TorqueGameEngines/Torque3D
1
0
Fork 0
mirror of https://github.com/TorqueGameEngines/Torque3D.git synced 2026-02-13 03:33:48 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

Implementation of sRGB image support. Overhauls the linearization setup to utilize the sRGB image types, as well as refactors the use of ColorF and ColorI to be properly internally consistent. ColorIs are used only for front-facing/editing/UI settings, and ColorFs, now renamed to LinearColorF to reduce confusion of purpose, are used for color info in the engine itself. This avoids confusing and expensive conversions back and forth between types and avoids botches with linearity. Majority work done by @rextimmy

Browse source
This commit is contained in:
Areloch 2017-06-23 11:36:20 -05:00
parent 8943c673fb
commit 0801a3cca8
294 changed files with 3894 additions and 2813 deletions
Download patch file Download diff file Expand all files Collapse all files

156
Engine/source/gfx/bitmap/gBitmap.cpp
View file

@ -347,6 +347,77 @@ void GBitmap::allocateBitmap(const U32 in_width, const U32 in_height, const bool
}
}
//--------------------------------------------------------------------------
void GBitmap::allocateBitmapWithMips(const U32 in_width, const U32 in_height, const U32 in_numMips, const GFXFormat in_format)
{
//-------------------------------------- Some debug checks...
U32 svByteSize = mByteSize;
U8 *svBits = mBits;
AssertFatal(in_width != 0 && in_height != 0, "GBitmap::allocateBitmap: width or height is 0");
mInternalFormat = in_format;
mWidth = in_width;
mHeight = in_height;
mBytesPerPixel = 1;
switch (mInternalFormat)
{
case GFXFormatA8:
case GFXFormatL8: mBytesPerPixel = 1;
break;
case GFXFormatR8G8B8: mBytesPerPixel = 3;
break;
case GFXFormatR8G8B8X8:
case GFXFormatR8G8B8A8: mBytesPerPixel = 4;
break;
case GFXFormatR5G6B5:
case GFXFormatR5G5B5A1: mBytesPerPixel = 2;
break;
default:
AssertFatal(false, "GBitmap::GBitmap: misunderstood format specifier");
break;
}
// Set up the mip levels, if necessary...
mNumMipLevels = 1;
U32 allocPixels = in_width * in_height * mBytesPerPixel;
mMipLevelOffsets[0] = 0;
if (in_numMips != 0)
{
U32 currWidth = in_width;
U32 currHeight = in_height;
do
{
mMipLevelOffsets[mNumMipLevels] = mMipLevelOffsets[mNumMipLevels - 1] +
(currWidth * currHeight * mBytesPerPixel);
currWidth >>= 1;
currHeight >>= 1;
if (currWidth == 0) currWidth = 1;
if (currHeight == 0) currHeight = 1;
mNumMipLevels++;
allocPixels += currWidth * currHeight * mBytesPerPixel;
} while (currWidth != 1 || currHeight != 1 && mNumMipLevels != in_numMips);
}
AssertFatal(mNumMipLevels <= c_maxMipLevels, "GBitmap::allocateBitmap: too many miplevels");
// Set up the memory...
mByteSize = allocPixels;
mBits = new U8[mByteSize];
dMemset(mBits, 0xFF, mByteSize);
if (svBits != NULL)
{
dMemcpy(mBits, svBits, getMin(mByteSize, svByteSize));
delete[] svBits;
}
}
//--------------------------------------------------------------------------
void GBitmap::extrudeMipLevels(bool clearBorders)
{
@ -410,6 +481,38 @@ void GBitmap::extrudeMipLevels(bool clearBorders)
}
}
//--------------------------------------------------------------------------
void GBitmap::chopTopMips(U32 mipsToChop)
{
U32 scalePower = getMin(mipsToChop, getNumMipLevels() - 1);
U32 newMipCount = getNumMipLevels() - scalePower;
U32 realWidth = getMax((U32)1, getWidth() >> scalePower);
U32 realHeight = getMax((U32)1, getHeight() >> scalePower);
U8 *destBits = mBits;
U32 destOffsets[c_maxMipLevels];
for (U32 i = scalePower; i<mNumMipLevels; i++)
{
// Copy to the new bitmap...
dMemcpy(destBits,
getWritableBits(i),
getSurfaceSize(i));
destOffsets[i - scalePower] = destBits - mBits;
destBits += getSurfaceSize(i);
}
dMemcpy(mMipLevelOffsets, destOffsets, sizeof(destOffsets));
mWidth = realWidth;
mHeight = realHeight;
mByteSize = destBits - mBits;
mNumMipLevels = newMipCount;
}
//--------------------------------------------------------------------------
void GBitmap::extrudeMipLevelsDetail()
{
@ -609,9 +712,9 @@ bool GBitmap::checkForTransparency()
}
//------------------------------------------------------------------------------
ColorF GBitmap::sampleTexel(F32 u, F32 v) const
LinearColorF GBitmap::sampleTexel(F32 u, F32 v) const
{
ColorF col(0.5f, 0.5f, 0.5f);
LinearColorF col(0.5f, 0.5f, 0.5f);
// normally sampling wraps all the way around at 1.0,
// but locking doesn't support this, and we seem to calc
// the uv based on a clamped 0 - 1...
@ -733,6 +836,20 @@ bool GBitmap::setColor(const U32 x, const U32 y, const ColorI& rColor)
return true;
}
//--------------------------------------------------------------------------
U8 GBitmap::getChanelValueAt(U32 x, U32 y, U32 chan)
{
ColorI pixelColor = ColorI(255,255,255,255);
getColor(x, y, pixelColor);
switch (chan) {
case 0: return pixelColor.red;
case 1: return pixelColor.green;
case 2: return pixelColor.blue;
default: return pixelColor.alpha;
}
}
//-----------------------------------------------------------------------------
bool GBitmap::combine( const GBitmap *bitmapA, const GBitmap *bitmapB, const GFXTextureOp combineOp )
@ -1175,6 +1292,41 @@ Resource<GBitmap> GBitmap::_search(const Torque::Path &path)
return Resource< GBitmap >( NULL );
}
U32 GBitmap::getSurfaceSize(const U32 mipLevel) const
{
// Bump by the mip level.
U32 height = getMax(U32(1), mHeight >> mipLevel);
U32 width = getMax(U32(1), mWidth >> mipLevel);
if (mInternalFormat >= GFXFormatBC1 && mInternalFormat <= GFXFormatBC3)
{
// From the directX docs:
// max(1, width ÷ 4) x max(1, height ÷ 4) x 8(DXT1) or 16(DXT2-5)
U32 sizeMultiple = 0;
switch (mInternalFormat)
{
case GFXFormatBC1:
sizeMultiple = 8;
break;
case GFXFormatBC2:
case GFXFormatBC3:
sizeMultiple = 16;
break;
default:
AssertISV(false, "DDSFile::getSurfaceSize - invalid compressed texture format, we only support DXT1-5 right now.");
break;
}
return getMax(U32(1), width / 4) * getMax(U32(1), height / 4) * sizeMultiple;
}
else
{
return height * width* mBytesPerPixel;
}
}
DefineEngineFunction( getBitmapInfo, String, ( const char *filename ),,
"Returns image info in the following format: width TAB height TAB bytesPerPixel. "
"It will return an empty string if the file is not found.\n"