353 lines
12 KiB
C
353 lines
12 KiB
C
/*
|
|
* Copyright © 2011 Intel Corporation
|
|
*
|
|
* 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 (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 NONINFRINGEMENT. IN NO EVENT SHALL
|
|
* THE AUTHORS OR COPYRIGHT HOLDERS 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.
|
|
*/
|
|
#ifdef HAVE_DIX_CONFIG_H
|
|
#include <dix-config.h>
|
|
#endif
|
|
|
|
#include <GL/glxtokens.h>
|
|
#include "glxserver.h"
|
|
#include "glxext.h"
|
|
#include "indirect_dispatch.h"
|
|
|
|
#define ALL_VALID_FLAGS \
|
|
(GLX_CONTEXT_DEBUG_BIT_ARB | GLX_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB \
|
|
| GLX_CONTEXT_ROBUST_ACCESS_BIT_ARB)
|
|
|
|
static Bool
|
|
validate_GL_version(int major_version, int minor_version)
|
|
{
|
|
if (major_version <= 0 || minor_version < 0)
|
|
return False;
|
|
|
|
switch (major_version) {
|
|
case 1:
|
|
if (minor_version > 5)
|
|
return False;
|
|
break;
|
|
|
|
case 2:
|
|
if (minor_version > 1)
|
|
return False;
|
|
break;
|
|
|
|
case 3:
|
|
if (minor_version > 3)
|
|
return False;
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return True;
|
|
}
|
|
|
|
static Bool
|
|
validate_render_type(uint32_t render_type)
|
|
{
|
|
switch (render_type) {
|
|
case GLX_RGBA_TYPE:
|
|
case GLX_COLOR_INDEX_TYPE:
|
|
case GLX_RGBA_FLOAT_TYPE_ARB:
|
|
case GLX_RGBA_UNSIGNED_FLOAT_TYPE_EXT:
|
|
return True;
|
|
default:
|
|
return False;
|
|
}
|
|
}
|
|
|
|
int
|
|
__glXDisp_CreateContextAttribsARB(__GLXclientState * cl, GLbyte * pc)
|
|
{
|
|
ClientPtr client = cl->client;
|
|
xGLXCreateContextAttribsARBReq *req = (xGLXCreateContextAttribsARBReq *) pc;
|
|
int32_t *attribs = (req->numAttribs != 0) ? (int32_t *) (req + 1) : NULL;
|
|
unsigned i;
|
|
int major_version = 1;
|
|
int minor_version = 0;
|
|
uint32_t flags = 0;
|
|
uint32_t render_type = GLX_RGBA_TYPE;
|
|
__GLXcontext *ctx = NULL;
|
|
__GLXcontext *shareCtx = NULL;
|
|
__GLXscreen *glxScreen;
|
|
__GLXconfig *config;
|
|
int err;
|
|
|
|
/* The GLX_ARB_create_context_robustness spec says:
|
|
*
|
|
* "The default value for GLX_CONTEXT_RESET_NOTIFICATION_STRATEGY_ARB
|
|
* is GLX_NO_RESET_NOTIFICATION_ARB."
|
|
*/
|
|
int reset = GLX_NO_RESET_NOTIFICATION_ARB;
|
|
|
|
/* The GLX_ARB_create_context_profile spec says:
|
|
*
|
|
* "The default value for GLX_CONTEXT_PROFILE_MASK_ARB is
|
|
* GLX_CONTEXT_CORE_PROFILE_BIT_ARB."
|
|
*
|
|
* The core profile only makes sense for OpenGL versions 3.2 and later.
|
|
* If the version ultimately specified is less than 3.2, the core profile
|
|
* bit is cleared (see below).
|
|
*/
|
|
int profile = GLX_CONTEXT_CORE_PROFILE_BIT_ARB;
|
|
|
|
/* Verify that the size of the packet matches the size inferred from the
|
|
* sizes specified for the various fields.
|
|
*/
|
|
const unsigned expected_size = (sz_xGLXCreateContextAttribsARBReq
|
|
+ (req->numAttribs * 8)) / 4;
|
|
|
|
if (req->length != expected_size)
|
|
return BadLength;
|
|
|
|
LEGAL_NEW_RESOURCE(req->context, client);
|
|
|
|
/* The GLX_ARB_create_context spec says:
|
|
*
|
|
* "* If <config> is not a valid GLXFBConfig, GLXBadFBConfig is
|
|
* generated."
|
|
*
|
|
* On the client, the screen comes from the FBConfig, so GLXBadFBConfig
|
|
* should be issued if the screen is nonsense.
|
|
*/
|
|
if (!validGlxScreen(client, req->screen, &glxScreen, &err))
|
|
return __glXError(GLXBadFBConfig);
|
|
|
|
if (!validGlxFBConfig(client, glxScreen, req->fbconfig, &config, &err))
|
|
return __glXError(GLXBadFBConfig);
|
|
|
|
/* Validate the context with which the new context should share resources.
|
|
*/
|
|
if (req->shareList != None) {
|
|
if (!validGlxContext(client, req->shareList, DixReadAccess,
|
|
&shareCtx, &err))
|
|
return err;
|
|
|
|
/* The crazy condition is because C doesn't have a logical XOR
|
|
* operator. Comparing directly for equality may fail if one is 1 and
|
|
* the other is 2 even though both are logically true.
|
|
*/
|
|
if (!!req->isDirect != !!shareCtx->isDirect) {
|
|
client->errorValue = req->shareList;
|
|
return BadMatch;
|
|
}
|
|
|
|
/* The GLX_ARB_create_context spec says:
|
|
*
|
|
* "* If the server context state for <share_context>...was
|
|
* created on a different screen than the one referenced by
|
|
* <config>...BadMatch is generated."
|
|
*/
|
|
if (glxScreen != shareCtx->pGlxScreen) {
|
|
client->errorValue = shareCtx->pGlxScreen->pScreen->myNum;
|
|
return BadMatch;
|
|
}
|
|
}
|
|
|
|
for (i = 0; i < req->numAttribs; i++) {
|
|
switch (attribs[i * 2]) {
|
|
case GLX_CONTEXT_MAJOR_VERSION_ARB:
|
|
major_version = attribs[2 * i + 1];
|
|
break;
|
|
|
|
case GLX_CONTEXT_MINOR_VERSION_ARB:
|
|
minor_version = attribs[2 * i + 1];
|
|
break;
|
|
|
|
case GLX_CONTEXT_FLAGS_ARB:
|
|
flags = attribs[2 * i + 1];
|
|
break;
|
|
|
|
case GLX_RENDER_TYPE:
|
|
render_type = attribs[2 * i + 1];
|
|
break;
|
|
|
|
case GLX_CONTEXT_PROFILE_MASK_ARB:
|
|
profile = attribs[2 * i + 1];
|
|
break;
|
|
|
|
case GLX_CONTEXT_RESET_NOTIFICATION_STRATEGY_ARB:
|
|
reset = attribs[2 * i + 1];
|
|
if (reset != GLX_NO_RESET_NOTIFICATION_ARB
|
|
&& reset != GLX_LOSE_CONTEXT_ON_RESET_ARB)
|
|
return BadValue;
|
|
|
|
break;
|
|
|
|
default:
|
|
return BadValue;
|
|
}
|
|
}
|
|
|
|
/* The GLX_ARB_create_context spec says:
|
|
*
|
|
* "If attributes GLX_CONTEXT_MAJOR_VERSION_ARB and
|
|
* GLX_CONTEXT_MINOR_VERSION_ARB, when considered together
|
|
* with attributes GLX_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB and
|
|
* GLX_RENDER_TYPE, specify an OpenGL version and feature set
|
|
* that are not defined, BadMatch is generated.
|
|
*
|
|
* ...Feature deprecation was introduced with OpenGL 3.0, so
|
|
* forward-compatible contexts may only be requested for
|
|
* OpenGL 3.0 and above. Thus, examples of invalid
|
|
* combinations of attributes include:
|
|
*
|
|
* - Major version < 1 or > 3
|
|
* - Major version == 1 and minor version < 0 or > 5
|
|
* - Major version == 2 and minor version < 0 or > 1
|
|
* - Major version == 3 and minor version > 2
|
|
* - Forward-compatible flag set and major version < 3
|
|
* - Color index rendering and major version >= 3"
|
|
*/
|
|
if (!validate_GL_version(major_version, minor_version))
|
|
return BadMatch;
|
|
|
|
if (major_version < 3
|
|
&& ((flags & GLX_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB) != 0))
|
|
return BadMatch;
|
|
|
|
if (major_version >= 3 && render_type == GLX_COLOR_INDEX_TYPE)
|
|
return BadMatch;
|
|
|
|
if (!validate_render_type(render_type))
|
|
return BadValue;
|
|
|
|
if ((flags & ~ALL_VALID_FLAGS) != 0)
|
|
return BadValue;
|
|
|
|
/* The GLX_ARB_create_context_profile spec says:
|
|
*
|
|
* "* If attribute GLX_CONTEXT_PROFILE_MASK_ARB has no bits set; has
|
|
* any bits set other than GLX_CONTEXT_CORE_PROFILE_BIT_ARB and
|
|
* GLX_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB; has more than one of
|
|
* these bits set; or if the implementation does not support the
|
|
* requested profile, then GLXBadProfileARB is generated."
|
|
*/
|
|
switch (profile) {
|
|
case GLX_CONTEXT_CORE_PROFILE_BIT_ARB:
|
|
case GLX_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB:
|
|
break;
|
|
case GLX_CONTEXT_ES2_PROFILE_BIT_EXT:
|
|
/* The GLX_EXT_create_context_es2_profile spec says:
|
|
*
|
|
* "... If the version requested is 2.0, and the
|
|
* GLX_CONTEXT_ES2_PROFILE_BIT_EXT bit is set in the
|
|
* GLX_CONTEXT_PROFILE_MASK_ARB attribute (see below), then the
|
|
* context returned will implement OpenGL ES 2.0."
|
|
*
|
|
* It also says:
|
|
*
|
|
* "* If attribute GLX_CONTEXT_PROFILE_MASK_ARB has no bits set;
|
|
* has any bits set other than
|
|
* GLX_CONTEXT_CORE_PROFILE_BIT_ARB,
|
|
* GLX_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB, or
|
|
* GLX_CONTEXT_ES2_PROFILE_BIT_EXT; has more than one of these
|
|
* bits set; or if the implementation does not supported the
|
|
* requested profile, then GLXBadProfileARB is generated."
|
|
*
|
|
* It does not specifically say what is supposed to happen if
|
|
* GLX_CONTEXT_ES2_PROFILE_BIT_EXT is set but the version requested is
|
|
* not 2.0. We choose to generate GLXBadProfileARB as this matches
|
|
* NVIDIA's behavior.
|
|
*/
|
|
if (major_version != 2 || minor_version != 0)
|
|
return __glXError(GLXBadProfileARB);
|
|
break;
|
|
default:
|
|
return __glXError(GLXBadProfileARB);
|
|
}
|
|
|
|
/* The GLX_ARB_create_context_robustness spec says:
|
|
*
|
|
* "* If the reset notification behavior of <share_context> and the
|
|
* newly created context are different, BadMatch is generated."
|
|
*/
|
|
if (shareCtx != NULL && shareCtx->resetNotificationStrategy != reset)
|
|
return BadMatch;
|
|
|
|
/* There is no GLX protocol for desktop OpenGL versions after 1.4. There
|
|
* is no GLX protocol for any version of OpenGL ES. If the application is
|
|
* requested an indirect rendering context for a version that cannot be
|
|
* satisfied, reject it.
|
|
*
|
|
* The GLX_ARB_create_context spec says:
|
|
*
|
|
* "* If <config> does not support compatible OpenGL contexts
|
|
* providing the requested API major and minor version,
|
|
* forward-compatible flag, and debug context flag, GLXBadFBConfig
|
|
* is generated."
|
|
*/
|
|
if (!req->isDirect && (major_version > 1 || minor_version > 4
|
|
|| profile == GLX_CONTEXT_ES2_PROFILE_BIT_EXT)) {
|
|
return __glXError(GLXBadFBConfig);
|
|
}
|
|
|
|
/* Allocate memory for the new context
|
|
*/
|
|
if (req->isDirect) {
|
|
ctx = __glXdirectContextCreate(glxScreen, config, shareCtx);
|
|
err = BadAlloc;
|
|
}
|
|
else {
|
|
ctx = glxScreen->createContext(glxScreen, config, shareCtx,
|
|
req->numAttribs, (uint32_t *) attribs,
|
|
&err);
|
|
}
|
|
|
|
if (ctx == NULL)
|
|
return err;
|
|
|
|
ctx->pGlxScreen = glxScreen;
|
|
ctx->config = config;
|
|
ctx->id = req->context;
|
|
ctx->share_id = req->shareList;
|
|
ctx->idExists = True;
|
|
ctx->currentClient = False;
|
|
ctx->isDirect = req->isDirect;
|
|
ctx->hasUnflushedCommands = False;
|
|
ctx->renderMode = GL_RENDER;
|
|
ctx->feedbackBuf = NULL;
|
|
ctx->feedbackBufSize = 0;
|
|
ctx->selectBuf = NULL;
|
|
ctx->selectBufSize = 0;
|
|
ctx->drawPriv = NULL;
|
|
ctx->readPriv = NULL;
|
|
ctx->resetNotificationStrategy = reset;
|
|
|
|
/* Add the new context to the various global tables of GLX contexts.
|
|
*/
|
|
if (!__glXAddContext(ctx)) {
|
|
(*ctx->destroy) (ctx);
|
|
client->errorValue = req->context;
|
|
return BadAlloc;
|
|
}
|
|
|
|
return Success;
|
|
}
|
|
|
|
int
|
|
__glXDispSwap_CreateContextAttribsARB(__GLXclientState * cl, GLbyte * pc)
|
|
{
|
|
return BadRequest;
|
|
}
|