indirect.c

Mesa is an open-source implementation of the OpenGL specification - a system for rendering interacti

/* DO NOT EDIT - This file generated automatically by glX_proto_send.py (from Mesa) script */

/*
 * (C) Copyright IBM Corporation 2004, 2005
 * 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
 * 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
 * IBM,
 * 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.
 */


#include <GL/gl.h>
#include "indirect.h"
#include "glxclient.h"
#include "indirect_size.h"
#include "dispatch.h"
#include "glapi.h"
#include "glthread.h"
#include <GL/glxproto.h>
#ifdef USE_XCB
#include <X11/Xlib-xcb.h>
#include <xcb/xcb.h>
#include <xcb/glx.h>
#endif /* USE_XCB */

#define __GLX_PAD(n) (((n) + 3) & ~3)

#  if defined(__i386__) && defined(__GNUC__) && !defined(__CYGWIN__) && !defined(__MINGW32__)
#    define FASTCALL __attribute__((fastcall))
#  else
#    define FASTCALL
#  endif
#  if defined(__GNUC__)
#    define NOINLINE __attribute__((noinline))
#  else
#    define NOINLINE
#  endif

#if !defined __GNUC__ || __GNUC__ < 3
#  define __builtin_expect(x, y) x
#endif

/* If the size and opcode values are known at compile-time, this will, on
 * x86 at least, emit them with a single instruction.
 */
#define emit_header(dest, op, size)            \
    do { union { short s[2]; int i; } temp;    \
         temp.s[0] = (size); temp.s[1] = (op); \
         *((int *)(dest)) = temp.i; } while(0)

NOINLINE CARD32
__glXReadReply(Display * dpy, size_t size, void *dest,
               GLboolean reply_is_always_array)
{
    xGLXSingleReply reply;

    (void) _XReply(dpy, (xReply *) & reply, 0, False);
    if (size != 0) {
        if ((reply.length > 0) || reply_is_always_array) {
            const GLint bytes = (reply_is_always_array)
                ? (4 * reply.length) : (reply.size * size);
            const GLint extra = 4 - (bytes & 3);

            _XRead(dpy, dest, bytes);
            if (extra < 4) {
                _XEatData(dpy, extra);
            }
        } else {
            (void) memcpy(dest, &(reply.pad3), size);
        }
    }

    return reply.retval;
}

NOINLINE void
__glXReadPixelReply(Display * dpy, __GLXcontext * gc, unsigned max_dim,
                    GLint width, GLint height, GLint depth, GLenum format,
                    GLenum type, void *dest, GLboolean dimensions_in_reply)
{
    xGLXSingleReply reply;
    GLint size;

    (void) _XReply(dpy, (xReply *) & reply, 0, False);

    if (dimensions_in_reply) {
        width = reply.pad3;
        height = reply.pad4;
        depth = reply.pad5;

        if ((height == 0) || (max_dim < 2)) {
            height = 1;
        }
        if ((depth == 0) || (max_dim < 3)) {
            depth = 1;
        }
    }

    size = reply.length * 4;
    if (size != 0) {
        void *buf = Xmalloc(size);

        if (buf == NULL) {
            _XEatData(dpy, size);
            __glXSetError(gc, GL_OUT_OF_MEMORY);
        } else {
            const GLint extra = 4 - (size & 3);

            _XRead(dpy, buf, size);
            if (extra < 4) {
                _XEatData(dpy, extra);
            }

            __glEmptyImage(gc, 3, width, height, depth, format, type,
                           buf, dest);
            Xfree(buf);
        }
    }
}

#define X_GLXSingle 0

NOINLINE FASTCALL GLubyte *
__glXSetupSingleRequest(__GLXcontext * gc, GLint sop, GLint cmdlen)
{
    xGLXSingleReq *req;
    Display *const dpy = gc->currentDpy;

    (void) __glXFlushRenderBuffer(gc, gc->pc);
    LockDisplay(dpy);
    GetReqExtra(GLXSingle, cmdlen, req);
    req->reqType = gc->majorOpcode;
    req->contextTag = gc->currentContextTag;
    req->glxCode = sop;
    return (GLubyte *) (req) + sz_xGLXSingleReq;
}

NOINLINE FASTCALL GLubyte *
__glXSetupVendorRequest(__GLXcontext * gc, GLint code, GLint vop,
                        GLint cmdlen)
{
    xGLXVendorPrivateReq *req;
    Display *const dpy = gc->currentDpy;

    (void) __glXFlushRenderBuffer(gc, gc->pc);
    LockDisplay(dpy);
    GetReqExtra(GLXVendorPrivate, cmdlen, req);
    req->reqType = gc->majorOpcode;
    req->glxCode = code;
    req->vendorCode = vop;
    req->contextTag = gc->currentContextTag;
    return (GLubyte *) (req) + sz_xGLXVendorPrivateReq;
}

const GLuint __glXDefaultPixelStore[9] = { 0, 0, 0, 0, 0, 0, 0, 0, 1 };

#define zero                        (__glXDefaultPixelStore+0)
#define one                         (__glXDefaultPixelStore+8)
#define default_pixel_store_1D      (__glXDefaultPixelStore+4)
#define default_pixel_store_1D_size 20
#define default_pixel_store_2D      (__glXDefaultPixelStore+4)
#define default_pixel_store_2D_size 20
#define default_pixel_store_3D      (__glXDefaultPixelStore+0)
#define default_pixel_store_3D_size 36
#define default_pixel_store_4D      (__glXDefaultPixelStore+0)
#define default_pixel_store_4D_size 36

static FASTCALL NOINLINE void
generic_3_byte(GLint rop, const void *ptr)
{
    __GLXcontext *const gc = __glXGetCurrentContext();
    const GLuint cmdlen = 8;

    emit_header(gc->pc, rop, cmdlen);
    (void) memcpy((void *) (gc->pc + 4), ptr, 4);
    gc->pc += cmdlen;
    if (__builtin_expect(gc->pc > gc->limit, 0)) {
        (void) __glXFlushRenderBuffer(gc, gc->pc);
    }
}

static FASTCALL NOINLINE void
generic_4_byte(GLint rop, const void *ptr)
{
    __GLXcontext *const gc = __glXGetCurrentContext();
    const GLuint cmdlen = 8;

    emit_header(gc->pc, rop, cmdlen);
    (void) memcpy((void *) (gc->pc + 4), ptr, 4);
    gc->pc += cmdlen;
    if (__builtin_expect(gc->pc > gc->limit, 0)) {
        (void) __glXFlushRenderBuffer(gc, gc->pc);
    }
}

static FASTCALL NOINLINE void
generic_6_byte(GLint rop, const void *ptr)
{
    __GLXcontext *const gc = __glXGetCurrentContext();
    const GLuint cmdlen = 12;

    emit_header(gc->pc, rop, cmdlen);
    (void) memcpy((void *) (gc->pc + 4), ptr, 8);
    gc->pc += cmdlen;
    if (__builtin_expect(gc->pc > gc->limit, 0)) {
        (void) __glXFlushRenderBuffer(gc, gc->pc);
    }
}

static FASTCALL NOINLINE void
generic_8_byte(GLint rop, const void *ptr)
{
    __GLXcontext *const gc = __glXGetCurrentContext();
    const GLuint cmdlen = 12;

    emit_header(gc->pc, rop, cmdlen);
    (void) memcpy((void *) (gc->pc + 4), ptr, 8);
    gc->pc += cmdlen;
    if (__builtin_expect(gc->pc > gc->limit, 0)) {
        (void) __glXFlushRenderBuffer(gc, gc->pc);
    }
}

static FASTCALL NOINLINE void
generic_12_byte(GLint rop, const void *ptr)
{
    __GLXcontext *const gc = __glXGetCurrentContext();
    const GLuint cmdlen = 16;

    emit_header(gc->pc, rop, cmdlen);
    (void) memcpy((void *) (gc->pc + 4), ptr, 12);
    gc->pc += cmdlen;
    if (__builtin_expect(gc->pc > gc->limit, 0)) {
        (void) __glXFlushRenderBuffer(gc, gc->pc);
    }
}

static FASTCALL NOINLINE void
generic_16_byte(GLint rop, const void *ptr)
{
    __GLXcontext *const gc = __glXGetCurrentContext();
    const GLuint cmdlen = 20;

    emit_header(gc->pc, rop, cmdlen);
    (void) memcpy((void *) (gc->pc + 4), ptr, 16);
    gc->pc += cmdlen;
    if (__builtin_expect(gc->pc > gc->limit, 0)) {
        (void) __glXFlushRenderBuffer(gc, gc->pc);
    }
}

static FASTCALL NOINLINE void
generic_24_byte(GLint rop, const void *ptr)
{
    __GLXcontext *const gc = __glXGetCurrentContext();
    const GLuint cmdlen = 28;

    emit_header(gc->pc, rop, cmdlen);
    (void) memcpy((void *) (gc->pc + 4), ptr, 24);
    gc->pc += cmdlen;
    if (__builtin_expect(gc->pc > gc->limit, 0)) {
        (void) __glXFlushRenderBuffer(gc, gc->pc);
    }
}

static FASTCALL NOINLINE void
generic_32_byte(GLint rop, const void *ptr)
{
    __GLXcontext *const gc = __glXGetCurrentContext();
    const GLuint cmdlen = 36;

    emit_header(gc->pc, rop, cmdlen);
    (void) memcpy((void *) (gc->pc + 4), ptr, 32);
    gc->pc += cmdlen;
    if (__builtin_expect(gc->pc > gc->limit, 0)) {
        (void) __glXFlushRenderBuffer(gc, gc->pc);
    }
}

#define X_GLsop_NewList 101
void
__indirect_glNewList(GLuint list, GLenum mode)
{
    __GLXcontext *const gc = __glXGetCurrentContext();
    Display *const dpy = gc->currentDpy;
#ifndef USE_XCB
    const GLuint cmdlen = 8;
#endif
    if (__builtin_expect(dpy != NULL, 1)) {
#ifdef USE_XCB
        xcb_connection_t *c = XGetXCBConnection(dpy);
        (void) __glXFlushRenderBuffer(gc, gc->pc);
        xcb_glx_new_list(c, gc->currentContextTag, list, mode);
#else
        GLubyte const *pc =
            __glXSetupSingleRequest(gc, X_GLsop_NewList, cmdlen);
        (void) memcpy((void *) (pc + 0), (void *) (&list), 4);
        (void) memcpy((void *) (pc + 4), (void *) (&mode), 4);
        UnlockDisplay(dpy);
        SyncHandle();
#endif /* USE_XCB */
    }
    return;
}

#define X_GLsop_EndList 102
void
__indirect_glEndList(void)
{
    __GLXcontext *const gc = __glXGetCurrentContext();
    Display *const dpy = gc->currentDpy;
#ifndef USE_XCB
    const GLuint cmdlen = 0;
#endif
    if (__builtin_expect(dpy != NULL, 1)) {
#ifdef USE_XCB
        xcb_connection_t *c = XGetXCBConnection(dpy);
        (void) __glXFlushRenderBuffer(gc, gc->pc);
        xcb_glx_end_list(c, gc->currentContextTag);
#else
        (void) __glXSetupSingleRequest(gc, X_GLsop_EndList, cmdlen);
        UnlockDisplay(dpy);
        SyncHandle();
#endif /* USE_XCB */
    }
    return;
}

#define X_GLrop_CallList 1
void
__indirect_glCallList(GLuint list)
{
    __GLXcontext *const gc = __glXGetCurrentContext();
    const GLuint cmdlen = 8;
    emit_header(gc->pc, X_GLrop_CallList, cmdlen);
    (void) memcpy((void *) (gc->pc + 4), (void *) (&list), 4);
    gc->pc += cmdlen;
    if (__builtin_expect(gc->pc > gc->limit, 0)) {
        (void) __glXFlushRenderBuffer(gc, gc->pc);
    }
}

#define X_GLrop_CallLists 2
void
__indirect_glCallLists(GLsizei n, GLenum type, const GLvoid * lists)
{
    __GLXcontext *const gc = __glXGetCurrentContext();
    const GLuint compsize = __glCallLists_size(type);
    const GLuint cmdlen = 12 + __GLX_PAD((compsize * n));
    if (n < 0) {
        __glXSetError(gc, GL_INVALID_VALUE);
        return;
    }
    if (__builtin_expect((n >= 0) && (gc->currentDpy != NULL), 1)) {
        if (cmdlen <= gc->maxSmallRenderCommandSize) {
            if ((gc->pc + cmdlen) > gc->bufEnd) {
                (void) __glXFlushRenderBuffer(gc, gc->pc);
            }
            emit_header(gc->pc, X_GLrop_CallLists, cmdlen);
            (void) memcpy((void *) (gc->pc + 4), (void *) (&n), 4);
            (void) memcpy((void *) (gc->pc + 8), (void *) (&type), 4);
            (void) memcpy((void *) (gc->pc + 12), (void *) (lists),
                          (compsize * n));
            gc->pc += cmdlen;
            if (__builtin_expect(gc->pc > gc->limit, 0)) {
                (void) __glXFlushRenderBuffer(gc, gc->pc);
            }
        } else {
            const GLint op = X_GLrop_CallLists;
            const GLuint cmdlenLarge = cmdlen + 4;
            GLubyte *const pc = __glXFlushRenderBuffer(gc, gc->pc);
            (void) memcpy((void *) (pc + 0), (void *) (&cmdlenLarge), 4);
            (void) memcpy((void *) (pc + 4), (void *) (&op), 4);
            (void) memcpy((void *) (pc + 8), (void *) (&n), 4);
            (void) memcpy((void *) (pc + 12), (void *) (&type), 4);
            __glXSendLargeCommand(gc, pc, 16, lists, (compsize * n));
        }
    }
}

#define X_GLsop_DeleteLists 103
void
__indirect_glDeleteLists(GLuint list, GLsizei range)
{
    __GLXcontext *const gc = __glXGetCurrentContext();
    Display *const dpy = gc->currentDpy;
#ifndef USE_XCB
    const GLuint cmdlen = 8;
#endif
    if (__builtin_expect(dpy != NULL, 1)) {
#ifdef USE_XCB
        xcb_connection_t *c = XGetXCBConnection(dpy);
        (void) __glXFlushRenderBuffer(gc, gc->pc);
        xcb_glx_delete_lists(c, gc->currentContextTag, list, range);
#else
        GLubyte const *pc =
            __glXSetupSingleRequest(gc, X_GLsop_DeleteLists, cmdlen);
        (void) memcpy((void *) (pc + 0), (void *) (&list), 4);
        (void) memcpy((void *) (pc + 4), (void *) (&range), 4);
        UnlockDisplay(dpy);
        SyncHandle();
#endif /* USE_XCB */
    }
    return;
}

#define X_GLsop_GenLists 104
GLuint
__indirect_glGenLists(GLsizei range)
{
    __GLXcontext *const gc = __glXGetCurrentContext();
    Display *const dpy = gc->currentDpy;
    GLuint retval = (GLuint) 0;
#ifndef USE_XCB
    const GLuint cmdlen = 4;
#endif
    if (__builtin_expect(dpy != NULL, 1)) {