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Initial checkin of v1.04 - KTX file format support, basic ETC1 compression/decompression, Linux makefile with proper gcc options, lots of high-level improvements to get crnlib into a state where I can more easily add additional formats.

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This commit is contained in:
richgel99@gmail.com
2012-11-25 08:41:25 +00:00
parent a8011e9d7f
commit f71b49be60
92 changed files with 20362 additions and 781 deletions
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crnlib/crn_dxt.h
+81 -1
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@@ -43,7 +43,9 @@ namespace crnlib
cDXT5A,
cDXN_XY, // inverted relative to standard ATI2, 360's DXN
cDXN_YX // standard ATI2
cDXN_YX, // standard ATI2,
cETC1 // Ericsson texture compression (color only, 4x4 blocks, 4bpp, 64-bits/block)
};
const float cDXT1MaxLinearValue = 3.0f;
@@ -131,6 +133,32 @@ namespace crnlib
m_selectors[y] |= (val << (x * cDXT1SelectorBits));
}
inline void flip_x(uint w = 4, uint h = 4)
{
for (uint x = 0; x < (w / 2); x++)
{
for (uint y = 0; y < h; y++)
{
const uint c = get_selector(x, y);
set_selector(x, y, get_selector((w - 1) - x, y));
set_selector((w - 1) - x, y, c);
}
}
}
inline void flip_y(uint w = 4, uint h = 4)
{
for (uint y = 0; y < (h / 2); y++)
{
for (uint x = 0; x < w; x++)
{
const uint c = get_selector(x, y);
set_selector(x, y, get_selector(x, (h - 1) - y));
set_selector(x, (h - 1) - y, c);
}
}
}
static uint16 pack_color(const color_quad_u8& color, bool scaled, uint bias = 127U);
static uint16 pack_color(uint r, uint g, uint b, bool scaled, uint bias = 127U);
@@ -163,6 +191,32 @@ namespace crnlib
void set_alpha(uint x, uint y, uint value, bool scaled);
uint get_alpha(uint x, uint y, bool scaled) const;
inline void flip_x(uint w = 4, uint h = 4)
{
for (uint x = 0; x < (w / 2); x++)
{
for (uint y = 0; y < h; y++)
{
const uint c = get_alpha(x, y, false);
set_alpha(x, y, get_alpha((w - 1) - x, y, false), false);
set_alpha((w - 1) - x, y, c, false);
}
}
}
inline void flip_y(uint w = 4, uint h = 4)
{
for (uint y = 0; y < (h / 2); y++)
{
for (uint x = 0; x < w; x++)
{
const uint c = get_alpha(x, y, false);
set_alpha(x, y, get_alpha(x, (h - 1) - y, false), false);
set_alpha(x, (h - 1) - y, c, false);
}
}
}
};
CRNLIB_DEFINE_BITWISE_COPYABLE(dxt3_block);
@@ -245,6 +299,32 @@ namespace crnlib
m_selectors[byte_index + 1] = static_cast<uint8>(v >> 8);
}
inline void flip_x(uint w = 4, uint h = 4)
{
for (uint x = 0; x < (w / 2); x++)
{
for (uint y = 0; y < h; y++)
{
const uint c = get_selector(x, y);
set_selector(x, y, get_selector((w - 1) - x, y));
set_selector((w - 1) - x, y, c);
}
}
}
inline void flip_y(uint w = 4, uint h = 4)
{
for (uint y = 0; y < (h / 2); y++)
{
for (uint x = 0; x < w; x++)
{
const uint c = get_selector(x, y);
set_selector(x, y, get_selector(x, (h - 1) - y));
set_selector(x, (h - 1) - y, c);
}
}
}
enum { cMaxSelectorValues = 8 };
// Results written to alpha channel.