thirdparty/scummvm
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OPENGL: Implement saveScreenshot().

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svn-id: r51299
This commit is contained in:
Alejandro Marzini 2010-07-26 06:52:58 +00:00
parent 856c6a18af
commit 738a9e78d8
3 changed files with 47 additions and 2 deletions
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45
backends/graphics/opengl/opengl-graphics.cpp
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@ -27,6 +27,7 @@
#include "backends/graphics/opengl/opengl-graphics.h"
#include "backends/graphics/opengl/glerrorcheck.h"
#include "common/file.h"
#include "common/mutex.h"
#include "common/translation.h"
#include "graphics/font.h"
@ -44,7 +45,8 @@ OpenGLGraphicsManager::OpenGLGraphicsManager()
_transactionMode(kTransactionNone),
_cursorNeedsRedraw(false), _cursorPaletteDisabled(true),
_cursorVisible(false), _cursorKeyColor(0),
_cursorTargetScale(1) {
_cursorTargetScale(1),
_formatBGR(false) {
memset(&_oldVideoMode, 0, sizeof(_oldVideoMode));
memset(&_videoMode, 0, sizeof(_videoMode));
@ -1104,7 +1106,46 @@ bool OpenGLGraphicsManager::notifyEvent(const Common::Event &event) {
}
bool OpenGLGraphicsManager::saveScreenshot(const char *filename) {
return false;
int width = _videoMode.hardwareWidth;
int height = _videoMode.hardwareHeight;
// Allocate space for screenshot
uint8 *pixels = new uint8[width * height * 3];
// Get pixel data from opengl buffer
if (_formatBGR)
glReadPixels(0, 0, width, height, GL_BGR, GL_UNSIGNED_BYTE, pixels);
else
glReadPixels(0, 0, width, height, GL_RGB, GL_UNSIGNED_BYTE, pixels);
// Open file
Common::DumpFile out;
out.open(filename);
// Write BMP header
out.writeByte('B');
out.writeByte('M');
out.writeUint32LE(height * width * 3 + 52);
out.writeUint32LE(0);
out.writeUint32LE(52);
out.writeUint32LE(40);
out.writeUint32LE(width);
out.writeUint32LE(height);
out.writeUint16LE(1);
out.writeUint16LE(24);
out.writeUint32LE(0);
out.writeUint32LE(0);
out.writeUint32LE(0);
out.writeUint32LE(0);
out.writeUint32LE(0);
out.writeUint32LE(0);
// Write pixel data to BMP
out.write(pixels, width * height * 3);
delete[] pixels;
return true;
}
#endif

2
backends/graphics/opengl/opengl-graphics.h
View file

@ -164,6 +164,8 @@ protected:
virtual void setScale(int newScale);
virtual void setAspectRatioCorrection(int mode);
bool _formatBGR;
//
// Game screen
//

2
backends/graphics/openglsdl/openglsdl-graphics.cpp
View file

@ -207,6 +207,8 @@ bool OpenGLSdlGraphicsManager::loadGFXMode() {
}
}
_formatBGR = _hwscreen->format->Rshift != 0;
return OpenGLGraphicsManager::loadGFXMode();
}