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* (C) Copyright IBM Corporation 2005
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* on the rights to use, copy, modify, merge, publish, distribute, sub
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* license, and/or sell copies of the Software, and to permit persons to whom
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* the Software is furnished to do so, subject to the following conditions:
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
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* VA LINUX SYSTEM, IBM AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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* USE OR OTHER DEALINGS IN THE SOFTWARE.
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* Simple test of glInterleavedArrays functionality. For each mode, two
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* meshes are drawn. One is drawn using interleaved arrays and the othe is
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* drawn using immediate mode. Both should look identical.
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* \author Ian Romanick <idr@us.ibm.com>
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static int Width = 400;
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static int Height = 300;
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static const GLfloat Near = 5.0, Far = 25.0;
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static const GLfloat t[][4] = {
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{ 0.5, 0.0, 0.0, 1.0 },
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{ 0.25, 0.5, 0.0, 1.0 },
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{ 0.75, 0.5, 0.0, 1.0 },
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{ 0.0, 1.0, 0.0, 1.0 },
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{ 0.5, 1.0, 0.0, 1.0 },
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{ 1.0, 1.0, 0.0, 1.0 },
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static const GLfloat c_f[][4] = {
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{ 1.0, 0.0, 0.0, 1.0 },
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{ 0.0, 1.0, 0.0, 1.0 },
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{ 0.0, 1.0, 0.0, 1.0 },
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{ 0.0, 0.0, 1.0, 1.0 },
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{ 1.0, 0.0, 1.0, 1.0 },
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{ 0.0, 0.0, 1.0, 1.0 },
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static const GLubyte c_ub[][4] = {
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{ 0xff, 0x00, 0x00, 0xff },
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{ 0x00, 0xff, 0x00, 0xff },
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{ 0x00, 0xff, 0x00, 0xff },
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{ 0x00, 0x00, 0xff, 0xff },
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{ 0xff, 0x00, 0xff, 0xff },
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{ 0x00, 0x00, 0xff, 0xff },
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static const GLfloat n[][3] = {
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static const GLfloat v[][4] = {
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{ 0.0, 1.0, 0.0, 1.0, },
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{ -0.5, 0.0, 0.0, 1.0, },
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{ 0.5, 0.0, 0.0, 1.0, },
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{ -1.0, -1.0, 0.0, 1.0, },
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{ 0.0, -1.0, 0.0, 1.0, },
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{ 1.0, -1.0, 0.0, 1.0, },
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static const unsigned indicies[12] = {
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#define NONE { NULL, 0, 0, 0, sizeof( NULL ) }
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#define V2F { v, 2, 2 * sizeof( GLfloat ), GL_FLOAT, sizeof( v[0] ) }
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#define V3F { v, 3, 3 * sizeof( GLfloat ), GL_FLOAT, sizeof( v[0] ) }
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#define V4F { v, 4, 4 * sizeof( GLfloat ), GL_FLOAT, sizeof( v[0] ) }
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#define C4UB { c_ub, 4, 4 * sizeof( GLubyte ), GL_UNSIGNED_BYTE, sizeof( c_ub[0] ) }
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#define C3F { c_f, 3, 3 * sizeof( GLfloat ), GL_FLOAT, sizeof( c_f[0] ) }
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#define C4F { c_f, 4, 4 * sizeof( GLfloat ), GL_FLOAT, sizeof( c_f[0] ) }
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#define T2F { t, 2, 2 * sizeof( GLfloat ), GL_FLOAT, sizeof( t[0] ) }
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#define T4F { t, 4, 4 * sizeof( GLfloat ), GL_FLOAT, sizeof( t[0] ) }
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#define N3F { n, 3, 3 * sizeof( GLfloat ), GL_FLOAT, sizeof( n[0] ) }
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struct interleave_info {
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#define INVALID_MODE 14
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#define INVALID_STRIDE 15
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struct interleave_info info[ NUM_MODES ][4] = {
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{ NONE, NONE, NONE, V2F },
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{ NONE, NONE, NONE, V3F },
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{ NONE, C4UB, NONE, V2F },
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{ NONE, C4UB, NONE, V3F },
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{ NONE, C3F, NONE, V3F },
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{ NONE, NONE, N3F, V3F },
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{ NONE, C4F, N3F, V3F },
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{ T2F, NONE, NONE, V3F },
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{ T4F, NONE, NONE, V4F },
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{ T2F, C4UB, NONE, V3F },
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{ T2F, C3F, NONE, V3F },
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{ T2F, NONE, N3F, V3F },
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{ T2F, C4F, N3F, V3F },
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{ T4F, C4F, N3F, V4F },
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const char * const mode_names[ NUM_MODES ] = {
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"GL_T2F_C4F_N3F_V3F",
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"GL_T4F_C4F_N3F_V4F",
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static unsigned interleave_mode = 0;
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static GLboolean use_invalid_mode = GL_FALSE;
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static GLboolean use_invalid_stride = GL_FALSE;
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#define DEREF(item,idx) (void *) & ((char *)curr_info[item].data)[idx * curr_info[item].stride]
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static void Display( void )
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const struct interleave_info * const curr_info = info[ interleave_mode ];
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/* 4 floats for 12 verticies for 4 data elements.
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char data[ (sizeof( GLfloat ) * 4) * 12 * 4 ];
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glClearColor(0.2, 0.2, 0.8, 0);
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glClear( GL_COLOR_BUFFER_BIT );
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glTranslatef(-1.5, 0, 0);
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glColor3fv( c_f[0] );
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if ( curr_info[0].data != NULL ) {
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glEnable( GL_TEXTURE_2D );
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glDisable( GL_TEXTURE_2D );
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glBegin(GL_TRIANGLES);
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for ( i = 0 ; i < 12 ; i++ ) {
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const unsigned index = indicies[i];
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/* Handle the vertex texture coordinate.
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if ( curr_info[0].data != NULL ) {
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if ( curr_info[0].count == 2 ) {
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glTexCoord2fv( DEREF(0, index) );
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glTexCoord4fv( DEREF(0, index) );
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(void) memcpy( & data[ offset ], DEREF(0, index),
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offset += curr_info[0].size;
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/* Handle the vertex color.
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if ( curr_info[1].data != NULL ) {
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if ( curr_info[1].type == GL_FLOAT ) {
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if ( curr_info[1].count == 3 ) {
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glColor3fv( DEREF(1, index) );
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glColor4fv( DEREF(1, index) );
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glColor4ubv( DEREF(1, index) );
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(void) memcpy( & data[ offset ], DEREF(1, index),
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offset += curr_info[1].size;
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/* Handle the vertex normal.
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if ( curr_info[2].data != NULL ) {
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glNormal3fv( DEREF(2, index) );
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(void) memcpy( & data[ offset ], DEREF(2, index),
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offset += curr_info[2].size;
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switch( curr_info[3].count ) {
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glVertex2fv( DEREF(3, index) );
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glVertex3fv( DEREF(3, index) );
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glVertex4fv( DEREF(3, index) );
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(void) memcpy( & data[ offset ], DEREF(3, index),
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offset += curr_info[3].size;
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glTranslatef(3.0, 0, 0);
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/* The masking with ~0x2A00 is a bit of a hack to make sure that format
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* ends up with an invalid value no matter what rand() returns.
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format = (use_invalid_mode)
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? (rand() & ~0x2A00) : GL_V2F + interleave_mode;
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stride = (use_invalid_stride) ? -abs(rand()) : 0;
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glInterleavedArrays( format, stride, data );
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printf("glInterleavedArrays(0x%04x, %d, %p) generated the error 0x%04x\n",
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format, stride, data, err );
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glDrawArrays( GL_TRIANGLES, 0, 12 );
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static void Reshape( int width, int height )
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GLfloat ar = (float) width / (float) height;
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glViewport( 0, 0, width, height );
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glMatrixMode( GL_PROJECTION );
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glFrustum( -ar, ar, -1.0, 1.0, Near, Far );
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glMatrixMode( GL_MODELVIEW );
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glTranslatef( 0.0, 0.0, -15.0 );
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static void Key( unsigned char key, int x, int y )
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static void ModeMenu( int entry )
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if ( entry == INVALID_MODE ) {
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use_invalid_mode = GL_TRUE;
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use_invalid_stride = GL_FALSE;
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else if ( entry == INVALID_STRIDE ) {
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use_invalid_mode = GL_FALSE;
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use_invalid_stride = GL_TRUE;
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use_invalid_mode = GL_FALSE;
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use_invalid_stride = GL_FALSE;
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interleave_mode = entry;
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static void Init( void )
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const char * const ver_string = (const char *)
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glGetString( GL_VERSION );
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const GLubyte tex[16] = {
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0xff, 0x00, 0xff, 0x00,
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0x00, 0xff, 0x00, 0xff,
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0xff, 0x00, 0xff, 0x00,
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0x00, 0xff, 0x00, 0xff,
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printf("GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER));
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printf("GL_VERSION = %s\n", ver_string);
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glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST );
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glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST );
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glTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE );
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glTexImage2D( GL_TEXTURE_2D, 0, GL_RGBA, 4, 4, 0,
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GL_LUMINANCE, GL_UNSIGNED_BYTE, tex );
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printf("Use the context menu (right click) to select the interleaved array mode.\n");
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printf("Press ESCAPE to exit.\n\n");
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printf("NOTE: This is *NOT* a very good test of the modes that use normals.\n");
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int main( int argc, char *argv[] )
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srand( time( NULL ) );
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glutInit( &argc, argv );
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glutInitWindowPosition( 0, 0 );
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glutInitWindowSize( Width, Height );
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glutInitDisplayMode( GLUT_RGB | GLUT_DOUBLE );
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glutCreateWindow( "glInterleavedArrays test" );
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glutReshapeFunc( Reshape );
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glutKeyboardFunc( Key );
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glutDisplayFunc( Display );
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glutCreateMenu( ModeMenu );
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for ( i = 0 ; i < NUM_MODES ; i++ ) {
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glutAddMenuEntry( mode_names[i], i);
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glutAddMenuEntry( "Random invalid mode", INVALID_MODE);
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glutAddMenuEntry( "Random invalid stride", INVALID_STRIDE);
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glutAttachMenu(GLUT_RIGHT_BUTTON);
added
removed
src/tests/interleave.c
