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Change: Support custom transparency remaps with 32bpp blitters.

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This closes a 15 year old TODO...
This commit is contained in:
Peter Nelson
2023-12-22 16:01:33 +00:00
committed by Peter Nelson
parent 0bc22dd310
commit 9ce1626bb4
10 changed files with 114 additions and 24 deletions
Download Patch File Download Diff File Expand all files Collapse all files

24
src/blitter/32bpp_anim.cpp
View File

@@ -9,6 +9,7 @@
#include "../stdafx.h"
#include "../video/video_driver.hpp"
#include "../palette_func.h"
#include "32bpp_anim.hpp"
#include "common.hpp"
@@ -190,10 +191,6 @@ inline void Blitter_32bppAnim::Draw(const Blitter::BlitterParams *bp, ZoomLevel
break;
case BM_TRANSPARENT:
/* TODO -- We make an assumption here that the remap in fact is transparency, not some colour.
* This is never a problem with the code we produce, but newgrfs can make it fail... or at least:
* we produce a result the newgrf maker didn't expect ;) */
/* Make the current colour a bit more black, so it looks like this image is transparent */
src_n += n;
if (src_px->a == 255) {
@@ -215,6 +212,24 @@ inline void Blitter_32bppAnim::Draw(const Blitter::BlitterParams *bp, ZoomLevel
}
break;
case BM_TRANSPARENT_REMAP:
/* Apply custom transparency remap. */
src_n += n;
if (src_px->a != 0) {
src_px += n;
do {
*dst = this->LookupColourInPalette(bp->remap[GetNearestColourIndex(*dst)]);
*anim = 0;
anim++;
dst++;
} while (--n != 0);
} else {
dst += n;
anim += n;
src_px += n;
}
break;
default:
if (src_px->a == 255) {
do {
@@ -264,6 +279,7 @@ void Blitter_32bppAnim::Draw(Blitter::BlitterParams *bp, BlitterMode mode, ZoomL
case BM_NORMAL: Draw<BM_NORMAL> (bp, zoom); return;
case BM_COLOUR_REMAP: Draw<BM_COLOUR_REMAP>(bp, zoom); return;
case BM_TRANSPARENT: Draw<BM_TRANSPARENT> (bp, zoom); return;
case BM_TRANSPARENT_REMAP: Draw<BM_TRANSPARENT_REMAP>(bp, zoom); return;
case BM_CRASH_REMAP: Draw<BM_CRASH_REMAP> (bp, zoom); return;
case BM_BLACK_REMAP: Draw<BM_BLACK_REMAP> (bp, zoom); return;
}

19
src/blitter/32bpp_anim_sse4.cpp
View File

@@ -7,6 +7,7 @@
/** @file 32bpp_anim_sse4.cpp Implementation of the SSE4 32 bpp blitter with animation support. */
#include "palette_func.h"
#ifdef WITH_SSE
#include "../stdafx.h"
@@ -317,6 +318,21 @@ bmcr_alpha_blend_single:
}
break;
case BM_TRANSPARENT_REMAP:
/* Apply custom transparency remap. */
for (uint x = (uint) bp->width; x > 0; x--) {
if (src->a != 0) {
*dst = this->LookupColourInPalette(bp->remap[GetNearestColourIndex(*dst)]);
*anim = 0;
}
src_mv++;
dst++;
src++;
anim++;
}
break;
case BM_CRASH_REMAP:
for (uint x = (uint) bp->width; x > 0; x--) {
if (src_mv->m == 0) {
@@ -351,7 +367,7 @@ bmcr_alpha_blend_single:
}
next_line:
if (mode != BM_TRANSPARENT) src_mv_line += si->sprite_width;
if (mode != BM_TRANSPARENT && mode != BM_TRANSPARENT_REMAP) src_mv_line += si->sprite_width;
src_rgba_line = (const Colour*) ((const byte*) src_rgba_line + si->sprite_line_size);
dst_line += bp->pitch;
anim_line += this->anim_buf_pitch;
@@ -414,6 +430,7 @@ bm_normal:
}
break;
case BM_TRANSPARENT: Draw<BM_TRANSPARENT, RM_NONE, BT_NONE, true, true>(bp, zoom); return;
case BM_TRANSPARENT_REMAP: Draw<BM_TRANSPARENT_REMAP, RM_NONE, BT_NONE, true, true>(bp, zoom); return;
case BM_CRASH_REMAP: Draw<BM_CRASH_REMAP, RM_NONE, BT_NONE, true, true>(bp, zoom); return;
case BM_BLACK_REMAP: Draw<BM_BLACK_REMAP, RM_NONE, BT_NONE, true, true>(bp, zoom); return;
}

21
src/blitter/32bpp_optimized.cpp
View File

@@ -10,6 +10,7 @@
#include "../stdafx.h"
#include "../zoom_func.h"
#include "../settings_type.h"
#include "../palette_func.h"
#include "32bpp_optimized.hpp"
#include "../safeguards.h"
@@ -185,10 +186,6 @@ inline void Blitter_32bppOptimized::Draw(const Blitter::BlitterParams *bp, ZoomL
break;
case BM_TRANSPARENT:
/* TODO -- We make an assumption here that the remap in fact is transparency, not some colour.
* This is never a problem with the code we produce, but newgrfs can make it fail... or at least:
* we produce a result the newgrf maker didn't expect ;) */
/* Make the current colour a bit more black, so it looks like this image is transparent */
src_n += n;
if (src_px->a == 255) {
@@ -206,6 +203,21 @@ inline void Blitter_32bppOptimized::Draw(const Blitter::BlitterParams *bp, ZoomL
}
break;
case BM_TRANSPARENT_REMAP:
/* Apply custom transparency remap. */
src_n += n;
if (src_px->a != 0) {
src_px += n;
do {
*dst = this->LookupColourInPalette(bp->remap[GetNearestColourIndex(*dst)]);
dst++;
} while (--n != 0);
} else {
dst += n;
src_px += n;
}
break;
default:
if (src_px->a == 255) {
/* faster than memcpy(), n is usually low */
@@ -252,6 +264,7 @@ void Blitter_32bppOptimized::Draw(Blitter::BlitterParams *bp, BlitterMode mode,
case BM_NORMAL: Draw<BM_NORMAL, Tpal_to_rgb>(bp, zoom); return;
case BM_COLOUR_REMAP: Draw<BM_COLOUR_REMAP, Tpal_to_rgb>(bp, zoom); return;
case BM_TRANSPARENT: Draw<BM_TRANSPARENT, Tpal_to_rgb>(bp, zoom); return;
case BM_TRANSPARENT_REMAP: Draw<BM_TRANSPARENT_REMAP, Tpal_to_rgb>(bp, zoom); return;
case BM_CRASH_REMAP: Draw<BM_CRASH_REMAP, Tpal_to_rgb>(bp, zoom); return;
case BM_BLACK_REMAP: Draw<BM_BLACK_REMAP, Tpal_to_rgb>(bp, zoom); return;
}

16
src/blitter/32bpp_simple.cpp
View File

@@ -9,6 +9,7 @@
#include "../stdafx.h"
#include "../zoom_func.h"
#include "../palette_func.h"
#include "32bpp_simple.hpp"
#include "../table/sprites.h"
@@ -63,12 +64,17 @@ void Blitter_32bppSimple::Draw(Blitter::BlitterParams *bp, BlitterMode mode, Zoo
break;
case BM_TRANSPARENT:
/* TODO -- We make an assumption here that the remap in fact is transparency, not some colour.
* This is never a problem with the code we produce, but newgrfs can make it fail... or at least:
* we produce a result the newgrf maker didn't expect ;) */
/* Make the current colour a bit more black, so it looks like this image is transparent */
if (src->a != 0) *dst = MakeTransparent(*dst, 192);
if (src->a != 0) {
*dst = MakeTransparent(*dst, 192);
}
break;
case BM_TRANSPARENT_REMAP:
/* Apply custom transparency remap. */
if (src->a != 0) {
*dst = this->LookupColourInPalette(bp->remap[GetNearestColourIndex(*dst)]);
}
break;
default:

13
src/blitter/32bpp_sse_func.hpp
View File

@@ -392,6 +392,18 @@ bmcr_alpha_blend_single:
}
break;
case BM_TRANSPARENT_REMAP:
/* Apply custom transparency remap. */
for (uint x = (uint) bp->width; x > 0; x--) {
if (src->a != 0) {
*dst = this->LookupColourInPalette(bp->remap[GetNearestColourIndex(*dst)]);
}
src_mv++;
dst++;
src++;
}
break;
case BM_CRASH_REMAP:
for (uint x = (uint) bp->width; x > 0; x--) {
if (src_mv->m == 0) {
@@ -471,6 +483,7 @@ bm_normal:
Draw<BM_COLOUR_REMAP, RM_WITH_MARGIN, BT_NONE, true>(bp, zoom); return;
}
case BM_TRANSPARENT: Draw<BM_TRANSPARENT, RM_NONE, BT_NONE, true>(bp, zoom); return;
case BM_TRANSPARENT_REMAP: Draw<BM_TRANSPARENT_REMAP, RM_NONE, BT_NONE, true>(bp, zoom); return;
case BM_CRASH_REMAP: Draw<BM_CRASH_REMAP, RM_NONE, BT_NONE, true>(bp, zoom); return;
case BM_BLACK_REMAP: Draw<BM_BLACK_REMAP, RM_NONE, BT_NONE, true>(bp, zoom); return;
}

28
src/blitter/40bpp_anim.cpp
View File

@@ -11,6 +11,7 @@
#include "../zoom_func.h"
#include "../settings_type.h"
#include "../video/video_driver.hpp"
#include "../palette_func.h"
#include "40bpp_anim.hpp"
#include "common.hpp"
@@ -234,10 +235,6 @@ inline void Blitter_40bppAnim::Draw(const Blitter::BlitterParams *bp, ZoomLevel
break;
case BM_TRANSPARENT:
/* TODO -- We make an assumption here that the remap in fact is transparency, not some colour.
* This is never a problem with the code we produce, but newgrfs can make it fail... or at least:
* we produce a result the newgrf maker didn't expect ;) */
/* Make the current colour a bit more black, so it looks like this image is transparent */
src_n += n;
if (src_px->a == 255) {
@@ -263,6 +260,28 @@ inline void Blitter_40bppAnim::Draw(const Blitter::BlitterParams *bp, ZoomLevel
}
break;
case BM_TRANSPARENT_REMAP:
/* Apply custom transparency remap. */
src_n += n;
if (src_px->a != 0) {
src_px += n;
do {
if (*anim != 0) {
*anim = bp->remap[*anim];
} else {
*dst = this->LookupColourInPalette(bp->remap[GetNearestColourIndex(*dst)]);
*anim = 0;
}
anim++;
dst++;
} while (--n != 0);
} else {
dst += n;
anim += n;
src_px += n;
}
break;
default:
if (src_px->a == 255) {
do {
@@ -323,6 +342,7 @@ void Blitter_40bppAnim::Draw(Blitter::BlitterParams *bp, BlitterMode mode, ZoomL
case BM_NORMAL: Draw<BM_NORMAL> (bp, zoom); return;
case BM_COLOUR_REMAP: Draw<BM_COLOUR_REMAP>(bp, zoom); return;
case BM_TRANSPARENT: Draw<BM_TRANSPARENT> (bp, zoom); return;
case BM_TRANSPARENT_REMAP: Draw<BM_TRANSPARENT_REMAP>(bp, zoom); return;
case BM_CRASH_REMAP: Draw<BM_CRASH_REMAP> (bp, zoom); return;
case BM_BLACK_REMAP: Draw<BM_BLACK_REMAP> (bp, zoom); return;
}

3
src/blitter/8bpp_optimized.cpp
View File

@@ -100,7 +100,8 @@ void Blitter_8bppOptimized::Draw(Blitter::BlitterParams *bp, BlitterMode mode, Z
dst += pixels;
break;
case BM_TRANSPARENT: {
case BM_TRANSPARENT:
case BM_TRANSPARENT_REMAP: {
const uint8_t *remap = bp->remap;
src += pixels;
do {

1
src/blitter/8bpp_simple.cpp
View File

@@ -42,6 +42,7 @@ void Blitter_8bppSimple::Draw(Blitter::BlitterParams *bp, BlitterMode mode, Zoom
break;
case BM_TRANSPARENT:
case BM_TRANSPARENT_REMAP:
if (*src != 0) colour = bp->remap[*dst];
break;

3
src/blitter/base.hpp
View File

@@ -17,7 +17,8 @@
enum BlitterMode {
BM_NORMAL, ///< Perform the simple blitting.
BM_COLOUR_REMAP, ///< Perform a colour remapping.
BM_TRANSPARENT, ///< Perform transparency colour remapping.
BM_TRANSPARENT, ///< Perform transparency darkening remapping.
BM_TRANSPARENT_REMAP, ///< Perform transparency colour remapping.
BM_CRASH_REMAP, ///< Perform a crash remapping.
BM_BLACK_REMAP, ///< Perform remapping to a completely blackened sprite
};