source: vbox/trunk/src/VBox/HostServices/SharedOpenGL/crserverlib/server_getteximage.c@ 23750

/* Copyright (c) 2001, Stanford University
 * All rights reserved
 *
 * See the file LICENSE.txt for information on redistributing this software.
 */

#include "chromium.h"
#include "cr_error.h" 
#include "cr_mem.h"
#include "cr_pixeldata.h"
#include "server_dispatch.h"
#include "server.h"

void SERVER_DISPATCH_APIENTRY
crServerDispatchGetTexImage(GLenum target, GLint level, GLenum format,
                            GLenum type, GLvoid * pixels)
{
    GLsizei width, height, depth, size;
    GLvoid *buffer = NULL;

    cr_server.head_spu->dispatch_table.GetTexLevelParameteriv(target, level, GL_TEXTURE_WIDTH, &width);
    cr_server.head_spu->dispatch_table.GetTexLevelParameteriv(target, level, GL_TEXTURE_HEIGHT, &height);
    cr_server.head_spu->dispatch_table.GetTexLevelParameteriv(target, level, GL_TEXTURE_DEPTH, &depth);

    size = crTextureSize(format, type, width, height, depth);

    if (size && (buffer = crAlloc(size))) {
        /* Note, the other pixel PACK parameters (default values) should
         * be OK at this point.
         */
        cr_server.head_spu->dispatch_table.PixelStorei(GL_PACK_ALIGNMENT, 1);
        cr_server.head_spu->dispatch_table.GetTexImage(target, level, format, type, buffer);
        crServerReturnValue( buffer, size );
        crFree(buffer);
    }
    else {
        /* need to return _something_ to avoid blowing up */
        GLuint dummy = 0;
        crServerReturnValue( (GLvoid *) &dummy, sizeof(dummy) );
    }
}


#if CR_ARB_texture_compression

void SERVER_DISPATCH_APIENTRY
crServerDispatchGetCompressedTexImageARB(GLenum target, GLint level,
                                         GLvoid *img)
{
    GLint size;
    GLvoid *buffer=NULL;

    cr_server.head_spu->dispatch_table.GetTexLevelParameteriv(target, level, GL_TEXTURE_COMPRESSED_IMAGE_SIZE, &size);

    if (size && (buffer = crAlloc(size))) {
        /* XXX the pixel PACK parameter should be OK at this point */
        cr_server.head_spu->dispatch_table.GetCompressedTexImageARB(target, level, buffer);
        crServerReturnValue( buffer, size );
        crFree(buffer);
    }
    else {
        /* need to return _something_ to avoid blowing up */
        GLuint dummy = 0;
        crServerReturnValue( (GLvoid *) &dummy, sizeof(dummy) );
    }
}

#endif /* CR_ARB_texture_compression */