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xserver-multidpi/glx/glxdricommon.c
Eric Anholt 96a28e9c91 glx: Clear new FBConfig attributes to 0 by default. 
The visualSelectGroup wasn't getting set (since our DRI drivers don't
use it), and and since it's the top priority in the sort order, you
got random sorting of your visuals unless malloc really returned you
new memory.  This manifested as Xephyr -glamor rendering to a
multisampled window on my system, which as you might guess was
slightly lower performance than expected.

Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
2014-03-10 13:57:21 -07:00

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/*
* 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 <errno.h>
#include <dlfcn.h>
#include <sys/time.h>
#include <GL/gl.h>
#include <GL/glxtokens.h>
#include <GL/internal/dri_interface.h>
#include <os.h>
#include "glxserver.h"
#include "glxext.h"
#include "glxcontext.h"
#include "glxscreens.h"
#include "glxdricommon.h"
static int
getUST(int64_t * ust)
{
struct timeval tv;
if (ust == NULL)
return -EFAULT;
if (gettimeofday(&tv, NULL) == 0) {
ust[0] = (tv.tv_sec * 1000000) + tv.tv_usec;
return 0;
}
else {
return -errno;
}
}
const __DRIsystemTimeExtension systemTimeExtension = {
{__DRI_SYSTEM_TIME, 1},
getUST,
NULL,
};
#define __ATTRIB(attrib, field) \
{ attrib, offsetof(__GLXconfig, field) }
static const struct {
unsigned int attrib, offset;
} attribMap[] = {
__ATTRIB(__DRI_ATTRIB_BUFFER_SIZE, rgbBits),
__ATTRIB(__DRI_ATTRIB_LEVEL, level),
__ATTRIB(__DRI_ATTRIB_RED_SIZE, redBits),
__ATTRIB(__DRI_ATTRIB_GREEN_SIZE, greenBits),
__ATTRIB(__DRI_ATTRIB_BLUE_SIZE, blueBits),
__ATTRIB(__DRI_ATTRIB_ALPHA_SIZE, alphaBits),
__ATTRIB(__DRI_ATTRIB_DEPTH_SIZE, depthBits),
__ATTRIB(__DRI_ATTRIB_STENCIL_SIZE, stencilBits),
__ATTRIB(__DRI_ATTRIB_ACCUM_RED_SIZE, accumRedBits),
__ATTRIB(__DRI_ATTRIB_ACCUM_GREEN_SIZE, accumGreenBits),
__ATTRIB(__DRI_ATTRIB_ACCUM_BLUE_SIZE, accumBlueBits),
__ATTRIB(__DRI_ATTRIB_ACCUM_ALPHA_SIZE, accumAlphaBits),
__ATTRIB(__DRI_ATTRIB_SAMPLE_BUFFERS, sampleBuffers),
__ATTRIB(__DRI_ATTRIB_SAMPLES, samples),
__ATTRIB(__DRI_ATTRIB_DOUBLE_BUFFER, doubleBufferMode),
__ATTRIB(__DRI_ATTRIB_STEREO, stereoMode),
__ATTRIB(__DRI_ATTRIB_AUX_BUFFERS, numAuxBuffers),
__ATTRIB(__DRI_ATTRIB_TRANSPARENT_TYPE, transparentPixel),
__ATTRIB(__DRI_ATTRIB_TRANSPARENT_INDEX_VALUE, transparentPixel),
__ATTRIB(__DRI_ATTRIB_TRANSPARENT_RED_VALUE, transparentRed),
__ATTRIB(__DRI_ATTRIB_TRANSPARENT_GREEN_VALUE, transparentGreen),
__ATTRIB(__DRI_ATTRIB_TRANSPARENT_BLUE_VALUE, transparentBlue),
__ATTRIB(__DRI_ATTRIB_TRANSPARENT_ALPHA_VALUE, transparentAlpha),
__ATTRIB(__DRI_ATTRIB_RED_MASK, redMask),
__ATTRIB(__DRI_ATTRIB_GREEN_MASK, greenMask),
__ATTRIB(__DRI_ATTRIB_BLUE_MASK, blueMask),
__ATTRIB(__DRI_ATTRIB_ALPHA_MASK, alphaMask),
__ATTRIB(__DRI_ATTRIB_MAX_PBUFFER_WIDTH, maxPbufferWidth),
__ATTRIB(__DRI_ATTRIB_MAX_PBUFFER_HEIGHT, maxPbufferHeight),
__ATTRIB(__DRI_ATTRIB_MAX_PBUFFER_PIXELS, maxPbufferPixels),
__ATTRIB(__DRI_ATTRIB_OPTIMAL_PBUFFER_WIDTH, optimalPbufferWidth),
__ATTRIB(__DRI_ATTRIB_OPTIMAL_PBUFFER_HEIGHT, optimalPbufferHeight),
__ATTRIB(__DRI_ATTRIB_SWAP_METHOD, swapMethod),
__ATTRIB(__DRI_ATTRIB_BIND_TO_TEXTURE_RGB, bindToTextureRgb),
__ATTRIB(__DRI_ATTRIB_BIND_TO_TEXTURE_RGBA, bindToTextureRgba),
__ATTRIB(__DRI_ATTRIB_BIND_TO_MIPMAP_TEXTURE, bindToMipmapTexture),
__ATTRIB(__DRI_ATTRIB_YINVERTED, yInverted),
__ATTRIB(__DRI_ATTRIB_FRAMEBUFFER_SRGB_CAPABLE, sRGBCapable),
};
static void
setScalar(__GLXconfig * config, unsigned int attrib, unsigned int value)
{
int i;
for (i = 0; i < ARRAY_SIZE(attribMap); i++)
if (attribMap[i].attrib == attrib) {
*(unsigned int *) ((char *) config + attribMap[i].offset) = value;
return;
}
}
static __GLXconfig *
createModeFromConfig(const __DRIcoreExtension * core,
const __DRIconfig * driConfig,
unsigned int visualType, unsigned int drawableType)
{
__GLXDRIconfig *config;
GLint renderType = 0;
unsigned int attrib, value;
int i;
config = calloc(1, sizeof *config);
config->driConfig = driConfig;
i = 0;
while (core->indexConfigAttrib(driConfig, i++, &attrib, &value)) {
switch (attrib) {
case __DRI_ATTRIB_RENDER_TYPE:
if (value & __DRI_ATTRIB_RGBA_BIT)
renderType |= GLX_RGBA_BIT;
if (value & __DRI_ATTRIB_COLOR_INDEX_BIT)
renderType |= GLX_COLOR_INDEX_BIT;
if (value & __DRI_ATTRIB_FLOAT_BIT)
renderType |= GLX_RGBA_FLOAT_BIT_ARB;
if (value & __DRI_ATTRIB_UNSIGNED_FLOAT_BIT)
renderType |= GLX_RGBA_UNSIGNED_FLOAT_BIT_EXT;
break;
case __DRI_ATTRIB_CONFIG_CAVEAT:
if (value & __DRI_ATTRIB_NON_CONFORMANT_CONFIG)
config->config.visualRating = GLX_NON_CONFORMANT_CONFIG;
else if (value & __DRI_ATTRIB_SLOW_BIT)
config->config.visualRating = GLX_SLOW_CONFIG;
else
config->config.visualRating = GLX_NONE;
break;
case __DRI_ATTRIB_BIND_TO_TEXTURE_TARGETS:
config->config.bindToTextureTargets = 0;
if (value & __DRI_ATTRIB_TEXTURE_1D_BIT)
config->config.bindToTextureTargets |= GLX_TEXTURE_1D_BIT_EXT;
if (value & __DRI_ATTRIB_TEXTURE_2D_BIT)
config->config.bindToTextureTargets |= GLX_TEXTURE_2D_BIT_EXT;
if (value & __DRI_ATTRIB_TEXTURE_RECTANGLE_BIT)
config->config.bindToTextureTargets |=
GLX_TEXTURE_RECTANGLE_BIT_EXT;
break;
default:
setScalar(&config->config, attrib, value);
break;
}
}
config->config.next = NULL;
config->config.xRenderable = GL_TRUE;
config->config.visualType = visualType;
config->config.renderType = renderType;
config->config.drawableType = drawableType;
config->config.yInverted = GL_TRUE;
return &config->config;
}
static Bool
render_type_is_pbuffer_only(unsigned renderType)
{
/* The GL_ARB_color_buffer_float spec says:
*
* "Note that floating point rendering is only supported for
* GLXPbuffer drawables. The GLX_DRAWABLE_TYPE attribute of the
* GLXFBConfig must have the GLX_PBUFFER_BIT bit set and the
* GLX_RENDER_TYPE attribute must have the GLX_RGBA_FLOAT_BIT set."
*/
return !!(renderType & (__DRI_ATTRIB_UNSIGNED_FLOAT_BIT
| __DRI_ATTRIB_FLOAT_BIT));
}
__GLXconfig *
glxConvertConfigs(const __DRIcoreExtension * core,
const __DRIconfig ** configs, unsigned int drawableType)
{
__GLXconfig head, *tail;
int i;
tail = &head;
head.next = NULL;
for (i = 0; configs[i]; i++) {
unsigned renderType = 0;
if (core->getConfigAttrib(configs[i], __DRI_ATTRIB_RENDER_TYPE,
&renderType)) {
if (render_type_is_pbuffer_only(renderType) &&
!(drawableType & GLX_PBUFFER_BIT))
continue;
}
/* Add all the others */
tail->next = createModeFromConfig(core,
configs[i], GLX_TRUE_COLOR,
drawableType);
if (tail->next == NULL)
break;
tail = tail->next;
}
for (i = 0; configs[i]; i++) {
unsigned int renderType = 0;
if (core->getConfigAttrib(configs[i], __DRI_ATTRIB_RENDER_TYPE,
&renderType)) {
if (render_type_is_pbuffer_only(renderType) &&
!(drawableType & GLX_PBUFFER_BIT))
continue;
}
/* Add all the others */
tail->next = createModeFromConfig(core,
configs[i], GLX_DIRECT_COLOR,
drawableType);
if (tail->next == NULL)
break;
tail = tail->next;
}
return head.next;
}
static const char dri_driver_path[] = DRI_DRIVER_PATH;
/* Temporary define to allow building without a dri_interface.h from
* updated Mesa. Some day when we don't care about Mesa that old any
* more this can be removed.
*/
#ifndef __DRI_DRIVER_GET_EXTENSIONS
#define __DRI_DRIVER_GET_EXTENSIONS "__driDriverGetExtensions"
#endif
void *
glxProbeDriver(const char *driverName,
void **coreExt, const char *coreName, int coreVersion,
void **renderExt, const char *renderName, int renderVersion)
{
int i;
void *driver;
char filename[PATH_MAX];
char *get_extensions_name;
const __DRIextension **extensions = NULL;
snprintf(filename, sizeof filename, "%s/%s_dri.so",
dri_driver_path, driverName);
driver = dlopen(filename, RTLD_LAZY | RTLD_LOCAL);
if (driver == NULL) {
LogMessage(X_ERROR, "AIGLX error: dlopen of %s failed (%s)\n",
filename, dlerror());
goto cleanup_failure;
}
if (asprintf(&get_extensions_name, "%s_%s",
__DRI_DRIVER_GET_EXTENSIONS, driverName) != -1) {
const __DRIextension **(*get_extensions)(void);
get_extensions = dlsym(driver, get_extensions_name);
if (get_extensions)
extensions = get_extensions();
free(get_extensions_name);
}
if (!extensions)
extensions = dlsym(driver, __DRI_DRIVER_EXTENSIONS);
if (extensions == NULL) {
LogMessage(X_ERROR, "AIGLX error: %s exports no extensions (%s)\n",
driverName, dlerror());
goto cleanup_failure;
}
for (i = 0; extensions[i]; i++) {
if (strcmp(extensions[i]->name, coreName) == 0 &&
extensions[i]->version >= coreVersion) {
*coreExt = (void *) extensions[i];
}
if (strcmp(extensions[i]->name, renderName) == 0 &&
extensions[i]->version >= renderVersion) {
*renderExt = (void *) extensions[i];
}
}
if (*coreExt == NULL || *renderExt == NULL) {
LogMessage(X_ERROR,
"AIGLX error: %s does not export required DRI extension\n",
driverName);
goto cleanup_failure;
}
return driver;
cleanup_failure:
if (driver)
dlclose(driver);
*coreExt = *renderExt = NULL;
return NULL;
}
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