From 976c26ca34f2ae8cc6f8b9f9b091efeba1311a94 Mon Sep 17 00:00:00 2001
From: Brian Paul <brian.paul@tungstengraphics.com>
Date: Mon, 20 Aug 2001 16:07:10 +0000
Subject: WindML driver (Stephane Raimbault)

---
 progs/windml/ugldrawpix.c | 429 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 429 insertions(+)
 create mode 100644 progs/windml/ugldrawpix.c

(limited to 'progs/windml/ugldrawpix.c')

diff --git a/progs/windml/ugldrawpix.c b/progs/windml/ugldrawpix.c
new file mode 100644
index 0000000000..678f423d2e
--- /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;
+    }
-- 
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