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sw_engine texmap: code refactoring.
Unrolled the blending stages by applying macro magics. I know this is a bit bad for code readibility but good for the performance and the optimal LOC.
This commit is contained in:
Hermet Park
Hermet Park
parent
aff755aeb5
commit
2ca6f76d91
1 changed files with 123 additions and 96 deletions
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@ -43,46 +43,9 @@ static float dudx, dvdx;
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static float dxdya, dxdyb, dudya, dvdya;
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static float xa, xb, ua, va;
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static void _rasterPolygonImageSegment(SwSurface* surface, const SwImage* image, const SwBBox& region, int ystart, int yend, uint32_t opacity, uint32_t (*blendMethod)(uint32_t))
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{
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#define RASTER_COMMON() \
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uu = (int) u; \
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vv = (int) v; \
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/* FIXME: sometimes u and v are < 0 - don'tc crash */ \
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if (uu < 0) uu = 0;\
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if (vv < 0) vv = 0; \
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\
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/* Range exception handling */ \
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/* OPTIMIZE ME, handle in advance? */ \
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if (uu >= sw) uu = sw - 1; \
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if (vv >= sh) vv = sh - 1; \
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\
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ar = (int)(255 * (1 - modff(u, &iptr))); \
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ab = (int)(255 * (1 - modff(v, &iptr))); \
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iru = uu + 1; \
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irv = vv + 1; \
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px = *(sbuf + (vv * sw) + uu); \
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\
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/* horizontal interpolate */ \
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if (iru < sw) { \
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/* right pixel */ \
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int px2 = *(sbuf + (vv * sw) + iru); \
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px = _interpolate(ar, px, px2); \
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} \
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/* vertical interpolate */ \
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if (irv < sh) { \
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/* bottom pixel */ \
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int px2 = *(sbuf + (irv * sw) + uu); \
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\
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/* horizontal interpolate */ \
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if (iru < sw) { \
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/* bottom right pixel */ \
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int px3 = *(sbuf + (irv * sw) + iru);\
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px2 = _interpolate(ar, px2, px3); \
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} \
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px = _interpolate(ab, px, px2); \
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}
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static inline void _rasterRGBA(SwSurface* surface, const SwImage* image, const SwBBox& region, int ystart, int yend, TVG_UNUSED uint32_t opacity, TVG_UNUSED uint32_t (*blendMethod)(uint32_t))
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{
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float _dudx = dudx, _dvdx = dvdx;
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float _dxdya = dxdya, _dxdyb = dxdyb, _dudya = dudya, _dvdya = dvdya;
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float _xa = xa, _xb = xb, _ua = ua, _va = va;
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@ -125,57 +88,64 @@ static void _rasterPolygonImageSegment(SwSurface* surface, const SwImage* image,
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x = x1;
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if (blendMethod) {
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TVGLOG("SW_ENGINE", "Transformed Masked Image");
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auto cmp = &surface->compositor->image.data[y * surface->compositor->image.stride + x1];
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if (opacity == 255) {
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//Draw horizontal line
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while (x++ < x2) {
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RASTER_COMMON();
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auto src = ALPHA_BLEND(px, blendMethod(*cmp));
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*buf = src + ALPHA_BLEND(*buf, surface->blender.ialpha(src));
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++cmp;
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++buf;
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//Step UV horizontally
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u += _dudx;
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v += _dvdx;
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}
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} else {
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//Draw horizontal line
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while (x++ < x2) {
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RASTER_COMMON();
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auto src = ALPHA_BLEND(px, _multiplyAlpha(opacity, blendMethod(*cmp)));
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*buf = src + ALPHA_BLEND(*buf, surface->blender.ialpha(src));
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++buf;
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++cmp;
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//Step UV horizontally
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u += _dudx;
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v += _dvdx;
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}
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#ifdef TEXMAP_MAKSING
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auto cmp = &surface->compositor->image.data[y * surface->compositor->image.stride + x1];
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#endif
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//Draw horizontal line
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while (x++ < x2) {
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uu = (int) u;
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vv = (int) v;
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/* FIXME: sometimes u and v are < 0 - don'tc crash */
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if (uu < 0) uu = 0;
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if (vv < 0) vv = 0;
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/* Range exception handling */
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/* OPTIMIZE ME, handle in advance? */
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if (uu >= sw) uu = sw - 1;
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if (vv >= sh) vv = sh - 1;
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ar = (int)(255 * (1 - modff(u, &iptr)));
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ab = (int)(255 * (1 - modff(v, &iptr)));
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iru = uu + 1;
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irv = vv + 1;
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px = *(sbuf + (vv * sw) + uu);
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/* horizontal interpolate */
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if (iru < sw) {
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/* right pixel */
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int px2 = *(sbuf + (vv * sw) + iru);
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px = _interpolate(ar, px, px2);
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}
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} else {
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if (opacity == 255) {
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//Draw horizontal line
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while (x++ < x2) {
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RASTER_COMMON();
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*buf = px + ALPHA_BLEND(*buf, surface->blender.ialpha(px));
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++buf;
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//Step UV horizontally
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u += _dudx;
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v += _dvdx;
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}
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} else {
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//Draw horizontal line
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while (x++ < x2) {
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RASTER_COMMON();
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auto src = ALPHA_BLEND(px, opacity);
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*buf = src + ALPHA_BLEND(*buf, surface->blender.ialpha(src));
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++buf;
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//Step UV horizontally
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u += _dudx;
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v += _dvdx;
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/* vertical interpolate */
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if (irv < sh) {
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/* bottom pixel */
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int px2 = *(sbuf + (irv * sw) + uu);
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/* horizontal interpolate */
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if (iru < sw) {
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/* bottom right pixel */
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int px3 = *(sbuf + (irv * sw) + iru);
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px2 = _interpolate(ar, px2, px3);
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}
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px = _interpolate(ab, px, px2);
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}
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#if defined(TEXMAP_MAKSING) && defined(TEXTMAP_TRANSLUCENT)
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auto src = ALPHA_BLEND(px, _multiplyAlpha(opacity, blendMethod(*cmp)));
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#elif defined(TEXMAP_MAKSING)
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auto src = ALPHA_BLEND(px, blendMethod(*cmp));
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#elif defined(TEXTMAP_TRANSLUCENT)
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auto src = ALPHA_BLEND(px, opacity);
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#else
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auto src = px;
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#endif
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*buf = src + ALPHA_BLEND(*buf, surface->blender.ialpha(src));
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++buf;
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#ifdef TEXMAP_MAKSING
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++cmp;
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#endif
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//Step UV horizontally
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u += _dudx;
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v += _dvdx;
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}
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next:
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//Step along both edges
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@ -185,11 +155,42 @@ next:
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_va += _dvdya;
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y++;
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}
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xa = _xa;
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xb = _xb;
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ua = _ua;
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va = _va;
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}
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xa = _xa;
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xb = _xb;
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ua = _ua;
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va = _va;
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}
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static inline void _rasterPolygonImageSegment(SwSurface* surface, const SwImage* image, const SwBBox& region, int ystart, int yend, uint32_t opacity, uint32_t (*blendMethod)(uint32_t))
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{
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#define TEXTMAP_TRANSLUCENT
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#define TEXMAP_MAKSING
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_rasterRGBA(surface, image, region, ystart, yend, opacity, blendMethod);
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#undef TEXMAP_MASKING
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#undef TEXTMAP_TRANSLUCENT
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}
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static inline void _rasterPolygonImageSegment(SwSurface* surface, const SwImage* image, const SwBBox& region, int ystart, int yend, uint32_t (*blendMethod)(uint32_t))
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{
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#define TEXMAP_MAKSING
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_rasterRGBA(surface, image, region, ystart, yend, 255, nullptr);
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#undef TEXMAP_MASKING
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}
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static inline void _rasterPolygonImageSegment(SwSurface* surface, const SwImage* image, const SwBBox& region, int ystart, int yend, uint32_t opacity)
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{
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#define TEXTMAP_TRANSLUCENT
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_rasterRGBA(surface, image, region, ystart, yend, opacity, nullptr);
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#undef TEXTMAP_TRANSLUCENT
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}
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static inline void _rasterPolygonImageSegment(SwSurface* surface, const SwImage* image, const SwBBox& region, int ystart, int yend)
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{
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_rasterRGBA(surface, image, region, ystart, yend, 255, nullptr);
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}
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@ -279,7 +280,15 @@ static void _rasterPolygonImage(SwSurface* surface, const SwImage* image, const
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// Set right edge X-slope and perform subpixel pre-stepping
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dxdyb = dxdy[0];
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xb = x[0] + dy * dxdyb + (off_y * dxdyb);
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_rasterPolygonImageSegment(surface, image, region, yi[0], yi[1], opacity, blendMethod);
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if (blendMethod) {
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if (opacity == 255) _rasterPolygonImageSegment(surface, image, region, yi[0], yi[1], blendMethod);
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else _rasterPolygonImageSegment(surface, image, region, yi[0], yi[1], opacity, blendMethod);
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} else {
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if (opacity == 255) _rasterPolygonImageSegment(surface, image, region, yi[0], yi[1]);
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else _rasterPolygonImageSegment(surface, image, region, yi[0], yi[1], opacity);
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}
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upper = true;
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}
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//Draw lower segment if possibly visible
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@ -293,7 +302,13 @@ static void _rasterPolygonImage(SwSurface* surface, const SwImage* image, const
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// Set right edge X-slope and perform subpixel pre-stepping
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dxdyb = dxdy[2];
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xb = x[1] + (1 - (y[1] - yi[1])) * dxdyb + (off_y * dxdyb);
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_rasterPolygonImageSegment(surface, image, region, yi[1], yi[2], opacity, blendMethod);
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if (blendMethod) {
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if (opacity == 255) _rasterPolygonImageSegment(surface, image, region, yi[1], yi[2], blendMethod);
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else _rasterPolygonImageSegment(surface, image, region, yi[1], yi[2], opacity, blendMethod);
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} else {
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if (opacity == 255) _rasterPolygonImageSegment(surface, image, region, yi[1], yi[2]);
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else _rasterPolygonImageSegment(surface, image, region, yi[1], yi[2], opacity);
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}
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}
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//Longer edge is on the right side
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} else {
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@ -316,7 +331,13 @@ static void _rasterPolygonImage(SwSurface* surface, const SwImage* image, const
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ua = u[0] + dy * dudya + (off_y * dudya);
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va = v[0] + dy * dvdya + (off_y * dvdya);
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_rasterPolygonImageSegment(surface, image, region, yi[0], yi[1], opacity, blendMethod);
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if (blendMethod) {
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if (opacity == 255) _rasterPolygonImageSegment(surface, image, region, yi[0], yi[1], blendMethod);
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else _rasterPolygonImageSegment(surface, image, region, yi[0], yi[1], opacity, blendMethod);
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} else {
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if (opacity == 255) _rasterPolygonImageSegment(surface, image, region, yi[0], yi[1]);
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else _rasterPolygonImageSegment(surface, image, region, yi[0], yi[1], opacity);
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}
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upper = true;
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}
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@ -334,7 +355,13 @@ static void _rasterPolygonImage(SwSurface* surface, const SwImage* image, const
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ua = u[1] + dy * dudya + (off_y * dudya);
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va = v[1] + dy * dvdya + (off_y * dvdya);
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_rasterPolygonImageSegment(surface, image, region, yi[1], yi[2], opacity, blendMethod);
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if (blendMethod) {
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if (opacity == 255) _rasterPolygonImageSegment(surface, image, region, yi[1], yi[2], blendMethod);
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else _rasterPolygonImageSegment(surface, image, region, yi[1], yi[2], opacity, blendMethod);
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} else {
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if (opacity == 255) _rasterPolygonImageSegment(surface, image, region, yi[1], yi[2]);
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else _rasterPolygonImageSegment(surface, image, region, yi[1], yi[2], opacity);
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}
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}
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}
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}
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