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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_image.h
+39 -9
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@@ -3,6 +3,10 @@
#pragma once
#include "crn_dxt1.h"
#include "crn_dxt5a.h"
#include "crn_etc.h"
#if CRNLIB_SUPPORT_ETC_A1
#include "crn_etc_a1.h"
#endif
#include "crn_image.h"
#define CRNLIB_SUPPORT_ATI_COMPRESS 0
@@ -34,7 +38,7 @@ namespace crnlib
dxt_format get_format() const { return m_format; }
bool has_color() const { return (m_format == cDXT1) || (m_format == cDXT1A) || (m_format == cDXT3) || (m_format == cDXT5); }
bool has_color() const { return (m_format == cDXT1) || (m_format == cDXT1A) || (m_format == cDXT3) || (m_format == cDXT5) || (m_format == cETC1); }
// Will be pretty slow if the image is DXT1, as this method scans for alpha blocks/selectors.
bool has_alpha() const;
@@ -43,10 +47,12 @@ namespace crnlib
{
cUnused = 0,
cColor,
cColorDXT1, // DXT1 color block
cAlpha3,
cAlpha5,
cAlphaDXT3, // DXT3 alpha block (only)
cAlphaDXT5, // DXT5 alpha block (only)
cColorETC1, // ETC1 color block
};
element_type get_element_type(uint element_index) const { CRNLIB_ASSERT(element_index < m_num_elements_per_block); return m_element_type[element_index]; }
@@ -86,6 +92,7 @@ namespace crnlib
{
m_quality = cCRNDXTQualityUber;
m_perceptual = true;
m_dithering = false;
m_grayscale_sampling = false;
m_use_both_block_types = true;
m_endpoint_caching = true;
@@ -125,6 +132,7 @@ namespace crnlib
crn_dxt_compressor_type m_compressor;
bool m_perceptual;
bool m_dithering;
bool m_grayscale_sampling;
bool m_use_both_block_types;
bool m_endpoint_caching;
@@ -148,7 +156,7 @@ namespace crnlib
void endian_swap();
uint get_num_elements() const { return m_elements.size(); }
uint get_total_elements() const { return m_elements.size(); }
const element_vec& get_element_vec() const { return m_elements; }
element_vec& get_element_vec() { return m_elements; }
@@ -168,9 +176,19 @@ namespace crnlib
void set_pixel(uint x, uint y, const color_quad_u8& c, bool perceptual = true);
// get_block_pixels() only sets those components stored in the image!
void get_block_pixels(uint block_x, uint block_y, color_quad_u8* pPixels) const;
bool get_block_pixels(uint block_x, uint block_y, color_quad_u8* pPixels) const;
struct set_block_pixels_context
{
dxt1_endpoint_optimizer m_dxt1_optimizer;
dxt5_endpoint_optimizer m_dxt5_optimizer;
pack_etc1_block_context m_etc1_optimizer;
#if CRNLIB_SUPPORT_ETC_A1
etc_a1::pack_etc1_block_context m_etc1_a1_optimizer;
#endif
};
void set_block_pixels(uint block_x, uint block_y, const color_quad_u8* pPixels, const pack_params& p, dxt1_endpoint_optimizer& dxt1_optimizer, dxt5_endpoint_optimizer& dxt5_optimizer);
void set_block_pixels(uint block_x, uint block_y, const color_quad_u8* pPixels, const pack_params& p, set_block_pixels_context& context);
void set_block_pixels(uint block_x, uint block_y, const color_quad_u8* pPixels, const pack_params& p);
void get_block_endpoints(uint block_x, uint block_y, uint element_index, uint& packed_low_endpoint, uint& packed_high_endpoint) const;
@@ -181,11 +199,20 @@ namespace crnlib
// pColors should point to a 16 entry array, to handle DXT3.
// Returns the number of block colors: 3, 4, 6, 8, or 16.
uint get_block_colors(uint block_x, uint block_y, uint element_index, color_quad_u8* pColors);
uint get_block_colors(uint block_x, uint block_y, uint element_index, color_quad_u8* pColors, uint subblock_index = 0);
uint get_subblock_index(uint x, uint y, uint element_index) const;
uint get_total_subblocks(uint element_index) const;
uint get_selector(uint x, uint y, uint element_index) const;
void change_dxt1_to_dxt1a();
bool can_flip(uint axis_index);
// Returns true if the texture can actually be flipped.
bool flip_x();
bool flip_y();
private:
element_vec m_elements;
@@ -205,7 +232,7 @@ namespace crnlib
int8 m_element_component_index[2];
element_type m_element_type[2];
dxt_format m_format; // DXT1, 1A, 3, 5, N/3DC, or A
dxt_format m_format; // DXT1, 1A, 3, 5, N/3DC, or 5A
bool init_internal(dxt_format fmt, uint width, uint height);
void init_task(uint64 data, void* pData_ptr);
@@ -213,6 +240,9 @@ namespace crnlib
#if CRNLIB_SUPPORT_ATI_COMPRESS
bool init_ati_compress(dxt_format fmt, const image_u8& img, const pack_params& p);
#endif
void flip_col(uint x);
void flip_row(uint y);
};
} // namespace crnlib