Changeset - r24910:137e83ad9c3d
[Not reviewed]
master
0 5 2
Michael Lutz - 3 years ago 2021-01-16 15:43:44
michi@icosahedron.de
Add: A 32 bpp blitter that uses the animation buffer from the video backend to speed up palette animation.
7 files changed with 607 insertions and 3 deletions:
0 comments (0 inline, 0 general)
src/blitter/32bpp_base.hpp
Show inline comments
 
@@ -125,6 +125,18 @@ public:
 
	}
 

	
 
	/**
 
	 * Make a colour dark grey, for specialized 32bpp remapping.
 
	 * @param colour the colour to make dark.
 
	 * @return the new colour, now darker.
 
	 */
 
	static inline Colour MakeDark(Colour colour)
 
	{
 
		uint8 d = MakeDark(colour.r, colour.g, colour.b);
 

	
 
		return Colour(d, d, d);
 
	}
 

	
 
	/**
 
	 * Make a colour grey - based.
 
	 * @param colour the colour to make grey.
 
	 * @return the new colour, now grey.
 
@@ -154,6 +166,16 @@ public:
 

	
 
		return ReallyAdjustBrightness(colour, brightness);
 
	}
 

	
 
	static inline uint8 GetColourBrightness(Colour colour)
 
	{
 
		uint8 rgb_max = std::max(colour.r, std::max(colour.g, colour.b));
 

	
 
		/* Black pixel (8bpp or old 32bpp image), so use default value */
 
		if (rgb_max == 0) rgb_max = DEFAULT_BRIGHTNESS;
 

	
 
		return rgb_max;
 
	}
 
};
 

	
 
#endif /* BLITTER_32BPP_BASE_HPP */
src/blitter/32bpp_optimized.cpp
Show inline comments
 
@@ -252,7 +252,7 @@ void Blitter_32bppOptimized::Draw(Blitte
 
	}
 
}
 

	
 
Sprite *Blitter_32bppOptimized::Encode(const SpriteLoader::Sprite *sprite, AllocatorProc *allocator)
 
template <bool Tpal_to_rgb> Sprite *Blitter_32bppOptimized::EncodeInternal(const SpriteLoader::Sprite *sprite, AllocatorProc *allocator)
 
{
 
	/* streams of pixels (a, r, g, b channels)
 
	 *
 
@@ -322,7 +322,7 @@ Sprite *Blitter_32bppOptimized::Encode(c
 
				if (a != 0) {
 
					dst_px->a = a;
 
					*dst_n = src->m;
 
					if (src->m != 0) {
 
					if (Tpal_to_rgb && src->m != 0) {
 
						/* Get brightest value */
 
						uint8 rgb_max = std::max({src->r, src->g, src->b});
 

	
 
@@ -397,3 +397,11 @@ Sprite *Blitter_32bppOptimized::Encode(c
 

	
 
	return dest_sprite;
 
}
 

	
 
template Sprite *Blitter_32bppOptimized::EncodeInternal<true>(const SpriteLoader::Sprite *sprite, AllocatorProc *allocator);
 
template Sprite *Blitter_32bppOptimized::EncodeInternal<false>(const SpriteLoader::Sprite *sprite, AllocatorProc *allocator);
 

	
 
Sprite *Blitter_32bppOptimized::Encode(const SpriteLoader::Sprite *sprite, AllocatorProc *allocator)
 
{
 
	return this->EncodeInternal<true>(sprite, allocator);
 
}
src/blitter/32bpp_optimized.hpp
Show inline comments
 
@@ -27,6 +27,9 @@ public:
 
	const char *GetName() override { return "32bpp-optimized"; }
 

	
 
	template <BlitterMode mode> void Draw(const Blitter::BlitterParams *bp, ZoomLevel zoom);
 

	
 
protected:
 
	template <bool Tpal_to_rgb> Sprite *EncodeInternal(const SpriteLoader::Sprite *sprite, AllocatorProc *allocator);
 
};
 

	
 
/** Factory for the optimised 32 bpp blitter (without palette animation). */
src/blitter/40bpp_anim.cpp
Show inline comments
 
new file 100644
 
/* $Id$ */
 

	
 
/*
 
 * This file is part of OpenTTD.
 
 * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
 
 * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 
 * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
 
 */
 

	
 
/** @file 40bpp_optimized.cpp Implementation of the optimized 40 bpp blitter. */
 

	
 
#include "../stdafx.h"
 
#include "../zoom_func.h"
 
#include "../settings_type.h"
 
#include "../video/video_driver.hpp"
 
#include "40bpp_anim.hpp"
 

	
 
#include "../table/sprites.h"
 

	
 
#include "../safeguards.h"
 

	
 

	
 
/** Instantiation of the 40bpp with animation blitter factory. */
 
static FBlitter_40bppAnim iFBlitter_40bppAnim;
 

	
 
/** Cached black value. */
 
static const Colour _black_colour(0, 0, 0);
 

	
 

	
 
void Blitter_40bppAnim::SetPixel(void *video, int x, int y, uint8 colour)
 
{
 
	if (_screen_disable_anim) {
 
		Blitter_32bppOptimized::SetPixel(video, x, y, colour);
 
	} else {
 
		*((Colour *)video + x + y * _screen.pitch) = _black_colour;
 

	
 
		VideoDriver::GetInstance()->GetAnimBuffer()[((uint32 *)video - (uint32 *)_screen.dst_ptr) + x + y * _screen.pitch] = colour;
 
	}
 
}
 

	
 
void Blitter_40bppAnim::DrawRect(void *video, int width, int height, uint8 colour)
 
{
 
	if (_screen_disable_anim) {
 
		/* This means our output is not to the screen, so we can't be doing any animation stuff, so use our parent DrawRect() */
 
		Blitter_32bppOptimized::DrawRect(video, width, height, colour);
 
		return;
 
	}
 

	
 
	assert(VideoDriver::GetInstance()->GetAnimBuffer() != nullptr);
 
	uint8 *anim_line = ((uint32 *)video - (uint32 *)_screen.dst_ptr) + VideoDriver::GetInstance()->GetAnimBuffer();
 

	
 
	do {
 
		Colour *dst = (Colour *)video;
 
		uint8 *anim = anim_line;
 

	
 
		for (int i = width; i > 0; i--) {
 
			*dst = _black_colour;
 
			*anim = colour;
 
			dst++;
 
			anim++;
 
		}
 
		video = (uint32 *)video + _screen.pitch;
 
		anim_line += _screen.pitch;
 
	} while (--height);
 
}
 

	
 
/**
 
 * Draws a sprite to a (screen) buffer. It is templated to allow faster operation.
 
 *
 
 * @tparam mode blitter mode
 
 * @param bp further blitting parameters
 
 * @param zoom zoom level at which we are drawing
 
 */
 
template <BlitterMode mode>
 
inline void Blitter_40bppAnim::Draw(const Blitter::BlitterParams *bp, ZoomLevel zoom)
 
{
 
	const SpriteData *src = (const SpriteData *)bp->sprite;
 

	
 
	/* src_px : each line begins with uint32 n = 'number of bytes in this line',
 
	 *          then n times is the Colour struct for this line */
 
	const Colour *src_px = (const Colour *)(src->data + src->offset[zoom][0]);
 
	/* src_n  : each line begins with uint32 n = 'number of bytes in this line',
 
	 *          then interleaved stream of 'm' and 'n' channels. 'm' is remap,
 
	 *          'n' is number of bytes with the same alpha channel class */
 
	const uint16 *src_n  = (const uint16 *)(src->data + src->offset[zoom][1]);
 

	
 
	/* skip upper lines in src_px and src_n */
 
	for (uint i = bp->skip_top; i != 0; i--) {
 
		src_px = (const Colour *)((const byte *)src_px + *(const uint32 *)src_px);
 
		src_n = (const uint16 *)((const byte *)src_n + *(const uint32 *)src_n);
 
	}
 

	
 
	/* skip lines in dst */
 
	Colour *dst = (Colour *)bp->dst + bp->top * bp->pitch + bp->left;
 
	assert(VideoDriver::GetInstance()->GetAnimBuffer() != nullptr);
 
	uint8 *anim = VideoDriver::GetInstance()->GetAnimBuffer() + ((uint32 *)bp->dst - (uint32 *)_screen.dst_ptr) + bp->top * bp->pitch + bp->left;
 

	
 
	/* store so we don't have to access it via bp everytime (compiler assumes pointer aliasing) */
 
	const byte *remap = bp->remap;
 

	
 
	for (int y = 0; y < bp->height; y++) {
 
		/* next dst line begins here */
 
		Colour *dst_ln = dst + bp->pitch;
 
		uint8 *anim_ln = anim + bp->pitch;
 

	
 
		/* next src line begins here */
 
		const Colour *src_px_ln = (const Colour *)((const byte *)src_px + *(const uint32 *)src_px);
 
		src_px++;
 

	
 
		/* next src_n line begins here */
 
		const uint16 *src_n_ln = (const uint16 *)((const byte *)src_n + *(const uint32 *)src_n);
 
		src_n += 2;
 

	
 
		/* we will end this line when we reach this point */
 
		Colour *dst_end = dst + bp->skip_left;
 

	
 
		/* number of pixels with the same alpha channel class */
 
		uint n;
 

	
 
		while (dst < dst_end) {
 
			n = *src_n++;
 

	
 
			if (src_px->a == 0) {
 
				dst += n;
 
				src_px++;
 
				src_n++;
 

	
 
				if (dst > dst_end) anim += dst - dst_end;
 
			} else {
 
				if (dst + n > dst_end) {
 
					uint d = dst_end - dst;
 
					src_px += d;
 
					src_n += d;
 

	
 
					dst = dst_end - bp->skip_left;
 
					dst_end = dst + bp->width;
 

	
 
					n = std::min<uint>(n - d, (uint)bp->width);
 
					goto draw;
 
				}
 
				dst += n;
 
				src_px += n;
 
				src_n += n;
 
			}
 
		}
 

	
 
		dst -= bp->skip_left;
 
		dst_end -= bp->skip_left;
 

	
 
		dst_end += bp->width;
 

	
 
		while (dst < dst_end) {
 
			n = std::min<uint>(*src_n++, (uint)(dst_end - dst));
 

	
 
			if (src_px->a == 0) {
 
				anim += n;
 
				dst += n;
 
				src_px++;
 
				src_n++;
 
				continue;
 
			}
 

	
 
			draw:;
 

	
 
			switch (mode) {
 
				case BM_COLOUR_REMAP:
 
				case BM_CRASH_REMAP:
 
					if (src_px->a == 255) {
 
						do {
 
							uint8 m = GB(*src_n, 0, 8);
 
							/* In case the m-channel is zero, only apply the crash remap by darkening the RGB colour. */
 
							if (m == 0) {
 
								*dst = mode == BM_CRASH_REMAP ? this->MakeDark(*src_px) : *src_px;
 
								*anim = 0;
 
							} else {
 
								uint r = remap[m];
 
								if (r != 0) {
 
									*dst = src_px->data;
 
									*anim = r;
 
								}
 
							}
 
							anim++;
 
							dst++;
 
							src_px++;
 
							src_n++;
 
						} while (--n != 0);
 
					} else {
 
						do {
 
							uint8 m = GB(*src_n, 0, 8);
 
							Colour b = this->RealizeBlendedColour(*anim, *dst);
 
							if (m == 0) {
 
								Colour c = mode == BM_CRASH_REMAP ? this->MakeDark(*src_px) : *src_px;
 
								*dst = this->ComposeColourRGBANoCheck(c.r, c.g, c.b, src_px->a, b);
 
								*anim = 0;
 
							} else {
 
								uint r = remap[m];
 
								if (r != 0) {
 
									*dst = this->ComposeColourPANoCheck(this->LookupColourInPalette(r), src_px->a, b);
 
									*anim = 0; // Animation colours don't work with alpha-blending.
 
								}
 
							}
 
							anim++;
 
							dst++;
 
							src_px++;
 
							src_n++;
 
						} while (--n != 0);
 
					}
 
					break;
 

	
 
				case BM_BLACK_REMAP:
 
					do {
 
						*anim++ = 0;
 
						*dst++ = _black_colour;
 
						src_px++;
 
						src_n++;
 
					} while (--n != 0);
 
					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) {
 
						src_px += n;
 
						do {
 
							/* If the anim buffer contains a color value, the image composition will
 
							 * only look at the RGB brightness value. As such, we can simply darken the
 
							 * RGB value to darken the anim color. */
 
							Colour b = *anim != 0 ? Colour(this->GetColourBrightness(*dst), 0, 0) : *dst;
 
							*dst = this->MakeTransparent(b, 3, 4);
 
							anim++;
 
							dst++;
 
						} while (--n != 0);
 
					} else {
 
						do {
 
							Colour b = this->RealizeBlendedColour(*anim, *dst);
 
							*dst = this->MakeTransparent(b, (256 * 4 - src_px->a), 256 * 4);
 
							*anim = 0; // Animation colours don't work with alpha-blending.
 
							anim++;
 
							dst++;
 
							src_px++;
 
						} while (--n != 0);
 
					}
 
					break;
 

	
 
				default:
 
					if (src_px->a == 255) {
 
						do {
 
							*anim++ = GB(*src_n, 0, 8);
 
							*dst++ = src_px->data;
 
							src_px++;
 
							src_n++;
 
						} while (--n != 0);
 
						break;
 
					} else {
 
						do {
 
							uint8 m = GB(*src_n, 0, 8);
 
							Colour b = this->RealizeBlendedColour(*anim, *dst);
 

	
 
							if (m == 0) {
 
								*dst = this->ComposeColourRGBANoCheck(src_px->r, src_px->g, src_px->b, src_px->a, b);
 
								*anim = 0;
 
							} else {
 
								*dst = this->ComposeColourPANoCheck(this->LookupColourInPalette(m), src_px->a, b);
 
								*anim = m;
 
							}
 

	
 
							anim++;
 
							dst++;
 
							src_px++;
 
							src_n++;
 
						} while (--n != 0);
 
					}
 
			}
 
		}
 

	
 
		dst = dst_ln;
 
		anim = anim_ln;
 
		src_px = src_px_ln;
 
		src_n  = src_n_ln;
 
	}
 
}
 

	
 
/**
 
 * Draws a sprite to a (screen) buffer. Calls adequate templated function.
 
 *
 
 * @param bp further blitting parameters
 
 * @param mode blitter mode
 
 * @param zoom zoom level at which we are drawing
 
 */
 
void Blitter_40bppAnim::Draw(Blitter::BlitterParams *bp, BlitterMode mode, ZoomLevel zoom)
 
{
 
	assert(_screen.dst_ptr != nullptr);
 

	
 
	if (_screen_disable_anim || VideoDriver::GetInstance()->GetAnimBuffer() == nullptr) {
 
		/* This means our output is not to the screen, so we can't be doing any animation stuff, so use our parent Draw() */
 
		Blitter_32bppOptimized::Draw(bp, mode, zoom);
 
		return;
 
	}
 

	
 
	switch (mode) {
 
		default: NOT_REACHED();
 
		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_CRASH_REMAP:  Draw<BM_CRASH_REMAP> (bp, zoom); return;
 
		case BM_BLACK_REMAP:  Draw<BM_BLACK_REMAP> (bp, zoom); return;
 
	}
 
}
 

	
 
void Blitter_40bppAnim::DrawColourMappingRect(void *dst, int width, int height, PaletteID pal)
 
{
 
	if (_screen_disable_anim) {
 
		/* This means our output is not to the screen, so we can't be doing any animation stuff, so use our parent DrawColourMappingRect() */
 
		Blitter_32bppOptimized::DrawColourMappingRect(dst, width, height, pal);
 
		return;
 
	}
 

	
 
	Colour *udst = (Colour *)dst;
 
	uint8 *anim = VideoDriver::GetInstance()->GetAnimBuffer() + ((uint32 *)dst - (uint32 *)_screen.dst_ptr);
 

	
 
	if (pal == PALETTE_TO_TRANSPARENT) {
 
		/* If the anim buffer contains a color value, the image composition will
 
		 * only look at the RGB brightness value. As such, we can simply darken the
 
		 * RGB value to darken the anim color. */
 
		do {
 
			for (int i = 0; i != width; i++) {
 
				Colour b = *anim != 0 ? Colour(this->GetColourBrightness(*udst), 0, 0) : *udst;
 
				*udst = MakeTransparent(b, 154);
 
				udst++;
 
				anim++;
 
			}
 
			udst = udst - width + _screen.pitch;
 
			anim = anim - width + _screen.pitch;
 
		} while (--height);
 
	} else if (pal == PALETTE_NEWSPAPER) {
 
		const uint8 *remap = GetNonSprite(pal, ST_RECOLOUR) + 1;
 
		do {
 
			for (int i = 0; i != width; i++) {
 
				if (*anim == 0) *udst = MakeGrey(*udst);
 
				*anim = remap[*anim];
 
				udst++;
 
				anim++;
 
			}
 
			udst = udst - width + _screen.pitch;
 
			anim = anim - width + _screen.pitch;
 
		} while (--height);
 
	} else {
 
		const uint8 *remap = GetNonSprite(pal, ST_RECOLOUR) + 1;
 
		do {
 
			for (int i = 0; i != width; i++) {
 
				*anim = remap[*anim];
 
				anim++;
 
			}
 
			anim = anim - width + _screen.pitch;
 
		} while (--height);
 
	}
 
}
 

	
 
Sprite *Blitter_40bppAnim::Encode(const SpriteLoader::Sprite *sprite, AllocatorProc *allocator)
 
{
 
	return this->EncodeInternal<false>(sprite, allocator);
 
}
 

	
 

	
 
void Blitter_40bppAnim::CopyFromBuffer(void *video, const void *src, int width, int height)
 
{
 
	assert(!_screen_disable_anim);
 
	assert(video >= _screen.dst_ptr && video <= (uint32 *)_screen.dst_ptr + _screen.width + _screen.height * _screen.pitch);
 
	uint32 *dst = (uint32 *)video;
 
	const uint32 *usrc = (const uint32 *)src;
 

	
 
	uint8 *anim_buf = VideoDriver::GetInstance()->GetAnimBuffer();
 
	if (anim_buf == nullptr) return;
 
	uint8 *anim_line = ((uint32 *)video - (uint32 *)_screen.dst_ptr) + anim_buf;
 

	
 
	for (; height > 0; height--) {
 
		memcpy(dst, usrc, width * sizeof(uint32));
 
		usrc += width;
 
		dst += _screen.pitch;
 
		/* Copy back the anim-buffer */
 
		memcpy(anim_line, usrc, width * sizeof(uint8));
 
		usrc = (const uint32 *)((const uint8 *)usrc + width);
 
		anim_line += _screen.pitch;
 
	}
 
}
 

	
 
void Blitter_40bppAnim::CopyToBuffer(const void *video, void *dst, int width, int height)
 
{
 
	assert(!_screen_disable_anim);
 
	assert(video >= _screen.dst_ptr && video <= (uint32 *)_screen.dst_ptr + _screen.width + _screen.height * _screen.pitch);
 
	uint32 *udst = (uint32 *)dst;
 
	const uint32 *src = (const uint32 *)video;
 

	
 
	uint8 *anim_buf = VideoDriver::GetInstance()->GetAnimBuffer();
 
	if (anim_buf == nullptr) return;
 
	const uint8 *anim_line = ((const uint32 *)video - (uint32 *)_screen.dst_ptr) + anim_buf;
 

	
 
	for (; height > 0; height--) {
 
		memcpy(udst, src, width * sizeof(uint32));
 
		src += _screen.pitch;
 
		udst += width;
 
		/* Copy the anim-buffer */
 
		memcpy(udst, anim_line, width * sizeof(uint8));
 
		udst = (uint32 *)((uint8 *)udst + width);
 
		anim_line += _screen.pitch;
 
	}
 
}
 

	
 
void Blitter_40bppAnim::CopyImageToBuffer(const void *video, void *dst, int width, int height, int dst_pitch)
 
{
 
	uint8 *anim_buf = VideoDriver::GetInstance()->GetAnimBuffer();
 
	if (anim_buf == nullptr) {
 
		Blitter_32bppOptimized::CopyImageToBuffer(video, dst, width, height, dst_pitch);
 
		return;
 
	}
 

	
 
	uint32 *udst = (uint32 *)dst;
 
	const uint32 *src = (const uint32 *)video;
 
	const uint8 *anim_line = ((const uint32 *)video - (uint32 *)_screen.dst_ptr) + anim_buf;
 

	
 
	for (; height > 0; height--) {
 
		for (int x = 0; x < width; x++) {
 
			udst[x] = this->RealizeBlendedColour(anim_line[x], src[x]).data;
 
		}
 
		src += _screen.pitch;
 
		anim_line += _screen.pitch;
 
		udst += dst_pitch;
 
	}
 
}
 

	
 
void Blitter_40bppAnim::ScrollBuffer(void *video, int &left, int &top, int &width, int &height, int scroll_x, int scroll_y)
 
{
 
	assert(!_screen_disable_anim);
 
	assert(video >= _screen.dst_ptr && video <= (uint32 *)_screen.dst_ptr + _screen.width + _screen.height * _screen.pitch);
 
	uint8 *anim_buf = VideoDriver::GetInstance()->GetAnimBuffer();
 
	uint8 *dst, *src;
 

	
 
	/* We need to scroll the anim-buffer too */
 
	if (scroll_y > 0) {
 
		dst = anim_buf + left + (top + height - 1) * _screen.pitch;
 
		src = dst - scroll_y * _screen.pitch;
 

	
 
		/* Adjust left & width */
 
		if (scroll_x >= 0) {
 
			dst += scroll_x;
 
		} else {
 
			src -= scroll_x;
 
		}
 

	
 
		uint tw = width + (scroll_x >= 0 ? -scroll_x : scroll_x);
 
		uint th = height - scroll_y;
 
		for (; th > 0; th--) {
 
			memcpy(dst, src, tw * sizeof(uint8));
 
			src -= _screen.pitch;
 
			dst -= _screen.pitch;
 
		}
 
	} else {
 
		/* Calculate pointers */
 
		dst = anim_buf + left + top * _screen.pitch;
 
		src = dst - scroll_y * _screen.pitch;
 

	
 
		/* Adjust left & width */
 
		if (scroll_x >= 0) {
 
			dst += scroll_x;
 
		} else {
 
			src -= scroll_x;
 
		}
 

	
 
		/* the y-displacement may be 0 therefore we have to use memmove,
 
		 * because source and destination may overlap */
 
		uint tw = width + (scroll_x >= 0 ? -scroll_x : scroll_x);
 
		uint th = height + scroll_y;
 
		for (; th > 0; th--) {
 
			memmove(dst, src, tw * sizeof(uint8));
 
			src += _screen.pitch;
 
			dst += _screen.pitch;
 
		}
 
	}
 

	
 
	Blitter_32bppBase::ScrollBuffer(video, left, top, width, height, scroll_x, scroll_y);
 
}
 

	
 
int Blitter_40bppAnim::BufferSize(int width, int height)
 
{
 
	return width * height * (sizeof(uint32) + sizeof(uint8));
 
}
 

	
 
Blitter::PaletteAnimation Blitter_40bppAnim::UsePaletteAnimation()
 
{
 
	return Blitter::PALETTE_ANIMATION_VIDEO_BACKEND;
 
}
 

	
 
bool Blitter_40bppAnim::NeedsAnimationBuffer()
 
{
 
	return true;
 
}
src/blitter/40bpp_anim.hpp
Show inline comments
 
new file 100644
 
/* $Id$ */
 

	
 
/*
 
 * This file is part of OpenTTD.
 
 * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
 
 * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 
 * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
 
 */
 

	
 
/** @file 40bpp_optimized.hpp Optimized 40 bpp blitter. */
 

	
 
#ifndef BLITTER_40BPP_OPTIMIZED_HPP
 
#define BLITTER_40BPP_OPTIMIZED_HPP
 

	
 

	
 
#include "32bpp_optimized.hpp"
 
#include "../video/video_driver.hpp"
 

	
 
/** The optimized 40 bpp blitter (for OpenGL video driver). */
 
class Blitter_40bppAnim : public Blitter_32bppOptimized {
 
public:
 

	
 
	// void *MoveTo(void *video, int x, int y) override;
 
	void SetPixel(void *video, int x, int y, uint8 colour) override;
 
	void DrawRect(void *video, int width, int height, uint8 colour) override;
 
	void CopyFromBuffer(void *video, const void *src, int width, int height) override;
 
	void CopyToBuffer(const void *video, void *dst, int width, int height) override;
 
	void CopyImageToBuffer(const void *video, void *dst, int width, int height, int dst_pitch) override;
 
	void ScrollBuffer(void *video, int &left, int &top, int &width, int &height, int scroll_x, int scroll_y) override;
 
	void Draw(Blitter::BlitterParams *bp, BlitterMode mode, ZoomLevel zoom) override;
 
	void DrawColourMappingRect(void *dst, int width, int height, PaletteID pal) override;
 
	Sprite *Encode(const SpriteLoader::Sprite *sprite, AllocatorProc *allocator) override;
 
	int BufferSize(int width, int height) override;
 
	Blitter::PaletteAnimation UsePaletteAnimation() override;
 
	bool NeedsAnimationBuffer() override;
 

	
 
	const char *GetName()  override { return "40bpp-anim"; }
 
	int GetBytesPerPixel()  override { return 5; }
 

	
 
	template <BlitterMode mode> void Draw(const Blitter::BlitterParams *bp, ZoomLevel zoom);
 

	
 
protected:
 
	static inline Colour RealizeBlendedColour(uint8 anim, Colour c)
 
	{
 
		return anim != 0 ? AdjustBrightness(LookupColourInPalette(anim), GetColourBrightness(c)) : c;
 
	}
 

	
 
};
 

	
 
/** Factory for the 40 bpp animated blitter (for OpenGL). */
 
class FBlitter_40bppAnim : public BlitterFactory {
 
protected:
 
	bool IsUsable() const override
 
	{
 
		return VideoDriver::GetInstance() == nullptr || VideoDriver::GetInstance()->HasAnimBuffer();
 
	}
 

	
 
public:
 
	FBlitter_40bppAnim() : BlitterFactory("40bpp-anim", "40bpp Animation Blitter (OpenGL)") {}
 
	Blitter *CreateInstance() override { return new Blitter_40bppAnim(); }
 
};
 

	
 
#endif /* BLITTER_40BPP_OPTIMIZED_HPP */
src/blitter/CMakeLists.txt
Show inline comments
 
@@ -32,6 +32,13 @@ add_files(
 
    CONDITION NOT OPTION_DEDICATED AND SSE_FOUND
 
)
 

	
 
add_files(
 
    40bpp_anim.cpp
 
    40bpp_anim.hpp
 
    CONDITION NOT OPTION_DEDICATED AND OPENGL_FOUND
 
)
 

	
 

	
 
if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU" OR CMAKE_CXX_COMPILER_ID STREQUAL "Clang" OR CMAKE_CXX_COMPILER_ID STREQUAL "AppleClang")
 
    set_compile_flags(
 
        32bpp_anim_sse2.cpp
src/gfxinit.cpp
Show inline comments
 
@@ -275,13 +275,14 @@ static bool SwitchNewGRFBlitter()
 
		uint animation; ///< 0: no support, 1: do support, 2: both
 
		uint min_base_depth, max_base_depth, min_grf_depth, max_grf_depth;
 
	} replacement_blitters[] = {
 
		{ "8bpp-optimized",  2,  8,  8,  8,  8 },
 
		{ "40bpp-anim",      2,  8, 32,  8, 32 },
 
#ifdef WITH_SSE
 
		{ "32bpp-sse4",      0, 32, 32,  8, 32 },
 
		{ "32bpp-ssse3",     0, 32, 32,  8, 32 },
 
		{ "32bpp-sse2",      0, 32, 32,  8, 32 },
 
		{ "32bpp-sse4-anim", 1, 32, 32,  8, 32 },
 
#endif
 
		{ "8bpp-optimized",  2,  8,  8,  8,  8 },
 
		{ "32bpp-optimized", 0,  8, 32,  8, 32 },
 
#ifdef WITH_SSE
 
		{ "32bpp-sse2-anim", 1,  8, 32,  8, 32 },
0 comments (0 inline, 0 general)