--- /dev/null
+/*
+ * (C) Copyright IBM Corporation 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
+ * on 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
+ * VA LINUX SYSTEM, 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.
+ */
+
+/**
+ * \file interleave.c
+ *
+ * Simple test of glInterleavedArrays functionality. For each mode, two
+ * meshes are drawn. One is drawn using interleaved arrays and the othe is
+ * drawn using immediate mode. Both should look identical.
+ *
+ * \author Ian Romanick <idr@us.ibm.com>
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <GL/glut.h>
+
+static int Width = 400;
+static int Height = 300;
+static const GLfloat Near = 5.0, Far = 25.0;
+
+static const GLfloat t[][4] = {
+ { 0.5, 0.0, 0.0, 1.0 },
+
+ { 0.25, 0.5, 0.0, 1.0 },
+ { 0.75, 0.5, 0.0, 1.0 },
+
+ { 0.0, 1.0, 0.0, 1.0 },
+ { 0.5, 1.0, 0.0, 1.0 },
+ { 1.0, 1.0, 0.0, 1.0 },
+};
+
+static const GLfloat c_f[][4] = {
+ { 1.0, 0.0, 0.0, 1.0 },
+
+ { 0.0, 1.0, 0.0, 1.0 },
+ { 0.0, 1.0, 0.0, 1.0 },
+
+ { 0.0, 0.0, 1.0, 1.0 },
+ { 1.0, 0.0, 1.0, 1.0 },
+ { 0.0, 0.0, 1.0, 1.0 },
+};
+
+static const GLubyte c_ub[][4] = {
+ { 0xff, 0x00, 0x00, 0xff },
+
+ { 0x00, 0xff, 0x00, 0xff },
+ { 0x00, 0xff, 0x00, 0xff },
+
+ { 0x00, 0x00, 0xff, 0xff },
+ { 0xff, 0x00, 0xff, 0xff },
+ { 0x00, 0x00, 0xff, 0xff },
+};
+
+static const GLfloat n[][3] = {
+ { 0.0, 0.0, -1.0 },
+
+ { 0.0, 0.0, -1.0 },
+ { 0.0, 0.0, -1.0 },
+
+ { 0.0, 0.0, -1.0 },
+ { 0.0, 0.0, -1.0 },
+ { 0.0, 0.0, -1.0 },
+};
+
+static const GLfloat v[][4] = {
+ { 0.0, 1.0, 0.0, 1.0, },
+
+ { -0.5, 0.0, 0.0, 1.0, },
+ { 0.5, 0.0, 0.0, 1.0, },
+
+ { -1.0, -1.0, 0.0, 1.0, },
+ { 0.0, -1.0, 0.0, 1.0, },
+ { 1.0, -1.0, 0.0, 1.0, },
+};
+
+static const unsigned indicies[12] = {
+ 0, 1, 2,
+ 1, 3, 4,
+ 2, 4, 5,
+ 1, 4, 2
+};
+
+#define NONE { NULL, 0, 0, 0 }
+#define V2F { v, 2, 2 * sizeof( GLfloat ), GL_FLOAT, sizeof( v[0] ) }
+#define V3F { v, 3, 3 * sizeof( GLfloat ), GL_FLOAT, sizeof( v[0] ) }
+#define V4F { v, 4, 4 * sizeof( GLfloat ), GL_FLOAT, sizeof( v[0] ) }
+
+#define C4UB { c_ub, 4, 4 * sizeof( GLubyte ), GL_UNSIGNED_BYTE, sizeof( c_ub[0] ) }
+#define C3F { c_f, 3, 3 * sizeof( GLfloat ), GL_FLOAT, sizeof( c_f[0] ) }
+#define C4F { c_f, 4, 4 * sizeof( GLfloat ), GL_FLOAT, sizeof( c_f[0] ) }
+
+#define T2F { t, 2, 2 * sizeof( GLfloat ), GL_FLOAT, sizeof( t[0] ) }
+#define T4F { t, 4, 4 * sizeof( GLfloat ), GL_FLOAT, sizeof( t[0] ) }
+
+#define N3F { n, 3, 3 * sizeof( GLfloat ), GL_FLOAT, sizeof( n[0] ) }
+
+struct interleave_info {
+ const void * data;
+ unsigned count;
+ unsigned size;
+ GLenum type;
+ unsigned stride;
+};
+
+#define NUM_MODES 14
+
+struct interleave_info info[ NUM_MODES ][4] = {
+ { NONE, NONE, NONE, V2F },
+ { NONE, NONE, NONE, V3F },
+ { NONE, C4UB, NONE, V2F },
+ { NONE, C4UB, NONE, V3F },
+ { NONE, C3F, NONE, V3F },
+
+ { NONE, NONE, N3F, V3F },
+ { NONE, C4F, N3F, V3F },
+
+ { T2F, NONE, NONE, V3F },
+ { T4F, NONE, NONE, V4F },
+
+ { T2F, C4UB, NONE, V3F },
+ { T2F, C3F, NONE, V3F },
+ { T2F, NONE, N3F, V3F },
+ { T2F, C4F, N3F, V3F },
+ { T4F, C4F, N3F, V4F },
+};
+
+const char * const mode_names[ NUM_MODES ] = {
+ "GL_V2F",
+ "GL_V3F",
+ "GL_C4UB_V2F",
+ "GL_C4UB_V3F",
+ "GL_C3F_V3F",
+ "GL_N3F_V3F",
+ "GL_C4F_N3F_V3F",
+ "GL_T2F_V3F",
+ "GL_T4F_V4F",
+ "GL_T2F_C4UB_V3F",
+ "GL_T2F_C3F_V3F",
+ "GL_T2F_N3F_V3F",
+ "GL_T2F_C4F_N3F_V3F",
+ "GL_T4F_C4F_N3F_V4F",
+};
+
+unsigned interleave_mode = 0;
+
+#define DEREF(item,idx) (void *) & ((char *)curr_info[item].data)[idx * curr_info[item].stride]
+
+static void Display( void )
+{
+ const struct interleave_info * const curr_info = info[ interleave_mode ];
+
+ /* 4 floats for 12 verticies for 4 data elements.
+ */
+ char data[ (sizeof( GLfloat ) * 4) * 12 * 4 ];
+
+ unsigned i;
+ unsigned offset;
+
+
+ glClearColor(0.2, 0.2, 0.8, 0);
+ glClear( GL_COLOR_BUFFER_BIT );
+
+ glPushMatrix();
+
+ glTranslatef(-1.5, 0, 0);
+
+ glColor3fv( c_f[0] );
+
+ if ( curr_info[0].data != NULL ) {
+ glEnable( GL_TEXTURE_2D );
+ }
+ else {
+ glDisable( GL_TEXTURE_2D );
+ }
+
+
+ offset = 0;
+ glBegin(GL_TRIANGLES);
+ for ( i = 0 ; i < 12 ; i++ ) {
+ const unsigned index = indicies[i];
+
+
+ /* Handle the vertex texture coordinate.
+ */
+ if ( curr_info[0].data != NULL ) {
+ if ( curr_info[0].count == 2 ) {
+ glTexCoord2fv( DEREF(0, index) );
+ }
+ else {
+ glTexCoord4fv( DEREF(0, index) );
+ }
+
+ (void) memcpy( & data[ offset ], DEREF(0, index),
+ curr_info[0].size );
+ offset += curr_info[0].size;
+ }
+
+
+ /* Handle the vertex color.
+ */
+ if ( curr_info[1].data != NULL ) {
+ if ( curr_info[1].type == GL_FLOAT ) {
+ if ( curr_info[1].count == 3 ) {
+ glColor3fv( DEREF(1, index) );
+ }
+ else {
+ glColor4fv( DEREF(1, index) );
+ }
+ }
+ else {
+ glColor4ubv( DEREF(1, index) );
+ }
+
+ (void) memcpy( & data[ offset ], DEREF(1, index),
+ curr_info[1].size );
+ offset += curr_info[1].size;
+ }
+
+
+ /* Handle the vertex normal.
+ */
+ if ( curr_info[2].data != NULL ) {
+ glNormal3fv( DEREF(2, index) );
+
+ (void) memcpy( & data[ offset ], DEREF(2, index),
+ curr_info[2].size );
+ offset += curr_info[2].size;
+ }
+
+
+ switch( curr_info[3].count ) {
+ case 2:
+ glVertex2fv( DEREF(3, index) );
+ break;
+ case 3:
+ glVertex3fv( DEREF(3, index) );
+ break;
+ case 4:
+ glVertex4fv( DEREF(3, index) );
+ break;
+ }
+
+ (void) memcpy( & data[ offset ], DEREF(3, index),
+ curr_info[3].size );
+ offset += curr_info[3].size;
+ }
+ glEnd();
+
+
+ glTranslatef(3.0, 0, 0);
+ glInterleavedArrays( GL_V2F + interleave_mode, 0, data );
+ glDrawArrays( GL_TRIANGLES, 0, 12 );
+
+ glPopMatrix();
+
+ glutSwapBuffers();
+}
+
+
+static void Reshape( int width, int height )
+{
+ GLfloat ar = (float) width / (float) height;
+ Width = width;
+ Height = height;
+ glViewport( 0, 0, width, height );
+ glMatrixMode( GL_PROJECTION );
+ glLoadIdentity();
+ glFrustum( -ar, ar, -1.0, 1.0, Near, Far );
+ glMatrixMode( GL_MODELVIEW );
+ glLoadIdentity();
+ glTranslatef( 0.0, 0.0, -15.0 );
+}
+
+
+static void Key( unsigned char key, int x, int y )
+{
+ (void) x;
+ (void) y;
+ switch (key) {
+ case 27:
+ exit(0);
+ break;
+ }
+ glutPostRedisplay();
+}
+
+
+static void ModeMenu( int entry )
+{
+ interleave_mode = entry;
+}
+
+static void Init( void )
+{
+ const char * const ver_string = (const char * const)
+ glGetString( GL_VERSION );
+ const GLubyte tex[16] = {
+ 0xff, 0x00, 0xff, 0x00,
+ 0x00, 0xff, 0x00, 0xff,
+ 0xff, 0x00, 0xff, 0x00,
+ 0x00, 0xff, 0x00, 0xff,
+ };
+
+ printf("GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER));
+ printf("GL_VERSION = %s\n", ver_string);
+
+ glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST );
+ glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST );
+ glTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE );
+ glTexImage2D( GL_TEXTURE_2D, 0, GL_RGBA, 4, 4, 0,
+ GL_LUMINANCE, GL_UNSIGNED_BYTE, tex );
+
+ printf("Use the context menu (right click) to select the interleaved array mode.\n");
+ printf("Press ESCAPE to exit.\n\n");
+ printf("NOTE: This is *NOT* a very good test of the modes that use normals.\n");
+}
+
+
+int main( int argc, char *argv[] )
+{
+ unsigned i;
+
+ glutInit( &argc, argv );
+ glutInitWindowPosition( 0, 0 );
+ glutInitWindowSize( Width, Height );
+ glutInitDisplayMode( GLUT_RGB | GLUT_DOUBLE );
+ glutCreateWindow( "glInterleavedArrays test" );
+ glutReshapeFunc( Reshape );
+ glutKeyboardFunc( Key );
+ glutDisplayFunc( Display );
+
+ glutCreateMenu( ModeMenu );
+ for ( i = 0 ; i < NUM_MODES ; i++ ) {
+ glutAddMenuEntry( mode_names[i], i);
+ }
+
+ glutAttachMenu(GLUT_RIGHT_BUTTON);
+
+ Init();
+ glutMainLoop();
+ return 0;
+}
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