diff options
author | Ian Romanick <[email protected]> | 2005-11-14 23:31:05 +0000 |
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committer | Ian Romanick <[email protected]> | 2005-11-14 23:31:05 +0000 |
commit | e5700a1ba3e4fc91c253994818962c31b7259a1f (patch) | |
tree | 6cb37dbd206cf586db38ddb0e3a985611a4ad8cb /progs/tests/interleave.c | |
parent | cb6b47b795e3865690defc809416e5b5b95f226a (diff) |
Simple test of glInterleavedArrays functionality.
Diffstat (limited to 'progs/tests/interleave.c')
-rw-r--r-- | progs/tests/interleave.c | 365 |
1 files changed, 365 insertions, 0 deletions
diff --git a/progs/tests/interleave.c b/progs/tests/interleave.c new file mode 100644 index 00000000000..73da4341c2e --- /dev/null +++ b/progs/tests/interleave.c @@ -0,0 +1,365 @@ +/* + * (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 <[email protected]> + */ + +#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; +} |