992 lines
24 KiB
C
992 lines
24 KiB
C
/* $Id: bitblt.c,v 1.1.1.1 2006/03/17 19:51:56 zicodxx Exp $ */
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/*
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THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX
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SOFTWARE CORPORATION ("PARALLAX"). PARALLAX, IN DISTRIBUTING THE CODE TO
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END-USERS, AND SUBJECT TO ALL OF THE TERMS AND CONDITIONS HEREIN, GRANTS A
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ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS
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IN USING, DISPLAYING, AND CREATING DERIVATIVE WORKS THEREOF, SO LONG AS
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SUCH USE, DISPLAY OR CREATION IS FOR NON-COMMERCIAL, ROYALTY OR REVENUE
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FREE PURPOSES. IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
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CONTAINED HEREIN FOR REVENUE-BEARING PURPOSES. THE END-USER UNDERSTANDS
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AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE.
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COPYRIGHT 1993-1999 PARALLAX SOFTWARE CORPORATION. ALL RIGHTS RESERVED.
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*/
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/*
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*
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* Routines for bitblt's.
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*
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*/
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#ifdef HAVE_CONFIG_H
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#include <conf.h>
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#endif
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#include <string.h>
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#include "u_mem.h"
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#include "gr.h"
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#include "grdef.h"
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#include "rle.h"
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#include "mono.h"
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#include "byteswap.h" // because of rle code that has short for row offsets
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#include "error.h"
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#ifdef OGL
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#include "ogl_init.h"
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#endif
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int gr_bitblt_dest_step_shift = 0;
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int gr_bitblt_double = 0;
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ubyte *gr_bitblt_fade_table=NULL;
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extern void gr_vesa_bitmap( grs_bitmap * source, grs_bitmap * dest, int x, int y );
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void gr_linear_movsd( ubyte * source, ubyte * dest, unsigned int nbytes);
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// This code aligns edi so that the destination is aligned to a dword boundry before rep movsd
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#if !defined(NO_ASM) && defined(__WATCOMC__)
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#pragma aux gr_linear_movsd parm [esi] [edi] [ecx] modify exact [ecx esi edi eax ebx] = \
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" cld " \
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" mov ebx, ecx " \
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" mov eax, edi" \
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" and eax, 011b" \
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" jz d_aligned" \
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" mov ecx, 4" \
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" sub ecx, eax" \
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" sub ebx, ecx" \
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" rep movsb" \
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" d_aligned: " \
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" mov ecx, ebx" \
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" shr ecx, 2" \
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" rep movsd" \
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" mov ecx, ebx" \
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" and ecx, 11b" \
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" rep movsb";
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#elif !defined(NO_ASM) && defined(__GNUC__)
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inline void gr_linear_movsd(ubyte *src, ubyte *dest, unsigned int num_pixels) {
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int dummy[3];
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__asm__ __volatile__ (
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" cld;"
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" movl %%ecx, %%ebx;"
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" movl %%edi, %%eax;"
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" andl $3, %%eax;"
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" jz 0f;"
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" movl $4, %%ecx;"
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" subl %%eax,%%ecx;"
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" subl %%ecx,%%ebx;"
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" rep; movsb;"
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"0: ;"
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" movl %%ebx, %%ecx;"
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" shrl $2, %%ecx;"
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" rep; movsl;"
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" movl %%ebx, %%ecx;"
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" andl $3, %%ecx;"
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" rep; movsb"
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: "=S" (dummy[0]), "=D" (dummy[1]), "=c" (dummy[2])
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: "0" (src), "1" (dest), "2" (num_pixels)
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: "%eax", "%ebx");
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}
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#elif !defined(NO_ASM) && defined(_MSC_VER)
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__inline void gr_linear_movsd(ubyte *src, ubyte *dest, unsigned int num_pixels)
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{
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__asm {
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mov esi, [src]
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mov edi, [dest]
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mov ecx, [num_pixels]
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cld
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mov ebx, ecx
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mov eax, edi
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and eax, 011b
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jz d_aligned
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mov ecx, 4
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sub ecx, eax
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sub ebx, ecx
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rep movsb
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d_aligned:
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mov ecx, ebx
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shr ecx, 2
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rep movsd
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mov ecx, ebx
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and ecx, 11b
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rep movsb
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}
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}
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#else // NO_ASM or unknown compiler
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#define THRESHOLD 8
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#ifdef RELEASE
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#define test_byteblit 0
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#else
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ubyte test_byteblit = 0;
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#endif
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void gr_linear_movsd(ubyte * src, ubyte * dest, unsigned int num_pixels )
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{
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memcpy(dest,src,num_pixels);
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}
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#endif //#ifdef NO_ASM
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static void gr_linear_rep_movsdm(ubyte * src, ubyte * dest, unsigned int num_pixels );
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#if !defined(NO_ASM) && defined(__WATCOMC__)
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#pragma aux gr_linear_rep_movsdm parm [esi] [edi] [ecx] modify exact [ecx esi edi eax] = \
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"nextpixel:" \
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"mov al,[esi]" \
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"inc esi" \
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"cmp al, " TRANSPARENCY_COLOR_STR \
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"je skip_it" \
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"mov [edi], al" \
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"skip_it:" \
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"inc edi" \
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"dec ecx" \
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"jne nextpixel";
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#elif !defined(NO_ASM) && defined(__GNUC__)
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static inline void gr_linear_rep_movsdm(ubyte * src, ubyte * dest, unsigned int num_pixels ) {
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int dummy[3];
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__asm__ __volatile__ (
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"0: ;"
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" movb (%%esi), %%al;"
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" incl %%esi;"
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" cmpb $" TRANSPARENCY_COLOR_STR ", %%al;"
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" je 1f;"
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" movb %%al,(%%edi);"
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"1: ;"
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" incl %%edi;"
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" decl %%ecx;"
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" jne 0b"
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: "=S" (dummy[0]), "=D" (dummy[1]), "=c" (dummy[2])
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: "0" (src), "1" (dest), "2" (num_pixels)
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: "%eax");
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}
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#elif !defined(NO_ASM) && defined(_MSC_VER)
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__inline void gr_linear_rep_movsdm(ubyte * src, ubyte * dest, unsigned int num_pixels )
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{
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__asm {
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nextpixel:
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mov esi, [src]
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mov edi, [dest]
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mov ecx, [num_pixels]
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mov al, [esi]
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inc esi
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cmp al, TRANSPARENCY_COLOR
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je skip_it
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mov [edi], al
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skip_it:
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inc edi
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dec ecx
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jne nextpixel
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}
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}
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#else
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static void gr_linear_rep_movsdm(ubyte * src, ubyte * dest, unsigned int num_pixels )
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{
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int i;
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for (i=0; i<num_pixels; i++ ) {
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if (*src != TRANSPARENCY_COLOR )
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*dest = *src;
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dest++;
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src++;
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}
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}
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#endif
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static void gr_linear_rep_movsdm_faded(ubyte * src, ubyte * dest, unsigned int num_pixels, ubyte fade_value );
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#if !defined(NO_ASM) && defined(__WATCOMC__)
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#pragma aux gr_linear_rep_movsdm_faded parm [esi] [edi] [ecx] [ebx] modify exact [ecx esi edi eax ebx] = \
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" xor eax, eax" \
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" mov ah, bl" \
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"nextpixel:" \
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"mov al,[esi]" \
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"inc esi" \
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"cmp al, " TRANSPARENCY_COLOR_STR \
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"je skip_it" \
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"mov al, gr_fade_table[eax]" \
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"mov [edi], al" \
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"skip_it:" \
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"inc edi" \
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"dec ecx" \
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"jne nextpixel";
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#elif !defined(NO_ASM) && defined(__GNUC__)
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/* #pragma aux gr_linear_rep_movsdm_faded parm [esi] [edi] [ecx] [ebx] modify exact [ecx esi edi eax ebx] */
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static inline void gr_linear_rep_movsdm_faded(ubyte * src, ubyte * dest, unsigned int num_pixels, ubyte fade_value ) {
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int dummy[4];
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__asm__ __volatile__ (
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" xorl %%eax, %%eax;"
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" movb %%bl, %%ah;"
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"0:;"
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" movb (%%esi), %%al;"
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" incl %%esi;"
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" cmpb $" TRANSPARENCY_COLOR_STR ", %%al;"
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" je 1f;"
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#ifdef __ELF__
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" movb gr_fade_table(%%eax), %%al;"
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#else
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" movb _gr_fade_table(%%eax), %%al;"
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#endif
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" movb %%al, (%%edi);"
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"1:"
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" incl %%edi;"
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" decl %%ecx;"
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" jne 0b"
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: "=S" (dummy[0]), "=D" (dummy[1]), "=c" (dummy[2]), "=b" (dummy[3])
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: "0" (src), "1" (dest), "2" (num_pixels), "3" (fade_value)
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: "%eax");
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}
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#elif !defined(NO_ASM) && defined(_MSC_VER)
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__inline void gr_linear_rep_movsdm_faded(void * src, void * dest, unsigned int num_pixels, ubyte fade_value )
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{
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__asm {
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mov esi, [src]
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mov edi, [dest]
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mov ecx, [num_pixels]
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movzx ebx, byte ptr [fade_value]
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xor eax, eax
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mov ah, bl
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nextpixel:
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mov al, [esi]
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inc esi
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cmp al, TRANSPARENCY_COLOR
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je skip_it
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mov al, gr_fade_table[eax]
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mov [edi], al
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skip_it:
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inc edi
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dec ecx
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jne nextpixel
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}
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}
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#else
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static void gr_linear_rep_movsdm_faded(ubyte * src, ubyte * dest, unsigned int num_pixels, ubyte fade_value )
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{
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int i;
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ubyte source;
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ubyte *fade_base;
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fade_base = gr_fade_table + (fade_value * 256);
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for (i=num_pixels; i != 0; i-- )
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{
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source = *src;
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if (source != (ubyte)TRANSPARENCY_COLOR )
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*dest = *(fade_base + source);
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dest++;
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src++;
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}
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}
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#endif
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void gr_linear_rep_movsd_2x(ubyte *src, ubyte *dest, unsigned int num_dest_pixels);
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#if !defined(NO_ASM) && defined(__WATCOMC__)
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#pragma aux gr_linear_rep_movsd_2x parm [esi] [edi] [ecx] modify exact [ecx esi edi eax ebx] = \
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"shr ecx, 1" \
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"jnc nextpixel" \
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"mov al, [esi]" \
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"mov [edi], al" \
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"inc esi" \
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"inc edi" \
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"cmp ecx, 0" \
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"je done" \
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"nextpixel:" \
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"mov al,[esi]" \
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"mov ah, al" \
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"mov [edi], ax" \
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"inc esi" \
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"inc edi" \
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"inc edi" \
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"dec ecx" \
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"jne nextpixel" \
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"done:"
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#elif !defined(NO_ASM) && defined (__GNUC__)
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inline void gr_linear_rep_movsd_2x(ubyte *src, ubyte *dest, unsigned int num_dest_pixels)
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{
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/* #pragma aux gr_linear_rep_movsd_2x parm [esi] [edi] [ecx] modify exact [ecx esi edi eax ebx] */
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int dummy[3];
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__asm__ __volatile__ (
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"shrl $1, %%ecx;"
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"jnc 0f;"
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"movb (%%esi), %%al;"
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"movb %%al, (%%edi);"
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"incl %%esi;"
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"incl %%edi;"
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"cmpl $0, %%ecx;"
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"je 1f;"
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"0: ;"
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"movb (%%esi), %%al;"
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"movb %%al, %%ah;"
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"movw %%ax, (%%edi);"
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"incl %%esi;"
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"incl %%edi;"
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"incl %%edi;"
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"decl %%ecx;"
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"jne 0b;"
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"1:"
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: "=S" (dummy[0]), "=D" (dummy[1]), "=c" (dummy[2])
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: "0" (src), "1" (dest), "2" (num_dest_pixels)
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: "%eax");
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}
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#elif !defined(NO_ASM) && defined(_MSC_VER)
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__inline void gr_linear_rep_movsd_2x(ubyte *src, ubyte *dest, unsigned int num_dest_pixels)
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{
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__asm {
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mov esi, [src]
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mov edi, [dest]
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mov ecx, [num_dest_pixels]
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shr ecx, 1
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jnc nextpixel
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mov al, [esi]
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mov [edi], al
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inc esi
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inc edi
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cmp ecx, 0
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je done
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nextpixel:
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mov al, [esi]
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mov ah, al
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mov [edi], ax
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inc esi
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inc edi
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inc edi
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dec ecx
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jne nextpixel
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done:
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}
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}
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#else
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void gr_linear_rep_movsd_2x(ubyte *src, ubyte *dest, unsigned int num_pixels)
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{
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register ubyte c;
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while (num_pixels--) {
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if (num_pixels&1)
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*dest++=*src++;
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else {
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unsigned short *sp=(unsigned short *)dest;
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c=*src++;
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*sp=((short)c<<8)|(short)c;
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dest+=2;
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}
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}
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}
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#endif
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void gr_ubitmap00( int x, int y, grs_bitmap *bm )
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{
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register int y1;
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int dest_rowsize;
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unsigned char * dest;
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unsigned char * src;
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dest_rowsize=grd_curcanv->cv_bitmap.bm_rowsize << gr_bitblt_dest_step_shift;
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dest = &(grd_curcanv->cv_bitmap.bm_data[ dest_rowsize*y+x ]);
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src = bm->bm_data;
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for (y1=0; y1 < bm->bm_h; y1++ ) {
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if (gr_bitblt_double)
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gr_linear_rep_movsd_2x( src, dest, bm->bm_w );
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else
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gr_linear_movsd( src, dest, bm->bm_w );
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src += bm->bm_rowsize;
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dest+= (int)(dest_rowsize);
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}
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}
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void gr_ubitmap00m( int x, int y, grs_bitmap *bm )
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{
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register int y1;
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int dest_rowsize;
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unsigned char * dest;
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unsigned char * src;
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dest_rowsize=grd_curcanv->cv_bitmap.bm_rowsize << gr_bitblt_dest_step_shift;
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dest = &(grd_curcanv->cv_bitmap.bm_data[ dest_rowsize*y+x ]);
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src = bm->bm_data;
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if (gr_bitblt_fade_table==NULL) {
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for (y1=0; y1 < bm->bm_h; y1++ ) {
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gr_linear_rep_movsdm( src, dest, bm->bm_w );
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src += bm->bm_rowsize;
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dest+= (int)(dest_rowsize);
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}
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} else {
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for (y1=0; y1 < bm->bm_h; y1++ ) {
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gr_linear_rep_movsdm_faded( src, dest, bm->bm_w, gr_bitblt_fade_table[y1+y] );
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src += bm->bm_rowsize;
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dest+= (int)(dest_rowsize);
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}
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}
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}
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#if 0
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" jmp aligned4 " \
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" mov eax, edi " \
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" and eax, 11b " \
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" jz aligned4 " \
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" mov ebx, 4 " \
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" sub ebx, eax " \
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" sub ecx, ebx " \
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"alignstart: " \
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" mov al, [esi] " \
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" add esi, 4 " \
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" mov [edi], al " \
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" inc edi " \
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" dec ebx " \
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" jne alignstart " \
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"aligned4: "
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#endif
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void gr_ubitmap012( int x, int y, grs_bitmap *bm )
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{
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register int x1, y1;
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unsigned char * src;
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src = bm->bm_data;
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for (y1=y; y1 < (y+bm->bm_h); y1++ ) {
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for (x1=x; x1 < (x+bm->bm_w); x1++ ) {
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gr_setcolor( *src++ );
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gr_upixel( x1, y1 );
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}
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}
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}
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void gr_ubitmap012m( int x, int y, grs_bitmap *bm )
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{
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register int x1, y1;
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unsigned char * src;
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src = bm->bm_data;
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for (y1=y; y1 < (y+bm->bm_h); y1++ ) {
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for (x1=x; x1 < (x+bm->bm_w); x1++ ) {
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if ( *src != TRANSPARENCY_COLOR ) {
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gr_setcolor( *src );
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gr_upixel( x1, y1 );
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}
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src++;
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}
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}
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}
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void gr_ubitmapGENERIC(int x, int y, grs_bitmap * bm)
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{
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register int x1, y1;
|
|
|
|
for (y1=0; y1 < bm->bm_h; y1++ ) {
|
|
for (x1=0; x1 < bm->bm_w; x1++ ) {
|
|
gr_setcolor( gr_gpixel(bm,x1,y1) );
|
|
gr_upixel( x+x1, y+y1 );
|
|
}
|
|
}
|
|
}
|
|
|
|
void gr_ubitmapGENERICm(int x, int y, grs_bitmap * bm)
|
|
{
|
|
register int x1, y1;
|
|
ubyte c;
|
|
|
|
for (y1=0; y1 < bm->bm_h; y1++ ) {
|
|
for (x1=0; x1 < bm->bm_w; x1++ ) {
|
|
c = gr_gpixel(bm,x1,y1);
|
|
if ( c != TRANSPARENCY_COLOR ) {
|
|
gr_setcolor( c );
|
|
gr_upixel( x+x1, y+y1 );
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// From Linear to Linear
|
|
void gr_bm_ubitblt00(int w, int h, int dx, int dy, int sx, int sy, grs_bitmap * src, grs_bitmap * dest)
|
|
{
|
|
unsigned char * dbits;
|
|
unsigned char * sbits;
|
|
//int src_bm_rowsize_2, dest_bm_rowsize_2;
|
|
int dstep;
|
|
|
|
int i;
|
|
|
|
sbits = src->bm_data + (src->bm_rowsize * sy) + sx;
|
|
dbits = dest->bm_data + (dest->bm_rowsize * dy) + dx;
|
|
|
|
dstep = dest->bm_rowsize << gr_bitblt_dest_step_shift;
|
|
|
|
// No interlacing, copy the whole buffer.
|
|
for (i=0; i < h; i++ ) {
|
|
if (gr_bitblt_double)
|
|
gr_linear_rep_movsd_2x( sbits, dbits, w );
|
|
else
|
|
gr_linear_movsd( sbits, dbits, w );
|
|
sbits += src->bm_rowsize;
|
|
dbits += dstep;
|
|
}
|
|
}
|
|
// From Linear to Linear Masked
|
|
void gr_bm_ubitblt00m(int w, int h, int dx, int dy, int sx, int sy, grs_bitmap * src, grs_bitmap * dest)
|
|
{
|
|
unsigned char * dbits;
|
|
unsigned char * sbits;
|
|
//int src_bm_rowsize_2, dest_bm_rowsize_2;
|
|
|
|
int i;
|
|
|
|
sbits = src->bm_data + (src->bm_rowsize * sy) + sx;
|
|
dbits = dest->bm_data + (dest->bm_rowsize * dy) + dx;
|
|
|
|
// No interlacing, copy the whole buffer.
|
|
|
|
if (gr_bitblt_fade_table==NULL) {
|
|
for (i=0; i < h; i++ ) {
|
|
gr_linear_rep_movsdm( sbits, dbits, w );
|
|
sbits += src->bm_rowsize;
|
|
dbits += dest->bm_rowsize;
|
|
}
|
|
} else {
|
|
for (i=0; i < h; i++ ) {
|
|
gr_linear_rep_movsdm_faded( sbits, dbits, w, gr_bitblt_fade_table[dy+i] );
|
|
sbits += src->bm_rowsize;
|
|
dbits += dest->bm_rowsize;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
extern void gr_lbitblt( grs_bitmap * source, grs_bitmap * dest, int height, int width );
|
|
|
|
// Clipped bitmap ...
|
|
|
|
void gr_bitmap( int x, int y, grs_bitmap *bm )
|
|
{
|
|
int dx1=x, dx2=x+bm->bm_w-1;
|
|
int dy1=y, dy2=y+bm->bm_h-1;
|
|
int sx=0, sy=0;
|
|
|
|
if ((dx1 >= grd_curcanv->cv_bitmap.bm_w ) || (dx2 < 0)) return;
|
|
if ((dy1 >= grd_curcanv->cv_bitmap.bm_h) || (dy2 < 0)) return;
|
|
if ( dx1 < 0 ) { sx = -dx1; dx1 = 0; }
|
|
if ( dy1 < 0 ) { sy = -dy1; dy1 = 0; }
|
|
if ( dx2 >= grd_curcanv->cv_bitmap.bm_w ) { dx2 = grd_curcanv->cv_bitmap.bm_w-1; }
|
|
if ( dy2 >= grd_curcanv->cv_bitmap.bm_h ) { dy2 = grd_curcanv->cv_bitmap.bm_h-1; }
|
|
|
|
// Draw bitmap bm[x,y] into (dx1,dy1)-(dx2,dy2)
|
|
|
|
gr_bm_ubitblt(dx2-dx1+1,dy2-dy1+1, dx1, dy1, sx, sy, bm, &grd_curcanv->cv_bitmap );
|
|
|
|
}
|
|
|
|
void gr_bm_ubitblt00_rle(int w, int h, int dx, int dy, int sx, int sy, grs_bitmap * src, grs_bitmap * dest)
|
|
{
|
|
unsigned char * dbits;
|
|
unsigned char * sbits;
|
|
int i, data_offset;
|
|
|
|
data_offset = 1;
|
|
if (src->bm_flags & BM_FLAG_RLE_BIG)
|
|
data_offset = 2;
|
|
|
|
sbits = &src->bm_data[4 + (src->bm_h*data_offset)];
|
|
|
|
for (i=0; i<sy; i++ )
|
|
sbits += (int)(INTEL_SHORT(src->bm_data[4+(i*data_offset)]));
|
|
|
|
dbits = dest->bm_data + (dest->bm_rowsize * dy) + dx;
|
|
|
|
// No interlacing, copy the whole buffer.
|
|
for (i=0; i < h; i++ ) {
|
|
gr_rle_expand_scanline( dbits, sbits, sx, sx+w-1 );
|
|
if ( src->bm_flags & BM_FLAG_RLE_BIG )
|
|
sbits += (int)INTEL_SHORT(*((short *)&(src->bm_data[4+((i+sy)*data_offset)])));
|
|
else
|
|
sbits += (int)(src->bm_data[4+i+sy]);
|
|
dbits += dest->bm_rowsize << gr_bitblt_dest_step_shift;
|
|
}
|
|
}
|
|
|
|
void gr_bm_ubitblt00m_rle(int w, int h, int dx, int dy, int sx, int sy, grs_bitmap * src, grs_bitmap * dest)
|
|
{
|
|
unsigned char * dbits;
|
|
unsigned char * sbits;
|
|
int i, data_offset;
|
|
|
|
data_offset = 1;
|
|
if (src->bm_flags & BM_FLAG_RLE_BIG)
|
|
data_offset = 2;
|
|
|
|
sbits = &src->bm_data[4 + (src->bm_h*data_offset)];
|
|
for (i=0; i<sy; i++ )
|
|
sbits += (int)(INTEL_SHORT(src->bm_data[4+(i*data_offset)]));
|
|
|
|
dbits = dest->bm_data + (dest->bm_rowsize * dy) + dx;
|
|
|
|
// No interlacing, copy the whole buffer.
|
|
for (i=0; i < h; i++ ) {
|
|
gr_rle_expand_scanline_masked( dbits, sbits, sx, sx+w-1 );
|
|
if ( src->bm_flags & BM_FLAG_RLE_BIG )
|
|
sbits += (int)INTEL_SHORT(*((short *)&(src->bm_data[4+((i+sy)*data_offset)])));
|
|
else
|
|
sbits += (int)(src->bm_data[4+i+sy]);
|
|
dbits += dest->bm_rowsize << gr_bitblt_dest_step_shift;
|
|
}
|
|
}
|
|
|
|
// in rle.c
|
|
|
|
extern void gr_rle_expand_scanline_generic( grs_bitmap * dest, int dx, int dy, ubyte *src, int x1, int x2 );
|
|
extern void gr_rle_expand_scanline_generic_masked( grs_bitmap * dest, int dx, int dy, ubyte *src, int x1, int x2 );
|
|
extern void gr_rle_expand_scanline_svga_masked( grs_bitmap * dest, int dx, int dy, ubyte *src, int x1, int x2 );
|
|
|
|
void gr_bm_ubitblt0x_rle(int w, int h, int dx, int dy, int sx, int sy, grs_bitmap * src, grs_bitmap * dest)
|
|
{
|
|
int i, data_offset;
|
|
register int y1;
|
|
unsigned char * sbits;
|
|
|
|
//mprintf( 0, "SVGA RLE!\n" );
|
|
|
|
data_offset = 1;
|
|
if (src->bm_flags & BM_FLAG_RLE_BIG)
|
|
data_offset = 2;
|
|
|
|
sbits = &src->bm_data[4 + (src->bm_h*data_offset)];
|
|
for (i=0; i<sy; i++ )
|
|
sbits += (int)(INTEL_SHORT(src->bm_data[4+(i*data_offset)]));
|
|
|
|
for (y1=0; y1 < h; y1++ ) {
|
|
gr_rle_expand_scanline_generic( dest, dx, dy+y1, sbits, sx, sx+w-1 );
|
|
if ( src->bm_flags & BM_FLAG_RLE_BIG )
|
|
sbits += (int)INTEL_SHORT(*((short *)&(src->bm_data[4+((y1+sy)*data_offset)])));
|
|
else
|
|
sbits += (int)src->bm_data[4+y1+sy];
|
|
}
|
|
|
|
}
|
|
|
|
void gr_bm_ubitblt0xm_rle(int w, int h, int dx, int dy, int sx, int sy, grs_bitmap * src, grs_bitmap * dest)
|
|
{
|
|
int i, data_offset;
|
|
register int y1;
|
|
unsigned char * sbits;
|
|
|
|
//mprintf( 0, "SVGA RLE!\n" );
|
|
|
|
data_offset = 1;
|
|
if (src->bm_flags & BM_FLAG_RLE_BIG)
|
|
data_offset = 2;
|
|
|
|
sbits = &src->bm_data[4 + (src->bm_h*data_offset)];
|
|
for (i=0; i<sy; i++ )
|
|
sbits += (int)(INTEL_SHORT(src->bm_data[4+(i*data_offset)]));
|
|
|
|
for (y1=0; y1 < h; y1++ ) {
|
|
gr_rle_expand_scanline_generic_masked( dest, dx, dy+y1, sbits, sx, sx+w-1 );
|
|
if ( src->bm_flags & BM_FLAG_RLE_BIG )
|
|
sbits += (int)INTEL_SHORT(*((short *)&(src->bm_data[4+((y1+sy)*data_offset)])));
|
|
else
|
|
sbits += (int)src->bm_data[4+y1+sy];
|
|
}
|
|
|
|
}
|
|
|
|
void gr_bm_ubitblt(int w, int h, int dx, int dy, int sx, int sy, grs_bitmap * src, grs_bitmap * dest)
|
|
{
|
|
register int x1, y1;
|
|
|
|
if ( (src->bm_type == BM_LINEAR) && (dest->bm_type == BM_LINEAR ))
|
|
{
|
|
if ( src->bm_flags & BM_FLAG_RLE )
|
|
gr_bm_ubitblt00_rle( w, h, dx, dy, sx, sy, src, dest );
|
|
else
|
|
gr_bm_ubitblt00( w, h, dx, dy, sx, sy, src, dest );
|
|
return;
|
|
}
|
|
|
|
#ifdef OGL
|
|
if ( (src->bm_type == BM_LINEAR) && (dest->bm_type == BM_OGL ))
|
|
{
|
|
ogl_ubitblt(w, h, dx, dy, sx, sy, src, dest);
|
|
return;
|
|
}
|
|
if ( (src->bm_type == BM_OGL) && (dest->bm_type == BM_LINEAR ))
|
|
{
|
|
return;
|
|
}
|
|
if ( (src->bm_type == BM_OGL) && (dest->bm_type == BM_OGL ))
|
|
{
|
|
return;
|
|
}
|
|
#endif
|
|
|
|
if ( (src->bm_flags & BM_FLAG_RLE ) && (src->bm_type == BM_LINEAR) ) {
|
|
gr_bm_ubitblt0x_rle(w, h, dx, dy, sx, sy, src, dest );
|
|
return;
|
|
}
|
|
|
|
for (y1=0; y1 < h; y1++ ) {
|
|
for (x1=0; x1 < w; x1++ ) {
|
|
gr_bm_pixel( dest, dx+x1, dy+y1, gr_gpixel(src,sx+x1,sy+y1) );
|
|
}
|
|
}
|
|
}
|
|
|
|
void gr_bm_bitblt(int w, int h, int dx, int dy, int sx, int sy, grs_bitmap * src, grs_bitmap * dest)
|
|
{
|
|
int dx1=dx, dx2=dx+dest->bm_w-1;
|
|
int dy1=dy, dy2=dy+dest->bm_h-1;
|
|
|
|
int sx1=sx, sx2=sx+src->bm_w-1;
|
|
int sy1=sy, sy2=sy+src->bm_h-1;
|
|
|
|
if ((dx1 >= dest->bm_w ) || (dx2 < 0)) return;
|
|
if ((dy1 >= dest->bm_h ) || (dy2 < 0)) return;
|
|
if ( dx1 < 0 ) { sx1 += -dx1; dx1 = 0; }
|
|
if ( dy1 < 0 ) { sy1 += -dy1; dy1 = 0; }
|
|
if ( dx2 >= dest->bm_w ) { dx2 = dest->bm_w-1; }
|
|
if ( dy2 >= dest->bm_h ) { dy2 = dest->bm_h-1; }
|
|
|
|
if ((sx1 >= src->bm_w ) || (sx2 < 0)) return;
|
|
if ((sy1 >= src->bm_h ) || (sy2 < 0)) return;
|
|
if ( sx1 < 0 ) { dx1 += -sx1; sx1 = 0; }
|
|
if ( sy1 < 0 ) { dy1 += -sy1; sy1 = 0; }
|
|
if ( sx2 >= src->bm_w ) { sx2 = src->bm_w-1; }
|
|
if ( sy2 >= src->bm_h ) { sy2 = src->bm_h-1; }
|
|
|
|
// Draw bitmap bm[x,y] into (dx1,dy1)-(dx2,dy2)
|
|
if ( dx2-dx1+1 < w )
|
|
w = dx2-dx1+1;
|
|
if ( dy2-dy1+1 < h )
|
|
h = dy2-dy1+1;
|
|
if ( sx2-sx1+1 < w )
|
|
w = sx2-sx1+1;
|
|
if ( sy2-sy1+1 < h )
|
|
h = sy2-sy1+1;
|
|
|
|
gr_bm_ubitblt(w,h, dx1, dy1, sx1, sy1, src, dest );
|
|
}
|
|
|
|
void gr_ubitmap( int x, int y, grs_bitmap *bm )
|
|
{
|
|
int source, dest;
|
|
|
|
source = bm->bm_type;
|
|
dest = TYPE;
|
|
|
|
if (source==BM_LINEAR) {
|
|
switch( dest )
|
|
{
|
|
case BM_LINEAR:
|
|
if ( bm->bm_flags & BM_FLAG_RLE )
|
|
gr_bm_ubitblt00_rle(bm->bm_w, bm->bm_h, x, y, 0, 0, bm, &grd_curcanv->cv_bitmap );
|
|
else
|
|
gr_ubitmap00( x, y, bm );
|
|
return;
|
|
#ifdef OGL
|
|
case BM_OGL:
|
|
ogl_ubitmapm(x,y,bm);
|
|
return;
|
|
#endif
|
|
default:
|
|
gr_ubitmap012( x, y, bm );
|
|
return;
|
|
}
|
|
} else {
|
|
gr_ubitmapGENERIC(x, y, bm);
|
|
}
|
|
}
|
|
|
|
|
|
void gr_ubitmapm( int x, int y, grs_bitmap *bm )
|
|
{
|
|
int source, dest;
|
|
|
|
source = bm->bm_type;
|
|
dest = TYPE;
|
|
|
|
if (source==BM_LINEAR) {
|
|
switch( dest )
|
|
{
|
|
case BM_LINEAR:
|
|
if ( bm->bm_flags & BM_FLAG_RLE )
|
|
gr_bm_ubitblt00m_rle(bm->bm_w, bm->bm_h, x, y, 0, 0, bm, &grd_curcanv->cv_bitmap );
|
|
else
|
|
gr_ubitmap00m( x, y, bm );
|
|
return;
|
|
#ifdef OGL
|
|
case BM_OGL:
|
|
ogl_ubitmapm(x,y,bm);
|
|
return;
|
|
#endif
|
|
default:
|
|
gr_ubitmap012m( x, y, bm );
|
|
return;
|
|
}
|
|
} else {
|
|
gr_ubitmapGENERICm(x, y, bm);
|
|
}
|
|
}
|
|
|
|
|
|
void gr_bitmapm( int x, int y, grs_bitmap *bm )
|
|
{
|
|
int dx1=x, dx2=x+bm->bm_w-1;
|
|
int dy1=y, dy2=y+bm->bm_h-1;
|
|
int sx=0, sy=0;
|
|
|
|
if ((dx1 >= grd_curcanv->cv_bitmap.bm_w ) || (dx2 < 0)) return;
|
|
if ((dy1 >= grd_curcanv->cv_bitmap.bm_h) || (dy2 < 0)) return;
|
|
if ( dx1 < 0 ) { sx = -dx1; dx1 = 0; }
|
|
if ( dy1 < 0 ) { sy = -dy1; dy1 = 0; }
|
|
if ( dx2 >= grd_curcanv->cv_bitmap.bm_w ) { dx2 = grd_curcanv->cv_bitmap.bm_w-1; }
|
|
if ( dy2 >= grd_curcanv->cv_bitmap.bm_h ) { dy2 = grd_curcanv->cv_bitmap.bm_h-1; }
|
|
|
|
// Draw bitmap bm[x,y] into (dx1,dy1)-(dx2,dy2)
|
|
|
|
if ( (bm->bm_type == BM_LINEAR) && (grd_curcanv->cv_bitmap.bm_type == BM_LINEAR ))
|
|
{
|
|
if ( bm->bm_flags & BM_FLAG_RLE )
|
|
gr_bm_ubitblt00m_rle(dx2-dx1+1,dy2-dy1+1, dx1, dy1, sx, sy, bm, &grd_curcanv->cv_bitmap );
|
|
else
|
|
gr_bm_ubitblt00m(dx2-dx1+1,dy2-dy1+1, dx1, dy1, sx, sy, bm, &grd_curcanv->cv_bitmap );
|
|
return;
|
|
}
|
|
|
|
gr_bm_ubitbltm(dx2-dx1+1,dy2-dy1+1, dx1, dy1, sx, sy, bm, &grd_curcanv->cv_bitmap );
|
|
|
|
}
|
|
|
|
void gr_bm_ubitbltm(int w, int h, int dx, int dy, int sx, int sy, grs_bitmap * src, grs_bitmap * dest)
|
|
{
|
|
register int x1, y1;
|
|
ubyte c;
|
|
|
|
#ifdef OGL
|
|
if ( (src->bm_type == BM_LINEAR) && (dest->bm_type == BM_OGL ))
|
|
{
|
|
ogl_ubitblt(w, h, dx, dy, sx, sy, src, dest);
|
|
return;
|
|
}
|
|
if ( (src->bm_type == BM_OGL) && (dest->bm_type == BM_LINEAR ))
|
|
{
|
|
return;
|
|
}
|
|
if ( (src->bm_type == BM_OGL) && (dest->bm_type == BM_OGL ))
|
|
{
|
|
return;
|
|
}
|
|
#endif
|
|
|
|
for (y1=0; y1 < h; y1++ ) {
|
|
for (x1=0; x1 < w; x1++ ) {
|
|
if ((c=gr_gpixel(src,sx+x1,sy+y1))!=TRANSPARENCY_COLOR)
|
|
gr_bm_pixel( dest, dx+x1, dy+y1,c );
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
// rescalling bitmaps, 10/14/99 Jan Bobrowski jb@wizard.ae.krakow.pl
|
|
|
|
inline void scale_line(unsigned char *in, unsigned char *out, int ilen, int olen)
|
|
{
|
|
int a = olen/ilen, b = olen%ilen;
|
|
int c = 0, i;
|
|
unsigned char *end = out + olen;
|
|
while(out<end) {
|
|
i = a;
|
|
c += b;
|
|
if(c >= ilen) {
|
|
c -= ilen;
|
|
goto inside;
|
|
}
|
|
while(--i>=0) {
|
|
inside:
|
|
*out++ = *in;
|
|
}
|
|
in++;
|
|
}
|
|
}
|
|
|
|
void gr_bitmap_scale_to(grs_bitmap *src, grs_bitmap *dst)
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{
|
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unsigned char *s = src->bm_data;
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|
unsigned char *d = dst->bm_data;
|
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int h = src->bm_h;
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int a = dst->bm_h/h, b = dst->bm_h%h;
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|
int c = 0, i, y;
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|
|
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for(y=0; y<h; y++) {
|
|
i = a;
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|
c += b;
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|
if(c >= h) {
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|
c -= h;
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|
goto inside;
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}
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while(--i>=0) {
|
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inside:
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scale_line(s, d, src->bm_w, dst->bm_w);
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d += dst->bm_rowsize;
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|
}
|
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s += src->bm_rowsize;
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|
}
|
|
}
|
|
|
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void show_fullscr(grs_bitmap *bm)
|
|
{
|
|
grs_bitmap * const scr = &grd_curcanv->cv_bitmap;
|
|
|
|
#ifdef OGL
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if(bm->bm_type == BM_LINEAR && scr->bm_type == BM_OGL &&
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bm->bm_w <= grd_curscreen->sc_w && bm->bm_h <= grd_curscreen->sc_h) // only scale with OGL if bitmap is not bigger than screen size
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{
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ogl_ubitmapm_cs(0,0,-1,-1,bm,-1,F1_0);//use opengl to scale, faster and saves ram. -MPM
|
|
return;
|
|
}
|
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#endif
|
|
if(scr->bm_type != BM_LINEAR) {
|
|
grs_bitmap *tmp = gr_create_bitmap(scr->bm_w, scr->bm_h);
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|
gr_bitmap_scale_to(bm, tmp);
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|
gr_bitmap(0, 0, tmp);
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|
gr_free_bitmap(tmp);
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|
return;
|
|
}
|
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gr_bitmap_scale_to(bm, scr);
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|
}
|