+++ /dev/null
-
-/*
- * Test multitexture and paletted textures.
- */
-
-#include <assert.h>
-#include <math.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <stddef.h> /* for ptrdiff_t, referenced by GL.h when GL_GLEXT_LEGACY defined */
-#ifdef _WIN32
-#include <windows.h>
-#endif
-#define GL_GLEXT_LEGACY
-#include <GL/glew.h>
-#include <GL/glut.h>
-
-#include "../util/readtex.c" /* I know, this is a hack. */
-
-#define TEXTURE_1_FILE "../images/tile.rgb"
-#define TEXTURE_2_FILE "../images/reflect.rgb"
-
-#define TEX0 1
-#define TEX1 2
-#define TEXBOTH 3
-#define ANIMATE 10
-#define QUIT 100
-
-static GLboolean Animate = GL_TRUE;
-
-static GLfloat Drift = 0.0;
-static GLfloat Xrot = 20.0, Yrot = 30.0, Zrot = 0.0;
-
-
-
-static void Idle( void )
-{
- if (Animate) {
- Drift += 0.05;
- if (Drift >= 1.0)
- Drift = 0.0;
-
-#ifdef GL_ARB_multitexture
- glActiveTextureARB(GL_TEXTURE0_ARB);
-#endif
- glMatrixMode(GL_TEXTURE);
- glLoadIdentity();
- glTranslatef(Drift, 0.0, 0.0);
- glMatrixMode(GL_MODELVIEW);
-
-#ifdef GL_ARB_multitexture
- glActiveTextureARB(GL_TEXTURE1_ARB);
-#endif
- glMatrixMode(GL_TEXTURE);
- glLoadIdentity();
- glTranslatef(0.0, Drift, 0.0);
- glMatrixMode(GL_MODELVIEW);
-
- glutPostRedisplay();
- }
-}
-
-
-static void DrawObject(void)
-{
- glBegin(GL_QUADS);
-
-#ifdef GL_ARB_multitexture
- glMultiTexCoord2fARB(GL_TEXTURE0_ARB, 0.0, 0.0);
- glMultiTexCoord2fARB(GL_TEXTURE1_ARB, 0.0, 0.0);
- glVertex2f(-1.0, -1.0);
-
- glMultiTexCoord2fARB(GL_TEXTURE0_ARB, 2.0, 0.0);
- glMultiTexCoord2fARB(GL_TEXTURE1_ARB, 1.0, 0.0);
- glVertex2f(1.0, -1.0);
-
- glMultiTexCoord2fARB(GL_TEXTURE0_ARB, 2.0, 2.0);
- glMultiTexCoord2fARB(GL_TEXTURE1_ARB, 1.0, 1.0);
- glVertex2f(1.0, 1.0);
-
- glMultiTexCoord2fARB(GL_TEXTURE0_ARB, 0.0, 2.0);
- glMultiTexCoord2fARB(GL_TEXTURE1_ARB, 0.0, 1.0);
- glVertex2f(-1.0, 1.0);
-#else
- glTexCoord2f(0.0, 0.0);
- glVertex2f(-1.0, -1.0);
-
- glTexCoord2f(1.0, 0.0);
- glVertex2f(1.0, -1.0);
-
- glTexCoord2f(1.0, 1.0);
- glVertex2f(1.0, 1.0);
-
- glTexCoord2f(0.0, 1.0);
- glVertex2f(-1.0, 1.0);
-#endif
-
- glEnd();
-}
-
-
-
-static void Display( void )
-{
- glClear( GL_COLOR_BUFFER_BIT );
-
- glPushMatrix();
- glRotatef(Xrot, 1.0, 0.0, 0.0);
- glRotatef(Yrot, 0.0, 1.0, 0.0);
- glRotatef(Zrot, 0.0, 0.0, 1.0);
- glScalef(5.0, 5.0, 5.0);
- DrawObject();
- glPopMatrix();
-
- glutSwapBuffers();
-}
-
-
-static void Reshape( int width, int height )
-{
- glViewport( 0, 0, width, height );
- glMatrixMode( GL_PROJECTION );
- glLoadIdentity();
- glFrustum( -1.0, 1.0, -1.0, 1.0, 10.0, 100.0 );
- /*glOrtho( -6.0, 6.0, -6.0, 6.0, 10.0, 100.0 );*/
- glMatrixMode( GL_MODELVIEW );
- glLoadIdentity();
- glTranslatef( 0.0, 0.0, -70.0 );
-}
-
-
-static void ModeMenu(int entry)
-{
- GLboolean enable0 = GL_FALSE, enable1 = GL_FALSE;
- if (entry==TEX0) {
- enable0 = GL_TRUE;
- }
- else if (entry==TEX1) {
- enable1 = GL_TRUE;
- }
- else if (entry==TEXBOTH) {
- enable0 = GL_TRUE;
- enable1 = GL_TRUE;
- }
- else if (entry==ANIMATE) {
- Animate = !Animate;
- }
- else if (entry==QUIT) {
- exit(0);
- }
-
- if (entry != ANIMATE) {
-#ifdef GL_ARB_multitexture
- glActiveTextureARB(GL_TEXTURE0_ARB);
-#endif
- if (enable0) {
- glEnable(GL_TEXTURE_2D);
- }
- else
- glDisable(GL_TEXTURE_2D);
-
-#ifdef GL_ARB_multitexture
- glActiveTextureARB(GL_TEXTURE1_ARB);
-#endif
- if (enable1) {
- glEnable(GL_TEXTURE_2D);
- }
- else
- glDisable(GL_TEXTURE_2D);
- }
-
- glutPostRedisplay();
-}
-
-
-static void Key( unsigned char key, int x, int y )
-{
- (void) x;
- (void) y;
- switch (key) {
- case 27:
- exit(0);
- break;
- }
- glutPostRedisplay();
-}
-
-
-static void SpecialKey( int key, int x, int y )
-{
- float step = 3.0;
- (void) x;
- (void) y;
-
- switch (key) {
- case GLUT_KEY_UP:
- Xrot += step;
- break;
- case GLUT_KEY_DOWN:
- Xrot -= step;
- break;
- case GLUT_KEY_LEFT:
- Yrot += step;
- break;
- case GLUT_KEY_RIGHT:
- Yrot -= step;
- break;
- }
- glutPostRedisplay();
-}
-
-
-static void load_tex(const char *fname, int channel)
-{
- GLubyte *image;
- GLenum format;
- GLint w, h;
- GLubyte *grayImage;
- int i;
- GLubyte table[256][4];
-
- image = LoadRGBImage(fname, &w, &h, &format);
- if (!image)
- exit(1);
-
- printf("%s %d x %d\n", fname, w, h);
- grayImage = malloc(w * h * 1);
- assert(grayImage);
- for (i = 0; i < w * h; i++) {
- int g = (image[i*3+0] + image[i*3+1] + image[i*3+2]) / 3;
- assert(g < 256);
- grayImage[i] = g;
- }
-
- glTexImage2D(GL_TEXTURE_2D, 0, GL_COLOR_INDEX, w, h, 0, GL_COLOR_INDEX,
- GL_UNSIGNED_BYTE, grayImage);
-
- for (i = 0; i < 256; i++) {
- table[i][0] = channel ? i : 0;
- table[i][1] = i;
- table[i][2] = channel ? 0 : i;
- table[i][3] = 255;
- }
-
- glColorTableEXT(GL_TEXTURE_2D, /* target */
- GL_RGBA, /* internal format */
- 256, /* table size */
- GL_RGBA, /* table format */
- GL_UNSIGNED_BYTE, /* table type */
- table); /* the color table */
-
- free(grayImage);
- free(image);
-}
-
-
-
-static void Init( int argc, char *argv[] )
-{
- GLuint texObj[2];
- GLint units;
-
- if (!glutExtensionSupported("GL_ARB_multitexture")) {
- printf("Sorry, GL_ARB_multitexture not supported by this renderer.\n");
- exit(1);
- }
- if (!glutExtensionSupported("GL_EXT_paletted_texture")) {
- printf("Sorry, GL_EXT_paletted_texture not supported by this renderer.\n");
- exit(1);
- }
-
- glGetIntegerv(GL_MAX_TEXTURE_UNITS_ARB, &units);
- printf("%d texture units supported\n", units);
-
- /* allocate two texture objects */
- glGenTextures(2, texObj);
-
- /* setup texture obj 0 */
- glBindTexture(GL_TEXTURE_2D, texObj[0]);
-#ifdef LINEAR_FILTER
- /* linear filtering looks much nicer but is much slower for Mesa */
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
-foo
-#else
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
-#endif
-
- glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
-
- glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
-
- load_tex(TEXTURE_1_FILE, 0);
-#if 0
- if (!LoadRGBMipmaps(TEXTURE_1_FILE, GL_RGB)) {
- printf("Error: couldn't load texture image\n");
- exit(1);
- }
-#endif
-
- /* setup texture obj 1 */
- glBindTexture(GL_TEXTURE_2D, texObj[1]);
-#ifdef LINEAR_FILTER
- /* linear filtering looks much nicer but is much slower for Mesa */
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
-foo
-#else
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
-#endif
-
- glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
-
- load_tex(TEXTURE_2_FILE, 1);
-#if 0
- if (!LoadRGBMipmaps(TEXTURE_2_FILE, GL_RGB)) {
- printf("Error: couldn't load texture image\n");
- exit(1);
- }
-#endif
-
- /* now bind the texture objects to the respective texture units */
-#ifdef GL_ARB_multitexture
- glActiveTextureARB(GL_TEXTURE0_ARB);
- glBindTexture(GL_TEXTURE_2D, texObj[0]);
- glActiveTextureARB(GL_TEXTURE1_ARB);
- glBindTexture(GL_TEXTURE_2D, texObj[1]);
-#endif
-
- glShadeModel(GL_FLAT);
- glClearColor(0.3, 0.3, 0.4, 1.0);
-
- ModeMenu(TEXBOTH);
-
- if (argc > 1 && strcmp(argv[1], "-info")==0) {
- 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));
- }
-}
-
-
-int main( int argc, char *argv[] )
-{
- glutInit( &argc, argv );
- glutInitWindowSize( 300, 300 );
- glutInitWindowPosition( 0, 0 );
- glutInitDisplayMode( GLUT_RGB | GLUT_DOUBLE );
- glutCreateWindow(argv[0] );
- glewInit();
-
- Init( argc, argv );
-
- glutReshapeFunc( Reshape );
- glutKeyboardFunc( Key );
- glutSpecialFunc( SpecialKey );
- glutDisplayFunc( Display );
- glutIdleFunc( Idle );
-
- glutCreateMenu(ModeMenu);
- glutAddMenuEntry("Texture 0", TEX0);
- glutAddMenuEntry("Texture 1", TEX1);
- glutAddMenuEntry("Multi-texture", TEXBOTH);
- glutAddMenuEntry("Toggle Animation", ANIMATE);
- glutAddMenuEntry("Quit", QUIT);
- glutAttachMenu(GLUT_RIGHT_BUTTON);
-
- glutMainLoop();
- return 0;
-}
projects / mesa.git / blobdiff