/*
 * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
 * Copyright (C) 1991-2000 Silicon Graphics, Inc. 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, 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 including the dates of first publication and
 * either this permission notice or a reference to
 * http://oss.sgi.com/projects/FreeB/
 * 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
 * SILICON GRAPHICS, INC. 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.
 *
 * Except as contained in this notice, the name of Silicon Graphics, Inc.
 * shall not be used in advertising or otherwise to promote the sale, use or
 * other dealings in this Software without prior written authorization from
 * Silicon Graphics, Inc.
 */

#ifdef HAVE_DIX_CONFIG_H
#include <dix-config.h>
#endif

#include "glxserver.h"
#include "glxext.h"
#include "singlesize.h"
#include "unpack.h"
#include "indirect_dispatch.h"
#include "indirect_size_get.h"
#include "glapitable.h"
#include "glapi.h"
#include "glthread.h"
#include "dispatch.h"

int
__glXDispSwap_ReadPixels(__GLXclientState * cl, GLbyte * pc)
{
    GLsizei width, height;
    GLenum format, type;
    GLboolean swapBytes, lsbFirst;
    GLint compsize;

    __GLX_DECLARE_SWAP_VARIABLES;
    __GLXcontext *cx;
    ClientPtr client = cl->client;
    int error;
    char *answer, answerBuffer[200];

    __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);
    __GLX_SWAP_INT(pc + 8);
    __GLX_SWAP_INT(pc + 12);
    __GLX_SWAP_INT(pc + 16);
    __GLX_SWAP_INT(pc + 20);

    width = *(GLsizei *) (pc + 8);
    height = *(GLsizei *) (pc + 12);
    format = *(GLenum *) (pc + 16);
    type = *(GLenum *) (pc + 20);
    swapBytes = *(GLboolean *) (pc + 24);
    lsbFirst = *(GLboolean *) (pc + 25);
    compsize = __glReadPixels_size(format, type, width, height);
    if (compsize < 0)
        compsize = 0;

    CALL_PixelStorei(GET_DISPATCH(), (GL_PACK_SWAP_BYTES, !swapBytes));
    CALL_PixelStorei(GET_DISPATCH(), (GL_PACK_LSB_FIRST, lsbFirst));
    __GLX_GET_ANSWER_BUFFER(answer, cl, compsize, 1);
    __glXClearErrorOccured();
    CALL_ReadPixels(GET_DISPATCH(),
                    (*(GLint *) (pc + 0),
                     *(GLint *) (pc + 4),
                     *(GLsizei *) (pc + 8),
                     *(GLsizei *) (pc + 12),
                     *(GLenum *) (pc + 16), *(GLenum *) (pc + 20), answer)
        );

    if (__glXErrorOccured()) {
        __GLX_BEGIN_REPLY(0);
        __GLX_SWAP_REPLY_HEADER();
        __GLX_SEND_HEADER();
    }
    else {
        __GLX_BEGIN_REPLY(compsize);
        __GLX_SWAP_REPLY_HEADER();
        __GLX_SEND_HEADER();
        __GLX_SEND_VOID_ARRAY(compsize);
    }
    cx->hasUnflushedCommands = GL_FALSE;
    return Success;
}

int
__glXDispSwap_GetTexImage(__GLXclientState * cl, GLbyte * pc)
{
    GLint level, compsize;
    GLenum format, type, target;
    GLboolean swapBytes;

    __GLX_DECLARE_SWAP_VARIABLES;
    __GLXcontext *cx;
    ClientPtr client = cl->client;
    int error;
    char *answer, answerBuffer[200];
    GLint width = 0, height = 0, depth = 1;

    __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);
    __GLX_SWAP_INT(pc + 8);
    __GLX_SWAP_INT(pc + 12);

    level = *(GLint *) (pc + 4);
    format = *(GLenum *) (pc + 8);
    type = *(GLenum *) (pc + 12);
    target = *(GLenum *) (pc + 0);
    swapBytes = *(GLboolean *) (pc + 16);

    CALL_GetTexLevelParameteriv(GET_DISPATCH(),
                                (target, level, GL_TEXTURE_WIDTH, &width));
    CALL_GetTexLevelParameteriv(GET_DISPATCH(),
                                (target, level, GL_TEXTURE_HEIGHT, &height));
    if (target == GL_TEXTURE_3D) {
        CALL_GetTexLevelParameteriv(GET_DISPATCH(),
                                    (target, level, GL_TEXTURE_DEPTH, &depth));
    }
    /*
     * The three queries above might fail if we're in a state where queries
     * are illegal, but then width, height, and depth would still be zero anyway.
     */
    compsize =
        __glGetTexImage_size(target, level, format, type, width, height, depth);
    if (compsize < 0)
        compsize = 0;

    CALL_PixelStorei(GET_DISPATCH(), (GL_PACK_SWAP_BYTES, !swapBytes));
    __GLX_GET_ANSWER_BUFFER(answer, cl, compsize, 1);
    __glXClearErrorOccured();
    CALL_GetTexImage(GET_DISPATCH(), (*(GLenum *) (pc + 0),
                                      *(GLint *) (pc + 4),
                                      *(GLenum *) (pc + 8),
                                      *(GLenum *) (pc + 12), answer));

    if (__glXErrorOccured()) {
        __GLX_BEGIN_REPLY(0);
        __GLX_SWAP_REPLY_HEADER();
        __GLX_SEND_HEADER();
    }
    else {
        __GLX_BEGIN_REPLY(compsize);
        __GLX_SWAP_REPLY_HEADER();
        __GLX_SWAP_INT(&width);
        __GLX_SWAP_INT(&height);
        __GLX_SWAP_INT(&depth);
        ((xGLXGetTexImageReply *) &__glXReply)->width = width;
        ((xGLXGetTexImageReply *) &__glXReply)->height = height;
        ((xGLXGetTexImageReply *) &__glXReply)->depth = depth;
        __GLX_SEND_HEADER();
        __GLX_SEND_VOID_ARRAY(compsize);
    }
    return Success;
}

int
__glXDispSwap_GetPolygonStipple(__GLXclientState * cl, GLbyte * pc)
{
    GLboolean lsbFirst;
    __GLXcontext *cx;
    ClientPtr client = cl->client;
    int error;
    GLubyte answerBuffer[200];
    char *answer;

    __GLX_DECLARE_SWAP_VARIABLES;

    __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;
    lsbFirst = *(GLboolean *) (pc + 0);

    CALL_PixelStorei(GET_DISPATCH(), (GL_PACK_LSB_FIRST, lsbFirst));
    __GLX_GET_ANSWER_BUFFER(answer, cl, 128, 1);

    __glXClearErrorOccured();
    CALL_GetPolygonStipple(GET_DISPATCH(), ((GLubyte *) answer));
    if (__glXErrorOccured()) {
        __GLX_BEGIN_REPLY(0);
        __GLX_SWAP_REPLY_HEADER();
        __GLX_SEND_HEADER();
    }
    else {
        __GLX_BEGIN_REPLY(128);
        __GLX_SWAP_REPLY_HEADER();
        __GLX_SEND_HEADER();
        __GLX_SEND_BYTE_ARRAY(128);
    }
    return Success;
}

static int
GetSeparableFilter(__GLXclientState * cl, GLbyte * pc, GLXContextTag tag)
{
    GLint compsize, compsize2;
    GLenum format, type, target;
    GLboolean swapBytes;
    __GLXcontext *cx;
    ClientPtr client = cl->client;
    int error;

    __GLX_DECLARE_SWAP_VARIABLES;
    char *answer, answerBuffer[200];
    GLint width = 0, height = 0;

    cx = __glXForceCurrent(cl, tag, &error);
    if (!cx) {
        return error;
    }

    __GLX_SWAP_INT(pc + 0);
    __GLX_SWAP_INT(pc + 4);
    __GLX_SWAP_INT(pc + 8);

    format = *(GLenum *) (pc + 4);
    type = *(GLenum *) (pc + 8);
    target = *(GLenum *) (pc + 0);
    swapBytes = *(GLboolean *) (pc + 12);

    /* target must be SEPARABLE_2D, however I guess we can let the GL
       barf on this one.... */

    CALL_GetConvolutionParameteriv(GET_DISPATCH(),
                                   (target, GL_CONVOLUTION_WIDTH, &width));
    CALL_GetConvolutionParameteriv(GET_DISPATCH(),
                                   (target, GL_CONVOLUTION_HEIGHT, &height));
    /*
     * The two queries above might fail if we're in a state where queries
     * are illegal, but then width and height would still be zero anyway.
     */
    compsize = __glGetTexImage_size(target, 1, format, type, width, 1, 1);
    compsize2 = __glGetTexImage_size(target, 1, format, type, height, 1, 1);

    if (compsize < 0)
        compsize = 0;
    if (compsize2 < 0)
        compsize2 = 0;
    compsize = __GLX_PAD(compsize);
    compsize2 = __GLX_PAD(compsize2);

    CALL_PixelStorei(GET_DISPATCH(), (GL_PACK_SWAP_BYTES, !swapBytes));
    __GLX_GET_ANSWER_BUFFER(answer, cl, compsize + compsize2, 1);
    __glXClearErrorOccured();
    CALL_GetSeparableFilter(GET_DISPATCH(), (*(GLenum *) (pc + 0),
                                             *(GLenum *) (pc + 4),
                                             *(GLenum *) (pc + 8),
                                             answer, answer + compsize, NULL));

    if (__glXErrorOccured()) {
        __GLX_BEGIN_REPLY(0);
        __GLX_SWAP_REPLY_HEADER();
    }
    else {
        __GLX_BEGIN_REPLY(compsize + compsize2);
        __GLX_SWAP_REPLY_HEADER();
        __GLX_SWAP_INT(&width);
        __GLX_SWAP_INT(&height);
        ((xGLXGetSeparableFilterReply *) &__glXReply)->width = width;
        ((xGLXGetSeparableFilterReply *) &__glXReply)->height = height;
        __GLX_SEND_VOID_ARRAY(compsize + compsize2);
    }

    return Success;
}

int
__glXDispSwap_GetSeparableFilter(__GLXclientState * cl, GLbyte * pc)
{
    const GLXContextTag tag = __GLX_GET_SINGLE_CONTEXT_TAG(pc);

    return GetSeparableFilter(cl, pc + __GLX_SINGLE_HDR_SIZE, tag);
}

int
__glXDispSwap_GetSeparableFilterEXT(__GLXclientState * cl, GLbyte * pc)
{
    const GLXContextTag tag = __GLX_GET_VENDPRIV_CONTEXT_TAG(pc);

    return GetSeparableFilter(cl, pc + __GLX_VENDPRIV_HDR_SIZE, tag);
}

static int
GetConvolutionFilter(__GLXclientState * cl, GLbyte * pc, GLXContextTag tag)
{
    GLint compsize;
    GLenum format, type, target;
    GLboolean swapBytes;
    __GLXcontext *cx;
    ClientPtr client = cl->client;
    int error;

    __GLX_DECLARE_SWAP_VARIABLES;
    char *answer, answerBuffer[200];
    GLint width = 0, height = 0;

    cx = __glXForceCurrent(cl, tag, &error);
    if (!cx) {
        return error;
    }

    __GLX_SWAP_INT(pc + 0);
    __GLX_SWAP_INT(pc + 4);
    __GLX_SWAP_INT(pc + 8);

    format = *(GLenum *) (pc + 4);
    type = *(GLenum *) (pc + 8);
    target = *(GLenum *) (pc + 0);
    swapBytes = *(GLboolean *) (pc + 12);

    CALL_GetConvolutionParameteriv(GET_DISPATCH(),
                                   (target, GL_CONVOLUTION_WIDTH, &width));
    if (target == GL_CONVOLUTION_2D) {
        height = 1;
    }
    else {
        CALL_GetConvolutionParameteriv(GET_DISPATCH(),
                                       (target, GL_CONVOLUTION_HEIGHT,
                                        &height));
    }
    /*
     * The two queries above might fail if we're in a state where queries
     * are illegal, but then width and height would still be zero anyway.
     */
    compsize = __glGetTexImage_size(target, 1, format, type, width, height, 1);
    if (compsize < 0)
        compsize = 0;

    CALL_PixelStorei(GET_DISPATCH(), (GL_PACK_SWAP_BYTES, !swapBytes));
    __GLX_GET_ANSWER_BUFFER(answer, cl, compsize, 1);
    __glXClearErrorOccured();
    CALL_GetConvolutionFilter(GET_DISPATCH(), (*(GLenum *) (pc + 0),
                                               *(GLenum *) (pc + 4),
                                               *(GLenum *) (pc + 8), answer));

    if (__glXErrorOccured()) {
        __GLX_BEGIN_REPLY(0);
        __GLX_SWAP_REPLY_HEADER();
    }
    else {
        __GLX_BEGIN_REPLY(compsize);
        __GLX_SWAP_REPLY_HEADER();
        __GLX_SWAP_INT(&width);
        __GLX_SWAP_INT(&height);
        ((xGLXGetConvolutionFilterReply *) &__glXReply)->width = width;
        ((xGLXGetConvolutionFilterReply *) &__glXReply)->height = height;
        __GLX_SEND_VOID_ARRAY(compsize);
    }

    return Success;
}

int
__glXDispSwap_GetConvolutionFilter(__GLXclientState * cl, GLbyte * pc)
{
    const GLXContextTag tag = __GLX_GET_SINGLE_CONTEXT_TAG(pc);

    return GetConvolutionFilter(cl, pc + __GLX_SINGLE_HDR_SIZE, tag);
}

int
__glXDispSwap_GetConvolutionFilterEXT(__GLXclientState * cl, GLbyte * pc)
{
    const GLXContextTag tag = __GLX_GET_VENDPRIV_CONTEXT_TAG(pc);

    return GetConvolutionFilter(cl, pc + __GLX_VENDPRIV_HDR_SIZE, tag);
}

static int
GetHistogram(__GLXclientState * cl, GLbyte * pc, GLXContextTag tag)
{
    GLint compsize;
    GLenum format, type, target;
    GLboolean swapBytes, reset;
    __GLXcontext *cx;
    ClientPtr client = cl->client;
    int error;

    __GLX_DECLARE_SWAP_VARIABLES;
    char *answer, answerBuffer[200];
    GLint width = 0;

    cx = __glXForceCurrent(cl, tag, &error);
    if (!cx) {
        return error;
    }

    __GLX_SWAP_INT(pc + 0);
    __GLX_SWAP_INT(pc + 4);
    __GLX_SWAP_INT(pc + 8);

    format = *(GLenum *) (pc + 4);
    type = *(GLenum *) (pc + 8);
    target = *(GLenum *) (pc + 0);
    swapBytes = *(GLboolean *) (pc + 12);
    reset = *(GLboolean *) (pc + 13);

    CALL_GetHistogramParameteriv(GET_DISPATCH(),
                                 (target, GL_HISTOGRAM_WIDTH, &width));
    /*
     * The one query above might fail if we're in a state where queries
     * are illegal, but then width would still be zero anyway.
     */
    compsize = __glGetTexImage_size(target, 1, format, type, width, 1, 1);
    if (compsize < 0)
        compsize = 0;

    CALL_PixelStorei(GET_DISPATCH(), (GL_PACK_SWAP_BYTES, !swapBytes));
    __GLX_GET_ANSWER_BUFFER(answer, cl, compsize, 1);
    __glXClearErrorOccured();
    CALL_GetHistogram(GET_DISPATCH(), (target, reset, format, type, answer));

    if (__glXErrorOccured()) {
        __GLX_BEGIN_REPLY(0);
        __GLX_SWAP_REPLY_HEADER();
    }
    else {
        __GLX_BEGIN_REPLY(compsize);
        __GLX_SWAP_REPLY_HEADER();
        __GLX_SWAP_INT(&width);
        ((xGLXGetHistogramReply *) &__glXReply)->width = width;
        __GLX_SEND_VOID_ARRAY(compsize);
    }

    return Success;
}

int
__glXDispSwap_GetHistogram(__GLXclientState * cl, GLbyte * pc)
{
    const GLXContextTag tag = __GLX_GET_SINGLE_CONTEXT_TAG(pc);

    return GetHistogram(cl, pc + __GLX_SINGLE_HDR_SIZE, tag);
}

int
__glXDispSwap_GetHistogramEXT(__GLXclientState * cl, GLbyte * pc)
{
    const GLXContextTag tag = __GLX_GET_VENDPRIV_CONTEXT_TAG(pc);

    return GetHistogram(cl, pc + __GLX_VENDPRIV_HDR_SIZE, tag);
}

static int
GetMinmax(__GLXclientState * cl, GLbyte * pc, GLXContextTag tag)
{
    GLint compsize;
    GLenum format, type, target;
    GLboolean swapBytes, reset;
    __GLXcontext *cx;
    ClientPtr client = cl->client;
    int error;

    __GLX_DECLARE_SWAP_VARIABLES;
    char *answer, answerBuffer[200];

    cx = __glXForceCurrent(cl, tag, &error);
    if (!cx) {
        return error;
    }

    __GLX_SWAP_INT(pc + 0);
    __GLX_SWAP_INT(pc + 4);
    __GLX_SWAP_INT(pc + 8);

    format = *(GLenum *) (pc + 4);
    type = *(GLenum *) (pc + 8);
    target = *(GLenum *) (pc + 0);
    swapBytes = *(GLboolean *) (pc + 12);
    reset = *(GLboolean *) (pc + 13);

    compsize = __glGetTexImage_size(target, 1, format, type, 2, 1, 1);
    if (compsize < 0)
        compsize = 0;

    CALL_PixelStorei(GET_DISPATCH(), (GL_PACK_SWAP_BYTES, !swapBytes));
    __GLX_GET_ANSWER_BUFFER(answer, cl, compsize, 1);
    __glXClearErrorOccured();
    CALL_GetMinmax(GET_DISPATCH(), (target, reset, format, type, answer));

    if (__glXErrorOccured()) {
        __GLX_BEGIN_REPLY(0);
        __GLX_SWAP_REPLY_HEADER();
    }
    else {
        __GLX_BEGIN_REPLY(compsize);
        __GLX_SWAP_REPLY_HEADER();
        __GLX_SEND_VOID_ARRAY(compsize);
    }

    return Success;
}

int
__glXDispSwap_GetMinmax(__GLXclientState * cl, GLbyte * pc)
{
    const GLXContextTag tag = __GLX_GET_SINGLE_CONTEXT_TAG(pc);

    return GetMinmax(cl, pc + __GLX_SINGLE_HDR_SIZE, tag);
}

int
__glXDispSwap_GetMinmaxEXT(__GLXclientState * cl, GLbyte * pc)
{
    const GLXContextTag tag = __GLX_GET_VENDPRIV_CONTEXT_TAG(pc);

    return GetMinmax(cl, pc + __GLX_VENDPRIV_HDR_SIZE, tag);
}

static int
GetColorTable(__GLXclientState * cl, GLbyte * pc, GLXContextTag tag)
{
    GLint compsize;
    GLenum format, type, target;
    GLboolean swapBytes;
    __GLXcontext *cx;
    ClientPtr client = cl->client;
    int error;

    __GLX_DECLARE_SWAP_VARIABLES;
    char *answer, answerBuffer[200];
    GLint width = 0;

    cx = __glXForceCurrent(cl, tag, &error);
    if (!cx) {
        return error;
    }

    __GLX_SWAP_INT(pc + 0);
    __GLX_SWAP_INT(pc + 4);
    __GLX_SWAP_INT(pc + 8);

    format = *(GLenum *) (pc + 4);
    type = *(GLenum *) (pc + 8);
    target = *(GLenum *) (pc + 0);
    swapBytes = *(GLboolean *) (pc + 12);

    CALL_GetColorTableParameteriv(GET_DISPATCH(),
                                  (target, GL_COLOR_TABLE_WIDTH, &width));
    /*
     * The one query above might fail if we're in a state where queries
     * are illegal, but then width would still be zero anyway.
     */
    compsize = __glGetTexImage_size(target, 1, format, type, width, 1, 1);
    if (compsize < 0)
        compsize = 0;

    CALL_PixelStorei(GET_DISPATCH(), (GL_PACK_SWAP_BYTES, !swapBytes));
    __GLX_GET_ANSWER_BUFFER(answer, cl, compsize, 1);
    __glXClearErrorOccured();
    CALL_GetColorTable(GET_DISPATCH(), (*(GLenum *) (pc + 0),
                                        *(GLenum *) (pc + 4),
                                        *(GLenum *) (pc + 8), answer));

    if (__glXErrorOccured()) {
        __GLX_BEGIN_REPLY(0);
        __GLX_SWAP_REPLY_HEADER();
    }
    else {
        __GLX_BEGIN_REPLY(compsize);
        __GLX_SWAP_REPLY_HEADER();
        __GLX_SWAP_INT(&width);
        ((xGLXGetColorTableReply *) &__glXReply)->width = width;
        __GLX_SEND_VOID_ARRAY(compsize);
    }

    return Success;
}

int
__glXDispSwap_GetColorTable(__GLXclientState * cl, GLbyte * pc)
{
    const GLXContextTag tag = __GLX_GET_SINGLE_CONTEXT_TAG(pc);

    return GetColorTable(cl, pc + __GLX_SINGLE_HDR_SIZE, tag);
}

int
__glXDispSwap_GetColorTableSGI(__GLXclientState * cl, GLbyte * pc)
{
    const GLXContextTag tag = __GLX_GET_VENDPRIV_CONTEXT_TAG(pc);

    return GetColorTable(cl, pc + __GLX_VENDPRIV_HDR_SIZE, tag);
}