/* * (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 */ #include #include #include #include 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; }