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/*
* 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 32bpp_sse2.hpp SSE2 32 bpp blitter. */
#ifndef BLITTER_32BPP_SSE2_HPP
#define BLITTER_32BPP_SSE2_HPP
#ifdef WITH_SSE
#ifndef SSE_VERSION
#define SSE_VERSION 2
#endif
#ifndef FULL_ANIMATION
#define FULL_ANIMATION 0
#endif
#include "32bpp_sse_type.h"
/** Base methods for 32bpp SSE blitters. */
class Blitter_32bppSSE_Base {
public:
virtual ~Blitter_32bppSSE_Base() {}
struct MapValue {
uint8 m;
uint8 v;
};
assert_compile(sizeof(MapValue) == 2);
/** Helper for creating specialised functions for specific optimisations. */
enum ReadMode {
RM_WITH_SKIP, ///< Use normal code for skipping empty pixels.
RM_WITH_MARGIN, ///< Use cached number of empty pixels at begin and end of line to reduce work.
RM_NONE, ///< No specialisation.
};
/** Helper for creating specialised functions for the case where the sprite width is odd or even. */
enum BlockType {
BT_EVEN, ///< An even number of pixels in the width; no need for a special case for the last pixel.
BT_ODD, ///< An odd number of pixels in the width; special case for the last pixel.
BT_NONE, ///< No specialisation for either case.
};
/** Helper for using specialised functions designed to prevent whenever it's possible things like:
* - IO (reading video buffer),
* - calculations (alpha blending),
* - heavy branching (remap lookups and animation buffer handling).
*/
enum SpriteFlags {
SF_NONE = 0,
SF_TRANSLUCENT = 1 << 1, ///< The sprite has at least 1 translucent pixel.
SF_NO_REMAP = 1 << 2, ///< The sprite has no remappable colour pixel.
SF_NO_ANIM = 1 << 3, ///< The sprite has no palette animated pixel.
};
/** Data stored about a (single) sprite. */
struct SpriteInfo {
uint32 sprite_offset; ///< The offset to the sprite data.
uint32 mv_offset; ///< The offset to the map value data.
uint16 sprite_line_size; ///< The size of a single line (pitch).
uint16 sprite_width; ///< The width of the sprite.
};
struct SpriteData {
SpriteFlags flags;
SpriteInfo infos[ZOOM_LVL_COUNT];
byte data[]; ///< Data, all zoomlevels.
};
Sprite *Encode(const SpriteLoader::Sprite *sprite, AllocatorProc *allocator);
};
DECLARE_ENUM_AS_BIT_SET(Blitter_32bppSSE_Base::SpriteFlags);
/** The SSE2 32 bpp blitter (without palette animation). */
class Blitter_32bppSSE2 : public Blitter_32bppSimple, public Blitter_32bppSSE_Base {
public:
void Draw(Blitter::BlitterParams *bp, BlitterMode mode, ZoomLevel zoom) override;
template <BlitterMode mode, Blitter_32bppSSE_Base::ReadMode read_mode, Blitter_32bppSSE_Base::BlockType bt_last, bool translucent>
void Draw(const Blitter::BlitterParams *bp, ZoomLevel zoom);
Sprite *Encode(const SpriteLoader::Sprite *sprite, AllocatorProc *allocator) override {
return Blitter_32bppSSE_Base::Encode(sprite, allocator);
}
const char *GetName() override { return "32bpp-sse2"; }
};
/** Factory for the SSE2 32 bpp blitter (without palette animation). */
class FBlitter_32bppSSE2 : public BlitterFactory {
public:
FBlitter_32bppSSE2() : BlitterFactory("32bpp-sse2", "32bpp SSE2 Blitter (no palette animation)", HasCPUIDFlag(1, 3, 26)) {}
Blitter *CreateInstance() override { return new Blitter_32bppSSE2(); }
};
#endif /* WITH_SSE */
#endif /* BLITTER_32BPP_SSE2_HPP */
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