single2.c

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/* $XFree86: xc/lib/GL/glx/single2.c,v 1.10 2004/02/11 19:48:16 dawes Exp $ */
/*
** License Applicability. Except to the extent portions of this file are
** made subject to an alternative license as permitted in the SGI Free
** Software License B, Version 1.1 (the "License"), the contents of this
** file are subject only to the provisions of the License. You may not use
** this file except in compliance with the License. You may obtain a copy
** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
** 
** http://oss.sgi.com/projects/FreeB
** 
** Note that, as provided in the License, the Software is distributed on an
** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
** 
** Original Code. The Original Code is: OpenGL Sample Implementation,
** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
** Copyright in any portions created by third parties is as indicated
** elsewhere herein. All Rights Reserved.
** 
** Additional Notice Provisions: The application programming interfaces
** established by SGI in conjunction with the Original Code are The
** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
** Window System(R) (Version 1.3), released October 19, 1998. This software
** was created using the OpenGL(R) version 1.2.1 Sample Implementation
** published by SGI, but has not been independently verified as being
** compliant with the OpenGL(R) version 1.2.1 Specification.
**
*/

#include <stdio.h>
#include <assert.h>
#include "glxclient.h"
#include "packsingle.h"
#include "glxextensions.h"
#include "indirect.h"
#include "indirect_vertex_array.h"

/* Used for GL_ARB_transpose_matrix */
static void TransposeMatrixf(GLfloat m[16])
{
    int i, j;
    for (i = 0; i < 4; i++) {
        for (j = 0; j < i; j++) {
            GLfloat tmp = m[i*4+j];
            m[i*4+j] = m[j*4+i];
            m[j*4+i] = tmp;
        }
    }
}

/* Used for GL_ARB_transpose_matrix */
static void TransposeMatrixb(GLboolean m[16])
{
    int i, j;
    for (i = 0; i < 4; i++) {
        for (j = 0; j < i; j++) {
            GLboolean tmp = m[i*4+j];
            m[i*4+j] = m[j*4+i];
            m[j*4+i] = tmp;
        }
    }
}

/* Used for GL_ARB_transpose_matrix */
static void TransposeMatrixd(GLdouble m[16])
{
    int i, j;
    for (i = 0; i < 4; i++) {
        for (j = 0; j < i; j++) {
            GLdouble tmp = m[i*4+j];
            m[i*4+j] = m[j*4+i];
            m[j*4+i] = tmp;
        }
    }
}

/* Used for GL_ARB_transpose_matrix */
static void TransposeMatrixi(GLint m[16])
{
    int i, j;
    for (i = 0; i < 4; i++) {
        for (j = 0; j < i; j++) {
            GLint tmp = m[i*4+j];
            m[i*4+j] = m[j*4+i];
            m[j*4+i] = tmp;
        }
    }
}


/**
 * Remap a transpose-matrix enum to a non-transpose-matrix enum.  Enums
 * that are not transpose-matrix enums are unaffected.
 */
static GLenum
RemapTransposeEnum( GLenum e )
{
    switch( e ) {
    case GL_TRANSPOSE_MODELVIEW_MATRIX:
    case GL_TRANSPOSE_PROJECTION_MATRIX:
    case GL_TRANSPOSE_TEXTURE_MATRIX:
	return e - (GL_TRANSPOSE_MODELVIEW_MATRIX - GL_MODELVIEW_MATRIX);
    case GL_TRANSPOSE_COLOR_MATRIX:
	return GL_COLOR_MATRIX;
    default:
	return e;
    };
}


GLenum __indirect_glGetError(void)
{
    __GLX_SINGLE_DECLARE_VARIABLES();
    GLuint retval = GL_NO_ERROR;
    xGLXGetErrorReply reply;

    if (gc->error) {
	/* Use internal error first */
	retval = gc->error;
	gc->error = GL_NO_ERROR;
	return retval;
    }

    __GLX_SINGLE_LOAD_VARIABLES();
    __GLX_SINGLE_BEGIN(X_GLsop_GetError,0);
    __GLX_SINGLE_READ_XREPLY();
    retval = reply.error;
    __GLX_SINGLE_END();

    return retval;
}


/**
 * Get the selected attribute from the client state.
 * 
 * \returns
 * On success \c GL_TRUE is returned.  Otherwise, \c GL_FALSE is returned.
 */
static GLboolean
get_client_data( __GLXattribute * state, GLenum cap, GLintptr * data )
{
    GLboolean retval = GL_TRUE;
    const GLint tex_unit = __glXGetActiveTextureUnit( state );


    switch( cap ) {
    case GL_VERTEX_ARRAY:
    case GL_NORMAL_ARRAY:
    case GL_COLOR_ARRAY:
    case GL_INDEX_ARRAY:
    case GL_EDGE_FLAG_ARRAY:
    case GL_SECONDARY_COLOR_ARRAY:
    case GL_FOG_COORD_ARRAY:
	retval = __glXGetArrayEnable( state, cap, 0, data );
	break;

    case GL_VERTEX_ARRAY_SIZE:
	retval = __glXGetArraySize( state, GL_VERTEX_ARRAY, 0, data );
	break;
    case GL_COLOR_ARRAY_SIZE:
	retval = __glXGetArraySize( state, GL_COLOR_ARRAY, 0, data );
	break;
    case GL_SECONDARY_COLOR_ARRAY_SIZE:
	retval = __glXGetArraySize( state, GL_SECONDARY_COLOR_ARRAY, 0, data );
	break;

    case GL_VERTEX_ARRAY_TYPE:
	retval = __glXGetArrayType( state, GL_VERTEX_ARRAY, 0, data );
	break;
    case GL_NORMAL_ARRAY_TYPE:
	retval = __glXGetArrayType( state, GL_NORMAL_ARRAY, 0, data );
	break;
    case GL_INDEX_ARRAY_TYPE:
	retval = __glXGetArrayType( state, GL_INDEX_ARRAY, 0, data );
	break;
    case GL_COLOR_ARRAY_TYPE:
	retval = __glXGetArrayType( state, GL_COLOR_ARRAY, 0, data );
	break;
    case GL_SECONDARY_COLOR_ARRAY_TYPE:
	retval = __glXGetArrayType( state, GL_SECONDARY_COLOR_ARRAY, 0, data );
	break;
    case GL_FOG_COORD_ARRAY_TYPE:
	retval = __glXGetArrayType( state, GL_FOG_COORD_ARRAY, 0, data );
	break;

    case GL_VERTEX_ARRAY_STRIDE:
	retval = __glXGetArrayStride( state, GL_VERTEX_ARRAY, 0, data );
	break;
    case GL_NORMAL_ARRAY_STRIDE:
	retval = __glXGetArrayStride( state, GL_NORMAL_ARRAY, 0, data );
	break;
    case GL_INDEX_ARRAY_STRIDE:
	retval = __glXGetArrayStride( state, GL_INDEX_ARRAY, 0, data );
	break;
    case GL_EDGE_FLAG_ARRAY_STRIDE:
	retval = __glXGetArrayStride( state, GL_EDGE_FLAG_ARRAY, 0, data );
	break;
    case GL_COLOR_ARRAY_STRIDE:
	retval = __glXGetArrayStride( state, GL_COLOR_ARRAY, 0, data );
	break;
    case GL_SECONDARY_COLOR_ARRAY_STRIDE:
	retval = __glXGetArrayStride( state, GL_SECONDARY_COLOR_ARRAY, 0, data );
	break;
    case GL_FOG_COORD_ARRAY_STRIDE:
	retval = __glXGetArrayStride( state, GL_FOG_COORD_ARRAY, 0, data );
	break;

    case GL_TEXTURE_COORD_ARRAY:
	retval = __glXGetArrayEnable( state, GL_TEXTURE_COORD_ARRAY, tex_unit, data );
	break;
    case GL_TEXTURE_COORD_ARRAY_SIZE:
	retval = __glXGetArraySize( state, GL_TEXTURE_COORD_ARRAY, tex_unit, data );
	break;
    case GL_TEXTURE_COORD_ARRAY_TYPE:
	retval = __glXGetArrayType( state, GL_TEXTURE_COORD_ARRAY, tex_unit, data );
	break;
    case GL_TEXTURE_COORD_ARRAY_STRIDE:
	retval = __glXGetArrayStride( state, GL_TEXTURE_COORD_ARRAY, tex_unit, data );
	break;

    case GL_MAX_ELEMENTS_VERTICES:
    case GL_MAX_ELEMENTS_INDICES:
	retval = GL_TRUE;
	*data = ~0UL;
	break;

    
    case GL_PACK_ROW_LENGTH:
	*data = (GLintptr)state->storePack.rowLength;
	break;
    case GL_PACK_IMAGE_HEIGHT:
	*data = (GLintptr)state->storePack.imageHeight;
	break;
    case GL_PACK_SKIP_ROWS:
	*data = (GLintptr)state->storePack.skipRows;
	break;
    case GL_PACK_SKIP_PIXELS:
	*data = (GLintptr)state->storePack.skipPixels;
	break;
    case GL_PACK_SKIP_IMAGES:
	*data = (GLintptr)state->storePack.skipImages;
	break;
    case GL_PACK_ALIGNMENT:
	*data = (GLintptr)state->storePack.alignment;
	break;
    case GL_PACK_SWAP_BYTES:
	*data = (GLintptr)state->storePack.swapEndian;
	break;
    case GL_PACK_LSB_FIRST:
	*data = (GLintptr)state->storePack.lsbFirst;
	break;
    case GL_UNPACK_ROW_LENGTH:
	*data = (GLintptr)state->storeUnpack.rowLength;
	break;
    case GL_UNPACK_IMAGE_HEIGHT:
	*data = (GLintptr)state->storeUnpack.imageHeight;
	break;
    case GL_UNPACK_SKIP_ROWS:
	*data = (GLintptr)state->storeUnpack.skipRows;
	break;
    case GL_UNPACK_SKIP_PIXELS:
	*data = (GLintptr)state->storeUnpack.skipPixels;
	break;
    case GL_UNPACK_SKIP_IMAGES:
	*data = (GLintptr)state->storeUnpack.skipImages;
	break;
    case GL_UNPACK_ALIGNMENT:
	*data = (GLintptr)state->storeUnpack.alignment;
	break;
    case GL_UNPACK_SWAP_BYTES:
	*data = (GLintptr)state->storeUnpack.swapEndian;
	break;
    case GL_UNPACK_LSB_FIRST:
	*data = (GLintptr)state->storeUnpack.lsbFirst;
	break;
    case GL_MAX_CLIENT_ATTRIB_STACK_DEPTH:
	*data = (GLintptr)__GL_CLIENT_ATTRIB_STACK_DEPTH;
	break;
    case GL_CLIENT_ACTIVE_TEXTURE:
	*data = (GLintptr)(tex_unit + GL_TEXTURE0);
	break;

    default:
	retval = GL_FALSE;
	break;
    }


    return retval;
}


void __indirect_glGetBooleanv(GLenum val, GLboolean *b)
{
    const GLenum origVal = val;
    __GLX_SINGLE_DECLARE_VARIABLES();
    __GLXattribute * state = (__GLXattribute *)(gc->client_state_private);
    xGLXSingleReply reply;

    val = RemapTransposeEnum( val );

    __GLX_SINGLE_LOAD_VARIABLES();
    __GLX_SINGLE_BEGIN(X_GLsop_GetBooleanv,4);
    __GLX_SINGLE_PUT_LONG(0,val);
    __GLX_SINGLE_READ_XREPLY();
    __GLX_SINGLE_GET_SIZE(compsize);

    if (compsize == 0) {
	/*
	** Error occured; don't modify user's buffer.
	*/
    } else {
	GLintptr data;

	/*
	** We still needed to send the request to the server in order to
	** find out whether it was legal to make a query (it's illegal,
	** for example, to call a query between glBegin() and glEnd()).
	*/

	if ( get_client_data( state, val, & data ) ) {
	    *b = (GLboolean) data;
	}
	else {
	    /*
	     ** Not a local value, so use what we got from the server.
	     */
	    if (compsize == 1) {
		__GLX_SINGLE_GET_CHAR(b);
	    } else {
		__GLX_SINGLE_GET_CHAR_ARRAY(b,compsize);
		if (val != origVal) {
		    /* matrix transpose */
		    TransposeMatrixb(b);
                }
	    }
	}
    }
    __GLX_SINGLE_END();
}

void __indirect_glGetDoublev(GLenum val, GLdouble *d)
{
    const GLenum origVal = val;
    __GLX_SINGLE_DECLARE_VARIABLES();
    __GLXattribute * state = (__GLXattribute *)(gc->client_state_private);
    xGLXSingleReply reply;

    val = RemapTransposeEnum( val );

    __GLX_SINGLE_LOAD_VARIABLES();
    __GLX_SINGLE_BEGIN(X_GLsop_GetDoublev,4);
    __GLX_SINGLE_PUT_LONG(0,val);
    __GLX_SINGLE_READ_XREPLY();
    __GLX_SINGLE_GET_SIZE(compsize);

    if (compsize == 0) {
	/*
	** Error occured; don't modify user's buffer.
	*/
    } else {
	GLintptr data;

	/*
	** We still needed to send the request to the server in order to
	** find out whether it was legal to make a query (it's illegal,
	** for example, to call a query between glBegin() and glEnd()).
	*/

	if ( get_client_data( state, val, & data ) ) {
	    *d = (GLdouble) data;
	}
	else {
	    /*
	     ** Not a local value, so use what we got from the server.
	     */
	    if (compsize == 1) {
		__GLX_SINGLE_GET_DOUBLE(d);
	    } else {
		__GLX_SINGLE_GET_DOUBLE_ARRAY(d,compsize);
		if (val != origVal) {
		    /* matrix transpose */
		    TransposeMatrixd(d);
		}
	    }
	}
    }
    __GLX_SINGLE_END();
}

void __indirect_glGetFloatv(GLenum val, GLfloat *f)
{
    const GLenum origVal = val;
    __GLX_SINGLE_DECLARE_VARIABLES();
    __GLXattribute * state = (__GLXattribute *)(gc->client_state_private);
    xGLXSingleReply reply;

    val = RemapTransposeEnum( val );

    __GLX_SINGLE_LOAD_VARIABLES();
    __GLX_SINGLE_BEGIN(X_GLsop_GetFloatv,4);
    __GLX_SINGLE_PUT_LONG(0,val);
    __GLX_SINGLE_READ_XREPLY();
    __GLX_SINGLE_GET_SIZE(compsize);

    if (compsize == 0) {
	/*
	** Error occured; don't modify user's buffer.
	*/