int __glXDispSwap_SelectBuffer(__GLXclientState *cl, GLbyte *pc)
{
__GLXcontext *cx;
GLsizei size;
__GLX_DECLARE_SWAP_VARIABLES;
int error;
__GLX_SWAP_INT(&((xGLXSingleReq *)pc)->contextTag);
cx = __glXForceCurrent(cl, __GLX_GET_SINGLE_CONTEXT_TAG(pc), &error);
if (!cx) {
return error;
}
pc += __GLX_SINGLE_HDR_SIZE;
__GLX_SWAP_INT(pc+0);
size = *(GLsizei *)(pc+0);
if (cx->selectBufSize < size) {
cx->selectBuf = (GLuint *) xrealloc(cx->selectBuf,
(size_t) size
* __GLX_SIZE_CARD32);
if (!cx->selectBuf) {
cl->client->errorValue = size;
return BadAlloc;
}
cx->selectBufSize = size;
}
CALL_SelectBuffer( GET_DISPATCH(), (size, cx->selectBuf) );
__GLX_NOTE_UNFLUSHED_CMDS(cx);
return Success;
}
int __glXDisp_SelectBuffer(__GLXclientState *cl, GLbyte *pc)
{
__GLXcontext *cx;
GLsizei size;
int error;
cx = __glXForceCurrent(cl, __GLX_GET_SINGLE_CONTEXT_TAG(pc), &error);
if (!cx) {
return error;
}
pc += __GLX_SINGLE_HDR_SIZE;
size = *(GLsizei *)(pc+0);
if (cx->selectBufSize < size) {
cx->selectBuf = (GLuint *) __glXRealloc(cx->selectBuf,
(size_t) size
* __GLX_SIZE_CARD32);
if (!cx->selectBuf) {
cl->client->errorValue = size;
return BadAlloc;
}
cx->selectBufSize = size;
}
glSelectBuffer(size, cx->selectBuf);
__GLX_NOTE_UNFLUSHED_CMDS(cx);
return Success;
}
int __glXDisp_FeedbackBuffer(__GLXclientState *cl, GLbyte *pc)
{
GLsizei size;
GLenum type;
__GLXcontext *cx;
int error;
cx = __glXForceCurrent(cl, __GLX_GET_SINGLE_CONTEXT_TAG(pc), &error);
if (!cx) {
return error;
}
pc += __GLX_SINGLE_HDR_SIZE;
size = *(GLsizei *)(pc+0);
type = *(GLenum *)(pc+4);
if (cx->feedbackBufSize < size) {
cx->feedbackBuf = (GLfloat *) __glXRealloc(cx->feedbackBuf,
(size_t)size
* __GLX_SIZE_FLOAT32);
if (!cx->feedbackBuf) {
cl->client->errorValue = size;
return BadAlloc;
}
cx->feedbackBufSize = size;
}
glFeedbackBuffer(size, type, cx->feedbackBuf);
__GLX_NOTE_UNFLUSHED_CMDS(cx);
return Success;
}
int __glXDispSwap_FeedbackBuffer(__GLXclientState *cl, GLbyte *pc)
{
ClientPtr client = cl->client;
GLsizei size;
GLenum type;
__GLX_DECLARE_SWAP_VARIABLES;
__GLXcontext *cx;
int error;
REQUEST_FIXED_SIZE(xGLXSingleReq, 8);
__GLX_SWAP_INT(&((xGLXSingleReq *)pc)->contextTag);
cx = __glXForceCurrent(cl, __GLX_GET_SINGLE_CONTEXT_TAG(pc), &error);
if (!cx) {
return error;
}
pc += __GLX_SINGLE_HDR_SIZE;
__GLX_SWAP_INT(pc+0);
__GLX_SWAP_INT(pc+4);
size = *(GLsizei *)(pc+0);
type = *(GLenum *)(pc+4);
if (cx->feedbackBufSize < size) {
cx->feedbackBuf = (GLfloat *) __glXRealloc(cx->feedbackBuf,
(size_t) size
* __GLX_SIZE_FLOAT32);
if (!cx->feedbackBuf) {
cl->client->errorValue = size;
return BadAlloc;
}
cx->feedbackBufSize = size;
}
glFeedbackBuffer(size, type, cx->feedbackBuf);
__GLX_NOTE_UNFLUSHED_CMDS(cx);
return Success;
}
int __glXDisp_DeleteLists(__GLXclientState *cl, GLbyte *pc)
{
__GLXcontext *cx;
int error;
cx = __glXForceCurrent(cl, __GLX_GET_SINGLE_CONTEXT_TAG(pc), &error);
if (!cx) {
return error;
}
pc += __GLX_SINGLE_HDR_SIZE;
glDeleteLists(
*(GLuint *)(pc + 0),
*(GLsizei *)(pc + 4)
);
__GLX_NOTE_UNFLUSHED_CMDS(cx);
return Success;
}
int __glXDisp_PixelStorei(__GLXclientState *cl, GLbyte *pc)
{
__GLXcontext *cx;
int error;
cx = __glXForceCurrent(cl, __GLX_GET_SINGLE_CONTEXT_TAG(pc), &error);
if (!cx) {
return error;
}
pc += __GLX_SINGLE_HDR_SIZE;
glPixelStorei(
*(GLenum *)(pc + 0),
*(GLint *)(pc + 4)
);
__GLX_NOTE_UNFLUSHED_CMDS(cx);
return Success;
}
/*
** Execute a large rendering request (one that spans multiple X requests).
*/
int __glXSwapRenderLarge(__GLXclientState *cl, GLbyte *pc)
{
xGLXRenderLargeReq *req;
ClientPtr client= cl->client;
size_t dataBytes;
void (*proc)(GLbyte *);
__GLXrenderLargeHeader *hdr;
__GLXcontext *cx;
int error;
CARD16 opcode;
__GLX_DECLARE_SWAP_VARIABLES;
/*
** NOTE: much of this code also appears in the nonswapping version of this
** routine, __glXRenderLarge(). Any changes made here should also be
** duplicated there.
*/
req = (xGLXRenderLargeReq *) pc;
__GLX_SWAP_SHORT(&req->length);
__GLX_SWAP_INT(&req->contextTag);
__GLX_SWAP_INT(&req->dataBytes);
__GLX_SWAP_SHORT(&req->requestNumber);
__GLX_SWAP_SHORT(&req->requestTotal);
cx = __glXForceCurrent(cl, req->contextTag, &error);
if (!cx) {
/* Reset in case this isn't 1st request. */
__glXResetLargeCommandStatus(cl);
return error;
}
dataBytes = req->dataBytes;
/*
** Check the request length.
*/
if ((req->length << 2) != __GLX_PAD(dataBytes) + sz_xGLXRenderLargeReq) {
client->errorValue = req->length;
/* Reset in case this isn't 1st request. */
__glXResetLargeCommandStatus(cl);
return BadLength;
}
pc += sz_xGLXRenderLargeReq;
if (cl->largeCmdRequestsSoFar == 0) {
__GLXrenderSizeData *entry;
int extra;
size_t cmdlen;
/*
** This is the first request of a multi request command.
** Make enough space in the buffer, then copy the entire request.
*/
if (req->requestNumber != 1) {
client->errorValue = req->requestNumber;
return __glXBadLargeRequest;
}
hdr = (__GLXrenderLargeHeader *) pc;
__GLX_SWAP_INT(&hdr->length);
__GLX_SWAP_INT(&hdr->opcode);
cmdlen = hdr->length;
opcode = hdr->opcode;
if ( (opcode >= __GLX_MIN_RENDER_OPCODE) &&
(opcode <= __GLX_MAX_RENDER_OPCODE) ) {
entry = &__glXRenderSizeTable[opcode];
proc = __glXSwapRenderTable[opcode];
#if __GLX_MAX_RENDER_OPCODE_EXT > __GLX_MIN_RENDER_OPCODE_EXT
} else if ( (opcode >= __GLX_MIN_RENDER_OPCODE_EXT) &&
(opcode <= __GLX_MAX_RENDER_OPCODE_EXT) ) {
int index = opcode - __GLX_MIN_RENDER_OPCODE_EXT;
entry = &__glXRenderSizeTable_EXT[index];
proc = __glXSwapRenderTable_EXT[index];
#endif /* __GLX_MAX_RENDER_OPCODE_EXT > __GLX_MIN_RENDER_OPCODE_EXT */
} else {
client->errorValue = opcode;
return __glXBadLargeRequest;
}
if (!entry->bytes) {
/* unused opcode */
client->errorValue = opcode;
return __glXBadLargeRequest;
}
if (entry->varsize) {
/*
** If it's a variable-size command (a command whose length must
** be computed from its parameters), all the parameters needed
** will be in the 1st request, so it's okay to do this.
*/
extra = (*entry->varsize)(pc + __GLX_RENDER_LARGE_HDR_SIZE, True);
if (extra < 0) {
extra = 0;
}
/* large command's header is 4 bytes longer, so add 4 */
if (cmdlen != __GLX_PAD(entry->bytes + 4 + extra)) {
return BadLength;
}
} else {
/* constant size command */
if (cmdlen != __GLX_PAD(entry->bytes + 4)) {
return BadLength;
}
}
/*
** Make enough space in the buffer, then copy the entire request.
*/
if (cl->largeCmdBufSize < cmdlen) {
if (!cl->largeCmdBuf) {
cl->largeCmdBuf = (GLbyte *) xalloc(cmdlen);
} else {
cl->largeCmdBuf = (GLbyte *) xrealloc(cl->largeCmdBuf, cmdlen);
}
if (!cl->largeCmdBuf) {
return BadAlloc;
}
cl->largeCmdBufSize = cmdlen;
}
memcpy(cl->largeCmdBuf, pc, dataBytes);
cl->largeCmdBytesSoFar = dataBytes;
cl->largeCmdBytesTotal = cmdlen;
cl->largeCmdRequestsSoFar = 1;
cl->largeCmdRequestsTotal = req->requestTotal;
return Success;
} else {
/*
** We are receiving subsequent (i.e. not the first) requests of a
** multi request command.
*/
/*
** Check the request number and the total request count.
*/
if (req->requestNumber != cl->largeCmdRequestsSoFar + 1) {
client->errorValue = req->requestNumber;
__glXResetLargeCommandStatus(cl);
return __glXBadLargeRequest;
}
if (req->requestTotal != cl->largeCmdRequestsTotal) {
client->errorValue = req->requestTotal;
__glXResetLargeCommandStatus(cl);
return __glXBadLargeRequest;
}
/*
** Check that we didn't get too much data.
*/
if ((cl->largeCmdBytesSoFar + dataBytes) > cl->largeCmdBytesTotal) {
client->errorValue = dataBytes;
__glXResetLargeCommandStatus(cl);
return __glXBadLargeRequest;
}
memcpy(cl->largeCmdBuf + cl->largeCmdBytesSoFar, pc, dataBytes);
cl->largeCmdBytesSoFar += dataBytes;
cl->largeCmdRequestsSoFar++;
if (req->requestNumber == cl->largeCmdRequestsTotal) {
/*
** This is the last request; it must have enough bytes to complete
** the command.
*/
/* NOTE: the two pad macros have been added below; they are needed
** because the client library pads the total byte count, but not
** the per-request byte counts. The Protocol Encoding says the
** total byte count should not be padded, so a proposal will be
** made to the ARB to relax the padding constraint on the total
** byte count, thus preserving backward compatibility. Meanwhile,
** the padding done below fixes a bug that did not allow
** large commands of odd sizes to be accepted by the server.
*/
if (__GLX_PAD(cl->largeCmdBytesSoFar) !=
__GLX_PAD(cl->largeCmdBytesTotal)) {
client->errorValue = dataBytes;
__glXResetLargeCommandStatus(cl);
return __glXBadLargeRequest;
}
hdr = (__GLXrenderLargeHeader *) cl->largeCmdBuf;
/*
** The opcode and length field in the header had already been
** swapped when the first request was received.
*/
/*
** Use the opcode to index into the procedure table.
*/
opcode = hdr->opcode;
if ( (opcode >= __GLX_MIN_RENDER_OPCODE) &&
(opcode <= __GLX_MAX_RENDER_OPCODE) ) {
proc = __glXSwapRenderTable[opcode];
#if __GLX_MAX_RENDER_OPCODE_EXT > __GLX_MIN_RENDER_OPCODE_EXT
} else if ( (opcode >= __GLX_MIN_RENDER_OPCODE_EXT) &&
(opcode <= __GLX_MAX_RENDER_OPCODE_EXT) ) {
int index = opcode - __GLX_MIN_RENDER_OPCODE_EXT;
proc = __glXSwapRenderTable_EXT[index];
#endif /* __GLX_MAX_RENDER_OPCODE_EXT > __GLX_MIN_RENDER_OPCODE_EXT */
} else {
client->errorValue = opcode;
return __glXBadLargeRequest;
}
/*
** Skip over the header and execute the command.
*/
(*proc)(cl->largeCmdBuf + __GLX_RENDER_LARGE_HDR_SIZE);
__GLX_NOTE_UNFLUSHED_CMDS(cx);
/*
** Reset for the next RenderLarge series.
*/
__glXResetLargeCommandStatus(cl);
} else {
/*
** This is neither the first nor the last request.
*/
}
return Success;
}
}
int __glXSwapRender(__GLXclientState *cl, GLbyte *pc)
{
xGLXRenderReq *req;
ClientPtr client= cl->client;
int left, cmdlen, error;
int commandsDone;
CARD16 opcode;
__GLXrenderHeader *hdr;
__GLXcontext *cx;
__GLX_DECLARE_SWAP_VARIABLES;
/*
** NOTE: much of this code also appears in the nonswapping version of this
** routine, __glXRender(). Any changes made here should also be
** duplicated there.
*/
req = (xGLXRenderReq *) pc;
__GLX_SWAP_SHORT(&req->length);
__GLX_SWAP_INT(&req->contextTag);
cx = __glXForceCurrent(cl, req->contextTag, &error);
if (!cx) {
return error;
}
commandsDone = 0;
pc += sz_xGLXRenderReq;
left = (req->length << 2) - sz_xGLXRenderReq;
while (left > 0) {
__GLXrenderSizeData *entry;
int extra;
void (* proc)(GLbyte *);
/*
** Verify that the header length and the overall length agree.
** Also, each command must be word aligned.
*/
hdr = (__GLXrenderHeader *) pc;
__GLX_SWAP_SHORT(&hdr->length);
__GLX_SWAP_SHORT(&hdr->opcode);
cmdlen = hdr->length;
opcode = hdr->opcode;
if ( (opcode >= __GLX_MIN_RENDER_OPCODE) &&
(opcode <= __GLX_MAX_RENDER_OPCODE) ) {
entry = &__glXRenderSizeTable[opcode];
proc = __glXSwapRenderTable[opcode];
#if __GLX_MAX_RENDER_OPCODE_EXT > __GLX_MIN_RENDER_OPCODE_EXT
} else if ( (opcode >= __GLX_MIN_RENDER_OPCODE_EXT) &&
(opcode <= __GLX_MAX_RENDER_OPCODE_EXT) ) {
int index = opcode - __GLX_MIN_RENDER_OPCODE_EXT;
entry = &__glXRenderSizeTable_EXT[index];
proc = __glXSwapRenderTable_EXT[index];
#endif /* __GLX_MAX_RENDER_OPCODE_EXT > __GLX_MIN_RENDER_OPCODE_EXT */
} else {
client->errorValue = commandsDone;
return __glXBadRenderRequest;
}
if (!entry->bytes) {
/* unused opcode */
client->errorValue = commandsDone;
return __glXBadRenderRequest;
}
if (entry->varsize) {
/* variable size command */
extra = (*entry->varsize)(pc + __GLX_RENDER_HDR_SIZE, True);
if (extra < 0) {
extra = 0;
}
if (cmdlen != __GLX_PAD(entry->bytes + extra)) {
return BadLength;
}
} else {
/* constant size command */
if (cmdlen != __GLX_PAD(entry->bytes)) {
return BadLength;
}
}
if (left < cmdlen) {
return BadLength;
}
/*
** Skip over the header and execute the command. We allow the
** caller to trash the command memory. This is useful especially
** for things that require double alignment - they can just shift
** the data towards lower memory (trashing the header) by 4 bytes
** and achieve the required alignment.
*/
(*proc)(pc + __GLX_RENDER_HDR_SIZE);
pc += cmdlen;
left -= cmdlen;
commandsDone++;
}
__GLX_NOTE_UNFLUSHED_CMDS(cx);
return Success;
}
