContextAttribs,
.createNewScreen2 = driSWRastCreateNewScreen2,
};
const __DRI2configQueryExtension dri2ConfigQueryExtension = {
.base = { __DRI2_CONFIG_QUERY, 1 },
.configQueryb = dri2ConfigQueryb,
.configQueryi = dri2ConfigQueryi,
.configQueryf = dri2ConfigQueryf,
};
void
dri2InvalidateDrawable(__DRIdrawable *drawable)
{
drawable->dri2.stamp++;
}
/**
* 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);
}
}
uint32_t
driGLFormatToImageFormat(mesa_format format)
{
switch (format) {
case MESA_FORMAT_B5G6R5_UNORM:
return __DRI_IMAGE_FORMAT_RGB565;
case MESA_FORMAT_B5G5R5A1_UNORM:
return __DRI_IMAGE_FORMAT_ARGB1555;
case MESA_FORMAT_B8G8R8X8_UNORM:
return __DRI_IMAGE_FORMAT_XRGB8888;
case MESA_FORMAT_B10G10R10A2_UNORM:
return __DRI_IMAGE_FORMAT_ARGB2101010;
case MESA_FORMAT_B10G10R10X2_UNORM:
return __DRI_IMAGE_FORMAT_XRGB2101010;
case MESA_FORMAT_B8G8R8A8_UNORM:
return __DRI_IMAGE_FORMAT_ARGB8888;
case MESA_FORMAT_R8G8B8A8_UNORM:
return __DRI_IMAGE_FORMAT_ABGR8888;
case MESA_FORMAT_R8G8B8X8_UNORM:
return __DRI_IMAGE_FORMAT_XBGR8888;
case MESA_FORMAT_L_UNORM8:
case MESA_FORMAT_R_UNORM8:
return __DRI_IMAGE_FORMAT_R8;
case MESA_FORMAT_L8A8_UNORM:
case MESA_FORMAT_R8G8_UNORM:
return __DRI_IMAGE_FORMAT_GR88;
case MESA_FORMAT_NONE:
return __DRI_IMAGE_FORMAT_NONE;
case MESA_FORMAT_B8G8R8A8_SRGB:
return __DRI_IMAGE_FORMAT_SARGB8;
default:
return 0;
}
}
mesa_format
driImageFormatToGLFormat(uint32_t image_format)
{
switch (image_format) {
case __DRI_IMAGE_FORMAT_RGB565:
return MESA_FORMAT_B5G6R5_UNORM;
case __DRI_IMAGE_FORMAT_ARGB1555:
return MESA_FORMAT_B5G5R5A1_UNORM;
case __DRI_IMAGE_FORMAT_XRGB8888:
return MESA_FORMAT_B8G8R8X8_UNORM;
case __DRI_IMAGE_FORMAT_ARGB2101010:
return MESA_FORMAT_B10G10R10A2_UNORM;
case __DRI_IMAGE_FORMAT_XRGB2101010:
return MESA_FORMAT_B10G10R10X2_UNORM;
case __DRI_IMAGE_FORMAT_ARGB8888:
return MESA_FORMAT_B8G8R8A8_UNORM;
case __DRI_IMAGE_FORMAT_ABGR8888:
return MESA_FORMAT_R8G8B8A8_UNORM;
case __DRI_IMAGE_FORMAT_XBGR8888:
return MESA_FORMAT_R8G8B8X8_UNORM;
case __DRI_IMAGE_FORMAT_R8:
return MESA_FORMAT_R_UNORM8;
case __DRI_IMAGE_FORMAT_GR88:
return MESA_FORMAT_R8G8_UNORM;
case __DRI_IMAGE_FORMAT_SARGB8:
return MESA_FORMAT_B8G8R8A8_SRGB;
case __DRI_IMAGE_FORMAT_NONE:
return MESA_FORMAT_NONE;
default:
return MESA_FORMAT_NONE;
}
}
/** Image driver interface */
const __DRIimageDriverExtension driImageDriverExtension = {
.base = { __DRI_IMAGE_DRIVER, 1 },
.createNewScreen2 = driCreateNewScreen2,
.createNewDrawable = driCreateNewDrawable,
.getAPIMask = driGetAPIMask,
.createContextAttribs = driCreateContextAttribs,
};
/* swrast copy sub buffer entrypoint. */
static void driCopySubBuffer(__DRIdrawable *pdp, int x, int y,
int w, int h)
{
assert(pdp->driScreenPriv->swrast_loader);
pdp->driScreenPriv->driver->CopySubBuffer(pdp, x, y, w, h);
}
/* for swrast only */
const __DRIcopySubBufferExtension driCopySubBufferExtension = {
.base = { __DRI_COPY_SUB_BUFFER, 1 },
.copySubBuffer = driCopySubBuffer,
};