* DisplayScreen in GL (uses DrawPixels)

* If LastTexture is same, don't do a new glBegin (for Walls)

macsrc/Burger.c

@@ -22,25 +22,8 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 #include <stdlib.h>
 #include <string.h>
 
-unsigned char *VideoPointer;
-Word VideoWidth;
-LongWord YTable[480]; 
-
 #define BRGR 0x42524752
 
-void InitYTable(void)
-{
-	Word i;
-	LongWord Offset;
-
-	i = 0;
-	Offset = 0;
-	do {
-		YTable[i] = Offset;
-		Offset+=VideoWidth;
-	} while (++i<480);
-}
-
 /**********************************
 
 	Load and set a palette resource

macsrc/GLDraw.c

@@ -45,6 +45,47 @@ Byte Pal[768];
 Utility Functions
 */
 
+GLuint LastTexture;
+
+static void StartTexture()
+{
+	LastTexture = -1;
+}
+
+static void ChangeTexture(GLuint x)
+{ 
+	if (x == 0)
+		fprintf(stderr, "%s/%d: Binding zero texture!\n", __FILE__, __LINE__);
+	
+	if (LastTexture != x) {
+		if (LastTexture != -1) 
+			glEnd();
+		glBindTexture(GL_TEXTURE_2D, x);
+		glBegin(GL_QUADS);
+		LastTexture = x;
+		return;
+	}
+}
+
+static void StopTexture()
+{
+	if (LastTexture != -1) 
+		glEnd();
+	LastTexture = -1;
+}
+
+static void ChangeTextureSimple(GLuint x)
+{ 
+	if (x == 0)
+		fprintf(stderr, "%s/%d: Binding zero texture!\n", __FILE__, __LINE__);
+	
+	if (LastTexture != x) {
+		glBindTexture(GL_TEXTURE_2D, x);
+		LastTexture = x;
+		return;
+	}
+}		
+
 void xgluPerspective(GLdouble fovx, GLdouble aspect, GLdouble zNear, GLdouble zFar)
 {
 	GLdouble xmin, xmax, ymin, ymax;
@@ -79,10 +120,6 @@ int CheckToken(const char *str, const char *item)
 Temp Stuff
 */
 
-void DisplayScreen(Word res)
-{
-}
-
 void FadeToPtr(unsigned char *PalPtr)
 {
 	SetPalette(PalPtr);
@@ -136,10 +173,64 @@ Byte *Pal256toRGB(Byte *dat, int len, Byte *pal)
 	return buf;
 }
 
+typedef struct
+{
+	GLuint t;
+	GLfloat w;
+	GLfloat h;
+} Texture;
+
+void RedrawScreen()
+{
+	BlastScreen();
+}
+
 void DrawShape(Word x, Word y, void *ShapePtr)
 {
 }
 
+void DrawPsyched(Word Index)
+{
+}
+
+void DisplayScreen(Word res, Word pres)
+{
+	LongWord *PackPtr;
+	LongWord PackLength;
+	unsigned short *ShapePtr;
+	int width, height;
+	Byte *buf, *pal;
+	
+	glMatrixMode(GL_PROJECTION);
+	glLoadIdentity();
+	glMatrixMode(GL_MODELVIEW);
+	glLoadIdentity();
+	
+	PackPtr = LoadAResource(res);
+	PackLength = lMSB(PackPtr[0]);
+	ShapePtr = (unsigned short *)AllocSomeMem(PackLength);
+	DLZSS((Byte *)ShapePtr, (Byte *)&PackPtr[1], PackLength);
+	
+	pal = LoadAResource(pres);
+	
+	glPixelZoom(1.0f, -1.0f);
+	glRasterPos2f(-1.0f, 1.0f);
+	
+	width = sMSB(ShapePtr[0]);
+	height = sMSB(ShapePtr[1]);
+	
+	buf = Pal256toRGB((Byte *)&ShapePtr[2], width * height, pal);
+        glDrawPixels(width, height, GL_RGB, GL_UNSIGNED_BYTE, buf);        
+
+        free(buf);
+        FreeSomeMem(ShapePtr);
+        
+        ReleaseAResource(pres);
+        ReleaseAResource(res);
+        
+        glFinish();
+}
+
 void SetNumber(LongWord number, Word x, Word y, Word digits)
 {
 }
@@ -205,7 +296,6 @@ void IO_DisplayViewBuffer(void)
 	}
 }
 
-GLuint LastTexture;
 
 /*
 Automap Drawing
@@ -223,8 +313,6 @@ void MakeSmallFont()
 	
 	pal = LoadAResource(rGamePal);
 		
-	LastTexture = 0;
-	
 	for (i = 0; i < 64; i++) {
 		ArtStart = ArtData[i];
 		
@@ -325,7 +413,6 @@ void DrawSmall(Word x, Word y, Word tile)
 	glPushMatrix();
 	glLoadIdentity();
 	
-	LastTexture = smltex[tile];
 	glBindTexture(GL_TEXTURE_2D, smltex[tile]);
 	
 	glBegin(GL_QUADS);
@@ -484,8 +571,11 @@ Byte *DeXMShape256(Byte *data)
 
 void IO_ClearViewBuffer()
 {
-	LastTexture = 0;
+	StartTexture();
+	
 	glBindTexture(GL_TEXTURE_2D, 0);
+/* **MESA BUG** */
+glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
 
 	glViewport(0, VidHeight - ViewHeight, VidWidth, ViewHeight);
 
@@ -496,40 +586,27 @@ void IO_ClearViewBuffer()
 	glPushMatrix();
 	glLoadIdentity();
 
-#if 0	
-	/* glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); */
-	glClear(GL_DEPTH_BUFFER_BIT);
-	
-	glDisable(GL_DEPTH_TEST);
-	
-	glColor3ub(Pal[0x2F*3+0], Pal[0x2F*3+1], Pal[0x2F*3+2]);
-	glRectf(-1, 0, 1, 1);
-	
-	glColor3ub(Pal[0x2A*3+0], Pal[0x2A*3+1], Pal[0x2A*3+2]);
-	glRectf(1, -1, -1, 0);
-		
-	glEnable(GL_DEPTH_TEST);
-#else	
 	glEnable(GL_DEPTH_TEST);
 	
 	glDepthRange(1.0, 1.0);
 	glDepthFunc(GL_ALWAYS);
 	
 	glColor3ub(Pal[0x2F*3+0], Pal[0x2F*3+1], Pal[0x2F*3+2]);
-	glRectf(-1, 0, 1, 1);
+	glRectf(-1.0, 0.0, 1.0, 1.0);
 	
 	glColor3ub(Pal[0x2A*3+0], Pal[0x2A*3+1], Pal[0x2A*3+2]);
-	glRectf(1, -1, -1, 0);
+	glRectf(1.0, -1.0, -1.0, 0.0);
 			
 	glDepthRange(0.0, 1.0);
 	glDepthFunc(GL_LESS);
-#endif
+
 	glPopMatrix();	
 	
 	glMatrixMode(GL_MODELVIEW);
 	
 	/* Not needed when using GL_REPLACE */
 	/* glColor3f(1.0, 1.0, 1.0);  */
+glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);	
 
 	glRotatef(270.0-((GLfloat)gamestate.viewangle / (GLfloat)ANGLES * 360.0), 0.0, 1.0, 0.0);
 	glTranslatef((GLfloat)actors[0].x / 256.0, 0, (GLfloat)actors[0].y / 256.0);
@@ -544,9 +621,9 @@ void InitRenderView()
 	Byte *buf, *pal;
 	int i;
 	
+	glClearColor(0.0, 0.0, 0.0, 0.0);
 	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 	
-	LastTexture = 0;
 	glEnable(GL_TEXTURE_2D);	
 
 #ifdef GL_EXT_shared_texture_palette
@@ -695,8 +772,6 @@ void InitRenderView()
 	glEnable(GL_ALPHA_TEST);
 	glAlphaFunc(GL_GREATER, 0.5);
 	
-	glClearColor(0.0, 0.0, 0.0, 0.0);
-	
 	glMatrixMode(GL_PROJECTION);
 	glLoadIdentity();
 	
@@ -711,7 +786,6 @@ void InitRenderView()
 
 void IO_AttackShape(Word shape)
 {
-	LastTexture = weptex[shape];
 	if (weptex[shape] == 0) {
 		fprintf(stderr, "Weapon shape %d is zero texture!\n", shape);
 	}
@@ -748,14 +822,7 @@ void DrawSprite(thing_t *t)
 	glTranslatef(-(GLfloat)t->x / 256.0, 0, -(GLfloat)t->y / 256.0);
 	glRotatef(90.0+((GLfloat)gamestate.viewangle / (GLfloat)ANGLES * 360.0), 0.0, 1.0, 0.0);
 	
-	if (sprtex[t->sprite] == 0) {
-		fprintf(stderr, "ERROR: 0 texture in DrawSprite (%d)\n", t->sprite);
-	}
-
-	if (LastTexture != sprtex[t->sprite]) {
-		LastTexture = sprtex[t->sprite];
-		glBindTexture(GL_TEXTURE_2D, sprtex[t->sprite]);
-	}
+	ChangeTextureSimple(sprtex[t->sprite]);
 	
 	glBegin(GL_QUADS);
 	glTexCoord2f(1.0, 0.0); glVertex2f( 0.5,  1); 
@@ -994,6 +1061,8 @@ void DrawSprites(void)
 	missile_t *MissilePtr;	/* Pointer to active missile record */
 	Word *xe;				/* Pointer to sort value */
 
+	StopTexture();			/* Draw Walls */
+	
 	numvisspr = 0;			/* Init the sprite count */
 	
 /* add all sprites in visareas*/
@@ -1039,7 +1108,6 @@ void DrawSprites(void)
 		SortEvents();
 
 /* draw from smallest scale to largest */
-
 		xe = &firstevent[i-1];
 		do {
 			dseg = &vissprites[xe[0]&(MAXVISSPRITES-1)];
@@ -1300,15 +1368,8 @@ void P_DrawSegx(saveseg_t *seg)
 	smin = -(pos + texslide); 
 	smax = -(pos + (max - min));
 	
-	if (waltex[t] == 0)
-		fprintf(stderr, "ERROR: 0 texture in P_DrawSegx!\n");	
+	ChangeTexture(waltex[t]);
 	
-	if (LastTexture != waltex[t]) {
-		LastTexture = waltex[t];
-		glBindTexture(GL_TEXTURE_2D, waltex[t]);
-	}
-	
-	glBegin(GL_QUADS);
 	switch(seg->dir&3) {
 	case di_north:
 		if (door != -1) {
@@ -1359,6 +1420,5 @@ void P_DrawSegx(saveseg_t *seg)
 		}
 		break;
 	}
-	glEnd();
 	}
 }

macsrc/InterMis.c

@@ -243,7 +243,8 @@ void LevelCompleted(void)
 	NumberIndex = 47;		/* Hack to draw score using an alternate number set */
 	NewGameWindow(1);		/* Force 512 mode screen */
 	
-	DisplayScreen(rIntermission);
+	DisplayScreen(rIntermission, rInterPal);
+	BlastScreen();
 	
 	PackPtr = LoadAResource(rInterPics);
 	PackLength = lMSB(PackPtr[0]);

macsrc/Intro.c

@@ -32,19 +32,23 @@ void Intro(void)
 
 	FadeToBlack();		/* Fade out the video */
 	
-	DisplayScreen(rMacPlayPic);
+	DisplayScreen(rMacPlayPic, rMacPlayPal);
 	BlastScreen();
 
 	StartSong(SongListPtr[0]);	/* Play the song */
 	
 	FadeTo(rMacPlayPal);		/* Fade in the picture */
 	WaitTicksEvent(240);		/* Wait for event */
+	
+	DisplayScreen(rMacPlayPic, rIdLogoPal); /* higher bpp hack */
+	BlastScreen();
+	
 	FadeTo(rIdLogoPal);
 
 	if (toupper(WaitTicksEvent(240))=='B') { /* Wait for event */
 		FadeToBlack();
 		ClearTheScreen(BLACK);
-		DisplayScreen(rYummyPic);
+		DisplayScreen(rYummyPic, rYummyPal);
 		BlastScreen();
 		FadeTo(rYummyPal);
 		

macsrc/Main.c

@@ -137,7 +137,7 @@ Boolean TitleScreen()
 	NewGameWindow(1);	/* Set to 512 mode */
 	FadeToBlack();		/* Fade out the video */
 
-	DisplayScreen(rTitlePic);
+	DisplayScreen(rTitlePic, rTitlePal);
 	BlastScreen();
 
 	StartSong(SongListPtr[0]);

macsrc/SoftDraw.c

@@ -10,7 +10,7 @@ This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  
 
-See the GNU General Public License for more details.
+ See the GNU General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program; if not, write to the Free Software
@@ -19,12 +19,31 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 
 #include "wolfdef.h"
 
-void DisplayScreen(Word res)
+unsigned char *VideoPointer;
+Word VideoWidth;
+LongWord YTable[480];
+
+void InitYTable(void)
+{
+	Word i;
+	LongWord Offset;
+
+	i = 0;
+	Offset = 0;
+	do {
+		YTable[i] = Offset;
+		Offset+=VideoWidth;
+	} while (++i<480);
+}
+
+void DisplayScreen(Word res, Word pal)
 {
 	LongWord *PackPtr;
 	LongWord PackLength;	
 	unsigned short *ShapePtr;
 	
+	/* pal is ignored in 8bit */
+	
 	PackPtr = LoadAResource(res);
 	PackLength = lMSB(PackPtr[0]);
 	ShapePtr = (unsigned short *)AllocSomeMem(PackLength);
@@ -35,6 +54,15 @@ void DisplayScreen(Word res)
 	ReleaseAResource(res);
 }
 
+void RedrawScreen()
+{
+	BlastScreen();
+}
+
+void DrawPsyched(Word Index)
+{
+}
+
 /**********************************
 
 	Load and set a palette from a pointer

macsrc/TODO

@@ -13,16 +13,16 @@ TODO:
 * Finish moving all 2D code to SoftDraw.c
   - Should move some code so it is not such a large file (SoftDraw2.c)
 * Finish OpenGL
-  + Status bars, Introscreens, Psyched [DrawShape]
-    + Not exactly sure how I will implement this yet.
+  + Status bars, Level completed screen, Psyched [DrawShape]
     - IO_Draw* (status bar versions) are stubbed, update statusbar when
       doing screen update
   - Finish window resizing
-  - Could use the LastTexture to have less glBegin/Ends.
   - When all drawing is implemented, remove any unnecessary state/matrix
     changes.
   - Split up GLDraw.c
   - Is GL_REPLACE faster than GL_MODULATE for textures?
+  - Save "draw state" so redrawing works right when screen is
+    resized/exposed
 * Save/Load Games
   - Menu code does not exist yet -- so just have a compiled in default save
     and load files

macsrc/stub.c

@@ -107,11 +107,6 @@ void ShowGetPsyched(void)
 	SetAPalette(rGamePal);	
 }
 
-void DrawPsyched(Word Index)
-{
-	/* TODO: blah */
-}
-
 void EndGetPsyched(void)
 {
 	while (PsyTime > ReadTick()) ;

macsrc/vi_glx.c

@@ -40,6 +40,8 @@ XVisualInfo *vi;
 GLXContext ctx;
 Atom wmDeleteWindow;
 
+int VidWidth, VidHeight, ViewHeight;
+
 #ifdef GL_EXT_shared_texture_palette
 extern int UseSharedTexturePalette;
 extern PFNGLCOLORTABLEEXTPROC pglColorTableEXT;
@@ -47,6 +49,8 @@ extern PFNGLCOLORTABLEEXTPROC pglColorTableEXT;
 
 extern int CheckToken(const char *str, const char *item);
 
+int HandleEvents();
+
 int attrib[] = {
 	GLX_RGBA,
 	GLX_RED_SIZE,		5,
@@ -189,6 +193,8 @@ int main(int argc, char *argv[])
 	}
 #endif
 	
+	glShadeModel(GL_FLAT);
+	
 	InitData();
 	
 	SlowDown = 1;
@@ -222,7 +228,6 @@ void BlastScreen2(Rect *BlastRect)
 	BlastScreen();
 }
 
-int VidWidth, VidHeight, ViewHeight;
 #define w VidWidth
 #define h VidHeight
 #define v ViewHeight
@@ -243,7 +248,7 @@ void BlastScreen()
 	}
 }
 
-Word VidXs[] = {320,512,640,640};       /* Screen sizes to play with */
+Word VidXs[] = {320,512,640,640};
 Word VidYs[] = {200,384,400,480};
 Word VidVs[] = {160,320,320,400};
 Word VidPics[] = {rFaceShapes,rFace512,rFace640,rFace640};
@@ -270,15 +275,18 @@ Word NewGameWindow(Word NewVidSize)
 	sizehints.flags = PMinSize;
 	XSetWMNormalHints(dpy, win, &sizehints);
 	XResizeWindow(dpy, win, w, h);
-	XSync(dpy, False);
 	
-	InitYTable();
 	SetAPalette(rBlackPal);
 	ClearTheScreen(BLACK);
 	BlastScreen();
 	
 	VidSize = NewVidSize;
 	
+	XSync(dpy, False);
+	glXWaitGL();
+	glXWaitX();
+	HandleEvents();
+	
 	return VidSize;
 }
 
@@ -412,6 +420,15 @@ void keyboard_handler(KeySym keycode, int press)
 	
 	UpdateKeys(keycode, press);
 	
+	if (press == 0) {
+		switch(keycode) {
+		case XK_Escape:
+			Quit(NULL); /* fast way out */
+		default:
+			break;
+		}
+	}
+	
 	if (RSJ) {		
 		if (press == 0) {
 			for (i = 0; i < CheatCount; i++) {
@@ -506,8 +523,6 @@ void keyboard_handler(KeySym keycode, int press)
 			case XK_slash:
 				joystick1 = JOYPAD_START;
 				break;		
-			case XK_Escape:
-				Quit(NULL); /* fast way out */
 			}
 		}
 		
@@ -558,7 +573,6 @@ void keyboard_handler(KeySym keycode, int press)
 			joystick1 |= (JOYPAD_X|JOYPAD_Y);
 		if (keys[SC_RIGHTSHIFT])
 			joystick1 |= (JOYPAD_X|JOYPAD_Y);
-	}
 		
 		if ((joystick1 & (JOYPAD_LFT|JOYPAD_RGT)) == (JOYPAD_LFT|JOYPAD_RGT))
 			joystick1 &= ~(JOYPAD_LFT|JOYPAD_RGT);
@@ -574,7 +588,7 @@ void keyboard_handler(KeySym keycode, int press)
 				joystick1 &= ~JOYPAD_TR;
 			}
 		}
-	
+	}
 }
 
 int HandleEvents()
@@ -595,10 +609,12 @@ int HandleEvents()
 					ret = 0;
 					break;
 				case Expose:
-					BlastScreen();
+					RedrawScreen();
 					break;
 				case ConfigureNotify:
 					glViewport(0, 0, event.xconfigure.width, event.xconfigure.height);
+					glPixelZoom(1.0f, -1.0f);
+					glRasterPos2f(-1.0f, 1.0f);
 					break;
 				case ClientMessage:
 					if (event.xclient.data.l[0] == wmDeleteWindow)

macsrc/wolfdef.h

@@ -585,7 +585,7 @@ extern Byte *ArtData[64];
 extern Byte textures[MAPSIZE*2+5][MAPSIZE]; /* 0-63 is horizontal, 64-127 is vertical*/
 
 extern void SetPalette(Byte *pal);
-extern void DisplayScreen(Word res);
+extern void DisplayScreen(Word res, Word pal);
 extern void InitRenderView();
 extern void StartRenderView();
 extern void Quit(char *str);
@@ -594,6 +594,7 @@ extern int InitResources(char *name);
 extern void InitData();
 extern int WolfMain(int argc, char *argv[]);
 extern void FreeResources();
+extern void RedrawScreen();
 
 extern void BlastScreen(void);
 extern void BlastScreen2(Rect *BlastRect);