diff options
Diffstat (limited to 'progs/tests/texgenmix.c')
-rw-r--r-- | progs/tests/texgenmix.c | 642 |
1 files changed, 0 insertions, 642 deletions
diff --git a/progs/tests/texgenmix.c b/progs/tests/texgenmix.c deleted file mode 100644 index 008da8625e..0000000000 --- a/progs/tests/texgenmix.c +++ /dev/null @@ -1,642 +0,0 @@ - -/* - * Demonstrates mixed texgen/non-texgen texture coordinates. - */ - -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <GL/glew.h> -#include <GL/glut.h> - -#undef max -#undef min -#define max( a, b ) ((a) >= (b) ? (a) : (b)) -#define min( a, b ) ((a) <= (b) ? (a) : (b)) - -GLfloat labelColor0[4] = { 1.0, 1.0, 1.0, 1.0 }; -GLfloat labelColor1[4] = { 1.0, 1.0, 0.4, 1.0 }; -GLfloat *labelInfoColor = labelColor0; - -GLboolean doubleBuffered = GL_TRUE; -GLboolean drawTextured = GL_TRUE; - -int textureWidth = 64; -int textureHeight = 64; - -int winWidth = 580, winHeight = 720; - -const GLfloat texmat_swap_rq[16] = { 1.0, 0.0, 0.0, 0.0, - 0.0, 1.0, 0.0, 0.0, - 0.0, 0.0, 0.0, 1.0, - 0.0, 0.0, 1.0, 0.0}; - -const GLfloat nullPlane[4] = { 0.0, 0.0, 0.0, 0.0 }; -const GLfloat ObjPlaneS1[4] = { 1.0, 0.0, 1.0, 0.0 }; -const GLfloat ObjPlaneS2[4] = { 0.5, 0.0, 0.0, 0.0 }; -const GLfloat ObjPlaneS3[4] = { 1.0, 0.0, 0.0, 0.0 }; -const GLfloat ObjPlaneT[4] = { 0.0, 1.0, 0.0, 0.0 }; -const GLfloat ObjPlaneT2[4] = { 0.0, 0.5, 0.0, 0.0 }; -const GLfloat ObjPlaneT3[4] = { 0.0, 1.0, 0.0, 0.0 }; -const GLfloat ObjPlaneR[4] = { 0.0, 0.0, 1.0, 0.0 }; -const GLfloat ObjPlaneQ[4] = { 0.0, 0.0, 0.0, 0.5 }; - - -static void checkErrors( void ) -{ - GLenum error; - - while ( (error = glGetError()) != GL_NO_ERROR ) { - fprintf( stderr, "Error: %s\n", (char *) gluErrorString( error ) ); - } -} - -static void drawString( const char *string, GLfloat x, GLfloat y, - const GLfloat color[4] ) -{ - glColor4fv( color ); - glRasterPos2f( x, y ); - - while ( *string ) { - glutBitmapCharacter( GLUT_BITMAP_TIMES_ROMAN_10, *string ); - string++; - } -} - -static void begin2D( int width, int height ) -{ - glMatrixMode( GL_PROJECTION ); - - glPushMatrix(); - glLoadIdentity(); - - glOrtho( 0, width, 0, height, -1, 1 ); - glMatrixMode( GL_MODELVIEW ); - - glPushMatrix(); - glLoadIdentity(); -} - -static void end2D( void ) -{ - glMatrixMode( GL_PROJECTION ); - glPopMatrix(); - glMatrixMode( GL_MODELVIEW ); - glPopMatrix(); -} - -static void initialize( void ) -{ - glMatrixMode( GL_PROJECTION ); - glLoadIdentity(); - - glOrtho( -1.5, 1.5, -1.5, 1.5, -1.5, 1.5 ); - - glMatrixMode(GL_MODELVIEW); - glLoadIdentity(); - - glShadeModel( GL_FLAT ); -} - -/* ARGSUSED1 */ -static void keyboard( unsigned char c, int x, int y ) -{ - switch ( c ) { - case 't': - drawTextured = !drawTextured; - break; - case 27: /* Escape key should force exit. */ - exit(0); - break; - default: - break; - } - glutPostRedisplay(); -} - -/* ARGSUSED1 */ -static void special( int key, int x, int y ) -{ - switch ( key ) { - case GLUT_KEY_DOWN: - break; - case GLUT_KEY_UP: - break; - case GLUT_KEY_LEFT: - break; - case GLUT_KEY_RIGHT: - break; - default: - break; - } - glutPostRedisplay(); -} - -static void -reshape( int w, int h ) -{ - winWidth = w; - winHeight = h; - /* No need to call glViewPort here since "draw" calls it! */ -} - -static void loadTexture( int width, int height ) -{ - int alphaSize = 1; - int rgbSize = 3; - GLubyte *texImage, *p; - int elementsPerGroup, elementSize, groupSize, rowSize; - int i, j; - - - elementsPerGroup = alphaSize + rgbSize; - elementSize = sizeof(GLubyte); - groupSize = elementsPerGroup * elementSize; - rowSize = width * groupSize; - - if ( (texImage = (GLubyte *) malloc( height * rowSize ) ) == NULL ) { - fprintf( stderr, "texture malloc failed\n" ); - return; - } - - for ( i = 0 ; i < height ; i++ ) - { - p = texImage + i * rowSize; - - for ( j = 0 ; j < width ; j++ ) - { - if ( rgbSize > 0 ) - { - /** - ** +-----+-----+ - ** | | | - ** | R | G | - ** | | | - ** +-----+-----+ - ** | | | - ** | Y | B | - ** | | | - ** +-----+-----+ - **/ - if ( i > height / 2 ) { - if ( j < width / 2 ) { - p[0] = 0xff; - p[1] = 0x00; - p[2] = 0x00; - } else { - p[0] = 0x00; - p[1] = 0xff; - p[2] = 0x00; - } - } else { - if ( j < width / 2 ) { - p[0] = 0xff; - p[1] = 0xff; - p[2] = 0x00; - } else { - p[0] = 0x00; - p[1] = 0x00; - p[2] = 0xff; - } - } - p += 3 * elementSize; - } - - if ( alphaSize > 0 ) - { - /** - ** +-----------+ - ** | W | - ** | +-----+ | - ** | | | | - ** | | B | | - ** | | | | - ** | +-----+ | - ** | | - ** +-----------+ - **/ - int i2 = i - height / 2; - int j2 = j - width / 2; - int h8 = height / 8; - int w8 = width / 8; - if ( -h8 <= i2 && i2 <= h8 && -w8 <= j2 && j2 <= w8 ) { - p[0] = 0x00; - } else if ( -2 * h8 <= i2 && i2 <= 2 * h8 && -2 * w8 <= j2 && j2 <= 2 * w8 ) { - p[0] = 0x55; - } else if ( -3 * h8 <= i2 && i2 <= 3 * h8 && -3 * w8 <= j2 && j2 <= 3 * w8 ) { - p[0] = 0xaa; - } else { - p[0] = 0xff; - } - p += elementSize; - } - } - } - - glTexImage2D( GL_TEXTURE_2D, 0, - GL_RGBA, width, height, 0, - GL_RGBA, GL_UNSIGNED_BYTE, texImage ); - - free( texImage ); -} - - -static void drawSample( int x, int y, int w, int h, - int texgenenabled, int coordnr ) -{ - char buf[255]; - - glViewport( x, y, w, h ); - glScissor( x, y, w, h ); - - glClearColor( 0.1, 0.1, 0.1, 1.0 ); - glClear( GL_COLOR_BUFFER_BIT ); - - begin2D( w, h ); - if (texgenenabled == 2) { - sprintf( buf, "TexCoord%df", coordnr); - drawString( buf, 10, h - 15, labelInfoColor ); - sprintf( buf, "texgen enabled for %s coordinate(s)", coordnr == 2 ? "S" : "S/T"); - drawString( buf, 10, 5, labelInfoColor ); - } - else if (texgenenabled == 0) { - sprintf( buf, "TexCoord%df", coordnr); - drawString( buf, 10, h - 15, labelInfoColor ); - drawString( "no texgen", 10, 5, labelInfoColor ); - } - else if (texgenenabled == 1) { - drawString( "no TexCoord", 10, h - 15, labelInfoColor ); - sprintf( buf, "texgen enabled for %s coordinate(s)", - coordnr == 2 ? "S/T" : (coordnr == 3 ? "S/T/R" : "S/T/R/Q")); - drawString( buf, 10, 5, labelInfoColor ); - } - - end2D(); - - glTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE ); - - glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST ); - glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST ); - - glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP ); - glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP ); - - loadTexture( textureWidth, textureHeight ); - - if ( drawTextured ) { - glEnable( GL_TEXTURE_2D ); - } - - glDisable( GL_TEXTURE_GEN_S ); - glDisable( GL_TEXTURE_GEN_T ); - glDisable( GL_TEXTURE_GEN_R ); - glDisable( GL_TEXTURE_GEN_Q ); - - glMatrixMode( GL_TEXTURE ); - glLoadIdentity(); - glMatrixMode( GL_MODELVIEW ); - glPushMatrix(); - - switch (coordnr) { - case 2: - switch (texgenenabled) { - case 0: - glBegin( GL_QUADS ); - glTexCoord2f( 0.0, 0.0 ); - glVertex2f( -0.8, -0.8 ); - - glTexCoord2f( 1.0, 0.0 ); - glVertex2f( 0.8, -0.8 ); - - glTexCoord2f( 1.0, 1.0 ); - glVertex2f( 0.8, 0.8 ); - - glTexCoord2f( 0.0, 1.0 ); - glVertex2f( -0.8, 0.8 ); - glEnd(); - break; - case 1: - glTranslatef( -0.8, -0.8, 0.0 ); - glScalef( 1.6, 1.6, 1.0 ); - glTexGeni( GL_S, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR ); - glTexGeni( GL_T, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR ); - glTexGeni( GL_R, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR ); - glTexGeni( GL_Q, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR ); - glTexGenfv(GL_S, GL_OBJECT_PLANE, ObjPlaneS3); - glTexGenfv(GL_T, GL_OBJECT_PLANE, ObjPlaneT3); - glTexGenfv(GL_R, GL_OBJECT_PLANE, nullPlane); - glTexGenfv(GL_Q, GL_OBJECT_PLANE, nullPlane); - - glEnable( GL_TEXTURE_GEN_S ); - glEnable( GL_TEXTURE_GEN_T ); - - /* Issue a texcoord here to be sure Q isn't left over from a - * previous sample. - */ - glTexCoord1f( 0.0 ); - glBegin( GL_QUADS ); - glVertex2f( 0.0, 0.0 ); - glVertex2f( 1.0, 0.0 ); - glVertex2f( 1.0, 1.0 ); - glVertex2f( 0.0, 1.0 ); - glEnd(); - break; - case 2: - /* make sure that texgen T and non-texgen S coordinate are wrong */ - glTexGeni( GL_S, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR ); - glTexGeni( GL_T, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR ); - glTexGeni( GL_R, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR ); - glTexGeni( GL_Q, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR ); - glTexGenfv(GL_S, GL_OBJECT_PLANE, ObjPlaneS1); - glTexGenfv(GL_T, GL_OBJECT_PLANE, nullPlane); - glTexGenfv(GL_R, GL_OBJECT_PLANE, nullPlane); - glTexGenfv(GL_Q, GL_OBJECT_PLANE, nullPlane); - - glEnable( GL_TEXTURE_GEN_S ); - - glBegin( GL_QUADS ); - /* use z coordinate to get correct texgen values... */ - glTexCoord2f( 0.0, 0.0 ); - glVertex3f( -0.8, -0.8, 0.8 ); - - glTexCoord2f( 0.0, 0.0 ); - glVertex3f( 0.8, -0.8, 0.2 ); - - glTexCoord2f( 0.0, 1.0 ); - glVertex3f( 0.8, 0.8, 0.2 ); - - glTexCoord2f( 0.0, 1.0 ); - glVertex3f( -0.8, 0.8, 0.8 ); - glEnd(); - break; - } - break; - case 3: - glMatrixMode( GL_TEXTURE ); - glLoadMatrixf( texmat_swap_rq ); - glMatrixMode( GL_MODELVIEW ); - glTranslatef( -0.8, -0.8, 0.0 ); - glScalef( 1.6, 1.6, 1.0 ); - switch (texgenenabled) { - case 0: - glBegin( GL_QUADS ); - glTexCoord3f( 0.0, 0.0, 0.5 ); - glVertex2f( 0.0, 0.0 ); - - glTexCoord3f( 0.5, 0.0, 0.5 ); - glVertex2f( 1.0, 0.0 ); - - glTexCoord3f( 0.5, 0.5, 0.5 ); - glVertex2f( 1.0, 1.0 ); - - glTexCoord3f( 0.0, 0.5, 0.5 ); - glVertex2f( 0.0, 1.0 ); - glEnd(); - break; - case 1: - glTexGeni( GL_S, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR ); - glTexGeni( GL_T, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR ); - glTexGeni( GL_R, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR ); - glTexGeni( GL_Q, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR ); - glTexGenfv(GL_S, GL_OBJECT_PLANE, ObjPlaneS2); - glTexGenfv(GL_T, GL_OBJECT_PLANE, ObjPlaneT2); - glTexGenfv(GL_R, GL_OBJECT_PLANE, ObjPlaneR); - glTexGenfv(GL_Q, GL_OBJECT_PLANE, nullPlane); - - glEnable( GL_TEXTURE_GEN_S ); - glEnable( GL_TEXTURE_GEN_T ); - glEnable( GL_TEXTURE_GEN_R ); - - glTexCoord1f( 0.0 ); /* to make sure Q is 1.0 */ - glBegin( GL_QUADS ); - glVertex3f( 0.0, 0.0, 0.5 ); - glVertex3f( 1.0, 0.0, 0.5 ); - glVertex3f( 1.0, 1.0, 0.5 ); - glVertex3f( 0.0, 1.0, 0.5 ); - glEnd(); - break; - case 2: - /* make sure that texgen R/Q and non-texgen S/T coordinates are wrong */ - glTexGeni( GL_S, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR ); - glTexGeni( GL_T, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR ); - glTexGeni( GL_R, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR ); - glTexGeni( GL_Q, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR ); - glTexGenfv(GL_S, GL_OBJECT_PLANE, ObjPlaneS2); - glTexGenfv(GL_T, GL_OBJECT_PLANE, ObjPlaneT2); - glTexGenfv(GL_R, GL_OBJECT_PLANE, nullPlane); - glTexGenfv(GL_Q, GL_OBJECT_PLANE, nullPlane); - - glEnable( GL_TEXTURE_GEN_S ); - glEnable( GL_TEXTURE_GEN_T ); - - glBegin( GL_QUADS ); - glTexCoord3f( 0.0, 0.0, 0.5 ); - glVertex2f( 0.0, 0.0); - - glTexCoord3f( 0.0, 0.0, 0.5 ); - glVertex2f( 1.0, 0.0); - - glTexCoord3f( 0.0, 0.0, 0.5 ); - glVertex2f( 1.0, 1.0); - - glTexCoord3f( 0.0, 0.0, 0.5 ); - glVertex2f( 0.0, 1.0); - glEnd(); - break; - } - break; - case 4: - switch (texgenenabled) { - case 0: - glBegin( GL_QUADS ); - /* don't need r coordinate but still setting it I'm mean */ - glTexCoord4f( 0.0, 0.0, 0.0, 0.5 ); - glVertex2f( -0.8, -0.8 ); - - glTexCoord4f( 0.5, 0.0, 0.2, 0.5 ); - glVertex2f( 0.8, -0.8 ); - - glTexCoord4f( 0.5, 0.5, 0.5, 0.5 ); - glVertex2f( 0.8, 0.8 ); - - glTexCoord4f( 0.0, 0.5, 0.5, 0.5 ); - glVertex2f( -0.8, 0.8 ); - glEnd(); - break; - case 1: - glTranslatef( -0.8, -0.8, 0.0 ); - glScalef( 1.6, 1.6, 1.0 ); - /* make sure that texgen R/Q and non-texgen S/T coordinates are wrong */ - glTexGeni( GL_S, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR ); - glTexGeni( GL_T, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR ); - glTexGeni( GL_R, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR ); - glTexGeni( GL_Q, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR ); - glTexGenfv(GL_S, GL_OBJECT_PLANE, ObjPlaneS2); - glTexGenfv(GL_T, GL_OBJECT_PLANE, ObjPlaneT2); - glTexGenfv(GL_R, GL_OBJECT_PLANE, ObjPlaneR); - glTexGenfv(GL_Q, GL_OBJECT_PLANE, ObjPlaneQ); - - glEnable( GL_TEXTURE_GEN_S ); - glEnable( GL_TEXTURE_GEN_T ); - glEnable( GL_TEXTURE_GEN_R ); - glEnable( GL_TEXTURE_GEN_Q ); - - glBegin( GL_QUADS ); - glVertex2f( 0.0, 0.0 ); - glVertex2f( 1.0, 0.0 ); - glVertex2f( 1.0, 1.0 ); - glVertex2f( 0.0, 1.0 ); - glEnd(); - break; - case 2: - glTranslatef( -0.8, -0.8, 0.0 ); - glScalef( 1.6, 1.6, 1.0 ); - /* make sure that texgen R/Q and non-texgen S/T coordinates are wrong */ - glTexGeni( GL_S, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR ); - glTexGeni( GL_T, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR ); - glTexGeni( GL_R, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR ); - glTexGeni( GL_Q, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR ); - glTexGenfv(GL_S, GL_OBJECT_PLANE, ObjPlaneS2); - glTexGenfv(GL_T, GL_OBJECT_PLANE, ObjPlaneT2); - glTexGenfv(GL_R, GL_OBJECT_PLANE, nullPlane); - glTexGenfv(GL_Q, GL_OBJECT_PLANE, nullPlane); - - glEnable( GL_TEXTURE_GEN_S ); - glEnable( GL_TEXTURE_GEN_T ); - - glBegin( GL_QUADS ); - glTexCoord4f( 0.0, 0.0, 0.0, 0.5 ); - glVertex2f( 0.0, 0.0 ); - - glTexCoord4f( 0.0, 0.0, 0.2, 0.5 ); - glVertex2f( 1.0, 0.0 ); - - glTexCoord4f( 0.0, 0.0, 0.5, 0.5 ); - glVertex2f( 1.0, 1.0 ); - - glTexCoord4f( 0.0, 0.0, 0.75, 0.5 ); - glVertex2f( 0.0, 1.0 ); - glEnd(); - break; - } - break; - } - - glPopMatrix(); - glDisable( GL_TEXTURE_2D ); - -} - -static void display( void ) -{ - int numX = 3, numY = 3; - float xBase = (float) winWidth * 0.01; - float xOffset = (winWidth - xBase) / numX; - float xSize = max( xOffset - xBase, 1 ); - float yBase = (float) winHeight * 0.01; - float yOffset = (winHeight - yBase) / numY; - float ySize = max( yOffset - yBase, 1 ); - float x, y; - int i, j; - - glViewport( 0, 0, winWidth, winHeight ); - glDisable( GL_SCISSOR_TEST ); - glClearColor( 0.0, 0.0, 0.0, 0.0 ); - glClear( GL_COLOR_BUFFER_BIT ); - glEnable( GL_SCISSOR_TEST ); - - x = xBase; - y = (winHeight - 1) - yOffset; - - for ( i = 0 ; i < numY ; i++ ) - { - - labelInfoColor = labelColor1; - - - for ( j = 0 ; j < numX ; j++ ) { - drawSample( x, y, xSize, ySize, i, j+2 ); - x += xOffset; - } - - x = xBase; - y -= yOffset; - } - - if ( doubleBuffered ) { - glutSwapBuffers(); - } else { - glFlush(); - } - - checkErrors(); -} - -static void usage( char *name ) -{ - fprintf( stderr, "usage: %s [ options ]\n", name ); - fprintf( stderr, "\n" ); - fprintf( stderr, "options:\n" ); - fprintf( stderr, " -sb single buffered\n" ); - fprintf( stderr, " -db double buffered\n" ); - fprintf( stderr, " -info print OpenGL driver info\n" ); -} - -static void instructions( void ) -{ - fprintf( stderr, "texgenmix - mixed texgen/non-texgen texture coordinate test\n" ); - fprintf( stderr, "all quads should look the same!\n" ); - fprintf( stderr, "\n" ); - fprintf( stderr, " [t] - toggle texturing\n" ); -} - -int main( int argc, char *argv[] ) -{ - GLboolean info = GL_FALSE; - int i; - - glutInit( &argc, argv ); - - for ( i = 1 ; i < argc ; i++ ) { - if ( !strcmp( "-sb", argv[i] ) ) { - doubleBuffered = GL_FALSE; - } else if ( !strcmp( "-db", argv[i] ) ) { - doubleBuffered = GL_TRUE; - } else if ( !strcmp( "-info", argv[i] ) ) { - info = GL_TRUE; - } else { - usage( argv[0] ); - exit( 1 ); - } - } - - if ( doubleBuffered ) { - glutInitDisplayMode( GLUT_RGB | GLUT_DOUBLE ); - } else { - glutInitDisplayMode( GLUT_RGB | GLUT_SINGLE ); - } - - glutInitWindowSize( winWidth, winHeight ); - glutInitWindowPosition( 0, 0 ); - glutCreateWindow( "Mixed texgen/non-texgen texture coordinate test" ); - glewInit(); - - initialize(); - instructions(); - - if ( info ) { - printf( "\n" ); - printf( "GL_RENDERER = %s\n", (char *) glGetString( GL_RENDERER ) ); - printf( "GL_VERSION = %s\n", (char *) glGetString( GL_VERSION ) ); - printf( "GL_VENDOR = %s\n", (char *) glGetString( GL_VENDOR ) ) ; - printf( "GL_EXTENSIONS = %s\n", (char *) glGetString( GL_EXTENSIONS ) ); - } - - glutDisplayFunc( display ); - glutReshapeFunc( reshape ); - glutKeyboardFunc( keyboard ); - glutSpecialFunc( special ); - glutMainLoop(); - - return 0; -} |