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author | Einar Johan Trøan Sømåen | 2012-07-16 13:57:43 +0200 |
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committer | Einar Johan Trøan Sømåen | 2012-07-16 13:57:43 +0200 |
commit | e12bfeef7502e20888a0059288a6de09e95a36f7 (patch) | |
tree | ce1441edf575e3589e34abd0c78abbb20d92d386 /engines | |
parent | e8d3f0b020718ce37be7f8dbe38f1702228a2c7f (diff) | |
download | scummvm-rg350-e12bfeef7502e20888a0059288a6de09e95a36f7.tar.gz scummvm-rg350-e12bfeef7502e20888a0059288a6de09e95a36f7.tar.bz2 scummvm-rg350-e12bfeef7502e20888a0059288a6de09e95a36f7.zip |
WINTERMUTE: Readd const to transparentSurface-shifts, and remove branches for mask-less blit.
Diffstat (limited to 'engines')
-rw-r--r-- | engines/wintermute/graphics/transparentSurface.cpp | 234 |
1 files changed, 157 insertions, 77 deletions
diff --git a/engines/wintermute/graphics/transparentSurface.cpp b/engines/wintermute/graphics/transparentSurface.cpp index 33f2043839..e25efecacf 100644 --- a/engines/wintermute/graphics/transparentSurface.cpp +++ b/engines/wintermute/graphics/transparentSurface.cpp @@ -43,6 +43,74 @@ TransparentSurface::TransparentSurface(const Surface &surf, bool copyData) : Sur } } +void doBlit(byte *ino, byte* outo, uint32 width, uint32 height, uint32 pitch, uint32 inStep, uint32 inoStep) { + byte *in, *out; + + const int bShift = 8;//img->format.bShift; + const int gShift = 16;//img->format.gShift; + const int rShift = 24;//img->format.rShift; + const int aShift = 0;//img->format.aShift; + + const int bShiftTarget = 8;//target.format.bShift; + const int gShiftTarget = 16;//target.format.gShift; + const int rShiftTarget = 24;//target.format.rShift; + + for (int i = 0; i < height; i++) { + out = outo; + in = ino; + for (int j = 0; j < width; j++) { + uint32 pix = *(uint32 *)in; + uint32 o_pix = *(uint32 *) out; + int b = (pix >> bShift) & 0xff; + int g = (pix >> gShift) & 0xff; + int r = (pix >> rShift) & 0xff; + int a = (pix >> aShift) & 0xff; + int o_b, o_g, o_r, o_a; + in += inStep; + + /* if (ca != 255) { + a = a * ca >> 8; + }*/ + + switch (a) { + case 0: // Full transparency + out += 4; + break; + case 255: // Full opacity + o_b = b; + o_g = g; + o_r = r; + o_a = a; + //*(uint32 *)out = target.format.ARGBToColor(o_a, o_r, o_g, o_b); + out[0] = o_a; + out[1] = o_b; + out[2] = o_g; + out[3] = o_r; + out += 4; + break; + + default: // alpha blending + o_a = 255; + o_b = (o_pix >> bShiftTarget) & 0xff; + o_g = (o_pix >> gShiftTarget) & 0xff; + o_r = (o_pix >> rShiftTarget) & 0xff; + o_b += ((b - o_b) * a) >> 8; + o_g += ((g - o_g) * a) >> 8; + o_r += ((r - o_r) * a) >> 8; + //*(uint32 *)out = target.format.ARGBToColor(o_a, o_r, o_g, o_b); + out[0] = o_a; + out[1] = o_b; + out[2] = o_g; + out[3] = o_r; + out += 4; + } + } + outo += pitch; + ino += inoStep; + } +} + + Common::Rect TransparentSurface::blit(Graphics::Surface &target, int posX, int posY, int flipping, Common::Rect *pPartRect, uint color, int width, int height) { int ca = (color >> 24) & 0xff; @@ -145,85 +213,97 @@ Common::Rect TransparentSurface::blit(Graphics::Surface &target, int posX, int p byte *outo = (byte *)target.getBasePtr(posX, posY); byte *in, *out; - int bShift = img->format.bShift; - int gShift = img->format.gShift; - int rShift = img->format.rShift; - int aShift = img->format.aShift; - - int bShiftTarget = target.format.bShift; - int gShiftTarget = target.format.gShift; - int rShiftTarget = target.format.rShift; - - for (int i = 0; i < img->h; i++) { - out = outo; - in = ino; - for (int j = 0; j < img->w; j++) { - uint32 pix = *(uint32 *)in; - uint32 o_pix = *(uint32 *) out; - int b = (pix >> bShift) & 0xff; - int g = (pix >> gShift) & 0xff; - int r = (pix >> rShift) & 0xff; - int a = (pix >> aShift) & 0xff; - int o_b, o_g, o_r, o_a; - in += inStep; - - if (ca != 255) { - a = a * ca >> 8; - } - - switch (a) { - case 0: // Full transparency - out += 4; - break; - case 255: // Full opacity - if (cb != 255) - o_b = (b * cb) >> 8; - else - o_b = b; - - if (cg != 255) - o_g = (g * cg) >> 8; - else - o_g = g; - - if (cr != 255) - o_r = (r * cr) >> 8; - else - o_r = r; - o_a = a; - *(uint32 *)out = target.format.ARGBToColor(o_a, o_r, o_g, o_b); - out += 4; - break; - - default: // alpha blending - o_a = 255; - o_b = (o_pix >> bShiftTarget) & 0xff; - o_g = (o_pix >> gShiftTarget) & 0xff; - o_r = (o_pix >> rShiftTarget) & 0xff; - if (cb == 0) - o_b = 0; - else if (cb != 255) - o_b += ((b - o_b) * a * cb) >> 16; - else - o_b += ((b - o_b) * a) >> 8; - if (cg == 0) - o_g = 0; - else if (cg != 255) - o_g += ((g - o_g) * a * cg) >> 16; - else - o_g += ((g - o_g) * a) >> 8; - if (cr == 0) - o_r = 0; - else if (cr != 255) - o_r += ((r - o_r) * a * cr) >> 16; - else - o_r += ((r - o_r) * a) >> 8; - *(uint32 *)out = target.format.ARGBToColor(o_a, o_r, o_g, o_b); - out += 4; + const int bShift = 8;//img->format.bShift; + const int gShift = 16;//img->format.gShift; + const int rShift = 24;//img->format.rShift; + const int aShift = 0;//img->format.aShift; + + const int bShiftTarget = 8;//target.format.bShift; + const int gShiftTarget = 16;//target.format.gShift; + const int rShiftTarget = 24;//target.format.rShift; + + if (ca == 255 && cb == 255 && cg == 255 && cr == 255) { + doBlit(ino, outo, img->w, img->h, target.pitch, inStep, inoStep); + } else { + for (int i = 0; i < img->h; i++) { + out = outo; + in = ino; + for (int j = 0; j < img->w; j++) { + uint32 pix = *(uint32 *)in; + uint32 o_pix = *(uint32 *) out; + int b = (pix >> bShift) & 0xff; + int g = (pix >> gShift) & 0xff; + int r = (pix >> rShift) & 0xff; + int a = (pix >> aShift) & 0xff; + int o_b, o_g, o_r, o_a; + in += inStep; + + if (ca != 255) { + a = a * ca >> 8; + } + + switch (a) { + case 0: // Full transparency + out += 4; + break; + case 255: // Full opacity + if (cb != 255) + o_b = (b * cb) >> 8; + else + o_b = b; + + if (cg != 255) + o_g = (g * cg) >> 8; + else + o_g = g; + + if (cr != 255) + o_r = (r * cr) >> 8; + else + o_r = r; + o_a = a; + //*(uint32 *)out = target.format.ARGBToColor(o_a, o_r, o_g, o_b); + out[0] = o_a; + out[1] = o_b; + out[2] = o_g; + out[3] = o_r; + out += 4; + break; + + default: // alpha blending + o_a = 255; + o_b = (o_pix >> bShiftTarget) & 0xff; + o_g = (o_pix >> gShiftTarget) & 0xff; + o_r = (o_pix >> rShiftTarget) & 0xff; + if (cb == 0) + o_b = 0; + else if (cb != 255) + o_b += ((b - o_b) * a * cb) >> 16; + else + o_b += ((b - o_b) * a) >> 8; + if (cg == 0) + o_g = 0; + else if (cg != 255) + o_g += ((g - o_g) * a * cg) >> 16; + else + o_g += ((g - o_g) * a) >> 8; + if (cr == 0) + o_r = 0; + else if (cr != 255) + o_r += ((r - o_r) * a * cr) >> 16; + else + o_r += ((r - o_r) * a) >> 8; + //*(uint32 *)out = target.format.ARGBToColor(o_a, o_r, o_g, o_b); + out[0] = o_a; + out[1] = o_b; + out[2] = o_g; + out[3] = o_r; + out += 4; + } } + outo += target.pitch; + ino += inoStep; } - outo += target.pitch; - ino += inoStep; } } |