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fs2open.github.com/code/graphics/scaler.cpp
T
penguin 0d7964b62b 1. Added gcc-compatible asm code. 
2. Added #ifndef NO_SOFTWARE_RENDERING
 - penguin
2003-03-02 05:45:04 +00:00

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/*
* Copyright (C) Volition, Inc. 1999. All rights reserved.
*
* All source code herein is the property of Volition, Inc. You may not sell
* or otherwise commercially exploit the source or things you created based on the
* source.
*
*/
/*
* $Logfile: /Freespace2/code/Graphics/Scaler.cpp $
* $Revision: 2.3 $
* $Date: 2003-03-02 05:45:04 $
* $Author: penguin $
*
* Routines to scale a bitmap.
*
* $Log: not supported by cvs2svn $
* Revision 2.2 2002/08/01 01:41:05 penguin
* The big include file move
*
* Revision 2.1 2002/07/07 19:55:59 penguin
* Back-port to MSVC
*
* Revision 2.0 2002/06/03 04:02:23 penguin
* Warpcore CVS sync
*
* Revision 1.2 2002/05/08 02:36:01 mharris
* porting
*
* Revision 1.1 2002/05/02 18:03:07 mharris
* Initial checkin - converted filenames and includes to lower case
*
*
* 9 7/20/99 1:49p Dave
* Peter Drake build. Fixed some release build warnings.
*
* 8 6/22/99 7:03p Dave
* New detail options screen.
*
* 7 5/12/99 5:33p Johne
* Don't use gr8_scaler() in pofview.
*
* 6 5/09/99 6:00p Dave
* Lots of cool new effects. E3 build tweaks.
*
* 5 1/14/99 6:06p Dave
* 100% full squad logo support for single player and multiplayer.
*
* 4 1/14/99 12:48a Dave
* Todo list bug fixes. Made a pass at putting briefing icons back into
* FRED. Sort of works :(
*
* 3 11/30/98 1:07p Dave
* 16 bit conversion, first run.
*
* 2 10/07/98 10:53a Dave
* Initial checkin.
*
* 1 10/07/98 10:49a Dave
*
* 40 4/02/98 2:01p Dave
* JAS: Increased constant for source of compiled code
*
* 39 4/01/98 9:21p John
* Made NDEBUG, optimized build with no warnings or errors.
*
* 38 4/01/98 7:15p John
* fixed bug with previous
*
* 37 4/01/98 6:45p John
* Reduced memory by combining compled_code ptrs.
*
* 36 3/22/98 3:28p John
* Added in stippled alpha for lower details. Made medium detail use
* engine glow.
*
* 35 3/10/98 4:18p John
* Cleaned up graphics lib. Took out most unused gr functions. Made D3D
* & Glide have popups and print screen. Took out all >8bpp software
* support. Made Fred zbuffer. Made zbuffer allocate dynamically to
* support Fred. Made zbuffering key off of functions rather than one
* global variable.
*
* 34 2/05/98 9:21p John
* Some new Direct3D code. Added code to monitor a ton of stuff in the
* game.
*
* 33 1/27/98 10:18a John
* fixed warning for optimized build
*
* 32 1/26/98 5:12p John
* Added in code for Pentium Pro specific optimizations. Speed up
* zbuffered correct tmapper about 35%. Speed up non-zbuffered scalers
* by about 25%.
*
* 31 1/19/98 6:15p John
* Fixed all my Optimized Build compiler warnings
*
* 30 12/04/97 12:09p John
* Made glows use scaler instead of tmapper so they don't rotate. Had to
* add a zbuffered scaler.
*
* 29 12/02/97 4:00p John
* Added first rev of thruster glow, along with variable levels of
* translucency, which retquired some restructing of palman.
*
* 28 11/30/97 4:33p John
* added 32-bpp aascaler
*
* 27 11/30/97 3:57p John
* Made fixed 32-bpp translucency. Made BmpMan always map translucent
* color into 255 even if you aren't supposed to remap and make it's
* palette black.
*
* 26 11/30/97 12:18p John
* added more 24 & 32-bpp primitives
*
* 25 11/29/97 2:06p John
* added mode 16-bpp support
*
* 24 11/14/97 12:30p John
* Fixed some DirectX bugs. Moved the 8-16 xlat tables into Graphics
* libs. Made 16-bpp DirectX modes know what bitmap format they're in.
*
* 23 10/19/97 12:55p John
* new code to lock / unlock surfaces for smooth directx integration.
*
* 22 10/15/97 4:48p John
* added 16-bpp aascaler
*
* 21 10/14/97 8:08a John
* added a bunch more 16 bit support
*
* 20 10/09/97 5:23p John
* Added support for more 16-bpp functions
*
* 19 8/04/97 4:47p John
* added gr_aascaler.
*
* 18 7/28/97 11:31a John
* made compiled code save all registers that it changes. When building
* optimized, my code was using EBX, and so was the compiler, so weird
* errors happened. Pushing/popping ebx fixed this.
*
* 17 7/16/97 5:29p John
* added palette table caching and made scaler and liner no light tmapper
* do alpha blending in 8 bpp mode.
*
* 16 7/10/97 2:06p John
* added code to specify alphablending type for bitmaps.
*
* 15 6/12/97 2:50a Lawrance
* bm_unlock() now passed bitmap number, not pointer
*
* 14 5/29/97 3:10p John
* Took out debug menu.
* Made software scaler draw larger bitmaps.
* Optimized Direct3D some.
*
* 13 5/12/97 12:27p John
* Restructured Graphics Library to add support for multiple renderers.
*
* 12 12/04/96 2:02p John
* Added fast compiled code to the scaler in 8,16,32 bpp modes.
*
* 11 12/03/96 8:08p John
* Added compiled code to 8bpp scaler. Made bitmaps that are trying to
* scale up too big to not draw.
*
* 10 12/03/96 11:12a John
* added commented out "filtering" code to scaler.
*
* 9 11/19/96 2:42p Allender
* fix up 32 bit scaler
*
* 8 11/15/96 11:27a Allender
* 16bpp version of scaler
*
* 7 11/07/96 6:19p John
* Added a bunch of 16bpp primitives so the game sort of runs in 16bpp
* mode.
*
* 6 10/26/96 1:40p John
* Added some now primitives to the 2d library and
* cleaned up some old ones.
*
* $NoKeywords: $
*/
#include <math.h>
#include <limits.h>
#include <stdio.h>
#include <conio.h>
#include <stdlib.h>
#include "graphics/scaler.h"
#include "graphics/2d.h"
#include "graphics/grinternal.h"
#include "math/floating.h"
#include "bmpman/bmpman.h"
#include "palman/palman.h"
#include "graphics/tmapscanline.h"
#include "globalincs/systemvars.h"
#include "io/key.h"
#include "graphics/colors.h"
#define MIN_SCALE_FACTOR 0.0001f
#define USE_COMPILED_CODE
#define TRANSPARENCY_COLOR_8 0xff
#define TRANSPARENCY_COLOR_16 0xffff
#define TRANSPARENCY_COLOR_32 0xffffffff
#define FIND_SCALED_NUM(x,x0,x1,y0,y1) (((((x)-(x0))*((y1)-(y0)))/((x1)-(x0)))+(y0))
#define MAX_CODE_SIZE 32768 //65536 JAS: Determed to be 8208 on April1,98, 16K seems safe
ubyte compiled_code[MAX_CODE_SIZE];
static int Max_size = 0;
/*
void test_code()
{
_asm mov ax, [esi+0xabcdef12]
_asm cmp ax, 255
_asm je 0xabcdef12
_asm mov [edi+0xabcdef12], ax
_asm mov ax, [esi+0xabcdef12]
}
*/
//----------------------------------------------------
// scaler_create_compiled_code8
//
// Creates code that looks like:
//
// @@: mov al, [esi+????]
// cmp al, TRANSPARENCY_COLOR_8
// je @f ; jump to next @@ label
// mov [edi+???], al ; If the source pixel is scaled up
// mov [edi+???], al ; there might be a lot of these lines
// ...
// @@: mov al, [esi+????]
//
ubyte *scaler_create_compiled_code8( int w, fix u, fix du )
{
int last_u, x;
ubyte * cc;
uint * last_jmp_pos;
cc = compiled_code;
//if ( abs(du) < F1_0 / 4 ) *cc++ = 0xCC;
// *cc++ = 0xCC; // Int3
// *cc++ = 0xc3; // RET
last_u = -1;
last_jmp_pos=NULL;
for (x=0; x<w; x++ ) {
if ( last_u != f2i(u) ) {
if ( last_jmp_pos ) {
*last_jmp_pos = (uint)cc - (uint)last_jmp_pos - 4;
}
*cc++ = 0x8a; *cc++ = 0x86; // mov al, [esi+imm]
*(uint *)cc = f2i(u); cc += 4;
last_u = f2i(u);
*cc++ = 0x3c; *cc++ = TRANSPARENCY_COLOR_8; // cmp al, 255
*cc++ = 0x0f; *cc++ = 0x84; // je rel32
last_jmp_pos = (uint *)cc;
cc += 4;
}
*cc++ = 0x88; *cc++ = 0x87; // mov [edi+imm], al
*(uint *)cc = x; cc += 4;
u += du;
}
if ( last_jmp_pos ) {
*last_jmp_pos = (uint)cc - (uint)last_jmp_pos - 4;
}
*cc++ = 0xc3; // RET
if ( cc >= &compiled_code[MAX_CODE_SIZE] )
Int3(); // GET JOHN NOW!
#ifdef FIND_MAX_SIZE
int size = cc - compiled_code;
if ( size > Max_size ) {
Max_size = size;
mprintf(( "Max size = %d\n", size ));
}
#endif
return compiled_code;
}
ubyte *scaler_create_compiled_code8_stippled( int w, fix u, fix du )
{
int last_u, x;
ubyte * cc;
uint * last_jmp_pos;
cc = compiled_code;
//if ( abs(du) < F1_0 / 4 ) *cc++ = 0xCC;
// *cc++ = 0xCC; // Int3
// *cc++ = 0xc3; // RET
last_u = -1;
last_jmp_pos=NULL;
for (x=0; x<w-1; x+=2 ) {
if ( last_u != f2i(u) ) {
if ( last_jmp_pos ) {
*last_jmp_pos = (uint)cc - (uint)last_jmp_pos - 4;
}
*cc++ = 0x8a; *cc++ = 0x86; // mov al, [esi+imm]
*(uint *)cc = f2i(u); cc += 4;
last_u = f2i(u);
*cc++ = 0x3c; *cc++ = TRANSPARENCY_COLOR_8; // cmp al, 255
*cc++ = 0x0f; *cc++ = 0x84; // je rel32
last_jmp_pos = (uint *)cc;
cc += 4;
}
*cc++ = 0x88; *cc++ = 0x87; // mov [edi+imm], al
*(uint *)cc = x; cc += 4;
u += du*2;
}
if ( last_jmp_pos ) {
*last_jmp_pos = (uint)cc - (uint)last_jmp_pos - 4;
}
*cc++ = 0xc3; // RET
if ( cc >= &compiled_code[MAX_CODE_SIZE] )
Int3(); // GET JOHN NOW!
#ifdef FIND_MAX_SIZE
int size = cc - compiled_code;
if ( size > Max_size ) {
Max_size = size;
mprintf(( "Max size = %d\n", size ));
}
#endif
return compiled_code;
}
#if 0 // never used
void test_code1()
{
_asm mov ebx, -1
_asm xor eax, eax
_asm xor ebx, ebx
_asm mov bl, BYTE PTR [edi-1412567278]
_asm add ebx, eax
_asm mov ebx, [ecx+ebx] ; blend it
_asm cmp ebp, [edx]
_asm add edx, 4
_asm jl [0xABCDEF12]
// xor eax, eax ; avoid ppro partial register stall
// mov ah, [esi+????] ; get the foreground pixel
// ; the following lines might be repeated
// xor ebx, ebx ; avoid ppro partial register stall
// mov bl, [edi+????] ; get the background pixel
// mov ebx, [ecx+ebx] ; blend it
// mov [edi+????], bl ; write it
}
#endif
/*
00130 b8 00 00 00 00 mov eax, 0
00135 8a a6 12 ef cd ab mov ah, BYTE PTR [esi-1412567278]
0013b 8a 87 12 ef cd ab mov al, BYTE PTR [edi-1412567278]
00141 8a 1c 01 mov bl, BYTE PTR [ecx+eax]
00141 8b 1c 01 mov ebx, DWORD PTR [ecx+eax]
00144 88 9f 12 ef cd ab mov BYTE PTR [edi-1412567278], bl
00130 33 c0 xor eax, eax
00132 33 db xor ebx, ebx
00134 8a 9f 12 ef cd ab mov bl, BYTE PTR [edi-1412567278]
0013a 03 d8 add ebx, eax
0013c 8b 1c 19 mov ebx, DWORD PTR [ecx+ebx]
0013f 3b 2a cmp ebp, DWORD PTR [edx]
00141 83 c2 04 add edx, 4
*/
//----------------------------------------------------
// scaler_create_compiled_code8_alpha
//
// Creates code that looks like:
//=============== Pentium ======================
// mov eax, 0
// mov ah, [esi+????] ; get the foreground pixel
// ; the following lines might be repeated
// mov al, [edi+????] ; get the background pixel
// mov bl, [ecx+eax] ; blend it
// mov [edi+????], bl ; write it
// ...
//============= Pentium Pro code =============
// xor eax, eax ; avoid ppro partial register stall
// mov ah, [esi+????] ; get the foreground pixel
// ; the following lines might be repeated
// xor ebx, ebx ; avoid ppro partial register stall
// mov bl, [edi+????] ; get the background pixel
// mov ebx, [ecx+ebx] ; blend it
// mov [edi+????], bl ; write it
ubyte *scaler_create_compiled_code8_alpha( int w, fix u, fix du )
{
int last_u, x;
ubyte * cc;
cc = compiled_code;
//if ( abs(du) < F1_0 / 4 ) *cc++ = 0xCC;
//*cc++ = 0xCC; // Int3
//*cc++ = 0xc3; // RET
last_u = -1;
if ( Gr_cpu > 5 ) {
// Pentium Pro optimized code.
for (x=0; x<w; x++ ) {
if ( last_u != f2i(u) ) {
*cc++ = 0x33; *cc++ = 0xc0; // xor eax, eax
*cc++ = 0x8a; *cc++ = 0xa6; // mov ah, [esi+imm]
//*cc++ = 0x8a; *cc++ = 0x86; // mov al, [esi+imm]
*(uint *)cc = f2i(u); cc += 4;
last_u = f2i(u);
}
*cc++ = 0x33; *cc++ = 0xdb; // xor ebx, ebx
*cc++ = 0x8a; *cc++ = 0x9f;
*(uint *)cc = x; cc += 4; // mov bl, [edi+imm]
*cc++ = 0x03; *cc++ = 0xd8; // add ebx, eax
*cc++ = 0x8b; *cc++ = 0x1c; *cc++ = 0x19; // mov ebx, BYTE PTR [ecx+ebx]
*cc++ = 0x88; *cc++ = 0x9f;
*(uint *)cc = x; cc += 4; // mov [edi+imm], bl
u += du;
}
} else {
// Pentium optimized code.
*cc++ = 0xb8; *(uint *)cc = 0; cc += 4; // mov eax, 0
for (x=0; x<w; x++ ) {
if ( last_u != f2i(u) ) {
*cc++ = 0x8a; *cc++ = 0xa6; // mov ah, [esi+imm]
*(uint *)cc = f2i(u); cc += 4;
last_u = f2i(u);
}
*cc++ = 0x8a; *cc++ = 0x87;
*(uint *)cc = x; cc += 4; // mov al, [edi+imm]
*cc++ = 0x8a; *cc++ = 0x1c; *cc++ = 0x01; // mov bl, BYTE PTR [ecx+eax]
*cc++ = 0x88; *cc++ = 0x9f;
*(uint *)cc = x; cc += 4; // mov [edi+imm], bl
u += du;
}
}
*cc++ = 0xc3; // RET
if ( cc >= &compiled_code[MAX_CODE_SIZE] )
Int3(); // GET JOHN NOW!
#ifdef FIND_MAX_SIZE
int size = cc - compiled_code;
if ( size > Max_size ) {
Max_size = size;
mprintf(( "Max size = %d\n", size ));
}
#endif
return compiled_code;
}
/*
for (x=0; x<w; x++ ) {
if ( fx_w > *zbuf ) {
uint c = sbits[ tmp_u >> 16 ]<<8;
*dbits = *((ubyte *)(lookup + (*dbits | c)));
}
dbits++;
zbuf++;
tmp_u += du;
}
*/
//----------------------------------------------------
// scaler_create_compiled_code8_alpha_zbuffered
//
// Creates code that looks like:
// mov eax, 0
// mov ah, [esi+????] ; get the foreground pixel
// ; the following lines might be repeated
// cmp fx_w, [edx+?????]
// jle @f
// mov al, [edi+????] ; get the background pixel
// mov bl, [ecx+eax] ; blend it
// mov [edi+????], bl ; write it
// @@:
// ...
//void test_code1()
//{
// _asm cmp 0xFFFFFFFF, [edx+0xabcdef12]
// _asm cmp ebp, [edx+0xabcdef12]
// _asm jle 0xabcdef12
//}
//; 302 : _asm cmp ebp, [edx+0xabcdef12]
// 00244 3b aa 12 ef cd ab cmp ebp, DWORD PTR [edx-1412567278]
//; 303 : _asm jle 0xabcdef12
// 0024a 0f 8e 12 ef cd ab jle -1412567278 ; abcdef12H
ubyte *scaler_create_compiled_code8_alpha_zbuffered( int w, fix u, fix du )
{
int last_u, x;
ubyte * cc;
uint *last_jmp_pos=NULL;
cc = compiled_code;
// xor eax, eax ; avoid ppro partial register stall
// mov ah, [esi+????] ; get the foreground pixel
// ; the following lines might be repeated
// xor ebx, ebx ; avoid ppro partial register stall
// mov bl, [edi+????] ; get the background pixel
// mov ebx, [ecx+ebx] ; blend it
// mov [edi+????], bl ; write it
//if ( abs(du) < F1_0 / 4 ) *cc++ = 0xCC;
//*cc++ = 0xCC; // Int3
//*cc++ = 0xc3; // RET
last_u = -1;
if ( Gr_cpu > 5 ) {
// Pentium Pro optimized code.
for (x=0; x<w; x++ ) {
if ( last_u != f2i(u) ) {
*cc++ = 0x33; *cc++ = 0xc0; // xor eax, eax
*cc++ = 0x8a; *cc++ = 0xa6; // mov ah, [esi+imm]
*(uint *)cc = f2i(u); cc += 4;
last_u = f2i(u);
}
*cc++ = 0x3b; *cc++ = 0xaa;
*(uint *)cc = x*4; cc += 4; // cmp ebp, [edx+imm]
// *cc++ = 0x3b; *cc++ = 0x2a; // cmp ebp, [edx]
// *cc++ = 0x83; *cc++ = 0xc2; *cc++ = 0x4; // add edx, 4
*cc++ = 0x0f; *cc++ = 0x8e; // jle (8e) imm
last_jmp_pos = (uint *)cc;
*(uint *)cc = 0; cc += 4;
*cc++ = 0x33; *cc++ = 0xdb; // xor ebx, ebx
*cc++ = 0x8a; *cc++ = 0x9f;
*(uint *)cc = x; cc += 4; // mov bl, [edi+imm]
*cc++ = 0x03; *cc++ = 0xd8; // add ebx, eax
*cc++ = 0x8b; *cc++ = 0x1c; *cc++ = 0x19; // mov ebx, BYTE PTR [ecx+ebx]
*cc++ = 0x88; *cc++ = 0x9f;
*(uint *)cc = x; cc += 4; // mov [edi+imm], bl
if ( last_jmp_pos ) {
*last_jmp_pos = (uint)cc - (uint)last_jmp_pos - 4;
last_jmp_pos = NULL;
}
u += du;
}
} else {
// Pentium optimized code.
*cc++ = 0xb8; *(uint *)cc = 0; cc += 4; // mov eax, 0
for (x=0; x<w; x++ ) {
if ( last_u != f2i(u) ) {
*cc++ = 0x8a; *cc++ = 0xa6; // mov ah, [esi+imm]
*(uint *)cc = f2i(u); cc += 4;
last_u = f2i(u);
}
*cc++ = 0x3b; *cc++ = 0xaa;
*(uint *)cc = x*4; cc += 4; // cmp ebp, [edx+imm]
*cc++ = 0x0f; *cc++ = 0x8e; // jle imm
last_jmp_pos = (uint *)cc;
*(uint *)cc = 0; cc += 4;
*cc++ = 0x8a; *cc++ = 0x87;
*(uint *)cc = x; cc += 4; // mov al, [edi+imm]
*cc++ = 0x8a; *cc++ = 0x1c; *cc++ = 0x01; // mov bl, BYTE PTR [ecx+eax]
*cc++ = 0x88; *cc++ = 0x9f;
*(uint *)cc = x; cc += 4; // mov [edi+imm], bl
if ( last_jmp_pos ) {
*last_jmp_pos = (uint)cc - (uint)last_jmp_pos - 4;
last_jmp_pos = NULL;
}
u += du;
}
}
*cc++ = 0xc3; // RET
if ( cc >= &compiled_code[MAX_CODE_SIZE] )
Int3(); // GET JOHN NOW!
#ifdef FIND_MAX_SIZE
int size = cc - compiled_code;
if ( size > Max_size ) {
Max_size = size;
mprintf(( "Max sizeZ = %d\n", size ));
}
#endif
return compiled_code;
}
int Gr_scaler_zbuffering = 0;
uint Gr_global_z;
MONITOR( ScalerNumCalls );
//----------------------------------------------------
// Scales current bitmap, between va and vb
void gr8_scaler(vertex *va, vertex *vb )
{
#if 1
if(Pofview_running){
return;
}
float x0, y0, x1, y1;
float u0, v0, u1, v1;
float clipped_x0, clipped_y0, clipped_x1, clipped_y1;
float clipped_u0, clipped_v0, clipped_u1, clipped_v1;
float xmin, xmax, ymin, ymax;
int dx0, dy0, dx1, dy1;
MONITOR_INC( ScalerNumCalls, 1 );
//============= CLIP IT =====================
x0 = va->sx; y0 = va->sy;
x1 = vb->sx; y1 = vb->sy;
xmin = i2fl(gr_screen.clip_left); ymin = i2fl(gr_screen.clip_top);
xmax = i2fl(gr_screen.clip_right); ymax = i2fl(gr_screen.clip_bottom);
u0 = va->u; v0 = va->v;
u1 = vb->u; v1 = vb->v;
// Check for obviously offscreen bitmaps...
if ( (y1<=y0) || (x1<=x0) ) return;
if ( (x1<xmin ) || (x0>xmax) ) return;
if ( (y1<ymin ) || (y0>ymax) ) return;
clipped_u0 = u0; clipped_v0 = v0;
clipped_u1 = u1; clipped_v1 = v1;
clipped_x0 = x0; clipped_y0 = y0;
clipped_x1 = x1; clipped_y1 = y1;
// Clip the left, moving u0 right as necessary
if ( x0 < xmin ) {
clipped_u0 = FIND_SCALED_NUM(xmin,x0,x1,u0,u1);
clipped_x0 = xmin;
}
// Clip the right, moving u1 left as necessary
if ( x1 > xmax ) {
clipped_u1 = FIND_SCALED_NUM(xmax,x0,x1,u0,u1);
clipped_x1 = xmax;
}
// Clip the top, moving v0 down as necessary
if ( y0 < ymin ) {
clipped_v0 = FIND_SCALED_NUM(ymin,y0,y1,v0,v1);
clipped_y0 = ymin;
}
// Clip the bottom, moving v1 up as necessary
if ( y1 > ymax ) {
clipped_v1 = FIND_SCALED_NUM(ymax,y0,y1,v0,v1);
clipped_y1 = ymax;
}
dx0 = fl2i(clipped_x0); dx1 = fl2i(clipped_x1);
dy0 = fl2i(clipped_y0); dy1 = fl2i(clipped_y1);
if (dx1<=dx0) return;
if (dy1<=dy0) return;
//============= DRAW IT =====================
int u, v, du, dv;
int y, w;
ubyte * sbits, * dbits;
bitmap * bp;
ubyte * spixels;
float tmpu, tmpv;
tmpu = (clipped_u1-clipped_u0) / (dx1-dx0);
if ( fl_abs(tmpu) < MIN_SCALE_FACTOR ) {
return; // scaled up way too far!
}
tmpv = (clipped_v1-clipped_v0) / (dy1-dy0);
if ( fl_abs(tmpv) < MIN_SCALE_FACTOR ) {
return; // scaled up way too far!
}
int is_stippled = 0;
/*
if ( !Detail.alpha_effects ) {
is_stippled = 1;
Gr_scaler_zbuffering = 0;
}
*/
if ( is_stippled ) {
bp = bm_lock( gr_screen.current_bitmap, 8, 0 );
} else {
bp = bm_lock( gr_screen.current_bitmap, 8, 0 );
}
du = fl2f(tmpu*(bp->w-1));
dv = fl2f(tmpv*(bp->h-1));
v = fl2f(clipped_v0*(bp->h-1));
u = fl2f(clipped_u0*(bp->w-1));
w = dx1 - dx0 + 1;
if ( w < 2 ) {
bm_unlock(gr_screen.current_bitmap);
return;
}
uint fx_w = 0;
if ( Gr_scaler_zbuffering && gr_zbuffering ) {
fx_w = (uint)fl2i(va->sw * GR_Z_RANGE)+gr_zoffset;
Gr_global_z = fx_w;
}
#ifdef USE_COMPILED_CODE
ubyte *cc=NULL;
if ( Gr_scaler_zbuffering && gr_zbuffering ) {
if ( gr_screen.current_alphablend_mode == GR_ALPHABLEND_FILTER ) {
cc = scaler_create_compiled_code8_alpha_zbuffered( w, u, du );
}
} else {
if ( gr_screen.current_alphablend_mode == GR_ALPHABLEND_FILTER ) {
if ( is_stippled ) {
cc = scaler_create_compiled_code8_stippled( w, u, du );
} else {
cc = scaler_create_compiled_code8_alpha( w, u, du );
}
} else {
cc = scaler_create_compiled_code8( w, u, du );
}
}
#endif
spixels = (ubyte *)bp->data;
gr_lock();
#ifndef NO_SOFTWARE_RENDERING
Tmap.pScreenBits = (uint)gr_screen.offscreen_buffer_base;
#endif
uint *zbuf;
for (y=dy0; y<=dy1; v += dv, y++ ) {
if ( is_stippled && (y&1) ) {
sbits = &spixels[bp->rowsize*(v>>16)+f2i(du)];
dbits = GR_SCREEN_PTR(ubyte,dx0+1,y);
} else {
sbits = &spixels[bp->rowsize*(v>>16)];
dbits = GR_SCREEN_PTR(ubyte,dx0,y);
}
uint lookup = 0;
if ( gr_screen.current_alphablend_mode == GR_ALPHABLEND_FILTER ) {
lookup = (uint)palette_get_blend_table(gr_screen.current_alpha);
}
if ( Gr_scaler_zbuffering && gr_zbuffering ) {
// zbuf = (uint *)&gr_zbuffer[(uint)dbits-(uint)Tmap.pScreenBits];
zbuf = (uint *)&gr_zbuffer[(uint)dbits-(uint)gr_screen.offscreen_buffer_base];
}
#ifdef USE_COMPILED_CODE
// Call the compiled code to draw one scanline
if ( Gr_scaler_zbuffering && gr_zbuffering && (gr_screen.current_alphablend_mode != GR_ALPHABLEND_FILTER)) {
Int3();
/*
int x, tmp_u;
tmp_u = u;
for (x=0; x<w; x++ ) {
if ( fx_w > *zbuf ) {
ubyte c = sbits[ tmp_u >> 16 ];
if ( c != TRANSPARENCY_COLOR_8 ) *dbits = c;
}
zbuf++;
dbits++;
tmp_u += du;
}
*/
} else {
/* {
int x, tmp_u;
tmp_u = u;
for (x=0; x<w; x++ ) {
if ( fx_w > *zbuf ) {
uint c = sbits[ tmp_u >> 16 ]<<8;
*dbits = *((ubyte *)(lookup + (*dbits | c)));
}
dbits++;
zbuf++;
tmp_u += du;
}
}
*/
#if defined _WIN32 && defined _MSC_VER
_asm push esi
_asm push edi
_asm push edx
_asm push ecx
_asm push ebx
_asm push eax
_asm mov ecx, lookup
_asm mov esi, sbits
_asm mov edi, dbits
_asm mov eax, cc
_asm mov edx, zbuf
_asm push ebp
_asm mov ebp, Gr_global_z
_asm call eax
_asm pop ebp
_asm pop eax
_asm pop ebx
_asm pop ecx
_asm pop edx
_asm pop edi
_asm pop esi
#elif defined __GNUC__
asm(
"push %%esi;"
"push %%edi;"
"push %%edx;"
"push %%ecx;"
"push %%ebx;"
"push %%eax;"
"mov %0,%%ecx;" // lookup
"mov %1,%%esi;" // sbits
"mov %2,%%edi;" // dbits
"mov %3,%%eax;" // cc
"mov %4,%%edx;" // zbuf
"push %%ebp;"
"mov %5,%%ebp;" // Gr_global_z
"call *%%eax;"
"pop %%ebp;"
"pop %%eax;"
"pop %%ebx;"
"pop %%ecx;"
"pop %%edx;"
"pop %%edi;"
"pop %%esi;"
: /* no outputs */
: "g" (lookup), "g" (sbits), "g" (dbits), "g" (cc), "g" (zbuf), "g" (Gr_global_z));
#else
#error asm not implemented
#endif
}
#else
if ( gr_screen.current_alphablend_mode == GR_ALPHABLEND_FILTER ) {
if ( Gr_scaler_zbuffering && gr_zbuffering ) {
int x, tmp_u;
tmp_u = u;
for (x=0; x<w; x++ ) {
if ( fx_w > *zbuf ) {
uint c = sbits[ tmp_u >> 16 ]<<8;
*dbits = *((ubyte *)(lookup + (*dbits | c)));
}
dbits++;
zbuf++;
tmp_u += du;
}
} else {
int x, tmp_u;
tmp_u = u;
for (x=0; x<w; x++ ) {
uint c = sbits[ tmp_u >> 16 ]<<8;
*dbits++ = palette_blend[*dbits|c];
tmp_u += du;
}
}
} else {
if ( Gr_scaler_zbuffering && gr_zbuffering ) {
int x, tmp_u;
tmp_u = u;
for (x=0; x<w; x++ ) {
if ( fx_w > *zbuf ) {
ubyte c = sbits[ tmp_u >> 16 ];
if ( c != TRANSPARENCY_COLOR_8 ) *dbits = c;
}
zbuf++;
dbits++;
tmp_u += du;
}
} else {
int x, tmp_u;
tmp_u = u;
for (x=0; x<w; x++ ) {
ubyte c = sbits[ tmp_u >> 16 ];
if ( c != TRANSPARENCY_COLOR_8 ) *dbits = c;
dbits++;
tmp_u += du;
}
}
}
#endif
}
gr_unlock();
bm_unlock(gr_screen.current_bitmap);
#endif
}
int aiee = 0;
alphacolor_old old_alphac;
//----------------------------------------------------
// Scales current bitmap, between va and vb
void gr8_aascaler(vertex *va, vertex *vb )
{
float x0, y0, x1, y1;
float u0, v0, u1, v1;
float clipped_x0, clipped_y0, clipped_x1, clipped_y1;
float clipped_u0, clipped_v0, clipped_u1, clipped_v1;
float xmin, xmax, ymin, ymax;
int dx0, dy0, dx1, dy1;
//if ( !Current_alphacolor ) return;
MONITOR_INC( ScalerNumCalls, 1 );
Assert(Fred_running);
if(!aiee){
old_alphac.used = 1;
old_alphac.r = 93;
old_alphac.g = 93;
old_alphac.b = 128;
old_alphac.alpha = 255;
//ac->type = type;
//ac->clr=clr;
//93, 93, 128, 255
calc_alphacolor_old(&old_alphac);
aiee = 1;
}
//============= CLIP IT =====================
x0 = va->sx; y0 = va->sy;
x1 = vb->sx; y1 = vb->sy;
xmin = i2fl(gr_screen.clip_left); ymin = i2fl(gr_screen.clip_top);
xmax = i2fl(gr_screen.clip_right); ymax = i2fl(gr_screen.clip_bottom);
u0 = va->u; v0 = va->v;
u1 = vb->u; v1 = vb->v;
// Check for obviously offscreen bitmaps...
if ( (y1<=y0) || (x1<=x0) ) return;
if ( (x1<xmin ) || (x0>xmax) ) return;
if ( (y1<ymin ) || (y0>ymax) ) return;
clipped_u0 = u0; clipped_v0 = v0;
clipped_u1 = u1; clipped_v1 = v1;
clipped_x0 = x0; clipped_y0 = y0;
clipped_x1 = x1; clipped_y1 = y1;
// Clip the left, moving u0 right as necessary
if ( x0 < xmin ) {
clipped_u0 = FIND_SCALED_NUM(xmin,x0,x1,u0,u1);
clipped_x0 = xmin;
}
// Clip the right, moving u1 left as necessary
if ( x1 > xmax ) {
clipped_u1 = FIND_SCALED_NUM(xmax,x0,x1,u0,u1);
clipped_x1 = xmax;
}
// Clip the top, moving v0 down as necessary
if ( y0 < ymin ) {
clipped_v0 = FIND_SCALED_NUM(ymin,y0,y1,v0,v1);
clipped_y0 = ymin;
}
// Clip the bottom, moving v1 up as necessary
if ( y1 > ymax ) {
clipped_v1 = FIND_SCALED_NUM(ymax,y0,y1,v0,v1);
clipped_y1 = ymax;
}
dx0 = fl2i(clipped_x0); dx1 = fl2i(clipped_x1);
dy0 = fl2i(clipped_y0); dy1 = fl2i(clipped_y1);
if (dx1<=dx0) return;
if (dy1<=dy0) return;
//============= DRAW IT =====================
int u, v, du, dv;
int y, w;
ubyte * sbits, * dbits;
bitmap * bp;
ubyte * spixels;
float tmpu, tmpv;
tmpu = (clipped_u1-clipped_u0) / (dx1-dx0);
if ( fl_abs(tmpu) < MIN_SCALE_FACTOR ) {
return; // scaled up way too far!
}
tmpv = (clipped_v1-clipped_v0) / (dy1-dy0);
if ( fl_abs(tmpv) < MIN_SCALE_FACTOR ) {
return; // scaled up way too far!
}
bp = bm_lock( gr_screen.current_bitmap, 8, BMP_AABITMAP );
du = fl2f(tmpu*(bp->w-1));
dv = fl2f(tmpv*(bp->h-1));
v = fl2f(clipped_v0*(bp->h-1));
u = fl2f(clipped_u0*(bp->w-1));
w = dx1 - dx0 + 1;
#ifdef USE_COMPILED_CODE
ubyte *cc;
if ( Gr_scaler_zbuffering && gr_zbuffering ) {
//cc = scaler_create_compiled_code8_alpha_zbuffered( w, u, du );
} else {
cc = scaler_create_compiled_code8_alpha( w, u, du );
}
#endif
spixels = (ubyte *)bp->data;
gr_lock();
uint fx_w = 0;
if ( Gr_scaler_zbuffering && gr_zbuffering ) {
fx_w = (uint)fl2i(va->sw * GR_Z_RANGE)+gr_zoffset;
}
for (y=dy0; y<=dy1; y++ ) {
sbits = &spixels[bp->rowsize*(v>>16)];
dbits = GR_SCREEN_PTR(ubyte,dx0,y);
// uint lookup = (uint)&Current_alphacolor->table.lookup[0][0];
uint lookup = (uint)&old_alphac.table.lookup[0][0];
#ifdef USE_COMPILED_CODE
// Call the compiled code to draw one scanline
if ( Gr_scaler_zbuffering && gr_zbuffering ) {
int x, tmp_u;
tmp_u = u;
// uint *zbuf = (uint *)&gr_zbuffer[(uint)dbits-(uint)Tmap.pScreenBits];
uint *zbuf = (uint *)&gr_zbuffer[(uint)dbits-(uint)gr_screen.offscreen_buffer_base];
for (x=0; x<w; x++ ) {
if ( fx_w > *zbuf ) {
// uint c = sbits[ tmp_u >> 16 ];
// *dbits = Current_alphacolor->table.lookup[c][*dbits];
*dbits = (ubyte)0x00;
}
zbuf++;
dbits++;
tmp_u += du;
}
} else {
#if defined _WIN32 && defined _MSC_VER
_asm push esi
_asm push edi
_asm push ecx
_asm push ebx
_asm push eax
_asm mov ecx, lookup
_asm mov esi, sbits
_asm mov edi, dbits
_asm mov eax, cc
_asm call eax
_asm pop eax
_asm pop ebx
_asm pop ecx
_asm pop edi
_asm pop esi
#elif defined __GNUC__
asm(
"push %%esi;"
"push %%edi;"
"push %%ecx;"
"push %%ebx;"
"push %%eax;"
"mov %0,%%ecx;" // lookup
"mov %1,%%esi;" // sbits
"mov %2,%%edi;" // dbits
"mov %3,%%eax;" // cc
"call *%%eax;"
"pop %%eax;"
"pop %%ebx;"
"pop %%ecx;"
"pop %%edi;"
"pop %%esi;"
: /* no outputs */
: "g" (lookup), "g" (sbits), "g" (dbits), "g" (cc));
#else
#error asm not implemented
#endif
}
#else
if ( Gr_scaler_zbuffering && gr_zbuffering ) {
int x, tmp_u;
tmp_u = u;
// uint *zbuf = (uint *)&gr_zbuffer[(uint)dbits-(uint)Tmap.pScreenBits];
uint *zbuf = (uint *)&gr_zbuffer[(uint)dbits-(uint)gr_screen.offscreen_buffer_base];
for (x=0; x<w; x++ ) {
if ( fx_w > *zbuf ) {
uint c = sbits[ tmp_u >> 16 ];
*dbits = Current_alphacolor->table.lookup[c][*dbits];
}
zbuf++;
dbits++;
tmp_u += du;
}
} else {
int x, tmp_u;
tmp_u = u;
for (x=0; x<w; x++ ) {
uint c = sbits[ tmp_u >> 16 ];
*dbits = Current_alphacolor->table.lookup[c][*dbits];
dbits++;
tmp_u += du;
}
}
#endif
v += dv;
}
gr_unlock();
bm_unlock(gr_screen.current_bitmap);
}
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