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go from softwareDecompress to decompress

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This commit is contained in:
Bret Curtis 2022-08-09 21:49:28 +02:00
parent 3fd87a219d
commit 1ebc6fa13e
1 changed files with 46 additions and 105 deletions
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151
components/sdlutil/sdlcursormanager.cpp
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@ -24,110 +24,6 @@
USE_GRAPHICSWINDOW() USE_GRAPHICSWINDOW()
#endif #endif
namespace CursorDecompression
{
class MyGraphicsContext {
public:
MyGraphicsContext(int w, int h)
{
osg::ref_ptr<osg::GraphicsContext::Traits> traits = new osg::GraphicsContext::Traits;
traits->x = 0;
traits->y = 0;
traits->width = w;
traits->height = h;
traits->red = 8;
traits->green = 8;
traits->blue = 8;
traits->alpha = 8;
traits->windowDecoration = false;
traits->doubleBuffer = false;
traits->sharedContext = nullptr;
traits->pbuffer = true;
osg::GraphicsContext::ScreenIdentifier si;
si.readDISPLAY();
if (si.displayNum<0) si.displayNum = 0;
traits->displayNum = si.displayNum;
traits->screenNum = si.screenNum;
traits->hostName = si.hostName;
_gc = osg::GraphicsContext::createGraphicsContext(traits.get());
if (!_gc)
{
Log(Debug::Warning) << "Failed to create pbuffer, failing back to normal graphics window.";
traits->pbuffer = false;
_gc = osg::GraphicsContext::createGraphicsContext(traits.get());
if (!_gc)
throw std::runtime_error("Failed to create graphics context for image decompression");
}
if (_gc.valid())
{
_gc->realize();
_gc->makeCurrent();
}
}
osg::ref_ptr<osg::GraphicsContext> getContext()
{
return _gc;
}
bool valid() const { return _gc.valid() && _gc->isRealized(); }
private:
osg::ref_ptr<osg::GraphicsContext> _gc;
};
SDLUtil::SurfaceUniquePtr softwareDecompress (osg::ref_ptr<osg::Image> source, float rotDegrees)
{
int width = source->s();
int height = source->t();
bool useAlpha = source->isImageTranslucent();
osg::ref_ptr<osg::Image> decompressedImage = new osg::Image;
decompressedImage->setFileName(source->getFileName());
decompressedImage->allocateImage(width, height, 1, useAlpha ? GL_RGBA : GL_RGB, GL_UNSIGNED_BYTE);
for (int s=0; s<width; ++s)
for (int t=0; t<height; ++t)
decompressedImage->setColor(source->getColor(s,t,0), s,t,0);
Uint32 redMask = 0x000000ff;
Uint32 greenMask = 0x0000ff00;
Uint32 blueMask = 0x00ff0000;
Uint32 alphaMask = useAlpha ? 0xff000000 : 0;
SDL_Surface *cursorSurface = SDL_CreateRGBSurfaceFrom(decompressedImage->data(),
width,
height,
decompressedImage->getPixelSizeInBits(),
decompressedImage->getRowSizeInBytes(),
redMask,
greenMask,
blueMask,
alphaMask);
SDL_Surface *targetSurface = SDL_CreateRGBSurface(0, width, height, 32, redMask, greenMask, blueMask, alphaMask);
SDL_Renderer *renderer = SDL_CreateSoftwareRenderer(targetSurface);
SDL_RenderClear(renderer);
SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, "1");
SDL_Texture *cursorTexture = SDL_CreateTextureFromSurface(renderer, cursorSurface);
SDL_RenderCopyEx(renderer, cursorTexture, nullptr, nullptr, -rotDegrees, nullptr, SDL_FLIP_VERTICAL);
SDL_DestroyTexture(cursorTexture);
SDL_FreeSurface(cursorSurface);
SDL_DestroyRenderer(renderer);
return SDLUtil::SurfaceUniquePtr(targetSurface, SDL_FreeSurface);
}
}
namespace SDLUtil namespace SDLUtil
{ {
@ -190,13 +86,58 @@ namespace SDLUtil
#endif #endif
} }
SDLUtil::SurfaceUniquePtr decompress(osg::ref_ptr<osg::Image> source, float rotDegrees)
{
int width = source->s();
int height = source->t();
bool useAlpha = source->isImageTranslucent();
osg::ref_ptr<osg::Image> decompressedImage = new osg::Image;
decompressedImage->setFileName(source->getFileName());
decompressedImage->allocateImage(width, height, 1, useAlpha ? GL_RGBA : GL_RGB, GL_UNSIGNED_BYTE);
for (int s=0; s<width; ++s)
for (int t=0; t<height; ++t)
decompressedImage->setColor(source->getColor(s,t,0), s,t,0);
Uint32 redMask = 0x000000ff;
Uint32 greenMask = 0x0000ff00;
Uint32 blueMask = 0x00ff0000;
Uint32 alphaMask = useAlpha ? 0xff000000 : 0;
SDL_Surface *cursorSurface = SDL_CreateRGBSurfaceFrom(decompressedImage->data(),
width,
height,
decompressedImage->getPixelSizeInBits(),
decompressedImage->getRowSizeInBytes(),
redMask,
greenMask,
blueMask,
alphaMask);
SDL_Surface *targetSurface = SDL_CreateRGBSurface(0, width, height, 32, redMask, greenMask, blueMask, alphaMask);
SDL_Renderer *renderer = SDL_CreateSoftwareRenderer(targetSurface);
SDL_RenderClear(renderer);
SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, "1");
SDL_Texture *cursorTexture = SDL_CreateTextureFromSurface(renderer, cursorSurface);
SDL_RenderCopyEx(renderer, cursorTexture, nullptr, nullptr, -rotDegrees, nullptr, SDL_FLIP_VERTICAL);
SDL_DestroyTexture(cursorTexture);
SDL_FreeSurface(cursorSurface);
SDL_DestroyRenderer(renderer);
return SDLUtil::SurfaceUniquePtr(targetSurface, SDL_FreeSurface);
}
void SDLCursorManager::_createCursorFromResource(const std::string& name, int rotDegrees, osg::Image* image, Uint8 hotspot_x, Uint8 hotspot_y) void SDLCursorManager::_createCursorFromResource(const std::string& name, int rotDegrees, osg::Image* image, Uint8 hotspot_x, Uint8 hotspot_y)
{ {
if (mCursorMap.find(name) != mCursorMap.end()) if (mCursorMap.find(name) != mCursorMap.end())
return; return;
try { try {
auto surface = CursorDecompression::softwareDecompress(image, static_cast<float>(rotDegrees)); auto surface = decompress(image, static_cast<float>(rotDegrees));
//set the cursor and store it for later //set the cursor and store it for later
SDL_Cursor* curs = SDL_CreateColorCursor(surface.get(), hotspot_x, hotspot_y); SDL_Cursor* curs = SDL_CreateColorCursor(surface.get(), hotspot_x, hotspot_y);