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comparison test/testgl.c @ 933:4272450dd8d0

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Added an option to show the logo at the cursor position for debugging
author Sam Lantinga <slouken@libsdl.org>
date Fri, 20 Aug 2004 22:33:11 +0000
parents 4ab6d1fd028f
children 670e74bf5cc8
comparison
equal deleted inserted replaced
932:66761191fc11 933:4272450dd8d0
21 21
22 static SDL_bool USE_DEPRECATED_OPENGLBLIT = SDL_FALSE; 22 static SDL_bool USE_DEPRECATED_OPENGLBLIT = SDL_FALSE;
23 23
24 static SDL_Surface *global_image = NULL; 24 static SDL_Surface *global_image = NULL;
25 static GLuint global_texture = 0; 25 static GLuint global_texture = 0;
26 static GLuint cursor_texture = 0;
26 27
27 /**********************************************************************/ 28 /**********************************************************************/
28 29
29 void HotKey_ToggleFullScreen(void) 30 void HotKey_ToggleFullScreen(void)
30 { 31 {
235 SDL_FreeSurface(image); /* No longer needed */ 236 SDL_FreeSurface(image); /* No longer needed */
236 237
237 return texture; 238 return texture;
238 } 239 }
239 240
241 void DrawLogoCursor(void)
242 {
243 static GLfloat texMinX, texMinY;
244 static GLfloat texMaxX, texMaxY;
245 static int w, h;
246 int x, y;
247
248 SDL_Surface *screen = SDL_GetVideoSurface();
249
250 if ( ! cursor_texture ) {
251 SDL_Surface *image;
252 GLfloat texcoord[4];
253
254 /* Load the image (could use SDL_image library here) */
255 image = SDL_LoadBMP(LOGO_FILE);
256 if ( image == NULL ) {
257 return;
258 }
259 w = image->w;
260 h = image->h;
261
262 /* Convert the image into an OpenGL texture */
263 cursor_texture = SDL_GL_LoadTexture(image, texcoord);
264
265 /* Make texture coordinates easy to understand */
266 texMinX = texcoord[0];
267 texMinY = texcoord[1];
268 texMaxX = texcoord[2];
269 texMaxY = texcoord[3];
270
271 /* We don't need the original image anymore */
272 SDL_FreeSurface(image);
273
274 /* Make sure that the texture conversion is okay */
275 if ( ! cursor_texture ) {
276 return;
277 }
278 }
279
280 /* Move the image around */
281 SDL_GetMouseState(&x, &y);
282 x -= w/2;
283 y -= h/2;
284
285 /* Show the image on the screen */
286 SDL_GL_Enter2DMode();
287 glBindTexture(GL_TEXTURE_2D, cursor_texture);
288 glBegin(GL_TRIANGLE_STRIP);
289 glTexCoord2f(texMinX, texMinY); glVertex2i(x, y );
290 glTexCoord2f(texMaxX, texMinY); glVertex2i(x+w, y );
291 glTexCoord2f(texMinX, texMaxY); glVertex2i(x, y+h);
292 glTexCoord2f(texMaxX, texMaxY); glVertex2i(x+w, y+h);
293 glEnd();
294 SDL_GL_Leave2DMode();
295 }
240 296
241 void DrawLogoTexture(void) 297 void DrawLogoTexture(void)
242 { 298 {
243 static GLfloat texMinX, texMinY; 299 static GLfloat texMinX, texMinY;
244 static GLfloat texMaxX, texMaxY; 300 static GLfloat texMaxX, texMaxY;
391 /* Show the image on the screen */ 447 /* Show the image on the screen */
392 SDL_UpdateRects(screen, 1, &dst); 448 SDL_UpdateRects(screen, 1, &dst);
393 } 449 }
394 450
395 int RunGLTest( int argc, char* argv[], 451 int RunGLTest( int argc, char* argv[],
396 int logo, int slowly, int bpp, float gamma, int noframe, int fsaa ) 452 int logo, int logocursor, int slowly, int bpp, float gamma, int noframe, int fsaa )
397 { 453 {
398 int i; 454 int i;
399 int rgb_size[3]; 455 int rgb_size[3];
400 int w = 640; 456 int w = 640;
401 int h = 480; 457 int h = 480;
650 DrawLogoBlit(); 706 DrawLogoBlit();
651 } else { 707 } else {
652 DrawLogoTexture(); 708 DrawLogoTexture();
653 } 709 }
654 } 710 }
711 if ( logocursor ) {
712 DrawLogoCursor();
713 }
655 714
656 SDL_GL_SwapBuffers( ); 715 SDL_GL_SwapBuffers( );
657 716
658 /* Check for error conditions. */ 717 /* Check for error conditions. */
659 gl_error = glGetError( ); 718 gl_error = glGetError( );
694 } 753 }
695 if ( global_texture ) { 754 if ( global_texture ) {
696 glDeleteTextures( 1, &global_texture ); 755 glDeleteTextures( 1, &global_texture );
697 global_texture = 0; 756 global_texture = 0;
698 } 757 }
758 if ( cursor_texture ) {
759 glDeleteTextures( 1, &cursor_texture );
760 cursor_texture = 0;
761 }
699 762
700 /* Destroy our GL context, etc. */ 763 /* Destroy our GL context, etc. */
701 SDL_Quit( ); 764 SDL_Quit( );
702 return(0); 765 return(0);
703 } 766 }
704 767
705 int main(int argc, char *argv[]) 768 int main(int argc, char *argv[])
706 { 769 {
707 int i, logo; 770 int i, logo, logocursor;
708 int numtests; 771 int numtests;
709 int bpp = 0; 772 int bpp = 0;
710 int slowly; 773 int slowly;
711 float gamma = 0.0; 774 float gamma = 0.0;
712 int noframe = 0; 775 int noframe = 0;
725 } 788 }
726 if ( strcmp(argv[i], "-logoblit") == 0 ) { 789 if ( strcmp(argv[i], "-logoblit") == 0 ) {
727 logo = 1; 790 logo = 1;
728 USE_DEPRECATED_OPENGLBLIT = SDL_TRUE; 791 USE_DEPRECATED_OPENGLBLIT = SDL_TRUE;
729 } 792 }
793 if ( strcmp(argv[i], "-logocursor") == 0 ) {
794 logocursor = 1;
795 }
730 if ( strcmp(argv[i], "-slow") == 0 ) { 796 if ( strcmp(argv[i], "-slow") == 0 ) {
731 slowly = 1; 797 slowly = 1;
732 } 798 }
733 if ( strcmp(argv[i], "-bpp") == 0 ) { 799 if ( strcmp(argv[i], "-bpp") == 0 ) {
734 bpp = atoi(argv[++i]); 800 bpp = atoi(argv[++i]);
742 if ( strcmp(argv[i], "-fsaa") == 0 ) { 808 if ( strcmp(argv[i], "-fsaa") == 0 ) {
743 ++fsaa; 809 ++fsaa;
744 } 810 }
745 if ( strncmp(argv[i], "-h", 2) == 0 ) { 811 if ( strncmp(argv[i], "-h", 2) == 0 ) {
746 printf( 812 printf(
747 "Usage: %s [-twice] [-logo] [-slow] [-bpp n] [-gamma n] [-noframe] [-fsaa] [-fullscreen]\n", 813 "Usage: %s [-twice] [-logo] [-logocursor] [-slow] [-bpp n] [-gamma n] [-noframe] [-fsaa] [-fullscreen]\n",
748 argv[0]); 814 argv[0]);
749 exit(0); 815 exit(0);
750 } 816 }
751 } 817 }
752 for ( i=0; i<numtests; ++i ) { 818 for ( i=0; i<numtests; ++i ) {
753 RunGLTest(argc, argv, logo, slowly, bpp, gamma, noframe, fsaa); 819 RunGLTest(argc, argv, logo, logocursor, slowly, bpp, gamma, noframe, fsaa);
754 } 820 }
755 return 0; 821 return 0;
756 } 822 }
757 823
758 #else /* HAVE_OPENGL */ 824 #else /* HAVE_OPENGL */