/**
* Main entrance point, obviously.
* Sets up some stuff then passes control to glutMainLoop() which never
* returns.
*/
int main(int argc, char* argv[])
{
if (argc > 4 || argc < 3) {
std::cerr << "USAGE: depixeler [xRes] [yRes] [PNG]" << std::endl;
exit(1);
}
xRes = atoi(argv[1]);
yRes = atoi(argv[2]);
assert(xRes >= 0);
assert(yRes >= 0);
string pngFile = argv[3];
std::cout << "the png file is: " << pngFile << std::endl;
readTex(pngFile);
// OpenGL will take out any arguments intended for its use here.
// Useful ones are -display and -gldebug.
glutInit(&argc, argv);
// Get a double-buffered, depth-buffer-enabled window, with an
// alpha channel.
// These options aren't really necessary but are here for examples.
glutInitDisplayMode(GLUT_RGBA | GLUT_DOUBLE | GLUT_DEPTH);
glutInitWindowSize(xRes*2, yRes);
glutInitWindowPosition(300, 100);
glutCreateWindow("CS174 Project - Depixeler");
initGL();
// set up GLUT callbacks.
glutDisplayFunc(redraw);
glutReshapeFunc(resize);
glutKeyboardFunc(keyfunc);
glutMouseFunc(mouseButton);
glClearColor(0.0, 0.0, 0.0, 0.0); // set background color to black
// From here on, GLUT has control,
glutMainLoop();
// so we should never get to this point.
return 1;
}
//---------------------------------------------------------------------------
// creates a new tex, fills it out, adds to a linked list
//
void CTexture::add()
{
tTexture *newTex = new tTexture;
memset(newTex, 0, sizeof(tTexture)); // init the texture
newTex->next = NULL;
newTex->prev = NULL;
newTex->texFilename = NULL;
newTex->uOffset = 0;
newTex->vOffset = 0;
newTex->face = GL_FRONT;
newTex->uTile = 1;
newTex->vTile = 1;
newTex->isTiled = 0;
newTex->shine = 0.5f;
newTex->shineStrength = 0.5f;
newTex->isDecal = 1; // for now
readTex(newTex);
linkTex(newTex);
numTextures++;
}
void GrConfigConversionEffect::TestForPreservingPMConversions(GrContext* context,
PMConversion* pmToUPMRule,
PMConversion* upmToPMRule) {
*pmToUPMRule = kNone_PMConversion;
*upmToPMRule = kNone_PMConversion;
SkAutoTMalloc<uint32_t> data(256 * 256 * 3);
uint32_t* srcData = data.get();
uint32_t* firstRead = data.get() + 256 * 256;
uint32_t* secondRead = data.get() + 2 * 256 * 256;
// Fill with every possible premultiplied A, color channel value. There will be 256-y duplicate
// values in row y. We set r,g, and b to the same value since they are handled identically.
for (int y = 0; y < 256; ++y) {
for (int x = 0; x < 256; ++x) {
uint8_t* color = reinterpret_cast<uint8_t*>(&srcData[256*y + x]);
color[3] = y;
color[2] = SkTMin(x, y);
color[1] = SkTMin(x, y);
color[0] = SkTMin(x, y);
}
}
GrSurfaceDesc desc;
desc.fFlags = kRenderTarget_GrSurfaceFlag;
desc.fWidth = 256;
desc.fHeight = 256;
desc.fConfig = kRGBA_8888_GrPixelConfig;
SkAutoTUnref<GrTexture> readTex(context->textureProvider()->createTexture(desc, true, nullptr, 0));
if (!readTex.get()) {
return;
}
SkAutoTUnref<GrTexture> tempTex(context->textureProvider()->createTexture(desc, true, nullptr, 0));
if (!tempTex.get()) {
return;
}
desc.fFlags = kNone_GrSurfaceFlags;
SkAutoTUnref<GrTexture> dataTex(context->textureProvider()->createTexture(desc, true, data, 0));
if (!dataTex.get()) {
return;
}
static const PMConversion kConversionRules[][2] = {
{kDivByAlpha_RoundDown_PMConversion, kMulByAlpha_RoundUp_PMConversion},
{kDivByAlpha_RoundUp_PMConversion, kMulByAlpha_RoundDown_PMConversion},
};
bool failed = true;
for (size_t i = 0; i < SK_ARRAY_COUNT(kConversionRules) && failed; ++i) {
*pmToUPMRule = kConversionRules[i][0];
*upmToPMRule = kConversionRules[i][1];
static const SkRect kDstRect = SkRect::MakeWH(SkIntToScalar(256), SkIntToScalar(256));
static const SkRect kSrcRect = SkRect::MakeWH(SK_Scalar1, SK_Scalar1);
// We do a PM->UPM draw from dataTex to readTex and read the data. Then we do a UPM->PM draw
// from readTex to tempTex followed by a PM->UPM draw to readTex and finally read the data.
// We then verify that two reads produced the same values.
GrPaint paint1;
GrPaint paint2;
GrPaint paint3;
SkAutoTUnref<GrFragmentProcessor> pmToUPM1(new GrConfigConversionEffect(
paint1.getProcessorDataManager(), dataTex, false, *pmToUPMRule, SkMatrix::I()));
SkAutoTUnref<GrFragmentProcessor> upmToPM(new GrConfigConversionEffect(
paint2.getProcessorDataManager(), readTex, false, *upmToPMRule, SkMatrix::I()));
SkAutoTUnref<GrFragmentProcessor> pmToUPM2(new GrConfigConversionEffect(
paint3.getProcessorDataManager(), tempTex, false, *pmToUPMRule, SkMatrix::I()));
paint1.addColorFragmentProcessor(pmToUPM1);
SkAutoTUnref<GrDrawContext> readDrawContext(context->drawContext());
if (!readDrawContext) {
failed = true;
break;
}
readDrawContext->drawNonAARectToRect(readTex->asRenderTarget(),
GrClip::WideOpen(),
paint1,
SkMatrix::I(),
kDstRect,
kSrcRect);
readTex->readPixels(0, 0, 256, 256, kRGBA_8888_GrPixelConfig, firstRead);
paint2.addColorFragmentProcessor(upmToPM);
SkAutoTUnref<GrDrawContext> tempDrawContext(context->drawContext());
if (!tempDrawContext) {
failed = true;
break;
}
tempDrawContext->drawNonAARectToRect(tempTex->asRenderTarget(),
GrClip::WideOpen(),
paint2,
SkMatrix::I(),
kDstRect,
kSrcRect);
paint3.addColorFragmentProcessor(pmToUPM2);
readDrawContext.reset(context->drawContext());
if (!readDrawContext) {
failed = true;
break;
}
readDrawContext->drawNonAARectToRect(readTex->asRenderTarget(),
GrClip::WideOpen(),
paint3,
SkMatrix::I(),
kDstRect,
kSrcRect);
readTex->readPixels(0, 0, 256, 256, kRGBA_8888_GrPixelConfig, secondRead);
failed = false;
for (int y = 0; y < 256 && !failed; ++y) {
for (int x = 0; x <= y; ++x) {
if (firstRead[256 * y + x] != secondRead[256 * y + x]) {
failed = true;
break;
}
}
}
}
if (failed) {
*pmToUPMRule = kNone_PMConversion;
*upmToPMRule = kNone_PMConversion;
}
}
