gfx_put_trans.c

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/* TRANS drawing method for PUT statement */

#include "fb_gfx.h"


#ifdef HOST_X86

#include "x86/fb_gfx_mmx.h"

extern void fb_hPutTrans1MMX(unsigned char *src, unsigned char *dest, int w, int h, int src_pitch, int dest_pitch, int alpha, BLENDER *blender, void *param);
extern void fb_hPutTrans2MMX(unsigned char *src, unsigned char *dest, int w, int h, int src_pitch, int dest_pitch, int alpha, BLENDER *blender, void *param);
extern void fb_hPutTrans4MMX(unsigned char *src, unsigned char *dest, int w, int h, int src_pitch, int dest_pitch, int alpha, BLENDER *blender, void *param);

#endif


/*:::::*/
void fb_hPutTrans1C(unsigned char *src, unsigned char *dest, int w, int h, int src_pitch, int dest_pitch, int alpha, BLENDER *blender, void *param)
{
        unsigned char *s = (unsigned char *)src;
        unsigned char *d;
        int x;
        
        src_pitch -= w;
        for (; h; h--) {
                d = (unsigned char *)dest;
                for (x = w; x; x--) {
                        if (*s)
                                *d = (unsigned int)*s;
                        s++;
                        d++;
                }
                s += src_pitch;
                dest += dest_pitch;
        }
}


/*:::::*/
static void fb_hPutTrans2C(unsigned char *src, unsigned char *dest, int w, int h, int src_pitch, int dest_pitch, int alpha, BLENDER *blender, void *param)
{
        unsigned short *s = (unsigned short *)src;
        unsigned short *d;
        int x;
        
        src_pitch = (src_pitch >> 1) - w;
        for (; h; h--) {
                d = (unsigned short *)dest;
                for (x = w; x; x--) {
                        if (*s != MASK_COLOR_16)
                                *d = (unsigned short)*s;
                        s++;
                        d++;
                }
                s += src_pitch;
                dest += dest_pitch;
        }
}


/*:::::*/
static void fb_hPutTrans4C(unsigned char *src, unsigned char *dest, int w, int h, int src_pitch, int dest_pitch, int alpha, BLENDER *blender, void *param)
{
        unsigned int *s = (unsigned int *)src;
        unsigned int *d, c;
        int x;
        
        src_pitch = (src_pitch >> 2) - w;
        for (; h; h--) {
                d = (unsigned int *)dest;
                for (x = w; x; x--) {
                        c = *s & 0x00FFFFFF;
                        if (c != MASK_COLOR_32)
                                *d = c;
                        s++;
                        d++;
                }
                s += src_pitch;
                dest += dest_pitch;
        }
}


/*:::::*/
void fb_hPutTrans(unsigned char *src, unsigned char *dest, int w, int h, int src_pitch, int dest_pitch, int alpha, BLENDER *blender, void *param)
{
        static PUTTER *all_putters[] = {
                fb_hPutTrans1C, fb_hPutTrans2C, NULL, fb_hPutTrans4C,
#ifdef HOST_X86
                fb_hPutTrans1MMX, fb_hPutTrans2MMX, NULL, fb_hPutTrans4MMX,
#endif
        };
        PUTTER *putter;
        FB_GFXCTX *context = fb_hGetContext();
        
        if (!context->putter[PUT_MODE_TRANS]) {
#ifdef HOST_X86
                if (__fb_gfx->flags & HAS_MMX)
                        context->putter[PUT_MODE_TRANS] = &all_putters[4];
                else
#endif
                        context->putter[PUT_MODE_TRANS] = &all_putters[0];
        }
        putter = context->putter[PUT_MODE_TRANS][context->target_bpp - 1];
        
        putter(src, dest, w, h, src_pitch, dest_pitch, alpha, blender, param);
}