mirror of
https://github.com/libretro/scummvm.git
synced 2024-12-05 00:36:57 +00:00
317 lines
12 KiB
C++
317 lines
12 KiB
C++
/* ScummVM - Graphic Adventure Engine
|
|
*
|
|
* ScummVM is the legal property of its developers, whose names
|
|
* are too numerous to list here. Please refer to the COPYRIGHT
|
|
* file distributed with this source distribution.
|
|
*
|
|
* This program 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, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
*/
|
|
|
|
#ifndef GRAPHICS_BLIT_H
|
|
#define GRAPHICS_BLIT_H
|
|
|
|
#include "graphics/pixelformat.h"
|
|
#include "graphics/transform_struct.h"
|
|
|
|
namespace Common {
|
|
struct Point;
|
|
}
|
|
|
|
class BlendBlitUnfilteredTestSuite;
|
|
|
|
namespace Graphics {
|
|
|
|
/**
|
|
* @defgroup graphics_blit Blitting
|
|
* @ingroup graphics
|
|
*
|
|
* @brief Graphics blitting operations.
|
|
*
|
|
* @{
|
|
*/
|
|
|
|
struct TransformStruct;
|
|
|
|
/** Converting a palette for use with crossBlitMap(). */
|
|
inline static void convertPaletteToMap(uint32 *dst, const byte *src, uint colors, const Graphics::PixelFormat &format) {
|
|
while (colors-- > 0) {
|
|
*dst++ = format.RGBToColor(src[0], src[1], src[2]);
|
|
src += 3;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Blits a rectangle.
|
|
*
|
|
* @param dst the buffer which will receive the converted graphics data
|
|
* @param src the buffer containing the original graphics data
|
|
* @param dstPitch width in bytes of one full line of the dest buffer
|
|
* @param srcPitch width in bytes of one full line of the source buffer
|
|
* @param w the width of the graphics data
|
|
* @param h the height of the graphics data
|
|
* @param bytesPerPixel the number of bytes per pixel
|
|
*/
|
|
void copyBlit(byte *dst, const byte *src,
|
|
const uint dstPitch, const uint srcPitch,
|
|
const uint w, const uint h,
|
|
const uint bytesPerPixel);
|
|
|
|
/**
|
|
* Blits a rectangle with a transparent color key.
|
|
*
|
|
* @param dst the buffer which will receive the converted graphics data
|
|
* @param src the buffer containing the original graphics data
|
|
* @param dstPitch width in bytes of one full line of the dest buffer
|
|
* @param srcPitch width in bytes of one full line of the source buffer
|
|
* @param w the width of the graphics data
|
|
* @param h the height of the graphics data
|
|
* @param bytesPerPixel the number of bytes per pixel
|
|
* @param key the transparent color key
|
|
*/
|
|
bool keyBlit(byte *dst, const byte *src,
|
|
const uint dstPitch, const uint srcPitch,
|
|
const uint w, const uint h,
|
|
const uint bytesPerPixel, const uint32 key);
|
|
|
|
/**
|
|
* Blits a rectangle from one graphical format to another.
|
|
*
|
|
* @param dst the buffer which will receive the converted graphics data
|
|
* @param src the buffer containing the original graphics data
|
|
* @param dstPitch width in bytes of one full line of the dest buffer
|
|
* @param srcPitch width in bytes of one full line of the source buffer
|
|
* @param w the width of the graphics data
|
|
* @param h the height of the graphics data
|
|
* @param dstFmt the desired pixel format
|
|
* @param srcFmt the original pixel format
|
|
* @return true if conversion completes successfully,
|
|
* false if there is an error.
|
|
*
|
|
* @note Blitting to a 3Bpp destination is not supported
|
|
* @note This can convert a surface in place, regardless of the
|
|
* source and destination format, as long as there is enough
|
|
* space for the destination. The dstPitch / srcPitch ratio
|
|
* must at least equal the dstBpp / srcBpp ratio for
|
|
* dstPitch >= srcPitch and at most dstBpp / srcBpp for
|
|
* dstPitch < srcPitch though.
|
|
*/
|
|
bool crossBlit(byte *dst, const byte *src,
|
|
const uint dstPitch, const uint srcPitch,
|
|
const uint w, const uint h,
|
|
const Graphics::PixelFormat &dstFmt, const Graphics::PixelFormat &srcFmt);
|
|
|
|
/**
|
|
* Blits a rectangle from one graphical format to another with a transparent color key.
|
|
*
|
|
* @param dst the buffer which will receive the converted graphics data
|
|
* @param src the buffer containing the original graphics data
|
|
* @param dstPitch width in bytes of one full line of the dest buffer
|
|
* @param srcPitch width in bytes of one full line of the source buffer
|
|
* @param w the width of the graphics data
|
|
* @param h the height of the graphics data
|
|
* @param dstFmt the desired pixel format
|
|
* @param srcFmt the original pixel format
|
|
* @param key the transparent color key in the original pixel format
|
|
* @return true if conversion completes successfully,
|
|
* false if there is an error.
|
|
*
|
|
* @note Blitting to a 3Bpp destination is not supported
|
|
* @note This can convert a surface in place, regardless of the
|
|
* source and destination format, as long as there is enough
|
|
* space for the destination. The dstPitch / srcPitch ratio
|
|
* must at least equal the dstBpp / srcBpp ratio for
|
|
* dstPitch >= srcPitch and at most dstBpp / srcBpp for
|
|
* dstPitch < srcPitch though.
|
|
*/
|
|
bool crossKeyBlit(byte *dst, const byte *src,
|
|
const uint dstPitch, const uint srcPitch,
|
|
const uint w, const uint h,
|
|
const Graphics::PixelFormat &dstFmt, const Graphics::PixelFormat &srcFmt, const uint32 key);
|
|
|
|
bool crossBlitMap(byte *dst, const byte *src,
|
|
const uint dstPitch, const uint srcPitch,
|
|
const uint w, const uint h,
|
|
const uint bytesPerPixel, const uint32 *map);
|
|
|
|
bool crossKeyBlitMap(byte *dst, const byte *src,
|
|
const uint dstPitch, const uint srcPitch,
|
|
const uint w, const uint h,
|
|
const uint bytesPerPixel, const uint32 *map, const uint32 key);
|
|
|
|
bool scaleBlit(byte *dst, const byte *src,
|
|
const uint dstPitch, const uint srcPitch,
|
|
const uint dstW, const uint dstH,
|
|
const uint srcW, const uint srcH,
|
|
const Graphics::PixelFormat &fmt,
|
|
const byte flip = 0);
|
|
|
|
bool scaleBlitBilinear(byte *dst, const byte *src,
|
|
const uint dstPitch, const uint srcPitch,
|
|
const uint dstW, const uint dstH,
|
|
const uint srcW, const uint srcH,
|
|
const Graphics::PixelFormat &fmt,
|
|
const byte flip = 0);
|
|
|
|
bool rotoscaleBlit(byte *dst, const byte *src,
|
|
const uint dstPitch, const uint srcPitch,
|
|
const uint dstW, const uint dstH,
|
|
const uint srcW, const uint srcH,
|
|
const Graphics::PixelFormat &fmt,
|
|
const TransformStruct &transform,
|
|
const Common::Point &newHotspot);
|
|
|
|
bool rotoscaleBlitBilinear(byte *dst, const byte *src,
|
|
const uint dstPitch, const uint srcPitch,
|
|
const uint dstW, const uint dstH,
|
|
const uint srcW, const uint srcH,
|
|
const Graphics::PixelFormat &fmt,
|
|
const TransformStruct &transform,
|
|
const Common::Point &newHotspot);
|
|
|
|
bool applyColorKey(byte *dst, const byte *src,
|
|
const uint dstPitch, const uint srcPitch,
|
|
const uint w, const uint h,
|
|
const Graphics::PixelFormat &format, const bool overwriteAlpha,
|
|
const uint8 rKey, const uint8 gKey, const uint8 bKey,
|
|
const uint8 rNew, const uint8 gNew, const uint8 bNew);
|
|
|
|
bool setAlpha(byte *dst, const byte *src,
|
|
const uint dstPitch, const uint srcPitch,
|
|
const uint w, const uint h,
|
|
const Graphics::PixelFormat &format,
|
|
const bool skipTransparent, const uint8 alpha);
|
|
|
|
// This is a class so that we can declare certain things as private
|
|
class BlendBlit {
|
|
private:
|
|
struct Args {
|
|
bool rgbmod, alphamod;
|
|
int xp, yp;
|
|
int inStep, inoStep;
|
|
const byte *ino;
|
|
byte *outo;
|
|
|
|
int scaleX, scaleY, scaleXoff, scaleYoff;
|
|
uint dstPitch;
|
|
uint width, height;
|
|
uint32 color;
|
|
int flipping;
|
|
|
|
Args(byte *dst, const byte *src,
|
|
const uint dstPitch, const uint srcPitch,
|
|
const int posX, const int posY,
|
|
const uint width, const uint height,
|
|
const int scaleX, const int scaleY,
|
|
const int scaleXsrcOff, const int scaleYsrcOff,
|
|
const uint32 colorMod, const uint flipping);
|
|
};
|
|
|
|
#ifdef SCUMMVM_NEON
|
|
static void blitNEON(Args &args, const TSpriteBlendMode &blendMode, const AlphaType &alphaType);
|
|
#endif
|
|
#ifdef SCUMMVM_SSE2
|
|
static void blitSSE2(Args &args, const TSpriteBlendMode &blendMode, const AlphaType &alphaType);
|
|
#endif
|
|
#ifdef SCUMMVM_AVX2
|
|
static void blitAVX2(Args &args, const TSpriteBlendMode &blendMode, const AlphaType &alphaType);
|
|
#endif
|
|
static void blitGeneric(Args &args, const TSpriteBlendMode &blendMode, const AlphaType &alphaType);
|
|
#undef LOGIC_FUNCS_EXT
|
|
|
|
typedef void(*BlitFunc)(Args &, const TSpriteBlendMode &, const AlphaType &);
|
|
static BlitFunc blitFunc;
|
|
friend class ::BlendBlitUnfilteredTestSuite;
|
|
friend class BlendBlitImpl;
|
|
|
|
public:
|
|
static const int SCALE_THRESHOLD = 0x100;
|
|
static const int kBModShift = 8;
|
|
static const int kGModShift = 16;
|
|
static const int kRModShift = 24;
|
|
static const int kAModShift = 0;
|
|
|
|
static const uint32 kBModMask = 0x0000ff00;
|
|
static const uint32 kGModMask = 0x00ff0000;
|
|
static const uint32 kRModMask = 0xff000000;
|
|
static const uint32 kAModMask = 0x000000ff;
|
|
static const uint32 kRGBModMask = (kRModMask | kGModMask | kBModMask);
|
|
|
|
#ifdef SCUMM_LITTLE_ENDIAN
|
|
static const int kAIndex = 0;
|
|
static const int kBIndex = 1;
|
|
static const int kGIndex = 2;
|
|
static const int kRIndex = 3;
|
|
#else
|
|
static const int kAIndex = 3;
|
|
static const int kBIndex = 2;
|
|
static const int kGIndex = 1;
|
|
static const int kRIndex = 0;
|
|
#endif
|
|
|
|
static inline int getScaleFactor(int srcSize, int dstSize) {
|
|
return SCALE_THRESHOLD * srcSize / dstSize;
|
|
}
|
|
|
|
/**
|
|
* Returns the pixel format all operations of BlendBlit::blit support.
|
|
*
|
|
* Use MS_ARGB and MS_RGB to quickly make a color in this format.
|
|
* MS_ARGB/RGB are found in graphics/transform_struct.h
|
|
*
|
|
* @return Supported pixel format.
|
|
*/
|
|
static inline PixelFormat getSupportedPixelFormat() {
|
|
return PixelFormat(4, 8, 8, 8, 8, 24, 16, 8, 0);
|
|
}
|
|
|
|
/**
|
|
* Optimized version of doBlit to be used with alpha blended blitting
|
|
* NOTE: Can only be used with BlendBlit::getSupportedPixelFormat format
|
|
* @param dst a pointer to the destination buffer (can be offseted by pixels)
|
|
* @param src a pointer to the source buffer (can be offseted by pixels)
|
|
* @param dstPitch destination pitch
|
|
* @param srcPitch source pitch
|
|
* @param posX where src will be blitted to (onto dest)
|
|
* @param posY where src will be blitted to (onto dest)
|
|
* @param width width of the input surface
|
|
* @param height height of the input surface
|
|
* @param scaleX scale factor to use when blitting (src / dst) (0.5 for 2x scale) use BlendBlit::SCALE_THRESHOLD
|
|
* @param scaleY scale factor to use when blitting (src / dst) (0.5 for 2x scale) use BlendBlit::SCALE_THRESHOLD
|
|
* @param scaleXsrcOff since you can only offset the *src pointer to effectivly
|
|
* get a different part of the source image rendered, it can only go in
|
|
* 1 pixel chunks, so this fixes that by added a little offset
|
|
* @param scaleYsrcOff same as the X one
|
|
* @param colorMod the color to multiply by. (0xffffffff does no multiplication and has 0 overhead usually)
|
|
* @param flipping flipping flags used with Graphics::FLIP_FLAGS
|
|
* @param blendMode the blending mode to be used
|
|
* @param alphaType the alpha mixing mode to be used
|
|
*/
|
|
static void blit(byte *dst, const byte *src,
|
|
const uint dstPitch, const uint srcPitch,
|
|
const int posX, const int posY,
|
|
const uint width, const uint height,
|
|
const int scaleX, const int scaleY,
|
|
const int scaleXsrcOff, const int scaleYsrcOff,
|
|
const uint32 colorMod, const uint flipping,
|
|
const TSpriteBlendMode blendMode,
|
|
const AlphaType alphaType);
|
|
|
|
}; // End of class BlendBlit
|
|
|
|
/** @} */
|
|
} // End of namespace Graphics
|
|
|
|
#endif // GRAPHICS_BLIT_H
|