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sw_engine texmap: code refactoring.

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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 2021-11-25 18:31:00 +09:00 • committed by Hermet Park
parent aff755aeb5
commit 2ca6f76d91
1 changed files with 123 additions and 96 deletions
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219
src/lib/sw_engine/tvgSwRasterTexmap.h
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@ -43,46 +43,9 @@ static float dudx, dvdx;
static float dxdya, dxdyb, dudya, dvdya; static float dxdya, dxdyb, dudya, dvdya;
static float xa, xb, ua, va; static float xa, xb, ua, va;
static void _rasterPolygonImageSegment(SwSurface* surface, const SwImage* image, const SwBBox& region, int ystart, int yend, uint32_t opacity, uint32_t (*blendMethod)(uint32_t))
{
#define RASTER_COMMON() \
uu = (int) u; \
vv = (int) v; \
/* FIXME: sometimes u and v are < 0 - don'tc crash */ \
if (uu < 0) uu = 0;\
if (vv < 0) vv = 0; \
\
/* Range exception handling */ \
/* OPTIMIZE ME, handle in advance? */ \
if (uu >= sw) uu = sw - 1; \
if (vv >= sh) vv = sh - 1; \
\
ar = (int)(255 * (1 - modff(u, &iptr))); \
ab = (int)(255 * (1 - modff(v, &iptr))); \
iru = uu + 1; \
irv = vv + 1; \
px = *(sbuf + (vv * sw) + uu); \
\
/* horizontal interpolate */ \
if (iru < sw) { \
/* right pixel */ \
int px2 = *(sbuf + (vv * sw) + iru); \
px = _interpolate(ar, px, px2); \
} \
/* vertical interpolate */ \
if (irv < sh) { \
/* bottom pixel */ \
int px2 = *(sbuf + (irv * sw) + uu); \
\
/* horizontal interpolate */ \
if (iru < sw) { \
/* bottom right pixel */ \
int px3 = *(sbuf + (irv * sw) + iru);\
px2 = _interpolate(ar, px2, px3); \
} \
px = _interpolate(ab, px, px2); \
}
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))
{
float _dudx = dudx, _dvdx = dvdx; float _dudx = dudx, _dvdx = dvdx;
float _dxdya = dxdya, _dxdyb = dxdyb, _dudya = dudya, _dvdya = dvdya; float _dxdya = dxdya, _dxdyb = dxdyb, _dudya = dudya, _dvdya = dvdya;
float _xa = xa, _xb = xb, _ua = ua, _va = va; float _xa = xa, _xb = xb, _ua = ua, _va = va;
@ -125,57 +88,64 @@ static void _rasterPolygonImageSegment(SwSurface* surface, const SwImage* image,
x = x1; x = x1;
if (blendMethod) { #ifdef TEXMAP_MAKSING
TVGLOG("SW_ENGINE", "Transformed Masked Image"); auto cmp = &surface->compositor->image.data[y * surface->compositor->image.stride + x1];
auto cmp = &surface->compositor->image.data[y * surface->compositor->image.stride + x1]; #endif
if (opacity == 255) { //Draw horizontal line
//Draw horizontal line while (x++ < x2) {
while (x++ < x2) { uu = (int) u;
RASTER_COMMON(); vv = (int) v;
auto src = ALPHA_BLEND(px, blendMethod(*cmp)); /* FIXME: sometimes u and v are < 0 - don'tc crash */
*buf = src + ALPHA_BLEND(*buf, surface->blender.ialpha(src)); if (uu < 0) uu = 0;
++cmp; if (vv < 0) vv = 0;
++buf;
//Step UV horizontally /* Range exception handling */
u += _dudx; /* OPTIMIZE ME, handle in advance? */
v += _dvdx; if (uu >= sw) uu = sw - 1;
} if (vv >= sh) vv = sh - 1;
} else {
//Draw horizontal line ar = (int)(255 * (1 - modff(u, &iptr)));
while (x++ < x2) { ab = (int)(255 * (1 - modff(v, &iptr)));
RASTER_COMMON(); iru = uu + 1;
auto src = ALPHA_BLEND(px, _multiplyAlpha(opacity, blendMethod(*cmp))); irv = vv + 1;
*buf = src + ALPHA_BLEND(*buf, surface->blender.ialpha(src)); px = *(sbuf + (vv * sw) + uu);
++buf;
++cmp; /* horizontal interpolate */
//Step UV horizontally if (iru < sw) {
u += _dudx; /* right pixel */
v += _dvdx; int px2 = *(sbuf + (vv * sw) + iru);
} px = _interpolate(ar, px, px2);
} }
} else { /* vertical interpolate */
if (opacity == 255) { if (irv < sh) {
//Draw horizontal line /* bottom pixel */
while (x++ < x2) { int px2 = *(sbuf + (irv * sw) + uu);
RASTER_COMMON();
*buf = px + ALPHA_BLEND(*buf, surface->blender.ialpha(px)); /* horizontal interpolate */
++buf; if (iru < sw) {
//Step UV horizontally /* bottom right pixel */
u += _dudx; int px3 = *(sbuf + (irv * sw) + iru);
v += _dvdx; px2 = _interpolate(ar, px2, px3);
}
} else {
//Draw horizontal line
while (x++ < x2) {
RASTER_COMMON();
auto src = ALPHA_BLEND(px, opacity);
*buf = src + ALPHA_BLEND(*buf, surface->blender.ialpha(src));
++buf;
//Step UV horizontally
u += _dudx;
v += _dvdx;
} }
px = _interpolate(ab, px, px2);
} }
#if defined(TEXMAP_MAKSING) && defined(TEXTMAP_TRANSLUCENT)
auto src = ALPHA_BLEND(px, _multiplyAlpha(opacity, blendMethod(*cmp)));
#elif defined(TEXMAP_MAKSING)
auto src = ALPHA_BLEND(px, blendMethod(*cmp));
#elif defined(TEXTMAP_TRANSLUCENT)
auto src = ALPHA_BLEND(px, opacity);
#else
auto src = px;
#endif
*buf = src + ALPHA_BLEND(*buf, surface->blender.ialpha(src));
++buf;
#ifdef TEXMAP_MAKSING
++cmp;
#endif
//Step UV horizontally
u += _dudx;
v += _dvdx;
} }
next: next:
//Step along both edges //Step along both edges
@ -185,11 +155,42 @@ next:
_va += _dvdya; _va += _dvdya;
y++; y++;
} }
xa = _xa; xa = _xa;
xb = _xb; xb = _xb;
ua = _ua; ua = _ua;
va = _va; va = _va;
}
static inline void _rasterPolygonImageSegment(SwSurface* surface, const SwImage* image, const SwBBox& region, int ystart, int yend, uint32_t opacity, uint32_t (*blendMethod)(uint32_t))
{
#define TEXTMAP_TRANSLUCENT
#define TEXMAP_MAKSING
_rasterRGBA(surface, image, region, ystart, yend, opacity, blendMethod);
#undef TEXMAP_MASKING
#undef TEXTMAP_TRANSLUCENT
}
static inline void _rasterPolygonImageSegment(SwSurface* surface, const SwImage* image, const SwBBox& region, int ystart, int yend, uint32_t (*blendMethod)(uint32_t))
{
#define TEXMAP_MAKSING
_rasterRGBA(surface, image, region, ystart, yend, 255, nullptr);
#undef TEXMAP_MASKING
}
static inline void _rasterPolygonImageSegment(SwSurface* surface, const SwImage* image, const SwBBox& region, int ystart, int yend, uint32_t opacity)
{
#define TEXTMAP_TRANSLUCENT
_rasterRGBA(surface, image, region, ystart, yend, opacity, nullptr);
#undef TEXTMAP_TRANSLUCENT
}
static inline void _rasterPolygonImageSegment(SwSurface* surface, const SwImage* image, const SwBBox& region, int ystart, int yend)
{
_rasterRGBA(surface, image, region, ystart, yend, 255, nullptr);
} }
@ -279,7 +280,15 @@ static void _rasterPolygonImage(SwSurface* surface, const SwImage* image, const
// Set right edge X-slope and perform subpixel pre-stepping // Set right edge X-slope and perform subpixel pre-stepping
dxdyb = dxdy[0]; dxdyb = dxdy[0];
xb = x[0] + dy * dxdyb + (off_y * dxdyb); xb = x[0] + dy * dxdyb + (off_y * dxdyb);
_rasterPolygonImageSegment(surface, image, region, yi[0], yi[1], opacity, blendMethod);
if (blendMethod) {
if (opacity == 255) _rasterPolygonImageSegment(surface, image, region, yi[0], yi[1], blendMethod);
else _rasterPolygonImageSegment(surface, image, region, yi[0], yi[1], opacity, blendMethod);
} else {
if (opacity == 255) _rasterPolygonImageSegment(surface, image, region, yi[0], yi[1]);
else _rasterPolygonImageSegment(surface, image, region, yi[0], yi[1], opacity);
}
upper = true; upper = true;
} }
//Draw lower segment if possibly visible //Draw lower segment if possibly visible
@ -293,7 +302,13 @@ static void _rasterPolygonImage(SwSurface* surface, const SwImage* image, const
// Set right edge X-slope and perform subpixel pre-stepping // Set right edge X-slope and perform subpixel pre-stepping
dxdyb = dxdy[2]; dxdyb = dxdy[2];
xb = x[1] + (1 - (y[1] - yi[1])) * dxdyb + (off_y * dxdyb); xb = x[1] + (1 - (y[1] - yi[1])) * dxdyb + (off_y * dxdyb);
_rasterPolygonImageSegment(surface, image, region, yi[1], yi[2], opacity, blendMethod); if (blendMethod) {
if (opacity == 255) _rasterPolygonImageSegment(surface, image, region, yi[1], yi[2], blendMethod);
else _rasterPolygonImageSegment(surface, image, region, yi[1], yi[2], opacity, blendMethod);
} else {
if (opacity == 255) _rasterPolygonImageSegment(surface, image, region, yi[1], yi[2]);
else _rasterPolygonImageSegment(surface, image, region, yi[1], yi[2], opacity);
}
} }
//Longer edge is on the right side //Longer edge is on the right side
} else { } else {
@ -316,7 +331,13 @@ static void _rasterPolygonImage(SwSurface* surface, const SwImage* image, const
ua = u[0] + dy * dudya + (off_y * dudya); ua = u[0] + dy * dudya + (off_y * dudya);
va = v[0] + dy * dvdya + (off_y * dvdya); va = v[0] + dy * dvdya + (off_y * dvdya);
_rasterPolygonImageSegment(surface, image, region, yi[0], yi[1], opacity, blendMethod); if (blendMethod) {
if (opacity == 255) _rasterPolygonImageSegment(surface, image, region, yi[0], yi[1], blendMethod);
else _rasterPolygonImageSegment(surface, image, region, yi[0], yi[1], opacity, blendMethod);
} else {
if (opacity == 255) _rasterPolygonImageSegment(surface, image, region, yi[0], yi[1]);
else _rasterPolygonImageSegment(surface, image, region, yi[0], yi[1], opacity);
}
upper = true; upper = true;
} }
@ -334,7 +355,13 @@ static void _rasterPolygonImage(SwSurface* surface, const SwImage* image, const
ua = u[1] + dy * dudya + (off_y * dudya); ua = u[1] + dy * dudya + (off_y * dudya);
va = v[1] + dy * dvdya + (off_y * dvdya); va = v[1] + dy * dvdya + (off_y * dvdya);
_rasterPolygonImageSegment(surface, image, region, yi[1], yi[2], opacity, blendMethod); if (blendMethod) {
if (opacity == 255) _rasterPolygonImageSegment(surface, image, region, yi[1], yi[2], blendMethod);
else _rasterPolygonImageSegment(surface, image, region, yi[1], yi[2], opacity, blendMethod);
} else {
if (opacity == 255) _rasterPolygonImageSegment(surface, image, region, yi[1], yi[2]);
else _rasterPolygonImageSegment(surface, image, region, yi[1], yi[2], opacity);
}
} }
} }
} }