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- renamed some fixed point stuff in the texture composition code.

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This commit is contained in:
Christoph Oelckers 2016-03-24 16:16:45 +01:00
parent 86d1b2955a
commit 5bf806e478
5 changed files with 35 additions and 25 deletions
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6
src/p_3dmidtex.cpp
View file

@ -230,12 +230,12 @@ bool P_GetMidTexturePosition(const line_t *line, int sideno, fixed_t *ptextop, f
FTexture * tex= TexMan(texnum);
if (!tex) return false;
fixed_t totalscale = abs(FixedMul(side->GetTextureYScale(side_t::mid), tex->yScale));
double totalscale = fabs(FIXED2DBL(side->GetTextureYScale(side_t::mid)) * tex->GetScaleY());
fixed_t y_offset = side->GetTextureYOffset(side_t::mid);
fixed_t textureheight = tex->GetScaledHeight(totalscale) << FRACBITS;
if (totalscale != FRACUNIT && !tex->bWorldPanning)
if (totalscale != 1. && !tex->bWorldPanning)
{
y_offset = FixedDiv(y_offset, totalscale);
y_offset = fixed_t(y_offset * totalscale);
}
if(line->flags & ML_DONTPEGBOTTOM)

12
src/textures/bitmap.cpp
View file

@ -146,9 +146,9 @@ void iCopyColors(BYTE *pout, const BYTE *pin, int count, int step, FCopyInfo *in
a = TSrc::A(pin, tr, tg, tb);
if (TBlend::ProcessAlpha0() || a)
{
r = (TSrc::R(pin)*inf->blendcolor[0])>>FRACBITS;
g = (TSrc::G(pin)*inf->blendcolor[1])>>FRACBITS;
b = (TSrc::B(pin)*inf->blendcolor[2])>>FRACBITS;
r = (TSrc::R(pin)*inf->blendcolor[0])>>BLENDBITS;
g = (TSrc::G(pin)*inf->blendcolor[1])>>BLENDBITS;
b = (TSrc::B(pin)*inf->blendcolor[2])>>BLENDBITS;
TBlend::OpC(pout[TDest::RED], r, a, inf);
TBlend::OpC(pout[TDest::GREEN], g, a, inf);
@ -167,9 +167,9 @@ void iCopyColors(BYTE *pout, const BYTE *pin, int count, int step, FCopyInfo *in
a = TSrc::A(pin, tr, tg, tb);
if (TBlend::ProcessAlpha0() || a)
{
r = (TSrc::R(pin)*inf->blendcolor[3] + inf->blendcolor[0]) >> FRACBITS;
g = (TSrc::G(pin)*inf->blendcolor[3] + inf->blendcolor[1]) >> FRACBITS;
b = (TSrc::B(pin)*inf->blendcolor[3] + inf->blendcolor[2]) >> FRACBITS;
r = (TSrc::R(pin)*inf->blendcolor[3] + inf->blendcolor[0]) >> BLENDBITS;
g = (TSrc::G(pin)*inf->blendcolor[3] + inf->blendcolor[1]) >> BLENDBITS;
b = (TSrc::B(pin)*inf->blendcolor[3] + inf->blendcolor[2]) >> BLENDBITS;
TBlend::OpC(pout[TDest::RED], r, a, inf);
TBlend::OpC(pout[TDest::GREEN], g, a, inf);

24
src/textures/bitmap.h
View file

@ -48,6 +48,14 @@ struct FClipRect
bool Intersect(int ix, int iy, int iw, int ih);
};
typedef int blend_t;
enum
{
BLENDBITS = 16,
BLENDUNIT = (1<<BLENDBITS)
};
class FBitmap
{
protected:
@ -338,9 +346,9 @@ struct FCopyInfo
{
ECopyOp op;
EBlend blend;
fixed_t blendcolor[4];
fixed_t alpha;
fixed_t invalpha;
blend_t blendcolor[4];
blend_t alpha;
blend_t invalpha;
};
struct bOverwrite
@ -360,7 +368,7 @@ struct bCopy
struct bCopyNewAlpha
{
static __forceinline void OpC(BYTE &d, BYTE s, BYTE a, FCopyInfo *i) { d = s; }
static __forceinline void OpA(BYTE &d, BYTE s, FCopyInfo *i) { d = (s*i->alpha) >> FRACBITS; }
static __forceinline void OpA(BYTE &d, BYTE s, FCopyInfo *i) { d = (s*i->alpha) >> BLENDBITS; }
static __forceinline bool ProcessAlpha0() { return false; }
};
@ -380,28 +388,28 @@ struct bOverlay
struct bBlend
{
static __forceinline void OpC(BYTE &d, BYTE s, BYTE a, FCopyInfo *i) { d = (d*i->invalpha + s*i->alpha) >> FRACBITS; }
static __forceinline void OpC(BYTE &d, BYTE s, BYTE a, FCopyInfo *i) { d = (d*i->invalpha + s*i->alpha) >> BLENDBITS; }
static __forceinline void OpA(BYTE &d, BYTE s, FCopyInfo *i) { d = s; }
static __forceinline bool ProcessAlpha0() { return false; }
};
struct bAdd
{
static __forceinline void OpC(BYTE &d, BYTE s, BYTE a, FCopyInfo *i) { d = MIN<int>((d*FRACUNIT + s*i->alpha) >> FRACBITS, 255); }
static __forceinline void OpC(BYTE &d, BYTE s, BYTE a, FCopyInfo *i) { d = MIN<int>((d*BLENDUNIT + s*i->alpha) >> BLENDBITS, 255); }
static __forceinline void OpA(BYTE &d, BYTE s, FCopyInfo *i) { d = s; }
static __forceinline bool ProcessAlpha0() { return false; }
};
struct bSubtract
{
static __forceinline void OpC(BYTE &d, BYTE s, BYTE a, FCopyInfo *i) { d = MAX<int>((d*FRACUNIT - s*i->alpha) >> FRACBITS, 0); }
static __forceinline void OpC(BYTE &d, BYTE s, BYTE a, FCopyInfo *i) { d = MAX<int>((d*BLENDUNIT - s*i->alpha) >> BLENDBITS, 0); }
static __forceinline void OpA(BYTE &d, BYTE s, FCopyInfo *i) { d = s; }
static __forceinline bool ProcessAlpha0() { return false; }
};
struct bReverseSubtract
{
static __forceinline void OpC(BYTE &d, BYTE s, BYTE a, FCopyInfo *i) { d = MAX<int>((-d*FRACUNIT + s*i->alpha) >> FRACBITS, 0); }
static __forceinline void OpC(BYTE &d, BYTE s, BYTE a, FCopyInfo *i) { d = MAX<int>((-d*BLENDUNIT + s*i->alpha) >> BLENDBITS, 0); }
static __forceinline void OpA(BYTE &d, BYTE s, FCopyInfo *i) { d = s; }
static __forceinline bool ProcessAlpha0() { return false; }
};

14
src/textures/multipatchtexture.cpp
View file

@ -180,7 +180,7 @@ protected:
FRemapTable *Translation;
PalEntry Blend;
FTexture *Texture;
fixed_t Alpha;
blend_t Alpha;
TexPart();
};
@ -593,7 +593,7 @@ int FMultiPatchTexture::CopyTrueColorPixels(FBitmap *bmp, int x, int y, int rota
memset (&info, 0, sizeof(info));
info.alpha = Parts[i].Alpha;
info.invalpha = OPAQUE - info.alpha;
info.invalpha = BLENDUNIT - info.alpha;
info.op = ECopyOp(Parts[i].op);
PalEntry b = Parts[i].Blend;
if (b.a == 0 && b != BLEND_NONE)
@ -604,14 +604,14 @@ int FMultiPatchTexture::CopyTrueColorPixels(FBitmap *bmp, int x, int y, int rota
{
if (b.a == 255)
{
info.blendcolor[0] = b.r * FRACUNIT / 255;
info.blendcolor[1] = b.g * FRACUNIT / 255;
info.blendcolor[2] = b.b * FRACUNIT / 255;
info.blendcolor[0] = b.r * BLENDUNIT / 255;
info.blendcolor[1] = b.g * BLENDUNIT / 255;
info.blendcolor[2] = b.b * BLENDUNIT / 255;
info.blend = BLEND_MODULATE;
}
else
{
fixed_t blendalpha = b.a * FRACUNIT / 255;
blend_t blendalpha = b.a * BLENDUNIT / 255;
info.blendcolor[0] = b.r * blendalpha;
info.blendcolor[1] = b.g * blendalpha;
info.blendcolor[2] = b.b * blendalpha;
@ -1165,7 +1165,7 @@ void FMultiPatchTexture::ParsePatch(FScanner &sc, TexPart & part, bool silent, i
else if (sc.Compare("alpha"))
{
sc.MustGetFloat();
part.Alpha = clamp<fixed_t>(FLOAT2FIXED(sc.Float), 0, OPAQUE);
part.Alpha = clamp<blend_t>(int(sc.Float / BLENDUNIT), 0, BLENDUNIT);
// bComplex is not set because it is only needed when the style is not OP_COPY.
}
else if (sc.Compare("style"))

4
src/textures/textures.h
View file

@ -2,6 +2,7 @@
#define __TEXTURES_H
#include "doomtype.h"
#include "m_fixed.h"
class FBitmap;
struct FRemapTable;
@ -204,9 +205,10 @@ public:
int GetScaledWidth () { int foo = (Width << 17) / xScale; return (foo >> 1) + (foo & 1); }
int GetScaledHeight () { int foo = (Height << 17) / yScale; return (foo >> 1) + (foo & 1); }
int GetScaledHeight(fixed_t scale) { int foo = (Height << 17) / scale; return (foo >> 1) + (foo & 1); }
int GetScaledHeight(double scale) { return GetScaledHeight(FLOAT2FIXED(scale)); }
double GetScaledWidthDouble () { return (Width * 65536.) / xScale; }
double GetScaledHeightDouble () { return (Height * 65536.) / yScale; }
double GetScaleY() const { return FIXED2DBL(yScale); }
int GetScaledLeftOffset () { int foo = (LeftOffset << 17) / xScale; return (foo >> 1) + (foo & 1); }
int GetScaledTopOffset () { int foo = (TopOffset << 17) / yScale; return (foo >> 1) + (foo & 1); }