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Diffstat (limited to 'progs/windml/ugldrawpix.c')
-rw-r--r--progs/windml/ugldrawpix.c438
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diff --git a/progs/windml/ugldrawpix.c b/progs/windml/ugldrawpix.c
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+/*
+ * 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 1.2 2001/09/10 19:21:13 brianp
+ * WindML updates (Stephane Raimbault)
+ *
+ * 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/wrs_logo.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 (UGL_BOOL windMLMode);
+
+void ugldrawpix (void)
+ {
+ taskSpawn ("tDrawPix", 210, VX_FP_TASK, 100000, (FUNCPTR)windMLDrawPix,
+ UGL_FALSE,1,2,3,4,5,6,7,8,9);
+ }
+
+void windMLDrawPix (UGL_BOOL windMLMode)
+ {
+ 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 */
+ if (windMLMode)
+ umc = uglMesaCreateNewContext(UGL_MESA_DOUBLE
+ | UGL_MESA_WINDML_EXCLUSIVE, NULL);
+ else
+ 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();
+ free(Image);
+
+ return;
+ }
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