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HPL1: implement thumbnail method in metaengine

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grisenti 2022-08-23 15:38:57 +02:00 committed by Eugene Sandulenko
parent 8f8617a5d7
commit fa822ef0c2
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4 changed files with 50 additions and 0 deletions
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12
engines/hpl1/metaengine.cpp
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@ -25,6 +25,9 @@
#include "common/translation.h"
#include "hpl1/detection.h"
#include "hpl1/hpl1.h"
#include "hpl1/opengl.h"
#include "graphics/scaler.h"
#include "graphics/thumbnail.h"
#include "common/savefile.h"
#include "common/system.h"
@ -47,6 +50,15 @@ bool Hpl1MetaEngine::hasFeature(MetaEngineFeature f) const {
(f == kSupportsLoadingDuringStartup);
}
void Hpl1MetaEngine::getSavegameThumbnail(Graphics::Surface &thumbnail) {
Common::ScopedPtr<Graphics::Surface> screen = Hpl1::createViewportScreenshot();
Common::ScopedPtr<Graphics::Surface> scaledScreen(screen->scale( kThumbnailWidth, kThumbnailHeight2));
scaledScreen->convertToInPlace(Graphics::PixelFormat(2, 5, 6, 5, 0, 11, 5, 0, 0));
thumbnail.copyFrom(*scaledScreen);
screen->free();
scaledScreen->free();
}
static Common::U32String formatSave(const Common::String &filename) {
const int begin = filename.findFirstOf('.') + 1;
const int len = filename.findLastOf('_') - begin;

2
engines/hpl1/metaengine.h
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@ -39,6 +39,8 @@ public:
SaveStateList listSaves(const char *target) const override;
void getSavegameThumbnail(Graphics::Surface &thumbnail) override;
Common::Array<Common::Keymap *> initKeymaps(const char *target) const override;
};

27
engines/hpl1/opengl.cpp
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@ -21,6 +21,9 @@
#include "hpl1/opengl.h"
#include "hpl1/debug.h"
#include "common/rect.h"
#include "graphics/surface.h"
#include "common/system.h"
namespace Hpl1 {
@ -42,4 +45,28 @@ void checkOGLErrors(const char *function, const int line) {
logError(kDebugOpenGL, "Opengl error: \'%s\' in function %s - %d\n", getErrorString(code), function, line);
}
static Common::Rect getGLViewport() {
int viewportSize[4];
GL_CHECK(glGetIntegerv(GL_VIEWPORT, viewportSize));
return Common::Rect(viewportSize[0], viewportSize[1], viewportSize[2], viewportSize[3]);
}
static Graphics::PixelFormat getRGBAPixelFormat() {
#ifdef SCUMM_BIG_ENDIAN
return Graphics::PixelFormat(4, 8, 8, 8, 8, 24, 16, 8, 0);
#else
return Graphics::PixelFormat(4, 8, 8, 8, 8, 0, 8, 16, 24);
#endif
}
Common::ScopedPtr<Graphics::Surface> createViewportScreenshot() {
Common::ScopedPtr<Graphics::Surface> screen(new Graphics::Surface());
Common::Rect viewportSize = getGLViewport();
screen->create(viewportSize.width(), viewportSize.height(), getRGBAPixelFormat());
GL_CHECK(glReadPixels(viewportSize.left, g_system->getHeight() - viewportSize.bottom, viewportSize.width(), viewportSize.height(), GL_RGBA, GL_UNSIGNED_BYTE, screen->getPixels()));
screen->flipVertical(Common::Rect(screen->w, screen->h));
return screen;
}
} // End of namespace Hpl1

9
engines/hpl1/opengl.h
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@ -26,11 +26,20 @@
#define USE_GLAD
#include "graphics/opengl/system_headers.h"
#include "graphics/opengl/context.h"
#include "common/ptr.h"
namespace Graphics {
class Surface;
}
namespace Hpl1 {
void checkOGLErrors(const char *function, int line);
Common::ScopedPtr<Graphics::Surface> createViewportScreenshot();
}
#define GL_CHECK(x) {x; ::Hpl1::checkOGLErrors(__func__, __LINE__);}