xenocara/xserver/glx/glxdriswrast.c
matthieu e927c03e30 Update to xserver 1.18.3. Tested by shadchin@ and naddy@.
Note that indirect GLX is now disbled by default.
2016-05-29 12:02:34 +00:00

530 lines
16 KiB
C

/*
* Copyright © 2008 George Sapountzis <gsap7@yahoo.gr>
* Copyright © 2008 Red Hat, Inc
*
* Permission to use, copy, modify, distribute, and sell this software
* and its documentation for any purpose is hereby granted without
* fee, provided that the above copyright notice appear in all copies
* and that both that copyright notice and this permission notice
* appear in supporting documentation, and that the name of the
* copyright holders not be used in advertising or publicity
* pertaining to distribution of the software without specific,
* written prior permission. The copyright holders make no
* representations about the suitability of this software for any
* purpose. It is provided "as is" without express or implied
* warranty.
*
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
* SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
* SOFTWARE.
*/
#ifdef HAVE_DIX_CONFIG_H
#include <dix-config.h>
#endif
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <sys/time.h>
#include <dlfcn.h>
#include <GL/gl.h>
#include <GL/internal/dri_interface.h>
#include <GL/glxtokens.h>
#include "scrnintstr.h"
#include "pixmapstr.h"
#include "gcstruct.h"
#include "os.h"
#include "glxserver.h"
#include "glxutil.h"
#include "glxdricommon.h"
#include "extension_string.h"
/* RTLD_LOCAL is not defined on Cygwin */
#ifdef __CYGWIN__
#ifndef RTLD_LOCAL
#define RTLD_LOCAL 0
#endif
#endif
typedef struct __GLXDRIscreen __GLXDRIscreen;
typedef struct __GLXDRIcontext __GLXDRIcontext;
typedef struct __GLXDRIdrawable __GLXDRIdrawable;
struct __GLXDRIscreen {
__GLXscreen base;
__DRIscreen *driScreen;
void *driver;
const __DRIcoreExtension *core;
const __DRIswrastExtension *swrast;
const __DRIcopySubBufferExtension *copySubBuffer;
const __DRItexBufferExtension *texBuffer;
const __DRIconfig **driConfigs;
unsigned char glx_enable_bits[__GLX_EXT_BYTES];
};
struct __GLXDRIcontext {
__GLXcontext base;
__DRIcontext *driContext;
};
struct __GLXDRIdrawable {
__GLXdrawable base;
__DRIdrawable *driDrawable;
__GLXDRIscreen *screen;
GCPtr gc; /* scratch GC for span drawing */
GCPtr swapgc; /* GC for swapping the color buffers */
};
static void
__glXDRIdrawableDestroy(__GLXdrawable * drawable)
{
__GLXDRIdrawable *private = (__GLXDRIdrawable *) drawable;
const __DRIcoreExtension *core = private->screen->core;
(*core->destroyDrawable) (private->driDrawable);
FreeGC(private->gc, (GContext) 0);
FreeGC(private->swapgc, (GContext) 0);
__glXDrawableRelease(drawable);
free(private);
}
static GLboolean
__glXDRIdrawableSwapBuffers(ClientPtr client, __GLXdrawable * drawable)
{
__GLXDRIdrawable *private = (__GLXDRIdrawable *) drawable;
const __DRIcoreExtension *core = private->screen->core;
(*core->swapBuffers) (private->driDrawable);
return TRUE;
}
static void
__glXDRIdrawableCopySubBuffer(__GLXdrawable * basePrivate,
int x, int y, int w, int h)
{
__GLXDRIdrawable *private = (__GLXDRIdrawable *) basePrivate;
const __DRIcopySubBufferExtension *copySubBuffer =
private->screen->copySubBuffer;
if (copySubBuffer)
(*copySubBuffer->copySubBuffer) (private->driDrawable, x, y, w, h);
}
static void
__glXDRIcontextDestroy(__GLXcontext * baseContext)
{
__GLXDRIcontext *context = (__GLXDRIcontext *) baseContext;
__GLXDRIscreen *screen = (__GLXDRIscreen *) context->base.pGlxScreen;
(*screen->core->destroyContext) (context->driContext);
__glXContextDestroy(&context->base);
free(context);
}
static int
__glXDRIcontextMakeCurrent(__GLXcontext * baseContext)
{
__GLXDRIcontext *context = (__GLXDRIcontext *) baseContext;
__GLXDRIdrawable *draw = (__GLXDRIdrawable *) baseContext->drawPriv;
__GLXDRIdrawable *read = (__GLXDRIdrawable *) baseContext->readPriv;
__GLXDRIscreen *screen = (__GLXDRIscreen *) context->base.pGlxScreen;
return (*screen->core->bindContext) (context->driContext,
draw->driDrawable, read->driDrawable);
}
static int
__glXDRIcontextLoseCurrent(__GLXcontext * baseContext)
{
__GLXDRIcontext *context = (__GLXDRIcontext *) baseContext;
__GLXDRIscreen *screen = (__GLXDRIscreen *) context->base.pGlxScreen;
return (*screen->core->unbindContext) (context->driContext);
}
static int
__glXDRIcontextCopy(__GLXcontext * baseDst, __GLXcontext * baseSrc,
unsigned long mask)
{
__GLXDRIcontext *dst = (__GLXDRIcontext *) baseDst;
__GLXDRIcontext *src = (__GLXDRIcontext *) baseSrc;
__GLXDRIscreen *screen = (__GLXDRIscreen *) dst->base.pGlxScreen;
return (*screen->core->copyContext) (dst->driContext,
src->driContext, mask);
}
static int
__glXDRIbindTexImage(__GLXcontext * baseContext,
int buffer, __GLXdrawable * glxPixmap)
{
__GLXDRIdrawable *drawable = (__GLXDRIdrawable *) glxPixmap;
const __DRItexBufferExtension *texBuffer = drawable->screen->texBuffer;
__GLXDRIcontext *context = (__GLXDRIcontext *) baseContext;
if (texBuffer == NULL)
return Success;
#if __DRI_TEX_BUFFER_VERSION >= 2
if (texBuffer->base.version >= 2 && texBuffer->setTexBuffer2 != NULL) {
(*texBuffer->setTexBuffer2) (context->driContext,
glxPixmap->target,
glxPixmap->format, drawable->driDrawable);
}
else
#endif
texBuffer->setTexBuffer(context->driContext,
glxPixmap->target, drawable->driDrawable);
return Success;
}
static int
__glXDRIreleaseTexImage(__GLXcontext * baseContext,
int buffer, __GLXdrawable * pixmap)
{
/* FIXME: Just unbind the texture? */
return Success;
}
static __GLXtextureFromPixmap __glXDRItextureFromPixmap = {
__glXDRIbindTexImage,
__glXDRIreleaseTexImage
};
static void
__glXDRIscreenDestroy(__GLXscreen * baseScreen)
{
int i;
__GLXDRIscreen *screen = (__GLXDRIscreen *) baseScreen;
(*screen->core->destroyScreen) (screen->driScreen);
dlclose(screen->driver);
__glXScreenDestroy(baseScreen);
if (screen->driConfigs) {
for (i = 0; screen->driConfigs[i] != NULL; i++)
free((__DRIconfig **) screen->driConfigs[i]);
free(screen->driConfigs);
}
free(screen);
}
static __GLXcontext *
__glXDRIscreenCreateContext(__GLXscreen * baseScreen,
__GLXconfig * glxConfig,
__GLXcontext * baseShareContext,
unsigned num_attribs,
const uint32_t *attribs,
int *error)
{
__GLXDRIscreen *screen = (__GLXDRIscreen *) baseScreen;
__GLXDRIcontext *context, *shareContext;
__GLXDRIconfig *config = (__GLXDRIconfig *) glxConfig;
const __DRIcoreExtension *core = screen->core;
__DRIcontext *driShare;
/* DRISWRAST won't support createContextAttribs, so these parameters will
* never be used.
*/
(void) num_attribs;
(void) attribs;
(void) error;
shareContext = (__GLXDRIcontext *) baseShareContext;
if (shareContext)
driShare = shareContext->driContext;
else
driShare = NULL;
context = calloc(1, sizeof *context);
if (context == NULL)
return NULL;
context->base.destroy = __glXDRIcontextDestroy;
context->base.makeCurrent = __glXDRIcontextMakeCurrent;
context->base.loseCurrent = __glXDRIcontextLoseCurrent;
context->base.copy = __glXDRIcontextCopy;
context->base.textureFromPixmap = &__glXDRItextureFromPixmap;
context->driContext =
(*core->createNewContext) (screen->driScreen,
config->driConfig, driShare, context);
return &context->base;
}
static __GLXdrawable *
__glXDRIscreenCreateDrawable(ClientPtr client,
__GLXscreen * screen,
DrawablePtr pDraw,
XID drawId,
int type, XID glxDrawId, __GLXconfig * glxConfig)
{
XID gcvals[2];
int status;
__GLXDRIscreen *driScreen = (__GLXDRIscreen *) screen;
__GLXDRIconfig *config = (__GLXDRIconfig *) glxConfig;
__GLXDRIdrawable *private;
private = calloc(1, sizeof *private);
if (private == NULL)
return NULL;
private->screen = driScreen;
if (!__glXDrawableInit(&private->base, screen,
pDraw, type, glxDrawId, glxConfig)) {
free(private);
return NULL;
}
private->base.destroy = __glXDRIdrawableDestroy;
private->base.swapBuffers = __glXDRIdrawableSwapBuffers;
private->base.copySubBuffer = __glXDRIdrawableCopySubBuffer;
gcvals[0] = GXcopy;
private->gc =
CreateGC(pDraw, GCFunction, gcvals, &status, (XID) 0, serverClient);
gcvals[1] = FALSE;
private->swapgc =
CreateGC(pDraw, GCFunction | GCGraphicsExposures, gcvals, &status,
(XID) 0, serverClient);
private->driDrawable =
(*driScreen->swrast->createNewDrawable) (driScreen->driScreen,
config->driConfig, private);
return &private->base;
}
static void
swrastGetDrawableInfo(__DRIdrawable * draw,
int *x, int *y, int *w, int *h, void *loaderPrivate)
{
__GLXDRIdrawable *drawable = loaderPrivate;
DrawablePtr pDraw = drawable->base.pDraw;
*x = pDraw->x;
*y = pDraw->y;
*w = pDraw->width;
*h = pDraw->height;
}
static void
swrastPutImage(__DRIdrawable * draw, int op,
int x, int y, int w, int h, char *data, void *loaderPrivate)
{
__GLXDRIdrawable *drawable = loaderPrivate;
DrawablePtr pDraw = drawable->base.pDraw;
GCPtr gc;
__GLXcontext *cx = lastGLContext;
switch (op) {
case __DRI_SWRAST_IMAGE_OP_DRAW:
gc = drawable->gc;
break;
case __DRI_SWRAST_IMAGE_OP_SWAP:
gc = drawable->swapgc;
break;
default:
return;
}
ValidateGC(pDraw, gc);
gc->ops->PutImage(pDraw, gc, pDraw->depth, x, y, w, h, 0, ZPixmap, data);
if (cx != lastGLContext) {
lastGLContext = cx;
cx->makeCurrent(cx);
}
}
static void
swrastGetImage(__DRIdrawable * draw,
int x, int y, int w, int h, char *data, void *loaderPrivate)
{
__GLXDRIdrawable *drawable = loaderPrivate;
DrawablePtr pDraw = drawable->base.pDraw;
ScreenPtr pScreen = pDraw->pScreen;
__GLXcontext *cx = lastGLContext;
pScreen->GetImage(pDraw, x, y, w, h, ZPixmap, ~0L, data);
if (cx != lastGLContext) {
lastGLContext = cx;
cx->makeCurrent(cx);
}
}
static const __DRIswrastLoaderExtension swrastLoaderExtension = {
{__DRI_SWRAST_LOADER, 1},
swrastGetDrawableInfo,
swrastPutImage,
swrastGetImage
};
static const __DRIextension *loader_extensions[] = {
&systemTimeExtension.base,
&swrastLoaderExtension.base,
NULL
};
static void
initializeExtensions(__GLXDRIscreen * screen)
{
const __DRIextension **extensions;
int i;
__glXEnableExtension(screen->glx_enable_bits, "GLX_MESA_copy_sub_buffer");
LogMessage(X_INFO, "AIGLX: enabled GLX_MESA_copy_sub_buffer\n");
if (screen->swrast->base.version >= 3) {
__glXEnableExtension(screen->glx_enable_bits,
"GLX_ARB_create_context");
__glXEnableExtension(screen->glx_enable_bits,
"GLX_ARB_create_context_profile");
__glXEnableExtension(screen->glx_enable_bits,
"GLX_EXT_create_context_es_profile");
__glXEnableExtension(screen->glx_enable_bits,
"GLX_EXT_create_context_es2_profile");
}
/* these are harmless to enable unconditionally */
__glXEnableExtension(screen->glx_enable_bits, "GLX_EXT_framebuffer_sRGB");
__glXEnableExtension(screen->glx_enable_bits, "GLX_ARB_fbconfig_float");
__glXEnableExtension(screen->glx_enable_bits, "GLX_EXT_fbconfig_packed_float");
__glXEnableExtension(screen->glx_enable_bits, "GLX_SGI_make_current_read");
extensions = screen->core->getExtensions(screen->driScreen);
for (i = 0; extensions[i]; i++) {
if (strcmp(extensions[i]->name, __DRI_COPY_SUB_BUFFER) == 0) {
screen->copySubBuffer =
(const __DRIcopySubBufferExtension *) extensions[i];
}
if (strcmp(extensions[i]->name, __DRI_TEX_BUFFER) == 0) {
screen->texBuffer = (const __DRItexBufferExtension *) extensions[i];
/* GLX_EXT_texture_from_pixmap is always enabled. */
}
#ifdef __DRI2_FLUSH_CONTROL
if (strcmp(extensions[i]->name, __DRI2_FLUSH_CONTROL) == 0) {
__glXEnableExtension(screen->glx_enable_bits,
"GLX_ARB_context_flush_control\n");
}
#endif
}
}
/* white lie */
extern glx_func_ptr glXGetProcAddressARB(const char *);
static __GLXscreen *
__glXDRIscreenProbe(ScreenPtr pScreen)
{
const char *driverName = "swrast";
__GLXDRIscreen *screen;
size_t buffer_size;
screen = calloc(1, sizeof *screen);
if (screen == NULL)
return NULL;
screen->base.destroy = __glXDRIscreenDestroy;
screen->base.createContext = __glXDRIscreenCreateContext;
screen->base.createDrawable = __glXDRIscreenCreateDrawable;
screen->base.swapInterval = NULL;
screen->base.pScreen = pScreen;
__glXInitExtensionEnableBits(screen->glx_enable_bits);
screen->driver = glxProbeDriver(driverName,
(void **) &screen->core,
__DRI_CORE, 1,
(void **) &screen->swrast,
__DRI_SWRAST, 1);
if (screen->driver == NULL) {
goto handle_error;
}
screen->driScreen =
(*screen->swrast->createNewScreen) (pScreen->myNum,
loader_extensions,
&screen->driConfigs, screen);
if (screen->driScreen == NULL) {
LogMessage(X_ERROR, "AIGLX error: Calling driver entry point failed\n");
goto handle_error;
}
initializeExtensions(screen);
screen->base.fbconfigs = glxConvertConfigs(screen->core, screen->driConfigs,
GLX_WINDOW_BIT |
GLX_PIXMAP_BIT |
GLX_PBUFFER_BIT);
__glXScreenInit(&screen->base, pScreen);
/* The first call simply determines the length of the extension string.
* This allows us to allocate some memory to hold the extension string,
* but it requires that we call __glXGetExtensionString a second time.
*/
buffer_size = __glXGetExtensionString(screen->glx_enable_bits, NULL);
if (buffer_size > 0) {
free(screen->base.GLXextensions);
screen->base.GLXextensions = xnfalloc(buffer_size);
(void) __glXGetExtensionString(screen->glx_enable_bits,
screen->base.GLXextensions);
}
screen->base.GLXmajor = 1;
screen->base.GLXminor = 4;
__glXsetGetProcAddress(glXGetProcAddressARB);
LogMessage(X_INFO, "AIGLX: Loaded and initialized %s\n", driverName);
return &screen->base;
handle_error:
if (screen->driver)
dlclose(screen->driver);
free(screen);
LogMessage(X_ERROR, "GLX: could not load software renderer\n");
return NULL;
}
_X_EXPORT __GLXprovider __glXDRISWRastProvider = {
__glXDRIscreenProbe,
"DRISWRAST",
NULL
};