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framebuffer: make blit2FB usable for tuxtxt

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This commit is contained in:
Stefan Seyfried
2012-03-11 18:23:46 +01:00
parent 26f85435a8
commit 47f09004d8
3 changed files with 38 additions and 11 deletions
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37
src/driver/framebuffer_spark.cpp
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@@ -371,6 +371,11 @@ fb_pixel_t * CFrameBuffer::getFrameBufferPointer() const
return (fb_pixel_t *) virtual_fb;
}
fb_pixel_t * CFrameBuffer::getBackBufferPointer() const
{
return backbuffer;
}
bool CFrameBuffer::getActive() const
{
return (active || (virtual_fb != NULL));
@@ -1430,20 +1435,36 @@ void * CFrameBuffer::convertRGBA2FB(unsigned char *rgbbuff, unsigned long x, uns
return int_convertRGB2FB(rgbbuff, x, y, 0, true);
}
void CFrameBuffer::blit2FB(void *fbbuff, uint32_t width, uint32_t height, uint32_t xoff, uint32_t yoff, uint32_t xp, uint32_t yp, bool transp)
void CFrameBuffer::blit2FB(void *fbbuff, uint32_t width, uint32_t height, uint32_t xoff, uint32_t yoff, uint32_t xp, uint32_t yp, bool transp, bool scale)
{
int x = scaleX(xoff);
int y = scaleY(yoff);
int dw = scaleX(width - xp);
int dh = scaleY(height - yp);
size_t mem_sz = width * height * sizeof(fb_pixel_t);
int x, y, dw, dh;
if (scale)
{
x = scaleX(xoff);
y = scaleY(yoff);
dw = scaleX(width - xp);
dh = scaleY(height - yp);
}
else
{
x = xoff;
y = yoff;
dw = width - xp;
dh = height - yp;
}
memcpy(backbuffer, fbbuff, mem_sz);
size_t mem_sz = width * height * sizeof(fb_pixel_t);
unsigned long ulFlags = 0;
if (transp) /* transp == true means: color "0x0" is transparent (??) */
ulFlags = BLT_OP_FLAGS_BLEND_SRC_ALPHA|BLT_OP_FLAGS_BLEND_DST_MEMORY; // we need alpha blending
if (fbbuff != backbuffer)
memmove(backbuffer, fbbuff, mem_sz);
STMFBIO_BLT_EXTERN_DATA blt_data;
memset(&blt_data, 0, sizeof(STMFBIO_BLT_EXTERN_DATA));
blt_data.operation = BLT_OP_COPY;
blt_data.ulFlags = BLT_OP_FLAGS_BLEND_SRC_ALPHA | BLT_OP_FLAGS_BLEND_DST_MEMORY; // we need alpha blending
blt_data.ulFlags = ulFlags;
blt_data.srcOffset = 0;
blt_data.srcPitch = width * 4;
blt_data.dstOffset = 0;