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Diffstat (limited to 'progs/windml/ugldrawpix.c')
| -rw-r--r-- | progs/windml/ugldrawpix.c | 429 |
1 files changed, 429 insertions, 0 deletions
diff --git a/progs/windml/ugldrawpix.c b/progs/windml/ugldrawpix.c new file mode 100644 index 00000000000..678f423d2e3 --- /dev/null +++ b/progs/windml/ugldrawpix.c @@ -0,0 +1,429 @@ +/* + * glDrawPixels demo/test/benchmark + * + * Brian Paul September 25, 1997 This file is in the public domain. + * + * Conversion to UGL/Mesa by Stephane Raimbault july, 2001 + */ + +/* + * $Log: ugldrawpix.c,v $ + * Revision 1.1 2001/08/20 16:07:11 brianp + * WindML driver (Stephane Raimbault) + * + * Revision 1.5 2000/12/24 22:53:54 pesco + * * demos/Makefile.am (INCLUDES): Added -I$(top_srcdir)/util. + * * demos/Makefile.X11, demos/Makefile.BeOS-R4, demos/Makefile.cygnus: + * Essentially the same. + * Program files updated to include "readtex.c", not "../util/readtex.c". + * * demos/reflect.c: Likewise for "showbuffer.c". + * + * + * * Makefile.am (EXTRA_DIST): Added top-level regular files. + * + * * include/GL/Makefile.am (INC_X11): Added glxext.h. + * + * + * * src/GGI/include/ggi/mesa/Makefile.am (EXTRA_HEADERS): Include + * Mesa GGI headers in dist even if HAVE_GGI is not given. + * + * * configure.in: Look for GLUT and demo source dirs in $srcdir. + * + * * src/swrast/Makefile.am (libMesaSwrast_la_SOURCES): Set to *.[ch]. + * More source list updates in various Makefile.am's. + * + * * Makefile.am (dist-hook): Remove CVS directory from distribution. + * (DIST_SUBDIRS): List all possible subdirs here. + * (SUBDIRS): Only list subdirs selected for build again. + * The above two applied to all subdir Makefile.am's also. + * + * Revision 1.4 2000/09/08 21:45:21 brianp + * added dither key option + * + * Revision 1.3 1999/10/28 18:23:29 brianp + * minor changes to Usage() function + * + * Revision 1.2 1999/10/21 22:13:58 brianp + * added f key to toggle front/back drawing + * + * Revision 1.1.1.1 1999/08/19 00:55:40 jtg + * Imported sources + * + * Revision 3.3 1999/03/28 18:18:33 brianp + * minor clean-up + * + * Revision 3.2 1998/11/05 04:34:04 brianp + * moved image files to ../images/ directory + * + * Revision 3.1 1998/02/22 16:43:17 brianp + * added a few casts to silence compiler warnings + * + * Revision 3.0 1998/02/14 18:42:29 brianp + * initial rev + * + */ + + +#include <stdio.h> +#include <stdlib.h> +#include <math.h> +#include <tickLib.h> + +#include <ugl/ugl.h> +#include <ugl/uglucode.h> +#include <ugl/uglevent.h> +#include <ugl/uglinput.h> + +#include <GL/uglmesa.h> +#include <GL/glu.h> + +#include "../util/readtex.h" + +#define IMAGE_FILE "Mesa/images/girl.rgb" + +UGL_LOCAL UGL_EVENT_SERVICE_ID eventServiceId; +UGL_LOCAL UGL_EVENT_Q_ID qId; +UGL_LOCAL volatile UGL_BOOL stopWex; +UGL_LOCAL UGL_MESA_CONTEXT umc; + +UGL_LOCAL int ImgWidth, ImgHeight; +UGL_LOCAL GLenum ImgFormat; +UGL_LOCAL GLubyte *Image; + +UGL_LOCAL int Xpos, Ypos; +UGL_LOCAL int SkipPixels, SkipRows; +UGL_LOCAL int DrawWidth, DrawHeight; +UGL_LOCAL float Xzoom, Yzoom; +UGL_LOCAL GLboolean Scissor; +UGL_LOCAL GLboolean DrawFront; +UGL_LOCAL GLboolean Dither; + +UGL_LOCAL void cleanUp (void); + +UGL_LOCAL void reset(void) + { + Xpos = Ypos = 20; + DrawWidth = ImgWidth; + DrawHeight = ImgHeight; + SkipPixels = SkipRows = 0; + Scissor = GL_FALSE; + Xzoom = Yzoom = 1.0; + } + +UGL_LOCAL void initGL(GLboolean ciMode, GLsizei width, GLsizei height) + { + printf("GL_VERSION = %s\n", (char *) glGetString(GL_VERSION)); + printf("GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER)); + printf("GL_VENDOR = %s\n", (char *) glGetString(GL_VENDOR)); + + Image = LoadRGBImage(IMAGE_FILE, &ImgWidth, &ImgHeight, &ImgFormat); + if (!Image) + { + printf("Couldn't read %s\n", IMAGE_FILE); + cleanUp(); + exit(1); + } + + glScissor(width/4, height/4, width/2, height/2); + + if (ciMode) + { + /* Convert RGB image to grayscale */ + GLubyte *indexImage = malloc( ImgWidth * ImgHeight ); + GLint i; + for (i=0; i<ImgWidth*ImgHeight; i++) + { + int gray = Image[i*3] + Image[i*3+1] + Image[i*3+2]; + indexImage[i] = gray / 3; + } + free(Image); + Image = indexImage; + ImgFormat = GL_COLOR_INDEX; + + for (i=0;i<255;i++) + { + float g = i / 255.0; + uglMesaSetColor(i, g, g, g); + } + } + + printf("Loaded %d by %d image\n", ImgWidth, ImgHeight ); + + glPixelStorei(GL_UNPACK_ALIGNMENT, 1); + glPixelStorei(GL_UNPACK_ROW_LENGTH, ImgWidth); + + reset(); + + glViewport( 0, 0, width, height ); + glMatrixMode( GL_PROJECTION ); + glLoadIdentity(); + glOrtho( 0.0, width, 0.0, height, -1.0, 1.0 ); + glMatrixMode( GL_MODELVIEW ); + glLoadIdentity(); + } + +UGL_LOCAL void drawGL(void) + { + glClear(GL_COLOR_BUFFER_BIT); + + /* This allows negative raster positions: */ + glRasterPos2i(0, 0); + glBitmap(0, 0, 0, 0, Xpos, Ypos, NULL); + + glPixelStorei(GL_UNPACK_SKIP_PIXELS, SkipPixels); + glPixelStorei(GL_UNPACK_SKIP_ROWS, SkipRows); + + glPixelZoom( Xzoom, Yzoom ); + + if (Scissor) + glEnable(GL_SCISSOR_TEST); + + glDrawPixels(DrawWidth, DrawHeight, ImgFormat, GL_UNSIGNED_BYTE, Image); + + glDisable(GL_SCISSOR_TEST); + + uglMesaSwapBuffers(); + } + + +UGL_LOCAL void benchmark( void ) + { + int startTick, endTick, ticksBySec; + int draws; + double seconds, pixelsPerSecond; + + printf("Benchmarking (4 sec)...\n"); + + /* GL set-up */ + glPixelStorei(GL_UNPACK_SKIP_PIXELS, SkipPixels); + glPixelStorei(GL_UNPACK_SKIP_ROWS, SkipRows); + glPixelZoom( Xzoom, Yzoom ); + if (Scissor) + glEnable(GL_SCISSOR_TEST); + + if (DrawFront) + glDrawBuffer(GL_FRONT); + else + glDrawBuffer(GL_BACK); + + /* Run timing test */ + draws = 0; + + ticksBySec = sysClkRateGet (); + startTick = tickGet(); + + do { + glDrawPixels(DrawWidth, DrawHeight, ImgFormat, GL_UNSIGNED_BYTE, Image); + draws++; + endTick = tickGet (); + } while ((endTick - startTick)/ticksBySec < 4); /* 4 seconds */ + + /* GL clean-up */ + glDisable(GL_SCISSOR_TEST); + + /* Results */ + seconds = (endTick - startTick)/ticksBySec; + pixelsPerSecond = draws * DrawWidth * DrawHeight / seconds; + printf("Result: %d draws in %f seconds = %f pixels/sec\n", + draws, seconds, pixelsPerSecond); + } + +UGL_LOCAL void echoUse(void) + { + printf("Keys:\n"); + printf(" SPACE Reset Parameters\n"); + printf(" Up/Down Move image up/down\n"); + printf(" Left/Right Move image left/right\n"); + printf(" x Decrease X-axis PixelZoom\n"); + printf(" X Increase X-axis PixelZoom\n"); + printf(" y Decrease Y-axis PixelZoom\n"); + printf(" Y Increase Y-axis PixelZoom\n"); + printf(" w Decrease glDrawPixels width*\n"); + printf(" W Increase glDrawPixels width*\n"); + printf(" h Decrease glDrawPixels height*\n"); + printf(" H Increase glDrawPixels height*\n"); + printf(" p Decrease GL_UNPACK_SKIP_PIXELS*\n"); + printf(" P Increase GL_UNPACK_SKIP_PIXELS*\n"); + printf(" r Decrease GL_UNPACK_SKIP_ROWS*\n"); + printf(" R Increase GL_UNPACK_SKIP_ROWS*\n"); + printf(" s Toggle GL_SCISSOR_TEST\n"); + printf(" f Toggle front/back buffer drawing\n"); + printf(" d Toggle dithering\n"); + printf(" b Benchmark test\n"); + printf(" ESC Exit\n"); + printf("* Warning: no limits are imposed on these parameters so it's\n"); + printf(" possible to cause a segfault if you go too far.\n"); + } + + +UGL_LOCAL void readKey(UGL_WCHAR key) + { + switch (key) + { + case UGL_UNI_SPACE: + reset(); + break; + case 'd': + Dither = !Dither; + if (Dither) + glEnable(GL_DITHER); + else + glDisable(GL_DITHER); + break; + case 'w': + if (DrawWidth > 0) + DrawWidth--; + break; + case 'W': + DrawWidth++; + break; + case 'h': + if (DrawHeight > 0) + DrawHeight--; + break; + case 'H': + DrawHeight++; + break; + case 'p': + if (SkipPixels > 0) + SkipPixels--; + break; + case 'P': + SkipPixels++; + break; + case 'r': + if (SkipRows > 0) + SkipRows--; + break; + case 'R': + SkipRows++; + break; + case 's': + Scissor = !Scissor; + break; + case 'x': + Xzoom -= 0.1; + break; + case 'X': + Xzoom += 0.1; + break; + case 'y': + Yzoom -= 0.1; + break; + case 'Y': + Yzoom += 0.1; + break; + case 'b': + benchmark(); + break; + case 'f': + DrawFront = !DrawFront; + if (DrawFront) + glDrawBuffer(GL_FRONT); + else + glDrawBuffer(GL_BACK); + printf("glDrawBuffer(%s)\n", DrawFront ? "GL_FRONT" : "GL_BACK"); + break; + case UGL_UNI_UP_ARROW: + Ypos += 1; + break; + case UGL_UNI_DOWN_ARROW: + Ypos -= 1; + break; + case UGL_UNI_LEFT_ARROW: + Xpos -= 1; + break; + case UGL_UNI_RIGHT_ARROW: + Xpos += 1; + break; + case UGL_UNI_ESCAPE: + stopWex = UGL_TRUE; + break; + } + } + +UGL_LOCAL void loopEvent(void) + { + UGL_EVENT event; + UGL_INPUT_EVENT * pInputEvent; + + UGL_FOREVER + { + if (uglEventGet (qId, &event, sizeof (event), UGL_NO_WAIT) + != UGL_STATUS_Q_EMPTY) + { + pInputEvent = (UGL_INPUT_EVENT *)&event; + + if (pInputEvent->header.type == UGL_EVENT_TYPE_KEYBOARD && + pInputEvent->modifiers & UGL_KEYBOARD_KEYDOWN) + readKey(pInputEvent->type.keyboard.key); + } + + drawGL(); + if (stopWex) + break; + } + } + +UGL_LOCAL void cleanUp (void) + { + uglEventQDestroy (eventServiceId, qId); + + uglMesaDestroyContext(); + uglDeinitialize (); + } + +void windMLDrawPix (void); + +void ugldrawpix (void) + { + taskSpawn ("tDrawPix", 210, VX_FP_TASK, 100000, (FUNCPTR)windMLDrawPix, + 0,1,2,3,4,5,6,7,8,9); + } + +void windMLDrawPix (void) + { + UGL_INPUT_DEVICE_ID keyboardDevId; + GLuint ciMode; + GLsizei width, height; + + Image = NULL; + Scissor = GL_FALSE; + DrawFront = GL_FALSE; + Dither = GL_TRUE; + + uglInitialize (); + + uglDriverFind (UGL_KEYBOARD_TYPE, 0, + (UGL_UINT32 *)&keyboardDevId); + + uglDriverFind (UGL_EVENT_SERVICE_TYPE, 0, (UGL_UINT32 *)&eventServiceId); + + qId = uglEventQCreate (eventServiceId, 100); + + /* Double buffering */ + umc = uglMesaCreateNewContext (UGL_MESA_DOUBLE, NULL); + if (umc == NULL) + { + uglDeinitialize (); + return; + } + + uglMesaMakeCurrentContext(umc, 0, 0, UGL_MESA_FULLSCREEN_WIDTH, + UGL_MESA_FULLSCREEN_HEIGHT); + + uglMesaGetIntegerv(UGL_MESA_COLOR_INDEXED, &ciMode); + uglMesaGetIntegerv(UGL_MESA_WIDTH, &width); + uglMesaGetIntegerv(UGL_MESA_HEIGHT, &height); + + initGL(ciMode, width, height); + + echoUse(); + + stopWex = UGL_FALSE; + loopEvent(); + + cleanUp(); + + return; + } |