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sw_engine raster: adding rastering functions for image without transformation

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Added rastering functions for the image (transparent and not) for the fast
track option - identity transform.
This commit is contained in:
Mira Grudzinska 2021-02-04 02:10:14 +01:00 • committed by Hermet Park
parent e154bfb264
commit 46f8945028
1 changed files with 34 additions and 6 deletions
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40
src/lib/sw_engine/tvgSwRaster.cpp
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@ -321,6 +321,22 @@ static bool _rasterSolidRle(SwSurface* surface, SwRleData* rle, uint32_t color)
/* Image */
/************************************************************************/
static bool _rasterTranslucentImageRle(SwSurface* surface, SwRleData* rle, uint32_t *img, uint32_t w, uint32_t h, uint32_t opacity)
{
auto span = rle->spans;
for (uint32_t i = 0; i < rle->size; ++i, ++span) {
auto dst = &surface->buffer[span->y * surface->stride + span->x];
auto src = img + span->x + span->y * w; //TODO: need to use image's stride
for (uint32_t x = 0; x < span->len; ++x, ++dst, ++src) {
auto alpha = ALPHA_MULTIPLY(span->coverage, opacity);
*src = ALPHA_BLEND(*src, alpha);
*dst = *src + ALPHA_BLEND(*dst, 255 - surface->blender.alpha(*src));
}
}
return true;
}
static bool _rasterTranslucentImageRle(SwSurface* surface, SwRleData* rle, uint32_t *img, uint32_t w, uint32_t h, uint32_t opacity, const Matrix* invTransform)
{
@ -344,6 +360,22 @@ static bool _rasterTranslucentImageRle(SwSurface* surface, SwRleData* rle, uint3
}
static bool _rasterImageRle(SwSurface* surface, SwRleData* rle, uint32_t *img, uint32_t w, uint32_t h)
{
auto span = rle->spans;
for (uint32_t i = 0; i < rle->size; ++i, ++span) {
auto dst = &surface->buffer[span->y * surface->stride + span->x];
auto src = img + span->x + span->y * w; //TODO: need to use image's stride
for (uint32_t x = 0; x < span->len; ++x, ++dst, ++src) {
*src = ALPHA_BLEND(*src, span->coverage);
*dst = *src + ALPHA_BLEND(*dst, 255 - surface->blender.alpha(*src));
}
}
return true;
}
static bool _rasterImageRle(SwSurface* surface, SwRleData* rle, uint32_t *img, uint32_t w, uint32_t h, const Matrix* invTransform)
{
auto span = rle->spans;
@ -809,12 +841,8 @@ bool rasterImage(SwSurface* surface, SwImage* image, const Matrix* transform, Sw
//Fast track
if (_identify(transform)) {
//OPTIMIZE ME: Support non transformed image. Only shifted image can use these routines.
#ifdef THORVG_LOG_ENABLED
printf("SW_ENGINE: implementation is missing!\n");
#endif
//if (translucent) return _rasterTranslucentImageRle(surface, image->rle, image->data, image->w, image->h, opacity);
//return _rasterImageRle(surface, image->rle, image->data, image->w, image->h);
return false;
if (translucent) return _rasterTranslucentImageRle(surface, image->rle, image->data, image->w, image->h, opacity);
return _rasterImageRle(surface, image->rle, image->data, image->w, image->h);
} else {
if (translucent) return _rasterTranslucentImageRle(surface, image->rle, image->data, image->w, image->h, opacity, &invTransform);
return _rasterImageRle(surface, image->rle, image->data, image->w, image->h, &invTransform);