TinyGL:

- fixed setting of 'GL_FRONT_AND_BACK' mode
- fixed setting of 'GL_SPOT_DIRECTION' angle
- optimization of drawing triangles and lines
- fixes in 'gluCylinder' and 'gluSphere' functions
- 'gluDisk' function added
- optimize function 'calc_buf'
- clean code

Flag: add lighting

info3ds, info3ds_u, test_glu0, test_glu1, test_glu2,
textures0, textures1, textures2:
- updated programs using 'gluCylinder' and 'gluSphere'

programs/develop/libraries/TinyGL/asm_fork/specbuf.asm

@@ -1,5 +1,5 @@
 ;
-; функции для вычисления зеркального цвета (блики)
+; functions for calculating specular color (glare)
 ;
 
 align 4
@@ -10,49 +10,41 @@ locals
 endl
 	mov dword[f_inc],SPECULAR_BUFFER_SIZE
 	mov ebx,[buf]
-	add ebx,offs_spec_buf
+	add ebx,GLSpecBuf.buf
 	mov dword[ebx],0.0 ;buf.buf[0] = 0.0
 	xor ecx,ecx
-	inc ecx
-	fld dword[shininess] ;сначала берем y
 	fld1
 	fidiv dword[f_inc]
-	fst dword[f_inc] ;f_inc = 1.0f/SPECULAR_BUFFER_SIZE
-	fst dword[val]
+	fstp dword[f_inc] ;f_inc = 1.0f/SPECULAR_BUFFER_SIZE
+	mov dword[val],0.0
 align 4
-	.cycle_0: ;for (i = 1; i <= SPECULAR_BUFFER_SIZE; i++)
+	.cycle_0: ;for (i = 1; i < SPECULAR_BUFFER_SIZE; i++)
+	inc ecx
 	cmp ecx,SPECULAR_BUFFER_SIZE
-	jg @f
-		;Вычисляем x^y
+	jge @f
+		fld dword[shininess]
+		fld dword[val]
+		fadd dword[f_inc]
+		fst dword[val] ;val += f_inc
+		;need to calculate pow(val, shininess)
 
-		fyl2x ;Стек FPU теперь содержит: st0=z=y*log2(x):
-		;Теперь считаем 2**z:
-		fld st0 ;Создаем еще одну копию z
-		frndint ;Округляем
+		fyl2x ;the FPU stack now contains: st0=z=y*log2(x):
+		;now we count 2**z:
+		fld st0 ;copy z
+		frndint
 		fsubr st0,st1  ;st1=z, st0=z-trunc(z)
 		f2xm1  ;st1=z, st0=2**(z-trunc(z))-1
 		fld1
 		faddp  ;st1=z, st0=2**(z-trunc(z))
 		fscale ;st1=z, st0=(2**trunc(z))*(2**(z-trunc(z)))=2**t
 		fxch st1
-		fstp st ;Результат остается на вершине стека st0
+		fstp st ;the result remains on the top of the stack st0
 
 		add ebx,4
 		fstp dword[ebx] ;buf.buf[i] = pow(val, shininess)
-		ffree st0 ;испорченный shininess
-		fincstp
-
-		fld dword[shininess] ;сначала берем y
-		fld dword[val]
-		fadd dword[f_inc]
-		fst dword[val] ;val += f_inc
-	inc ecx
 	jmp .cycle_0
 	@@:
-	ffree st0 ;val
-	fincstp
-	ffree st0 ;shininess
-	fincstp
+	mov dword[ebx+4],1.0
 	ret
 endp
 
@@ -70,22 +62,22 @@ endl
 	.cycle_0:
 	or eax,eax ;while (found)
 	jz @f
-	cmp [eax+offs_spec_shininess_i],ebx ;while (found.shininess_i != shininess_i)
+	cmp [eax+GLSpecBuf.shininess_i],ebx ;while (found.shininess_i != shininess_i)
 	je @f
 		mov ecx,[oldest]
-		mov ecx,[ecx+offs_spec_last_used]
-		cmp [eax+offs_spec_last_used],ecx ;if (found.last_used < oldest.last_used)
+		mov ecx,[ecx+GLSpecBuf.last_used]
+		cmp [eax+GLSpecBuf.last_used],ecx ;if (found.last_used < oldest.last_used)
 		jge .end_0
 			mov [oldest],eax ;oldest = found
 		.end_0:
-		mov eax,[eax+offs_spec_next] ;found = found.next
+		mov eax,[eax+GLSpecBuf.next] ;found = found.next
 		jmp .cycle_0
 	@@:
 	cmp dword[found],0 ;if (found) /* hey, found one! */
 	je @f
 		mov eax,[found]
 		mov ecx,[edx+GLContext.specbuf_used_counter]
-		mov [eax+offs_spec_last_used],ecx ;found.last_used = context.specbuf_used_counter
+		mov [eax+GLSpecBuf.last_used],ecx ;found.last_used = context.specbuf_used_counter
 		inc dword[edx+GLContext.specbuf_used_counter]
 		jmp .end_f ;return found
 	@@:
@@ -102,21 +94,21 @@ endl
 	@@:
 	inc dword[edx+GLContext.specbuf_num_buffers]
 	mov ecx,[edx+GLContext.specbuf_first]
-	mov [eax+offs_spec_next],ecx
+	mov [eax+GLSpecBuf.next],ecx
 	mov [edx+GLContext.specbuf_first],eax
 	mov ecx,[edx+GLContext.specbuf_used_counter]
-	mov [eax+offs_spec_last_used],ecx
+	mov [eax+GLSpecBuf.last_used],ecx
 	inc dword[edx+GLContext.specbuf_used_counter]
-	mov [eax+offs_spec_shininess_i],ebx
+	mov [eax+GLSpecBuf.shininess_i],ebx
 	stdcall calc_buf, eax,dword[shininess]
 	jmp .end_f
 	.end_1:
 	; overwrite the lru buffer
 	;tgl_trace("overwriting spec buffer :(\n");
 	mov eax,[oldest]
-	mov [eax+offs_spec_shininess_i],ebx
+	mov [eax+GLSpecBuf.shininess_i],ebx
 	mov ecx,[edx+GLContext.specbuf_used_counter]
-	mov [eax+offs_spec_last_used],ecx
+	mov [eax+GLSpecBuf.last_used],ecx
 	inc dword[edx+GLContext.specbuf_used_counter]
 	stdcall calc_buf, eax,dword[shininess]
 	.end_f: