mirrors
/
OpenTTD
mirror of https://github.com/OpenTTD/OpenTTD.git
2
0
Fork 0
Code Issues Projects Releases Wiki Activity
OpenTTD/src/blitter/40bpp_anim.cpp

538 lines
16 KiB
C++
Raw Blame History

/*
* 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 "../palette_func.h"
#include "40bpp_anim.hpp"
#include "common.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_t colour)
{
if (_screen_disable_anim) {
Blitter_32bppOptimized::SetPixel(video, x, y, colour);
} else {
size_t y_offset = static_cast<size_t>(y) * _screen.pitch;
*((Colour *)video + x + y_offset) = _black_colour;
VideoDriver::GetInstance()->GetAnimBuffer()[((uint32_t *)video - (uint32_t *)_screen.dst_ptr) + x + y_offset] = colour;
}
}
void Blitter_40bppAnim::DrawRect(void *video, int width, int height, uint8_t 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_t *anim_line = ((uint32_t *)video - (uint32_t *)_screen.dst_ptr) + VideoDriver::GetInstance()->GetAnimBuffer();
do {
Colour *dst = (Colour *)video;
uint8_t *anim = anim_line;
for (int i = width; i > 0; i--) {
*dst = _black_colour;
*anim = colour;
dst++;
anim++;
}
video = (uint32_t *)video + _screen.pitch;
anim_line += _screen.pitch;
} while (--height);
}
void Blitter_40bppAnim::DrawLine(void *video, int x, int y, int x2, int y2, int screen_width, int screen_height, uint8_t colour, int width, int dash)
{
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::DrawLine(video, x, y, x2, y2, screen_width, screen_height, colour, width, dash);
return;
}
assert(VideoDriver::GetInstance()->GetAnimBuffer() != nullptr);
uint8_t *anim = ((uint32_t *)video - (uint32_t *)_screen.dst_ptr) + VideoDriver::GetInstance()->GetAnimBuffer();
this->DrawLineGeneric(x, y, x2, y2, screen_width, screen_height, width, dash, [=](int x, int y) {
*((Colour *)video + x + y * _screen.pitch) = _black_colour;
*(anim + x + y * _screen.pitch) = colour;
});
}
/**
* 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_t 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_t 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_t *src_n = (const uint16_t *)(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 uint8_t *)src_px + *(const uint32_t *)src_px);
src_n = (const uint16_t *)((const uint8_t *)src_n + *(const uint32_t *)src_n);
}
/* skip lines in dst */
Colour *dst = (Colour *)bp->dst + bp->top * bp->pitch + bp->left;
assert(VideoDriver::GetInstance()->GetAnimBuffer() != nullptr);
uint8_t *anim = VideoDriver::GetInstance()->GetAnimBuffer() + ((uint32_t *)bp->dst - (uint32_t *)_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 uint8_t *remap = bp->remap;
for (int y = 0; y < bp->height; y++) {
/* next dst line begins here */
Colour *dst_ln = dst + bp->pitch;
uint8_t *anim_ln = anim + bp->pitch;
/* next src line begins here */
const Colour *src_px_ln = (const Colour *)((const uint8_t *)src_px + *(const uint32_t *)src_px);
src_px++;
/* next src_n line begins here */
const uint16_t *src_n_ln = (const uint16_t *)((const uint8_t *)src_n + *(const uint32_t *)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_t 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_t 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:
/* 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;
case BM_TRANSPARENT_REMAP:
/* Apply custom transparency remap. */
src_n += n;
if (src_px->a != 0) {
src_px += n;
do {
if (*anim != 0) {
*anim = remap[*anim];
} else {
*dst = this->LookupColourInPalette(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 {
*anim++ = GB(*src_n, 0, 8);
*dst++ = src_px->data;
src_px++;
src_n++;
} while (--n != 0);
break;
} else {
do {
uint8_t 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<true>(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_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;
}
}
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_t *anim = VideoDriver::GetInstance()->GetAnimBuffer() + ((uint32_t *)dst - (uint32_t *)_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_t *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_t *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::SpriteCollection &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_t *)_screen.dst_ptr + _screen.width + _screen.height * _screen.pitch);
uint32_t *dst = (uint32_t *)video;
const uint32_t *usrc = (const uint32_t *)src;
uint8_t *anim_buf = VideoDriver::GetInstance()->GetAnimBuffer();
if (anim_buf == nullptr) return;
uint8_t *anim_line = ((uint32_t *)video - (uint32_t *)_screen.dst_ptr) + anim_buf;
for (; height > 0; height--) {
memcpy(dst, usrc, width * sizeof(uint32_t));
usrc += width;
dst += _screen.pitch;
/* Copy back the anim-buffer */
memcpy(anim_line, usrc, width * sizeof(uint8_t));
usrc = (const uint32_t *)((const uint8_t *)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_t *)_screen.dst_ptr + _screen.width + _screen.height * _screen.pitch);
uint32_t *udst = (uint32_t *)dst;
const uint32_t *src = (const uint32_t *)video;
uint8_t *anim_buf = VideoDriver::GetInstance()->GetAnimBuffer();
if (anim_buf == nullptr) return;
const uint8_t *anim_line = ((const uint32_t *)video - (uint32_t *)_screen.dst_ptr) + anim_buf;
for (; height > 0; height--) {
memcpy(udst, src, width * sizeof(uint32_t));
src += _screen.pitch;
udst += width;
/* Copy the anim-buffer */
memcpy(udst, anim_line, width * sizeof(uint8_t));
udst = (uint32_t *)((uint8_t *)udst + width);
anim_line += _screen.pitch;
}
}
void Blitter_40bppAnim::CopyImageToBuffer(const void *video, void *dst, int width, int height, int dst_pitch)
{
uint8_t *anim_buf = VideoDriver::GetInstance()->GetAnimBuffer();
if (anim_buf == nullptr) {
Blitter_32bppOptimized::CopyImageToBuffer(video, dst, width, height, dst_pitch);
return;
}
uint32_t *udst = (uint32_t *)dst;
const uint32_t *src = (const uint32_t *)video;
const uint8_t *anim_line = ((const uint32_t *)video - (uint32_t *)_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_t *)_screen.dst_ptr + _screen.width + _screen.height * _screen.pitch);
uint8_t *anim_buf = VideoDriver::GetInstance()->GetAnimBuffer();
uint8_t *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_t));
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_t));
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_t) + sizeof(uint8_t)) * width * height;
}
Blitter::PaletteAnimation Blitter_40bppAnim::UsePaletteAnimation()
{
return Blitter::PALETTE_ANIMATION_VIDEO_BACKEND;
}
bool Blitter_40bppAnim::NeedsAnimationBuffer()
{
return true;
}
Reference in New Issue View Git Blame Copy Permalink