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/*
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* This file is part of OpenTTD.
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* 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.
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* 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.
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* 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/>.
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*/
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/** @file 40bpp_optimized.cpp Implementation of the optimized 40 bpp blitter. */
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#include "../stdafx.h"
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#include "../zoom_func.h"
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#include "../settings_type.h"
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#include "../video/video_driver.hpp"
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#include "40bpp_anim.hpp"
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#include "common.hpp"
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#include "../table/sprites.h"
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#include "../safeguards.h"
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/** Instantiation of the 40bpp with animation blitter factory. */
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static FBlitter_40bppAnim iFBlitter_40bppAnim;
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/** Cached black value. */
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static const Colour _black_colour(0, 0, 0);
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void Blitter_40bppAnim::SetPixel(void *video, int x, int y, uint8 colour)
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{
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if (_screen_disable_anim) {
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Blitter_32bppOptimized::SetPixel(video, x, y, colour);
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} else {
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size_t y_offset = static_cast<size_t>(y) * _screen.pitch;
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*((Colour *)video + x + y_offset) = _black_colour;
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VideoDriver::GetInstance()->GetAnimBuffer()[((uint32 *)video - (uint32 *)_screen.dst_ptr) + x + y_offset] = colour;
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}
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}
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void Blitter_40bppAnim::DrawRect(void *video, int width, int height, uint8 colour)
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{
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if (_screen_disable_anim) {
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/* This means our output is not to the screen, so we can't be doing any animation stuff, so use our parent DrawRect() */
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Blitter_32bppOptimized::DrawRect(video, width, height, colour);
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return;
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}
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assert(VideoDriver::GetInstance()->GetAnimBuffer() != nullptr);
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uint8 *anim_line = ((uint32 *)video - (uint32 *)_screen.dst_ptr) + VideoDriver::GetInstance()->GetAnimBuffer();
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do {
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Colour *dst = (Colour *)video;
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uint8 *anim = anim_line;
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for (int i = width; i > 0; i--) {
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*dst = _black_colour;
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*anim = colour;
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dst++;
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anim++;
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}
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video = (uint32 *)video + _screen.pitch;
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anim_line += _screen.pitch;
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} while (--height);
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}
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void Blitter_40bppAnim::DrawLine(void *video, int x, int y, int x2, int y2, int screen_width, int screen_height, uint8 colour, int width, int dash)
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{
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if (_screen_disable_anim) {
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/* This means our output is not to the screen, so we can't be doing any animation stuff, so use our parent DrawRect() */
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Blitter_32bppOptimized::DrawLine(video, x, y, x2, y2, screen_width, screen_height, colour, width, dash);
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return;
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}
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assert(VideoDriver::GetInstance()->GetAnimBuffer() != nullptr);
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uint8 *anim = ((uint32 *)video - (uint32 *)_screen.dst_ptr) + VideoDriver::GetInstance()->GetAnimBuffer();
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this->DrawLineGeneric(x, y, x2, y2, screen_width, screen_height, width, dash, [=](int x, int y) {
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*((Colour *)video + x + y * _screen.pitch) = _black_colour;
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*(anim + x + y * _screen.pitch) = colour;
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});
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}
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/**
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* Draws a sprite to a (screen) buffer. It is templated to allow faster operation.
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*
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* @tparam mode blitter mode
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* @param bp further blitting parameters
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* @param zoom zoom level at which we are drawing
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*/
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template <BlitterMode mode>
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inline void Blitter_40bppAnim::Draw(const Blitter::BlitterParams *bp, ZoomLevel zoom)
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{
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const SpriteData *src = (const SpriteData *)bp->sprite;
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/* src_px : each line begins with uint32 n = 'number of bytes in this line',
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* then n times is the Colour struct for this line */
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const Colour *src_px = (const Colour *)(src->data + src->offset[zoom][0]);
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/* src_n : each line begins with uint32 n = 'number of bytes in this line',
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* then interleaved stream of 'm' and 'n' channels. 'm' is remap,
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* 'n' is number of bytes with the same alpha channel class */
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const uint16 *src_n = (const uint16 *)(src->data + src->offset[zoom][1]);
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/* skip upper lines in src_px and src_n */
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for (uint i = bp->skip_top; i != 0; i--) {
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src_px = (const Colour *)((const byte *)src_px + *(const uint32 *)src_px);
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src_n = (const uint16 *)((const byte *)src_n + *(const uint32 *)src_n);
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}
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/* skip lines in dst */
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Colour *dst = (Colour *)bp->dst + bp->top * bp->pitch + bp->left;
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assert(VideoDriver::GetInstance()->GetAnimBuffer() != nullptr);
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uint8 *anim = VideoDriver::GetInstance()->GetAnimBuffer() + ((uint32 *)bp->dst - (uint32 *)_screen.dst_ptr) + bp->top * bp->pitch + bp->left;
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/* store so we don't have to access it via bp everytime (compiler assumes pointer aliasing) */
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const byte *remap = bp->remap;
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for (int y = 0; y < bp->height; y++) {
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/* next dst line begins here */
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Colour *dst_ln = dst + bp->pitch;
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uint8 *anim_ln = anim + bp->pitch;
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/* next src line begins here */
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const Colour *src_px_ln = (const Colour *)((const byte *)src_px + *(const uint32 *)src_px);
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src_px++;
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/* next src_n line begins here */
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const uint16 *src_n_ln = (const uint16 *)((const byte *)src_n + *(const uint32 *)src_n);
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src_n += 2;
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/* we will end this line when we reach this point */
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Colour *dst_end = dst + bp->skip_left;
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/* number of pixels with the same alpha channel class */
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uint n;
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while (dst < dst_end) {
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n = *src_n++;
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if (src_px->a == 0) {
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dst += n;
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src_px++;
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src_n++;
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if (dst > dst_end) anim += dst - dst_end;
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} else {
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if (dst + n > dst_end) {
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uint d = dst_end - dst;
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src_px += d;
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src_n += d;
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dst = dst_end - bp->skip_left;
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dst_end = dst + bp->width;
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n = std::min<uint>(n - d, (uint)bp->width);
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goto draw;
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}
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dst += n;
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src_px += n;
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src_n += n;
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}
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}
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dst -= bp->skip_left;
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dst_end -= bp->skip_left;
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dst_end += bp->width;
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while (dst < dst_end) {
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n = std::min<uint>(*src_n++, (uint)(dst_end - dst));
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if (src_px->a == 0) {
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anim += n;
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dst += n;
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src_px++;
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src_n++;
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continue;
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}
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draw:;
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switch (mode) {
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case BM_COLOUR_REMAP:
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case BM_CRASH_REMAP:
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if (src_px->a == 255) {
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do {
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uint8 m = GB(*src_n, 0, 8);
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/* In case the m-channel is zero, only apply the crash remap by darkening the RGB colour. */
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if (m == 0) {
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*dst = mode == BM_CRASH_REMAP ? this->MakeDark(*src_px) : *src_px;
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*anim = 0;
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} else {
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uint r = remap[m];
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if (r != 0) {
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*dst = src_px->data;
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*anim = r;
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}
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}
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anim++;
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dst++;
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src_px++;
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src_n++;
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} while (--n != 0);
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} else {
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do {
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uint8 m = GB(*src_n, 0, 8);
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Colour b = this->RealizeBlendedColour(*anim, *dst);
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if (m == 0) {
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Colour c = mode == BM_CRASH_REMAP ? this->MakeDark(*src_px) : *src_px;
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*dst = this->ComposeColourRGBANoCheck(c.r, c.g, c.b, src_px->a, b);
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*anim = 0;
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} else {
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uint r = remap[m];
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if (r != 0) {
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*dst = this->ComposeColourPANoCheck(this->LookupColourInPalette(r), src_px->a, b);
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*anim = 0; // Animation colours don't work with alpha-blending.
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}
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}
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anim++;
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dst++;
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src_px++;
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src_n++;
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} while (--n != 0);
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}
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break;
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case BM_BLACK_REMAP:
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do {
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*anim++ = 0;
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*dst++ = _black_colour;
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src_px++;
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src_n++;
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} while (--n != 0);
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break;
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case BM_TRANSPARENT:
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/* TODO -- We make an assumption here that the remap in fact is transparency, not some colour.
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* This is never a problem with the code we produce, but newgrfs can make it fail... or at least:
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* we produce a result the newgrf maker didn't expect ;) */
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/* Make the current colour a bit more black, so it looks like this image is transparent */
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src_n += n;
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if (src_px->a == 255) {
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src_px += n;
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do {
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/* If the anim buffer contains a color value, the image composition will
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* only look at the RGB brightness value. As such, we can simply darken the
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* RGB value to darken the anim color. */
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Colour b = *anim != 0 ? Colour(this->GetColourBrightness(*dst), 0, 0) : *dst;
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*dst = this->MakeTransparent(b, 3, 4);
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anim++;
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dst++;
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} while (--n != 0);
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} else {
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do {
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Colour b = this->RealizeBlendedColour(*anim, *dst);
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*dst = this->MakeTransparent(b, (256 * 4 - src_px->a), 256 * 4);
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*anim = 0; // Animation colours don't work with alpha-blending.
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anim++;
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dst++;
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src_px++;
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} while (--n != 0);
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}
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break;
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default:
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if (src_px->a == 255) {
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do {
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*anim++ = GB(*src_n, 0, 8);
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*dst++ = src_px->data;
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src_px++;
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src_n++;
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} while (--n != 0);
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break;
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} else {
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do {
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uint8 m = GB(*src_n, 0, 8);
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Colour b = this->RealizeBlendedColour(*anim, *dst);
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if (m == 0) {
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*dst = this->ComposeColourRGBANoCheck(src_px->r, src_px->g, src_px->b, src_px->a, b);
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*anim = 0;
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} else {
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*dst = this->ComposeColourPANoCheck(this->LookupColourInPalette(m), src_px->a, b);
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*anim = m;
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}
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anim++;
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dst++;
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src_px++;
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src_n++;
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} while (--n != 0);
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}
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}
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}
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dst = dst_ln;
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anim = anim_ln;
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src_px = src_px_ln;
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src_n = src_n_ln;
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}
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}
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/**
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* Draws a sprite to a (screen) buffer. Calls adequate templated function.
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*
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* @param bp further blitting parameters
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* @param mode blitter mode
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* @param zoom zoom level at which we are drawing
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*/
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void Blitter_40bppAnim::Draw(Blitter::BlitterParams *bp, BlitterMode mode, ZoomLevel zoom)
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{
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assert(_screen.dst_ptr != nullptr);
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if (_screen_disable_anim || VideoDriver::GetInstance()->GetAnimBuffer() == nullptr) {
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/* This means our output is not to the screen, so we can't be doing any animation stuff, so use our parent Draw() */
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Blitter_32bppOptimized::Draw<true>(bp, mode, zoom);
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return;
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}
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switch (mode) {
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default: NOT_REACHED();
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case BM_NORMAL: Draw<BM_NORMAL> (bp, zoom); return;
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case BM_COLOUR_REMAP: Draw<BM_COLOUR_REMAP>(bp, zoom); return;
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case BM_TRANSPARENT: Draw<BM_TRANSPARENT> (bp, zoom); return;
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case BM_CRASH_REMAP: Draw<BM_CRASH_REMAP> (bp, zoom); return;
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case BM_BLACK_REMAP: Draw<BM_BLACK_REMAP> (bp, zoom); return;
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}
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}
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void Blitter_40bppAnim::DrawColourMappingRect(void *dst, int width, int height, PaletteID pal)
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{
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if (_screen_disable_anim) {
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/* This means our output is not to the screen, so we can't be doing any animation stuff, so use our parent DrawColourMappingRect() */
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Blitter_32bppOptimized::DrawColourMappingRect(dst, width, height, pal);
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return;
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}
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Colour *udst = (Colour *)dst;
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uint8 *anim = VideoDriver::GetInstance()->GetAnimBuffer() + ((uint32 *)dst - (uint32 *)_screen.dst_ptr);
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if (pal == PALETTE_TO_TRANSPARENT) {
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/* If the anim buffer contains a color value, the image composition will
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* only look at the RGB brightness value. As such, we can simply darken the
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* RGB value to darken the anim color. */
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do {
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for (int i = 0; i != width; i++) {
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Colour b = *anim != 0 ? Colour(this->GetColourBrightness(*udst), 0, 0) : *udst;
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*udst = MakeTransparent(b, 154);
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udst++;
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anim++;
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}
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udst = udst - width + _screen.pitch;
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anim = anim - width + _screen.pitch;
|
|
|
|
} while (--height);
|
|
|
|
} else if (pal == PALETTE_NEWSPAPER) {
|
|
|
|
const uint8 *remap = GetNonSprite(pal, SpriteType::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, SpriteType::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);
|
|
|
|
}
|
|
|
|
|
|
|
|
size_t Blitter_40bppAnim::BufferSize(uint width, uint height)
|
|
|
|
{
|
|
|
|
return (sizeof(uint32) + sizeof(uint8)) * width * height;
|
|
|
|
}
|
|
|
|
|
|
|
|
Blitter::PaletteAnimation Blitter_40bppAnim::UsePaletteAnimation()
|
|
|
|
{
|
|
|
|
return Blitter::PALETTE_ANIMATION_VIDEO_BACKEND;
|
|
|
|
}
|
|
|
|
|
|
|
|
bool Blitter_40bppAnim::NeedsAnimationBuffer()
|
|
|
|
{
|
|
|
|
return true;
|
|
|
|
}
|