shithub: tinygl

Download patch

ref: e2e12c60ee18888709eaccaa8fc55b7c9fb3cf45
parent: c99b80721b808a9475068a8eafde9b7c3cac679e
author: David <gek@katherine>
date: Mon Feb 15 14:16:34 EST 2021 

Perf improvement update


--- a/SDL_Examples/helloworld.c
+++ b/SDL_Examples/helloworld.c
@@ -230,7 +230,7 @@
 
         // draw scene:
         glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
-        draw2();
+        draw();
 		glDrawText((unsigned char*)"Hello World!\nFrom TinyGL", 0, 0, 0x00FFFFFF);
         // swap buffers:
         if ( SDL_MUSTLOCK(screen) && (SDL_LockSurface(screen)<0) ) {
--- a/include/zbuffer.h
+++ b/include/zbuffer.h
@@ -68,14 +68,17 @@
     unsigned short *zbuf;
     PIXEL *pbuf;
     int frame_buffer_allocated;
-    /* opengl polygon stipple*/
-    int dostipple;
-    unsigned char stipplepattern[TGL_POLYGON_STIPPLE_BYTES]; //32 bits wide, 32 bits tall. 32 * 4 bytes.
+    
      
     int nb_colors;
     unsigned char *dctable;
     int *ctable;
     PIXEL *current_texture;
+    /* opengl polygon stipple*/
+    int dostipple;
+#if TGL_FEATURE_POLYGON_STIPPLE == 1
+    unsigned char stipplepattern[TGL_POLYGON_STIPPLE_BYTES];
+#endif
 } ZBuffer;
 
 typedef struct {
--- a/src/init.c
+++ b/src/init.c
@@ -131,8 +131,10 @@
   c->current_shade_model=GL_SMOOTH;
   c->cull_face_enabled=0;
   c->zb->dostipple = 0;
+#if TGL_FEATURE_POLYGON_STIPPLE == 1
   for(GLint i = 0; i < 128; i++)
   	c->zb->stipplepattern[i] = 0xFF;
+#endif
   /* clear */
   c->clear_color.v[0]=0;
   c->clear_color.v[1]=0;
--- a/src/zbuffer.c
+++ b/src/zbuffer.c
@@ -138,15 +138,9 @@
     GLubyte *p1;
     PIXEL *q;
     GLint y;
-    #if !TGL_FEATURE_NO_COPY_COLOR
-    //GLint n;
-    #endif
 
     q = zb->pbuf;
     p1 = buf;
-    #if !TGL_FEATURE_NO_COPY_COLOR
-    //n = zb->xsize * PSZB;
-    #endif
     for (y = 0; y < zb->ysize; y++) {
     #if TGL_FEATURE_NO_COPY_COLOR == 1
 		for(GLint i = 0; i < zb->xsize; i++)
@@ -157,8 +151,8 @@
     #else
 		memcpy(p1, q, linesize);
 	#endif
-	p1 += linesize; //TODO make this a predictable behavior.
-	q = (PIXEL *) ((GLbyte *) q + zb->linesize);
+		p1 += linesize;
+		q = (PIXEL *) ((GLbyte *) q + zb->linesize);
     }
 }
 
@@ -536,9 +530,9 @@
 void ZB_clear(ZBuffer * zb, GLint clear_z, GLint z,
 	      GLint clear_color, GLint r, GLint g, GLint b)
 {
-#if TGL_FEATURE_RENDER_BITS != 24
-    GLint color;
-#endif
+//#if TGL_FEATURE_RENDER_BITS != 24
+    GLuint color;
+//#endif
     GLint y;
     PIXEL *pp;