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Removed the pvr module.

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Relintai 2023-12-16 18:06:15 +01:00
parent a7f6040e05
commit a359b24229
28 changed files with 2 additions and 2488 deletions
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38
modules/pvr/SCsub
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@ -1,38 +0,0 @@
#!/usr/bin/env python
Import("env")
Import("env_modules")
env_pvr = env_modules.Clone()
# Thirdparty source files
thirdparty_obj = []
# Not unbundled so far since not widespread as shared library
thirdparty_dir = "#thirdparty/pvrtccompressor/"
thirdparty_sources = [
"BitScale.cpp",
"MortonTable.cpp",
"PvrTcDecoder.cpp",
"PvrTcEncoder.cpp",
"PvrTcPacket.cpp",
]
thirdparty_sources = [thirdparty_dir + file for file in thirdparty_sources]
env_pvr.Prepend(CPPPATH=[thirdparty_dir])
env_thirdparty = env_pvr.Clone()
env_thirdparty.disable_warnings()
env_thirdparty.add_source_files(thirdparty_obj, thirdparty_sources)
env.modules_sources += thirdparty_obj
# Pandemonium source files
module_obj = []
env_pvr.add_source_files(module_obj, "*.cpp")
env.modules_sources += module_obj
# Needed to force rebuilding the module files when the thirdparty library is updated.
env.Depends(module_obj, thirdparty_obj)

6
modules/pvr/config.py
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def can_build(env, platform):
return True
def configure(env):
pass

90
modules/pvr/image_compress_pvrtc.cpp
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/*************************************************************************/
/* image_compress_pvrtc.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#include "image_compress_pvrtc.h"
#include "core/io/image.h"
#include "core/object/reference.h"
#include <PvrTcEncoder.h>
#include <RgbaBitmap.h>
static void _compress_pvrtc4(Image *p_img) {
Ref<Image> img = p_img->duplicate();
bool make_mipmaps = false;
if (!img->is_size_po2() || img->get_width() != img->get_height()) {
make_mipmaps = img->has_mipmaps();
img->resize_to_po2(true);
// Resizing can fail for some formats
if (!img->is_size_po2() || img->get_width() != img->get_height()) {
ERR_FAIL_MSG("Failed to resize the image for compression.");
}
}
img->convert(Image::FORMAT_RGBA8);
if (!img->has_mipmaps() && make_mipmaps) {
img->generate_mipmaps();
}
bool use_alpha = img->detect_alpha();
Ref<Image> new_img;
new_img.instance();
new_img->create(img->get_width(), img->get_height(), img->has_mipmaps(), use_alpha ? Image::FORMAT_PVRTC4A : Image::FORMAT_PVRTC4);
PoolVector<uint8_t> data = new_img->get_data();
{
PoolVector<uint8_t>::Write wr = data.write();
PoolVector<uint8_t>::Read r = img->get_data().read();
for (int i = 0; i <= new_img->get_mipmap_count(); i++) {
int ofs, size, w, h;
img->get_mipmap_offset_size_and_dimensions(i, ofs, size, w, h);
Javelin::RgbaBitmap bm(w, h);
void *dst = (void *)bm.GetData();
memcpy(dst, &r[ofs], size);
Javelin::ColorRgba<unsigned char> *dp = bm.GetData();
for (int j = 0; j < size / 4; j++) {
// Red and blue colors are swapped.
SWAP(dp[j].r, dp[j].b);
}
new_img->get_mipmap_offset_size_and_dimensions(i, ofs, size, w, h);
Javelin::PvrTcEncoder::EncodeRgba4Bpp(&wr[ofs], bm);
}
}
p_img->create(new_img->get_width(), new_img->get_height(), new_img->has_mipmaps(), new_img->get_format(), data);
}
void _register_pvrtc_compress_func() {
// FIXME: We claim to support PVRTC2 but use the same method as for PVRTC4.
Image::_image_compress_pvrtc2_func = _compress_pvrtc4;
Image::_image_compress_pvrtc4_func = _compress_pvrtc4;
}

35
modules/pvr/image_compress_pvrtc.h
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#ifndef IMAGE_COMPRESS_PVRTC_H
#define IMAGE_COMPRESS_PVRTC_H
/*************************************************************************/
/* image_compress_pvrtc.h */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
void _register_pvrtc_compress_func();
#endif // IMAGE_COMPRESS_PVRTC_H

52
modules/pvr/register_types.cpp
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/*************************************************************************/
/* register_types.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#include "register_types.h"
#include "image_compress_pvrtc.h"
#include "texture_loader_pvr.h"
static Ref<ResourceFormatPVR> resource_loader_pvr;
void register_pvr_types(ModuleRegistrationLevel p_level) {
if (p_level == MODULE_REGISTRATION_LEVEL_CORE) {
resource_loader_pvr.instance();
ResourceLoader::add_resource_format_loader(resource_loader_pvr);
_register_pvrtc_compress_func();
}
}
void unregister_pvr_types(ModuleRegistrationLevel p_level) {
if (p_level == MODULE_REGISTRATION_LEVEL_CORE) {
ResourceLoader::remove_resource_format_loader(resource_loader_pvr);
resource_loader_pvr.unref();
}
}

38
modules/pvr/register_types.h
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#ifndef PVR_REGISTER_TYPES_H
#define PVR_REGISTER_TYPES_H
/*************************************************************************/
/* register_types.h */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#include "modules/register_module_types.h"
void register_pvr_types(ModuleRegistrationLevel p_level);
void unregister_pvr_types(ModuleRegistrationLevel p_level);
#endif // PVR_REGISTER_TYPES_H

619
modules/pvr/texture_loader_pvr.cpp
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@ -1,619 +0,0 @@
/*************************************************************************/
/* texture_loader_pvr.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#include "texture_loader_pvr.h"
#include "core/os/file_access.h"
static void _pvrtc_decompress(Image *p_img);
enum PVRFLags {
PVR_HAS_MIPMAPS = 0x00000100,
PVR_TWIDDLED = 0x00000200,
PVR_NORMAL_MAP = 0x00000400,
PVR_BORDER = 0x00000800,
PVR_CUBE_MAP = 0x00001000,
PVR_FALSE_MIPMAPS = 0x00002000,
PVR_VOLUME_TEXTURES = 0x00004000,
PVR_HAS_ALPHA = 0x00008000,
PVR_VFLIP = 0x00010000
};
RES ResourceFormatPVR::load(const String &p_path, const String &p_original_path, Error *r_error, bool p_no_subresource_cache) {
if (r_error) {
*r_error = ERR_CANT_OPEN;
}
Error err;
FileAccess *f = FileAccess::open(p_path, FileAccess::READ, &err);
if (!f) {
return RES();
}
FileAccessRef faref(f);
ERR_FAIL_COND_V(err, RES());
if (r_error) {
*r_error = ERR_FILE_CORRUPT;
}
uint32_t hsize = f->get_32();
ERR_FAIL_COND_V(hsize != 52, RES());
uint32_t height = f->get_32();
uint32_t width = f->get_32();
uint32_t mipmaps = f->get_32();
uint32_t flags = f->get_32();
uint32_t surfsize = f->get_32();
f->seek(f->get_position() + 20); // bpp, rmask, gmask, bmask, amask
uint8_t pvrid[5] = { 0, 0, 0, 0, 0 };
f->get_buffer(pvrid, 4);
ERR_FAIL_COND_V(String((char *)pvrid) != "PVR!", RES());
f->get_32(); // surfcount
/*
print_line("height: "+itos(height));
print_line("width: "+itos(width));
print_line("mipmaps: "+itos(mipmaps));
print_line("flags: "+itos(flags));
print_line("surfsize: "+itos(surfsize));
print_line("bpp: "+itos(bpp));
print_line("rmask: "+itos(rmask));
print_line("gmask: "+itos(gmask));
print_line("bmask: "+itos(bmask));
print_line("amask: "+itos(amask));
print_line("surfcount: "+itos(surfcount));
*/
PoolVector<uint8_t> data;
data.resize(surfsize);
ERR_FAIL_COND_V(data.size() == 0, RES());
PoolVector<uint8_t>::Write w = data.write();
f->get_buffer(&w[0], surfsize);
err = f->get_error();
ERR_FAIL_COND_V(err != OK, RES());
Image::Format format = Image::FORMAT_MAX;
switch (flags & 0xFF) {
case 0x18:
case 0xC:
format = (flags & PVR_HAS_ALPHA) ? Image::FORMAT_PVRTC2A : Image::FORMAT_PVRTC2;
break;
case 0x19:
case 0xD:
format = (flags & PVR_HAS_ALPHA) ? Image::FORMAT_PVRTC4A : Image::FORMAT_PVRTC4;
break;
case 0x16:
format = Image::FORMAT_L8;
break;
case 0x17:
format = Image::FORMAT_LA8;
break;
case 0x20:
case 0x80:
case 0x81:
format = Image::FORMAT_DXT1;
break;
case 0x21:
case 0x22:
case 0x82:
case 0x83:
format = Image::FORMAT_DXT3;
break;
case 0x23:
case 0x24:
case 0x84:
case 0x85:
format = Image::FORMAT_DXT5;
break;
case 0x4:
case 0x15:
format = Image::FORMAT_RGB8;
break;
case 0x5:
case 0x12:
format = Image::FORMAT_RGBA8;
break;
case 0x36:
format = Image::FORMAT_ETC;
break;
default:
ERR_FAIL_V_MSG(RES(), "Unsupported format in PVR texture: " + itos(flags & 0xFF) + ".");
}
w.release();
int tex_flags = Texture::FLAG_FILTER | Texture::FLAG_REPEAT;
if (mipmaps) {
tex_flags |= Texture::FLAG_MIPMAPS;
}
Ref<Image> image = memnew(Image(width, height, mipmaps, format, data));
ERR_FAIL_COND_V(image->empty(), RES());
Ref<ImageTexture> texture = memnew(ImageTexture);
texture->create_from_image(image, tex_flags);
if (r_error) {
*r_error = OK;
}
return texture;
}
void ResourceFormatPVR::get_recognized_extensions(List<String> *p_extensions) const {
p_extensions->push_back("pvr");
}
bool ResourceFormatPVR::handles_type(const String &p_type) const {
return ClassDB::is_parent_class(p_type, "Texture");
}
String ResourceFormatPVR::get_resource_type(const String &p_path) const {
if (p_path.get_extension().to_lower() == "pvr") {
return "Texture";
}
return "";
}
ResourceFormatPVR::ResourceFormatPVR() {
Image::_image_decompress_pvrtc = _pvrtc_decompress;
}
/////////////////////////////////////////////////////////
//PVRTC decompressor, Based on PVRTC decompressor by IMGTEC.
/////////////////////////////////////////////////////////
#define PT_INDEX 2
#define BLK_Y_SIZE 4
#define BLK_X_MAX 8
#define BLK_X_2BPP 8
#define BLK_X_4BPP 4
#define WRAP_COORD(Val, Size) ((Val) & ((Size)-1))
/*
Define an expression to either wrap or clamp large or small vals to the
legal coordinate range
*/
#define LIMIT_COORD(Val, Size, p_tiled) \
((p_tiled) ? WRAP_COORD((Val), (Size)) : CLAMP((Val), 0, (Size)-1))
struct PVRTCBlock {
//blocks are 64 bits
uint32_t data[2];
};
_FORCE_INLINE_ bool is_po2(uint32_t p_input) {
if (p_input == 0) {
return false;
}
uint32_t minus1 = p_input - 1;
return ((p_input | minus1) == (p_input ^ minus1)) ? true : false;
}
static void unpack_5554(const PVRTCBlock *p_block, int p_ab_colors[2][4]) {
uint32_t raw_bits[2];
raw_bits[0] = p_block->data[1] & (0xFFFE);
raw_bits[1] = p_block->data[1] >> 16;
for (int i = 0; i < 2; i++) {
if (raw_bits[i] & (1 << 15)) {
p_ab_colors[i][0] = (raw_bits[i] >> 10) & 0x1F;
p_ab_colors[i][1] = (raw_bits[i] >> 5) & 0x1F;
p_ab_colors[i][2] = raw_bits[i] & 0x1F;
if (i == 0) {
p_ab_colors[0][2] |= p_ab_colors[0][2] >> 4;
}
p_ab_colors[i][3] = 0xF;
} else {
p_ab_colors[i][0] = (raw_bits[i] >> (8 - 1)) & 0x1E;
p_ab_colors[i][1] = (raw_bits[i] >> (4 - 1)) & 0x1E;
p_ab_colors[i][0] |= p_ab_colors[i][0] >> 4;
p_ab_colors[i][1] |= p_ab_colors[i][1] >> 4;
p_ab_colors[i][2] = (raw_bits[i] & 0xF) << 1;
if (i == 0) {
p_ab_colors[0][2] |= p_ab_colors[0][2] >> 3;
} else {
p_ab_colors[0][2] |= p_ab_colors[0][2] >> 4;
}
p_ab_colors[i][3] = (raw_bits[i] >> 11) & 0xE;
}
}
}
static void unpack_modulations(const PVRTCBlock *p_block, const int p_2bit, int p_modulation[8][16], int p_modulation_modes[8][16], int p_x, int p_y) {
int block_mod_mode = p_block->data[1] & 1;
uint32_t modulation_bits = p_block->data[0];
if (p_2bit && block_mod_mode) {
for (int y = 0; y < BLK_Y_SIZE; y++) {
for (int x = 0; x < BLK_X_2BPP; x++) {
p_modulation_modes[y + p_y][x + p_x] = block_mod_mode;
if (((x ^ y) & 1) == 0) {
p_modulation[y + p_y][x + p_x] = modulation_bits & 3;
modulation_bits >>= 2;
}
}
}
} else if (p_2bit) {
for (int y = 0; y < BLK_Y_SIZE; y++) {
for (int x = 0; x < BLK_X_2BPP; x++) {
p_modulation_modes[y + p_y][x + p_x] = block_mod_mode;
if (modulation_bits & 1) {
p_modulation[y + p_y][x + p_x] = 0x3;
} else {
p_modulation[y + p_y][x + p_x] = 0x0;
}
modulation_bits >>= 1;
}
}
} else {
for (int y = 0; y < BLK_Y_SIZE; y++) {
for (int x = 0; x < BLK_X_4BPP; x++) {
p_modulation_modes[y + p_y][x + p_x] = block_mod_mode;
p_modulation[y + p_y][x + p_x] = modulation_bits & 3;
modulation_bits >>= 2;
}
}
}
ERR_FAIL_COND(modulation_bits != 0);
}
static void interpolate_colors(const int p_colorp[4], const int p_colorq[4], const int p_colorr[4], const int p_colors[4], bool p_2bit, const int x, const int y, int r_result[4]) {
int u, v, uscale;
int k;
int tmp1, tmp2;
int P[4], Q[4], R[4], S[4];
for (k = 0; k < 4; k++) {
P[k] = p_colorp[k];
Q[k] = p_colorq[k];
R[k] = p_colorr[k];
S[k] = p_colors[k];
}
v = (y & 0x3) | ((~y & 0x2) << 1);
if (p_2bit) {
u = (x & 0x7) | ((~x & 0x4) << 1);
} else {
u = (x & 0x3) | ((~x & 0x2) << 1);
}
v = v - BLK_Y_SIZE / 2;
if (p_2bit) {
u = u - BLK_X_2BPP / 2;
uscale = 8;
} else {
u = u - BLK_X_4BPP / 2;
uscale = 4;
}
for (k = 0; k < 4; k++) {
tmp1 = P[k] * uscale + u * (Q[k] - P[k]);
tmp2 = R[k] * uscale + u * (S[k] - R[k]);
tmp1 = tmp1 * 4 + v * (tmp2 - tmp1);
r_result[k] = tmp1;
}
if (p_2bit) {
for (k = 0; k < 3; k++) {
r_result[k] >>= 2;
}
r_result[3] >>= 1;
} else {
for (k = 0; k < 3; k++) {
r_result[k] >>= 1;
}
}
for (k = 0; k < 4; k++) {
ERR_FAIL_COND(r_result[k] >= 256);
}
for (k = 0; k < 3; k++) {
r_result[k] += r_result[k] >> 5;
}
r_result[3] += r_result[3] >> 4;
for (k = 0; k < 4; k++) {
ERR_FAIL_COND(r_result[k] >= 256);
}
}
static void get_modulation_value(int x, int y, const int p_2bit, const int p_modulation[8][16], const int p_modulation_modes[8][16], int *r_mod, int *p_dopt) {
static const int rep_vals0[4] = { 0, 3, 5, 8 };
static const int rep_vals1[4] = { 0, 4, 4, 8 };
int mod_val;
y = (y & 0x3) | ((~y & 0x2) << 1);
if (p_2bit) {
x = (x & 0x7) | ((~x & 0x4) << 1);
} else {
x = (x & 0x3) | ((~x & 0x2) << 1);
}
*p_dopt = 0;
if (p_modulation_modes[y][x] == 0) {
mod_val = rep_vals0[p_modulation[y][x]];
} else if (p_2bit) {
if (((x ^ y) & 1) == 0) {
mod_val = rep_vals0[p_modulation[y][x]];
} else if (p_modulation_modes[y][x] == 1) {
mod_val = (rep_vals0[p_modulation[y - 1][x]] +
rep_vals0[p_modulation[y + 1][x]] +
rep_vals0[p_modulation[y][x - 1]] +
rep_vals0[p_modulation[y][x + 1]] + 2) /
4;
} else if (p_modulation_modes[y][x] == 2) {
mod_val = (rep_vals0[p_modulation[y][x - 1]] +
rep_vals0[p_modulation[y][x + 1]] + 1) /
2;
} else {
mod_val = (rep_vals0[p_modulation[y - 1][x]] +
rep_vals0[p_modulation[y + 1][x]] + 1) /
2;
}
} else {
mod_val = rep_vals1[p_modulation[y][x]];
*p_dopt = p_modulation[y][x] == PT_INDEX;
}
*r_mod = mod_val;
}
static int disable_twiddling = 0;
static uint32_t twiddle_uv(uint32_t p_height, uint32_t p_width, uint32_t p_y, uint32_t p_x) {
uint32_t twiddled;
uint32_t min_dimension;
uint32_t max_value;
uint32_t scr_bit_pos;
uint32_t dst_bit_pos;
int shift_count;
ERR_FAIL_COND_V(p_y >= p_height, 0);
ERR_FAIL_COND_V(p_x >= p_width, 0);
ERR_FAIL_COND_V(!is_po2(p_height), 0);
ERR_FAIL_COND_V(!is_po2(p_width), 0);
if (p_height < p_width) {
min_dimension = p_height;
max_value = p_x;
} else {
min_dimension = p_width;
max_value = p_y;
}
if (disable_twiddling) {
return (p_y * p_width + p_x);
}
scr_bit_pos = 1;
dst_bit_pos = 1;
twiddled = 0;
shift_count = 0;
while (scr_bit_pos < min_dimension) {
if (p_y & scr_bit_pos) {
twiddled |= dst_bit_pos;
}
if (p_x & scr_bit_pos) {
twiddled |= (dst_bit_pos << 1);
}
scr_bit_pos <<= 1;
dst_bit_pos <<= 2;
shift_count += 1;
}
max_value >>= shift_count;
twiddled |= (max_value << (2 * shift_count));
return twiddled;
}
static void decompress_pvrtc(PVRTCBlock *p_comp_img, const int p_2bit, const int p_width, const int p_height, const int p_tiled, unsigned char *p_dst) {
int x, y;
int i, j;
int block_x, blk_y;
int block_xp1, blk_yp1;
int x_block_size;
int block_width, block_height;
int p_x, p_y;
int p_modulation[8][16] = { { 0 } };
int p_modulation_modes[8][16] = { { 0 } };
int Mod, DoPT;
unsigned int u_pos;
// local neighbourhood of blocks
PVRTCBlock *p_blocks[2][2];
PVRTCBlock *prev[2][2] = { { nullptr, nullptr }, { nullptr, nullptr } };
struct
{
int Reps[2][4];
} colors5554[2][2];
int ASig[4], BSig[4];
int r_result[4];
if (p_2bit) {
x_block_size = BLK_X_2BPP;
} else {
x_block_size = BLK_X_4BPP;
}
block_width = MAX(2, p_width / x_block_size);
block_height = MAX(2, p_height / BLK_Y_SIZE);
for (y = 0; y < p_height; y++) {
for (x = 0; x < p_width; x++) {
block_x = (x - x_block_size / 2);
blk_y = (y - BLK_Y_SIZE / 2);
block_x = LIMIT_COORD(block_x, p_width, p_tiled);
blk_y = LIMIT_COORD(blk_y, p_height, p_tiled);
block_x /= x_block_size;
blk_y /= BLK_Y_SIZE;
block_xp1 = LIMIT_COORD(block_x + 1, block_width, p_tiled);
blk_yp1 = LIMIT_COORD(blk_y + 1, block_height, p_tiled);
p_blocks[0][0] = p_comp_img + twiddle_uv(block_height, block_width, blk_y, block_x);
p_blocks[0][1] = p_comp_img + twiddle_uv(block_height, block_width, blk_y, block_xp1);
p_blocks[1][0] = p_comp_img + twiddle_uv(block_height, block_width, blk_yp1, block_x);
p_blocks[1][1] = p_comp_img + twiddle_uv(block_height, block_width, blk_yp1, block_xp1);
if (memcmp(prev, p_blocks, 4 * sizeof(void *)) != 0) {
p_y = 0;
for (i = 0; i < 2; i++) {
p_x = 0;
for (j = 0; j < 2; j++) {
unpack_5554(p_blocks[i][j], colors5554[i][j].Reps);
unpack_modulations(
p_blocks[i][j],
p_2bit,
p_modulation,
p_modulation_modes,
p_x, p_y);
p_x += x_block_size;
}
p_y += BLK_Y_SIZE;
}
memcpy(prev, p_blocks, 4 * sizeof(void *));
}
interpolate_colors(
colors5554[0][0].Reps[0],
colors5554[0][1].Reps[0],
colors5554[1][0].Reps[0],
colors5554[1][1].Reps[0],
p_2bit, x, y,
ASig);
interpolate_colors(
colors5554[0][0].Reps[1],
colors5554[0][1].Reps[1],
colors5554[1][0].Reps[1],
colors5554[1][1].Reps[1],
p_2bit, x, y,
BSig);
get_modulation_value(x, y, p_2bit, (const int(*)[16])p_modulation, (const int(*)[16])p_modulation_modes,
&Mod, &DoPT);
for (i = 0; i < 4; i++) {
r_result[i] = ASig[i] * 8 + Mod * (BSig[i] - ASig[i]);
r_result[i] >>= 3;
}
if (DoPT) {
r_result[3] = 0;
}
u_pos = (x + y * p_width) << 2;
p_dst[u_pos + 0] = (uint8_t)r_result[0];
p_dst[u_pos + 1] = (uint8_t)r_result[1];
p_dst[u_pos + 2] = (uint8_t)r_result[2];
p_dst[u_pos + 3] = (uint8_t)r_result[3];
}
}
}
static void _pvrtc_decompress(Image *p_img) {
ERR_FAIL_COND(p_img->get_format() != Image::FORMAT_PVRTC2 && p_img->get_format() != Image::FORMAT_PVRTC2A && p_img->get_format() != Image::FORMAT_PVRTC4 && p_img->get_format() != Image::FORMAT_PVRTC4A);
bool _2bit = (p_img->get_format() == Image::FORMAT_PVRTC2 || p_img->get_format() == Image::FORMAT_PVRTC2A);
PoolVector<uint8_t> data = p_img->get_data();
PoolVector<uint8_t>::Read r = data.read();
PoolVector<uint8_t> newdata;
newdata.resize(p_img->get_width() * p_img->get_height() * 4);
PoolVector<uint8_t>::Write w = newdata.write();
decompress_pvrtc((PVRTCBlock *)r.ptr(), _2bit, p_img->get_width(), p_img->get_height(), 0, (unsigned char *)w.ptr());
w.release();
r.release();
bool make_mipmaps = p_img->has_mipmaps();
p_img->create(p_img->get_width(), p_img->get_height(), false, Image::FORMAT_RGBA8, newdata);
if (make_mipmaps) {
p_img->generate_mipmaps();
}
}

47
modules/pvr/texture_loader_pvr.h
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@ -1,47 +0,0 @@
#ifndef TEXTURE_LOADER_PVR_H
#define TEXTURE_LOADER_PVR_H
/*************************************************************************/
/* texture_loader_pvr.h */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#include "core/io/resource_loader.h"
#include "scene/resources/texture.h"
class ResourceFormatPVR : public ResourceFormatLoader {
public:
virtual RES load(const String &p_path, const String &p_original_path = "", Error *r_error = NULL, bool p_no_subresource_cache = false);
virtual void get_recognized_extensions(List<String> *p_extensions) const;
virtual bool handles_type(const String &p_type) const;
virtual String get_resource_type(const String &p_path) const;
ResourceFormatPVR();
virtual ~ResourceFormatPVR() {}
};
#endif // TEXTURE_LOADER_PVR_H

3
scu_builders.py
View File

@ -292,7 +292,8 @@ def generate_scu_files(verbose, is_release_build, env):
"os", "string", "variant", "io", "crypto"])
else:
process_folder(["core", "bind", "config", "containers", "error", "input", "log", "math", "object",
"os", "string", "variant", "io", "crypto", "crypto/mbedtls/library", "thirdparty/misc", "thirdparty/zstd", "thirdparty/zlib"], [], 0, "cpp c")
"os", "string", "variant", "io", "crypto", "crypto/mbedtls/library", "thirdparty/misc",
"thirdparty/zstd", "thirdparty/zlib"], [], 0, "cpp c")
#process_folder(["drivers/gles2"], [], 0, "cpp c")
#process_folder(["drivers/unix"], [], 0, "cpp c")

18
thirdparty/pvrtccompressor/AlphaBitmap.h vendored
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@ -1,18 +0,0 @@
#pragma once
#include "Bitmap.h"
namespace Javelin {
class AlphaBitmap : public Bitmap {
public:
AlphaBitmap(int w, int h)
: Bitmap(w, h, 1) {
}
const unsigned char *GetData() const { return data; }
unsigned char *GetData() { return data; }
};
}

184
thirdparty/pvrtccompressor/BitScale.cpp vendored
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@ -1,184 +0,0 @@
#include "BitScale.h"
const uint8_t Javelin::Data::BITSCALE_5_TO_8[32] = {
0, 8, 16, 24, 32, 41, 49, 57, 65, 74,
82, 90, 98, 106, 115, 123, 131, 139, 148, 156,
164, 172, 180, 189, 197, 205, 213, 222, 230, 238,
246, 255};
const uint8_t Javelin::Data::BITSCALE_4_TO_8[16] = {
0, 17, 34, 51, 68, 85, 102, 119, 136, 153,
170, 187, 204, 221, 238, 255};
const uint8_t Javelin::Data::BITSCALE_3_TO_8[8] = {
0, 36, 72, 109, 145, 182, 218, 255};
const uint8_t Javelin::Data::BITSCALE_8_TO_5_FLOOR[256] = {
0, 0, 0, 0, 0, 0, 0, 0, 0, 1,
1, 1, 1, 1, 1, 1, 1, 2, 2, 2,
2, 2, 2, 2, 2, 3, 3, 3, 3, 3,
3, 3, 3, 4, 4, 4, 4, 4, 4, 4,
4, 4, 5, 5, 5, 5, 5, 5, 5, 5,
6, 6, 6, 6, 6, 6, 6, 6, 7, 7,
7, 7, 7, 7, 7, 7, 8, 8, 8, 8,
8, 8, 8, 8, 8, 9, 9, 9, 9, 9,
9, 9, 9, 10, 10, 10, 10, 10, 10, 10,
10, 11, 11, 11, 11, 11, 11, 11, 11, 12,
12, 12, 12, 12, 12, 12, 12, 13, 13, 13,
13, 13, 13, 13, 13, 13, 14, 14, 14, 14,
14, 14, 14, 14, 15, 15, 15, 15, 15, 15,
15, 15, 16, 16, 16, 16, 16, 16, 16, 16,
17, 17, 17, 17, 17, 17, 17, 17, 17, 18,
18, 18, 18, 18, 18, 18, 18, 19, 19, 19,
19, 19, 19, 19, 19, 20, 20, 20, 20, 20,
20, 20, 20, 21, 21, 21, 21, 21, 21, 21,
21, 22, 22, 22, 22, 22, 22, 22, 22, 22,
23, 23, 23, 23, 23, 23, 23, 23, 24, 24,
24, 24, 24, 24, 24, 24, 25, 25, 25, 25,
25, 25, 25, 25, 26, 26, 26, 26, 26, 26,
26, 26, 26, 27, 27, 27, 27, 27, 27, 27,
27, 28, 28, 28, 28, 28, 28, 28, 28, 29,
29, 29, 29, 29, 29, 29, 29, 30, 30, 30,
30, 30, 30, 30, 30, 31};
const uint8_t Javelin::Data::BITSCALE_8_TO_4_FLOOR[256] = {
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 3, 3, 3, 3, 3, 3, 3, 3, 3,
3, 3, 3, 3, 3, 3, 3, 3, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 5, 5, 5, 5, 5,
5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
5, 5, 6, 6, 6, 6, 6, 6, 6, 6,
6, 6, 6, 6, 6, 6, 6, 6, 6, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 8, 8, 8, 8,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
10, 10, 10, 10, 10, 10, 10, 10, 10, 10,
10, 10, 10, 10, 10, 10, 10, 11, 11, 11,
11, 11, 11, 11, 11, 11, 11, 11, 11, 11,
11, 11, 11, 11, 12, 12, 12, 12, 12, 12,
12, 12, 12, 12, 12, 12, 12, 12, 12, 12,
12, 13, 13, 13, 13, 13, 13, 13, 13, 13,
13, 13, 13, 13, 13, 13, 13, 13, 14, 14,
14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
14, 14, 14, 14, 14, 15};
const uint8_t Javelin::Data::BITSCALE_8_TO_3_FLOOR[256] = {
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
3, 3, 3, 3, 3, 3, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 5, 5, 5, 5, 5, 5, 5,
5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
5, 5, 5, 5, 5, 5, 5, 5, 5, 6,
6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
6, 6, 6, 6, 6, 7};
const uint8_t Javelin::Data::BITSCALE_8_TO_5_CEIL[256] = {
0, 1, 1, 1, 1, 1, 1, 1, 1, 2,
2, 2, 2, 2, 2, 2, 2, 3, 3, 3,
3, 3, 3, 3, 3, 4, 4, 4, 4, 4,
4, 4, 4, 5, 5, 5, 5, 5, 5, 5,
5, 5, 6, 6, 6, 6, 6, 6, 6, 6,
7, 7, 7, 7, 7, 7, 7, 7, 8, 8,
8, 8, 8, 8, 8, 8, 9, 9, 9, 9,
9, 9, 9, 9, 9, 10, 10, 10, 10, 10,
10, 10, 10, 11, 11, 11, 11, 11, 11, 11,
11, 12, 12, 12, 12, 12, 12, 12, 12, 13,
13, 13, 13, 13, 13, 13, 13, 14, 14, 14,
14, 14, 14, 14, 14, 14, 15, 15, 15, 15,
15, 15, 15, 15, 16, 16, 16, 16, 16, 16,
16, 16, 17, 17, 17, 17, 17, 17, 17, 17,
18, 18, 18, 18, 18, 18, 18, 18, 18, 19,
19, 19, 19, 19, 19, 19, 19, 20, 20, 20,
20, 20, 20, 20, 20, 21, 21, 21, 21, 21,
21, 21, 21, 22, 22, 22, 22, 22, 22, 22,
22, 23, 23, 23, 23, 23, 23, 23, 23, 23,
24, 24, 24, 24, 24, 24, 24, 24, 25, 25,
25, 25, 25, 25, 25, 25, 26, 26, 26, 26,
26, 26, 26, 26, 27, 27, 27, 27, 27, 27,
27, 27, 27, 28, 28, 28, 28, 28, 28, 28,
28, 29, 29, 29, 29, 29, 29, 29, 29, 30,
30, 30, 30, 30, 30, 30, 30, 31, 31, 31,
31, 31, 31, 31, 31, 31};
const uint8_t Javelin::Data::BITSCALE_8_TO_4_CEIL[256] = {
0, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 3, 3, 3, 3, 3,
3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
3, 3, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4, 4, 5,
5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
5, 5, 5, 5, 5, 5, 6, 6, 6, 6,
6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
6, 6, 6, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 8, 8, 8, 8, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 10, 10, 10, 10, 10, 10,
10, 10, 10, 10, 10, 10, 10, 10, 10, 10,
10, 11, 11, 11, 11, 11, 11, 11, 11, 11,
11, 11, 11, 11, 11, 11, 11, 11, 12, 12,
12, 12, 12, 12, 12, 12, 12, 12, 12, 12,
12, 12, 12, 12, 12, 13, 13, 13, 13, 13,
13, 13, 13, 13, 13, 13, 13, 13, 13, 13,
13, 13, 14, 14, 14, 14, 14, 14, 14, 14,
14, 14, 14, 14, 14, 14, 14, 14, 14, 15,
15, 15, 15, 15, 15, 15, 15, 15, 15, 15,
15, 15, 15, 15, 15, 15};
const uint8_t Javelin::Data::BITSCALE_8_TO_3_CEIL[256] = {
0, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 3, 3, 3, 3, 3, 3, 3,
3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 5, 5, 5, 5,
5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
5, 5, 5, 6, 6, 6, 6, 6, 6, 6,
6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
6, 6, 6, 6, 6, 6, 6, 6, 6, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7};

28
thirdparty/pvrtccompressor/BitScale.h vendored
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@ -1,28 +0,0 @@
//============================================================================
#pragma once
#include "core/typedefs.h"
//============================================================================
namespace Javelin
{
namespace Data
{
//============================================================================
extern const uint8_t BITSCALE_5_TO_8[32];
extern const uint8_t BITSCALE_4_TO_8[16];
extern const uint8_t BITSCALE_3_TO_8[8];
extern const uint8_t BITSCALE_8_TO_5_FLOOR[256];
extern const uint8_t BITSCALE_8_TO_4_FLOOR[256];
extern const uint8_t BITSCALE_8_TO_3_FLOOR[256];
extern const uint8_t BITSCALE_8_TO_5_CEIL[256];
extern const uint8_t BITSCALE_8_TO_4_CEIL[256];
extern const uint8_t BITSCALE_8_TO_3_CEIL[256];
//============================================================================
} // namespace Data
} // namespace Javelin
//============================================================================

19
thirdparty/pvrtccompressor/BitUtility.h vendored
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@ -1,19 +0,0 @@
#pragma once
namespace Javelin {
class BitUtility {
public:
static bool IsPowerOf2(unsigned int x) {
return (x & (x - 1)) == 0;
}
static unsigned int RotateRight(unsigned int value, unsigned int shift) {
if ((shift &= sizeof(value) * 8 - 1) == 0) {
return value;
}
return (value >> shift) | (value << (sizeof(value) * 8 - shift));
}
};
}

34
thirdparty/pvrtccompressor/Bitmap.h vendored
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@ -1,34 +0,0 @@
#pragma once
#include "Point2.h"
namespace Javelin {
class Bitmap {
public:
int width;
int height;
unsigned char *data;
Bitmap(int w, int h, int bytesPerPixel)
: width(w)
, height(h)
, data(new unsigned char[width * height * bytesPerPixel]) {
}
virtual ~Bitmap() {
delete [] data;
}
Point2<int> GetSize() const { return Point2<int>(width, height); }
int GetArea() const { return width * height; }
int GetBitmapWidth() const { return width; }
int GetBitmapHeight() const { return height; }
const unsigned char *GetRawData() const { return data; }
};
}

152
thirdparty/pvrtccompressor/ColorRgba.h vendored
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@ -1,152 +0,0 @@
#pragma once
namespace Javelin {
template<typename T>
class ColorRgb {
public:
T b;
T g;
T r;
ColorRgb()
: b(0)
, g(0)
, r(0) {
}
ColorRgb(T red, T green, T blue)
: b(blue)
, g(green)
, r(red) {
}
ColorRgb(const ColorRgb<T> &x)
: b(x.b)
, g(x.g)
, r(x.r) {
}
ColorRgb<int> operator *(int x) {
return ColorRgb<int>(r * x, g * x, b * x);
}
ColorRgb<int> operator +(const ColorRgb<T> &x) const {
return ColorRgb<int>(r + (int)x.r, g + (int)x.g, b + (int)x.b);
}
ColorRgb<int> operator -(const ColorRgb<T> &x) const {
return ColorRgb<int>(r - (int)x.r, g - (int)x.g, b - (int)x.b);
}
int operator %(const ColorRgb<T> &x) const {
return r * (int)x.r + g * (int)x.g + b * (int)x.b;
}
bool operator ==(const ColorRgb<T> &x) const {
return r == x.r && g == x.g && b == x.b;
}
bool operator !=(const ColorRgb<T> &x) const {
return r != x.r || g != x.g || b != x.b;
}
void SetMin(const ColorRgb<T> &x) {
if (x.r < r) {
r = x.r;
}
if (x.g < g) {
g = x.g;
}
if (x.b < b) {
b = x.b;
}
}
void SetMax(const ColorRgb<T> &x) {
if (x.r > r) {
r = x.r;
}
if (x.g > g) {
g = x.g;
}
if (x.b > b) {
b = x.b;
}
}
};
template<typename T>
class ColorRgba : public ColorRgb<T> {
public:
T a;
ColorRgba() :
a(0) {
}
ColorRgba(T red, T green, T blue, T alpha)
: ColorRgb<T>(red, green, blue)
, a(alpha) {
}
ColorRgba(const ColorRgba<T> &x)
: ColorRgb<T>(x.r, x.g, x.b)
, a(x.a) {
}
ColorRgba<int> operator *(int x) {
return ColorRgba<T>(ColorRgb<T>::r * x,
ColorRgb<T>::g * x,
ColorRgb<T>::b * x,
a * x);
}
ColorRgba<int> operator +(const ColorRgba<T> &x) {
return ColorRgba<T>(ColorRgb<T>::r + (int)x.r,
ColorRgb<T>::g + (int)x.g,
ColorRgb<T>::b + (int)x.b,
a + (int)x.a);
}
ColorRgba<int> operator -(const ColorRgba<T> &x) {
return ColorRgba<T>(ColorRgb<T>::r - (int)x.r,
ColorRgb<T>::g - (int)x.g,
ColorRgb<T>::b - (int)x.b,
a - (int)x.a);
}
int operator %(const ColorRgba<T> &x) {
return ColorRgb<T>::r * (int)x.r +
ColorRgb<T>::g * (int)x.g +
ColorRgb<T>::b * (int)x.b +
a * (int)x.a;
}
bool operator ==(const ColorRgba<T> &x) {
return ColorRgb<T>::r == x.r && ColorRgb<T>::g == x.g &&
ColorRgb<T>::b == x.b && a == x.a;
}
bool operator !=(const ColorRgba<T> &x) {
return ColorRgb<T>::r != x.r || ColorRgb<T>::g != x.g ||
ColorRgb<T>::b != x.b || a != x.a;
}
void SetMin(const ColorRgba<T> &x) {
ColorRgb<T>::SetMin(x);
if (x.a < a) {
a = x.a;
}
}
void SetMax(const ColorRgba<T> &x) {
ColorRgb<T>::SetMax(x);
if (x.a > a) {
a = x.a;
}
}
};
}

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thirdparty/pvrtccompressor/Interval.h vendored
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#pragma once
namespace Javelin {
template<typename T>
class Interval {
public:
T min;
T max;
Interval() {
}
Interval<T> &operator|=(const T &x) {
min.SetMin(x);
max.SetMax(x);
return *this;
}
};
}

25
thirdparty/pvrtccompressor/LICENSE.TXT vendored
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@ -1,25 +0,0 @@
Copyright © 2014, Jeffrey Lim. All Rights Reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
3. The name of the author may not be used to endorse or promote products
derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR
BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.

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//============================================================================
#include "MortonTable.h"
//============================================================================
const unsigned short Javelin::Data::MORTON_TABLE[256] =
{
0x0000, 0x0001, 0x0004, 0x0005, 0x0010, 0x0011, 0x0014, 0x0015,
0x0040, 0x0041, 0x0044, 0x0045, 0x0050, 0x0051, 0x0054, 0x0055,
0x0100, 0x0101, 0x0104, 0x0105, 0x0110, 0x0111, 0x0114, 0x0115,
0x0140, 0x0141, 0x0144, 0x0145, 0x0150, 0x0151, 0x0154, 0x0155,
0x0400, 0x0401, 0x0404, 0x0405, 0x0410, 0x0411, 0x0414, 0x0415,
0x0440, 0x0441, 0x0444, 0x0445, 0x0450, 0x0451, 0x0454, 0x0455,
0x0500, 0x0501, 0x0504, 0x0505, 0x0510, 0x0511, 0x0514, 0x0515,
0x0540, 0x0541, 0x0544, 0x0545, 0x0550, 0x0551, 0x0554, 0x0555,
0x1000, 0x1001, 0x1004, 0x1005, 0x1010, 0x1011, 0x1014, 0x1015,
0x1040, 0x1041, 0x1044, 0x1045, 0x1050, 0x1051, 0x1054, 0x1055,
0x1100, 0x1101, 0x1104, 0x1105, 0x1110, 0x1111, 0x1114, 0x1115,
0x1140, 0x1141, 0x1144, 0x1145, 0x1150, 0x1151, 0x1154, 0x1155,
0x1400, 0x1401, 0x1404, 0x1405, 0x1410, 0x1411, 0x1414, 0x1415,
0x1440, 0x1441, 0x1444, 0x1445, 0x1450, 0x1451, 0x1454, 0x1455,
0x1500, 0x1501, 0x1504, 0x1505, 0x1510, 0x1511, 0x1514, 0x1515,
0x1540, 0x1541, 0x1544, 0x1545, 0x1550, 0x1551, 0x1554, 0x1555,
0x4000, 0x4001, 0x4004, 0x4005, 0x4010, 0x4011, 0x4014, 0x4015,
0x4040, 0x4041, 0x4044, 0x4045, 0x4050, 0x4051, 0x4054, 0x4055,
0x4100, 0x4101, 0x4104, 0x4105, 0x4110, 0x4111, 0x4114, 0x4115,
0x4140, 0x4141, 0x4144, 0x4145, 0x4150, 0x4151, 0x4154, 0x4155,
0x4400, 0x4401, 0x4404, 0x4405, 0x4410, 0x4411, 0x4414, 0x4415,
0x4440, 0x4441, 0x4444, 0x4445, 0x4450, 0x4451, 0x4454, 0x4455,
0x4500, 0x4501, 0x4504, 0x4505, 0x4510, 0x4511, 0x4514, 0x4515,
0x4540, 0x4541, 0x4544, 0x4545, 0x4550, 0x4551, 0x4554, 0x4555,
0x5000, 0x5001, 0x5004, 0x5005, 0x5010, 0x5011, 0x5014, 0x5015,
0x5040, 0x5041, 0x5044, 0x5045, 0x5050, 0x5051, 0x5054, 0x5055,
0x5100, 0x5101, 0x5104, 0x5105, 0x5110, 0x5111, 0x5114, 0x5115,
0x5140, 0x5141, 0x5144, 0x5145, 0x5150, 0x5151, 0x5154, 0x5155,
0x5400, 0x5401, 0x5404, 0x5405, 0x5410, 0x5411, 0x5414, 0x5415,
0x5440, 0x5441, 0x5444, 0x5445, 0x5450, 0x5451, 0x5454, 0x5455,
0x5500, 0x5501, 0x5504, 0x5505, 0x5510, 0x5511, 0x5514, 0x5515,
0x5540, 0x5541, 0x5544, 0x5545, 0x5550, 0x5551, 0x5554, 0x5555
};
//============================================================================

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thirdparty/pvrtccompressor/MortonTable.h vendored
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//============================================================================
#pragma once
//============================================================================
namespace Javelin
{
namespace Data
{
//============================================================================
extern const unsigned short MORTON_TABLE[256];
//============================================================================
} // namespace Data
} // namespace Javelin
//============================================================================

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thirdparty/pvrtccompressor/Point2.h vendored
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#pragma once
namespace Javelin {
template<typename T>
class Point2 {
public:
T x;
T y;
Point2(int a, int b)
: x(a)
, y(b) {
}
};
}

144
thirdparty/pvrtccompressor/PvrTcDecoder.cpp vendored
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//============================================================================
#include "PvrTcDecoder.h"
#include "PvrTcPacket.h"
#include "MortonTable.h"
#include <assert.h>
//============================================================================
using namespace Javelin;
using Data::MORTON_TABLE;
//============================================================================
inline unsigned PvrTcDecoder::GetMortonNumber(int x, int y)
{
return MORTON_TABLE[x >> 8] << 17 | MORTON_TABLE[y >> 8] << 16 | MORTON_TABLE[x & 0xFF] << 1 | MORTON_TABLE[y & 0xFF];
}
//============================================================================
void PvrTcDecoder::DecodeRgb4Bpp(ColorRgb<unsigned char>* result, const Point2<int>& size, const void* data)
{
assert(size.x == size.y);
const int blocks = size.x / 4;
const int blockMask = blocks-1;
const PvrTcPacket* packets = static_cast<const PvrTcPacket*>(data);
for(int y = 0; y < blocks; ++y)
{
for(int x = 0; x < blocks; ++x)
{
const PvrTcPacket* packet = packets + GetMortonNumber(x, y);
unsigned mod = packet->modulationData;
const unsigned char (*weights)[4] = PvrTcPacket::WEIGHTS + 4*packet->usePunchthroughAlpha;
const unsigned char (*factor)[4] = PvrTcPacket::BILINEAR_FACTORS;
for(int py = 0; py < 4; ++py)
{
const int yOffset = (py < 2) ? -1 : 0;
const int y0 = (y + yOffset) & blockMask;
const int y1 = (y0+1) & blockMask;
for(int px = 0; px < 4; ++px)
{
const int xOffset = (px < 2) ? -1 : 0;
const int x0 = (x + xOffset) & blockMask;
const int x1 = (x0+1) & blockMask;
const PvrTcPacket* p0 = packets + GetMortonNumber(x0, y0);
const PvrTcPacket* p1 = packets + GetMortonNumber(x1, y0);
const PvrTcPacket* p2 = packets + GetMortonNumber(x0, y1);
const PvrTcPacket* p3 = packets + GetMortonNumber(x1, y1);
ColorRgb<int> ca = p0->GetColorRgbA() * (*factor)[0] +
p1->GetColorRgbA() * (*factor)[1] +
p2->GetColorRgbA() * (*factor)[2] +
p3->GetColorRgbA() * (*factor)[3];
ColorRgb<int> cb = p0->GetColorRgbB() * (*factor)[0] +
p1->GetColorRgbB() * (*factor)[1] +
p2->GetColorRgbB() * (*factor)[2] +
p3->GetColorRgbB() * (*factor)[3];
const unsigned char* w = weights[mod&3];
ColorRgb<unsigned char> c;
c.r = (ca.r * w[0] + cb.r * w[1]) >> 7;
c.g = (ca.g * w[0] + cb.g * w[1]) >> 7;
c.b = (ca.b * w[0] + cb.b * w[1]) >> 7;
result[(py+y*4)*size.x + (px+x*4)] = c;
mod >>= 2;
factor++;
}
}
}
}
}
void PvrTcDecoder::DecodeRgba4Bpp(ColorRgba<unsigned char>* result, const Point2<int>& size, const void* data)
{
assert(size.x == size.y);
const int blocks = size.x / 4;
const int blockMask = blocks-1;
const PvrTcPacket* packets = static_cast<const PvrTcPacket*>(data);
for(int y = 0; y < blocks; ++y)
{
for(int x = 0; x < blocks; ++x)
{
const PvrTcPacket* packet = packets + GetMortonNumber(x, y);
unsigned mod = packet->modulationData;
const unsigned char (*weights)[4] = PvrTcPacket::WEIGHTS + 4*packet->usePunchthroughAlpha;
const unsigned char (*factor)[4] = PvrTcPacket::BILINEAR_FACTORS;
for(int py = 0; py < 4; ++py)
{
const int yOffset = (py < 2) ? -1 : 0;
const int y0 = (y + yOffset) & blockMask;
const int y1 = (y0+1) & blockMask;
for(int px = 0; px < 4; ++px)
{
const int xOffset = (px < 2) ? -1 : 0;
const int x0 = (x + xOffset) & blockMask;
const int x1 = (x0+1) & blockMask;
const PvrTcPacket* p0 = packets + GetMortonNumber(x0, y0);
const PvrTcPacket* p1 = packets + GetMortonNumber(x1, y0);
const PvrTcPacket* p2 = packets + GetMortonNumber(x0, y1);
const PvrTcPacket* p3 = packets + GetMortonNumber(x1, y1);
ColorRgba<int> ca = p0->GetColorRgbaA() * (*factor)[0] +
p1->GetColorRgbaA() * (*factor)[1] +
p2->GetColorRgbaA() * (*factor)[2] +
p3->GetColorRgbaA() * (*factor)[3];
ColorRgba<int> cb = p0->GetColorRgbaB() * (*factor)[0] +
p1->GetColorRgbaB() * (*factor)[1] +
p2->GetColorRgbaB() * (*factor)[2] +
p3->GetColorRgbaB() * (*factor)[3];
const unsigned char* w = weights[mod&3];
ColorRgba<unsigned char> c;
c.r = (ca.r * w[0] + cb.r * w[1]) >> 7;
c.g = (ca.g * w[0] + cb.g * w[1]) >> 7;
c.b = (ca.b * w[0] + cb.b * w[1]) >> 7;
c.a = (ca.a * w[2] + cb.a * w[3]) >> 7;
result[(py+y*4)*size.x + (px+x*4)] = c;
mod >>= 2;
factor++;
}
}
}
}
}
//============================================================================

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thirdparty/pvrtccompressor/PvrTcDecoder.h vendored
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//============================================================================
#pragma once
#include "Point2.h"
#include "ColorRgba.h"
//============================================================================
namespace Javelin
{
//============================================================================
class PvrTcDecoder
{
public:
static void DecodeRgb4Bpp(ColorRgb<unsigned char>* result, const Point2<int>& size, const void* data);
static void DecodeRgba4Bpp(ColorRgba<unsigned char>* result, const Point2<int>& size, const void* data);
private:
static unsigned GetMortonNumber(int x, int y);
};
//============================================================================
}
//============================================================================

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thirdparty/pvrtccompressor/PvrTcEncoder.cpp vendored
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//============================================================================
#include "PvrTcEncoder.h"
#include "AlphaBitmap.h"
#include "PvrTcPacket.h"
#include "RgbBitmap.h"
#include "RgbaBitmap.h"
#include "MortonTable.h"
#include "BitUtility.h"
#include "Interval.h"
#include <assert.h>
#include <math.h>
#include <stdint.h>
//============================================================================
using namespace Javelin;
using Data::MORTON_TABLE;
//============================================================================
static const unsigned char MODULATION_LUT[16] =
{
0, 0, 0, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 3, 3, 3
};
//============================================================================
inline unsigned PvrTcEncoder::GetMortonNumber(int x, int y)
{
return MORTON_TABLE[x >> 8] << 17 | MORTON_TABLE[y >> 8] << 16 | MORTON_TABLE[x & 0xFF] << 1 | MORTON_TABLE[y & 0xFF];
}
//============================================================================
void PvrTcEncoder::EncodeAlpha2Bpp(void* result, const AlphaBitmap& bitmap)
{
int size = bitmap.GetBitmapWidth();
assert(size == bitmap.GetBitmapHeight());
assert(BitUtility::IsPowerOf2(size));
// Blocks in each dimension.
int xBlocks = size/8;
int yBlocks = size/4;
const unsigned char* bitmapData = bitmap.GetRawData();
PvrTcPacket* packets = static_cast<PvrTcPacket*>(result);
for(int y = 0; y < yBlocks; ++y)
{
for(int x = 0; x < xBlocks; ++x)
{
PvrTcPacket* packet = packets + GetMortonNumber(x, y);
packet->usePunchthroughAlpha = 0;
packet->colorAIsOpaque = 0;
packet->colorA = 0x7ff; // White, with 0 alpha
packet->colorBIsOpaque = 1;
packet->colorB = 0x7fff; // White with full alpha
const unsigned char* blockBitmapData = &bitmapData[y*4*size + x*8];
uint32_t modulationData = 0;
for(int py = 0; py < 4; ++py)
{
const unsigned char* rowBitmapData = blockBitmapData;
for(int px = 0; px < 8; ++px)
{
unsigned char pixel = *rowBitmapData++;
modulationData = BitUtility::RotateRight(modulationData | (pixel >> 7), 1);
}
blockBitmapData += size;
}
packet->modulationData = modulationData;
}
}
}
void PvrTcEncoder::EncodeAlpha4Bpp(void* result, const AlphaBitmap& bitmap)
{
int size = bitmap.GetBitmapWidth();
assert(size == bitmap.GetBitmapHeight());
assert(BitUtility::IsPowerOf2(size));
// Blocks in each dimension.
int blocks = size/4;
const unsigned char* bitmapData = bitmap.GetRawData();
PvrTcPacket* packets = static_cast<PvrTcPacket*>(result);
for(int y = 0; y < blocks; ++y)
{
for(int x = 0; x < blocks; ++x)
{
PvrTcPacket* packet = packets + GetMortonNumber(x, y);
packet->usePunchthroughAlpha = 0;
packet->colorAIsOpaque = 0;
packet->colorA = 0x7ff; // White, with 0 alpha
packet->colorBIsOpaque = 1;
packet->colorB = 0x7fff; // White with full alpha
const unsigned char* blockBitmapData = &bitmapData[(y*size + x)*4];
uint32_t modulationData = 0;
for(int py = 0; py < 4; ++py)
{
const unsigned char* rowBitmapData = blockBitmapData;
for(int px = 0; px < 4; ++px)
{
unsigned char pixel = *rowBitmapData++;
modulationData = BitUtility::RotateRight(modulationData | MODULATION_LUT[pixel>>4], 2);
}
blockBitmapData += size;
}
packet->modulationData = modulationData;
}
}
}
//============================================================================
typedef Interval<ColorRgb<unsigned char> > ColorRgbBoundingBox;
static void CalculateBoundingBox(ColorRgbBoundingBox& cbb, const RgbBitmap& bitmap, int blockX, int blockY)
{
int size = bitmap.GetBitmapWidth();
const ColorRgb<unsigned char>* data = bitmap.GetData() + blockY * 4 * size + blockX * 4;
cbb.min = data[0];
cbb.max = data[0];
cbb |= data[1];
cbb |= data[2];
cbb |= data[3];
cbb |= data[size];
cbb |= data[size+1];
cbb |= data[size+2];
cbb |= data[size+3];
cbb |= data[2*size];
cbb |= data[2*size+1];
cbb |= data[2*size+2];
cbb |= data[2*size+3];
cbb |= data[3*size];
cbb |= data[3*size+1];
cbb |= data[3*size+2];
cbb |= data[3*size+3];
}
void PvrTcEncoder::EncodeRgb4Bpp(void* result, const RgbBitmap& bitmap)
{
assert(bitmap.GetBitmapWidth() == bitmap.GetBitmapHeight());
assert(BitUtility::IsPowerOf2(bitmap.GetBitmapWidth()));
const int size = bitmap.GetBitmapWidth();
const int blocks = size / 4;
const int blockMask = blocks-1;
PvrTcPacket* packets = static_cast<PvrTcPacket*>(result);
for(int y = 0; y < blocks; ++y)
{
for(int x = 0; x < blocks; ++x)
{
ColorRgbBoundingBox cbb;
CalculateBoundingBox(cbb, bitmap, x, y);
PvrTcPacket* packet = packets + GetMortonNumber(x, y);
packet->usePunchthroughAlpha = 0;
packet->SetColorA(cbb.min);
packet->SetColorB(cbb.max);
}
}
for(int y = 0; y < blocks; ++y)
{
for(int x = 0; x < blocks; ++x)
{
const unsigned char (*factor)[4] = PvrTcPacket::BILINEAR_FACTORS;
const ColorRgb<unsigned char>* data = bitmap.GetData() + y * 4 * size + x * 4;
uint32_t modulationData = 0;
for(int py = 0; py < 4; ++py)
{
const int yOffset = (py < 2) ? -1 : 0;
const int y0 = (y + yOffset) & blockMask;
const int y1 = (y0+1) & blockMask;
for(int px = 0; px < 4; ++px)
{
const int xOffset = (px < 2) ? -1 : 0;
const int x0 = (x + xOffset) & blockMask;
const int x1 = (x0+1) & blockMask;
const PvrTcPacket* p0 = packets + GetMortonNumber(x0, y0);
const PvrTcPacket* p1 = packets + GetMortonNumber(x1, y0);
const PvrTcPacket* p2 = packets + GetMortonNumber(x0, y1);
const PvrTcPacket* p3 = packets + GetMortonNumber(x1, y1);
ColorRgb<int> ca = p0->GetColorRgbA() * (*factor)[0] +
p1->GetColorRgbA() * (*factor)[1] +
p2->GetColorRgbA() * (*factor)[2] +
p3->GetColorRgbA() * (*factor)[3];
ColorRgb<int> cb = p0->GetColorRgbB() * (*factor)[0] +
p1->GetColorRgbB() * (*factor)[1] +
p2->GetColorRgbB() * (*factor)[2] +
p3->GetColorRgbB() * (*factor)[3];
const ColorRgb<unsigned char>& pixel = data[py*size + px];
ColorRgb<int> d = cb - ca;
ColorRgb<int> p;
p.r=pixel.r*16;
p.g=pixel.g*16;
p.b=pixel.b*16;
ColorRgb<int> v = p - ca;
// PVRTC uses weightings of 0, 3/8, 5/8 and 1
// The boundaries for these are 3/16, 1/2 (=8/16), 13/16
int projection = (v % d) * 16;
int lengthSquared = d % d;
if(projection > 3*lengthSquared) modulationData++;
if(projection > 8*lengthSquared) modulationData++;
if(projection > 13*lengthSquared) modulationData++;
modulationData = BitUtility::RotateRight(modulationData, 2);
factor++;
}
}
PvrTcPacket* packet = packets + GetMortonNumber(x, y);
packet->modulationData = modulationData;
}
}
}
//============================================================================
static void CalculateBoundingBox(ColorRgbBoundingBox& cbb, const RgbaBitmap& bitmap, int blockX, int blockY)
{
int size = bitmap.GetBitmapWidth();
const ColorRgba<unsigned char>* data = bitmap.GetData() + blockY * 4 * size + blockX * 4;
cbb.min = data[0];
cbb.max = data[0];
cbb |= data[1];
cbb |= data[2];
cbb |= data[3];
cbb |= data[size];
cbb |= data[size+1];
cbb |= data[size+2];
cbb |= data[size+3];
cbb |= data[2*size];
cbb |= data[2*size+1];
cbb |= data[2*size+2];
cbb |= data[2*size+3];
cbb |= data[3*size];
cbb |= data[3*size+1];
cbb |= data[3*size+2];
cbb |= data[3*size+3];
}
void PvrTcEncoder::EncodeRgb4Bpp(void* result, const RgbaBitmap& bitmap)
{
assert(bitmap.GetBitmapWidth() == bitmap.GetBitmapHeight());
assert(BitUtility::IsPowerOf2(bitmap.GetBitmapWidth()));
const int size = bitmap.GetBitmapWidth();
const int blocks = size / 4;
const int blockMask = blocks-1;
PvrTcPacket* packets = static_cast<PvrTcPacket*>(result);
for(int y = 0; y < blocks; ++y)
{
for(int x = 0; x < blocks; ++x)
{
ColorRgbBoundingBox cbb;
CalculateBoundingBox(cbb, bitmap, x, y);
PvrTcPacket* packet = packets + GetMortonNumber(x, y);
packet->usePunchthroughAlpha = 0;
packet->SetColorA(cbb.min);
packet->SetColorB(cbb.max);
}
}
for(int y = 0; y < blocks; ++y)
{
for(int x = 0; x < blocks; ++x)
{
const unsigned char (*factor)[4] = PvrTcPacket::BILINEAR_FACTORS;
const ColorRgba<unsigned char>* data = bitmap.GetData() + y * 4 * size + x * 4;
uint32_t modulationData = 0;
for(int py = 0; py < 4; ++py)
{
const int yOffset = (py < 2) ? -1 : 0;
const int y0 = (y + yOffset) & blockMask;
const int y1 = (y0+1) & blockMask;
for(int px = 0; px < 4; ++px)
{
const int xOffset = (px < 2) ? -1 : 0;
const int x0 = (x + xOffset) & blockMask;
const int x1 = (x0+1) & blockMask;
const PvrTcPacket* p0 = packets + GetMortonNumber(x0, y0);
const PvrTcPacket* p1 = packets + GetMortonNumber(x1, y0);
const PvrTcPacket* p2 = packets + GetMortonNumber(x0, y1);
const PvrTcPacket* p3 = packets + GetMortonNumber(x1, y1);
ColorRgb<int> ca = p0->GetColorRgbA() * (*factor)[0] +
p1->GetColorRgbA() * (*factor)[1] +
p2->GetColorRgbA() * (*factor)[2] +
p3->GetColorRgbA() * (*factor)[3];
ColorRgb<int> cb = p0->GetColorRgbB() * (*factor)[0] +
p1->GetColorRgbB() * (*factor)[1] +
p2->GetColorRgbB() * (*factor)[2] +
p3->GetColorRgbB() * (*factor)[3];
const ColorRgb<unsigned char>& pixel = data[py*size + px];
ColorRgb<int> d = cb - ca;
ColorRgb<int> p;
p.r=pixel.r*16;
p.g=pixel.g*16;
p.b=pixel.b*16;
ColorRgb<int> v = p - ca;
// PVRTC uses weightings of 0, 3/8, 5/8 and 1
// The boundaries for these are 3/16, 1/2 (=8/16), 13/16
int projection = (v % d) * 16;
int lengthSquared = d % d;
if(projection > 3*lengthSquared) modulationData++;
if(projection > 8*lengthSquared) modulationData++;
if(projection > 13*lengthSquared) modulationData++;
modulationData = BitUtility::RotateRight(modulationData, 2);
factor++;
}
}
PvrTcPacket* packet = packets + GetMortonNumber(x, y);
packet->modulationData = modulationData;
}
}
}
//============================================================================
typedef Interval<ColorRgba<unsigned char> > ColorRgbaBoundingBox;
static void CalculateBoundingBox(ColorRgbaBoundingBox& cbb, const RgbaBitmap& bitmap, int blockX, int blockY)
{
int size = bitmap.GetBitmapWidth();
const ColorRgba<unsigned char>* data = bitmap.GetData() + blockY * 4 * size + blockX * 4;
cbb.min = data[0];
cbb.max = data[0];
cbb |= data[1];
cbb |= data[2];
cbb |= data[3];
cbb |= data[size];
cbb |= data[size+1];
cbb |= data[size+2];
cbb |= data[size+3];
cbb |= data[2*size];
cbb |= data[2*size+1];
cbb |= data[2*size+2];
cbb |= data[2*size+3];
cbb |= data[3*size];
cbb |= data[3*size+1];
cbb |= data[3*size+2];
cbb |= data[3*size+3];
}
void PvrTcEncoder::EncodeRgba4Bpp(void* result, const RgbaBitmap& bitmap)
{
assert(bitmap.GetBitmapWidth() == bitmap.GetBitmapHeight());
assert(BitUtility::IsPowerOf2(bitmap.GetBitmapWidth()));
const int size = bitmap.GetBitmapWidth();
const int blocks = size / 4;
const int blockMask = blocks-1;
PvrTcPacket* packets = static_cast<PvrTcPacket*>(result);
for(int y = 0; y < blocks; ++y)
{
for(int x = 0; x < blocks; ++x)
{
ColorRgbaBoundingBox cbb;
CalculateBoundingBox(cbb, bitmap, x, y);
PvrTcPacket* packet = packets + GetMortonNumber(x, y);
packet->usePunchthroughAlpha = 0;
packet->SetColorA(cbb.min);
packet->SetColorB(cbb.max);
}
}
for(int y = 0; y < blocks; ++y)
{
for(int x = 0; x < blocks; ++x)
{
const unsigned char (*factor)[4] = PvrTcPacket::BILINEAR_FACTORS;
const ColorRgba<unsigned char>* data = bitmap.GetData() + y * 4 * size + x * 4;
uint32_t modulationData = 0;
for(int py = 0; py < 4; ++py)
{
const int yOffset = (py < 2) ? -1 : 0;
const int y0 = (y + yOffset) & blockMask;
const int y1 = (y0+1) & blockMask;
for(int px = 0; px < 4; ++px)
{
const int xOffset = (px < 2) ? -1 : 0;
const int x0 = (x + xOffset) & blockMask;
const int x1 = (x0+1) & blockMask;
const PvrTcPacket* p0 = packets + GetMortonNumber(x0, y0);
const PvrTcPacket* p1 = packets + GetMortonNumber(x1, y0);
const PvrTcPacket* p2 = packets + GetMortonNumber(x0, y1);
const PvrTcPacket* p3 = packets + GetMortonNumber(x1, y1);
ColorRgba<int> ca = p0->GetColorRgbaA() * (*factor)[0] +
p1->GetColorRgbaA() * (*factor)[1] +
p2->GetColorRgbaA() * (*factor)[2] +
p3->GetColorRgbaA() * (*factor)[3];
ColorRgba<int> cb = p0->GetColorRgbaB() * (*factor)[0] +
p1->GetColorRgbaB() * (*factor)[1] +
p2->GetColorRgbaB() * (*factor)[2] +
p3->GetColorRgbaB() * (*factor)[3];
const ColorRgba<unsigned char>& pixel = data[py*size + px];
ColorRgba<int> d = cb - ca;
ColorRgba<int> p;
p.r=pixel.r*16;
p.g=pixel.g*16;
p.b=pixel.b*16;
p.a=pixel.a*16;
ColorRgba<int> v = p - ca;
// PVRTC uses weightings of 0, 3/8, 5/8 and 1
// The boundaries for these are 3/16, 1/2 (=8/16), 13/16
int projection = (v % d) * 16;
int lengthSquared = d % d;
if(projection > 3*lengthSquared) modulationData++;
if(projection > 8*lengthSquared) modulationData++;
if(projection > 13*lengthSquared) modulationData++;
modulationData = BitUtility::RotateRight(modulationData, 2);
factor++;
}
}
PvrTcPacket* packet = packets + GetMortonNumber(x, y);
packet->modulationData = modulationData;
}
}
}
//============================================================================

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//============================================================================
#pragma once
#include "ColorRgba.h"
//============================================================================
namespace Javelin
{
//============================================================================
class AlphaBitmap;
class RgbBitmap;
class RgbaBitmap;
class PvrTcEncoder
{
public:
// Result must be large enough for bitmap.GetArea()/4 bytes
static void EncodeAlpha2Bpp(void* result, const AlphaBitmap& bitmap);
// Result must be large enough for bitmap.GetArea()/2 bytes
static void EncodeAlpha4Bpp(void* result, const AlphaBitmap& bitmap);
// Result must be large enough for bitmap.GetArea()/2 bytes
static void EncodeRgb4Bpp(void* result, const RgbBitmap& bitmap);
// Result must be large enough for bitmap.GetArea()/2 bytes
static void EncodeRgb4Bpp(void* result, const RgbaBitmap& bitmap);
// Result must be large enough for bitmap.GetArea()/2 bytes
static void EncodeRgba4Bpp(void* result, const RgbaBitmap& bitmap);
private:
static unsigned GetMortonNumber(int x, int y);
};
//============================================================================
}
//============================================================================

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//============================================================================
#include "PvrTcPacket.h"
#include "BitScale.h"
//============================================================================
using namespace Javelin;
//============================================================================
const unsigned char PvrTcPacket::BILINEAR_FACTORS[16][4] =
{
{ 4, 4, 4, 4 },
{ 2, 6, 2, 6 },
{ 8, 0, 8, 0 },
{ 6, 2, 6, 2 },
{ 2, 2, 6, 6 },
{ 1, 3, 3, 9 },
{ 4, 0, 12, 0 },
{ 3, 1, 9, 3 },
{ 8, 8, 0, 0 },
{ 4, 12, 0, 0 },
{ 16, 0, 0, 0 },
{ 12, 4, 0, 0 },
{ 6, 6, 2, 2 },
{ 3, 9, 1, 3 },
{ 12, 0, 4, 0 },
{ 9, 3, 3, 1 },
};
// Weights are { colorA, colorB, alphaA, alphaB }
const unsigned char PvrTcPacket::WEIGHTS[8][4] =
{
// Weights for Mode=0
{ 8, 0, 8, 0 },
{ 5, 3, 5, 3 },
{ 3, 5, 3, 5 },
{ 0, 8, 0, 8 },
// Weights for Mode=1
{ 8, 0, 8, 0 },
{ 4, 4, 4, 4 },
{ 4, 4, 0, 0 },
{ 0, 8, 0, 8 },
};
//============================================================================
ColorRgb<int> PvrTcPacket::GetColorRgbA() const
{
if(colorAIsOpaque)
{
unsigned char r = colorA >> 9;
unsigned char g = colorA >> 4 & 0x1f;
unsigned char b = colorA & 0xf;
return ColorRgb<int>(Data::BITSCALE_5_TO_8[r],
Data::BITSCALE_5_TO_8[g],
Data::BITSCALE_4_TO_8[b]);
}
else
{
unsigned char r = (colorA >> 7) & 0xf;
unsigned char g = (colorA >> 3) & 0xf;
unsigned char b = colorA & 7;
return ColorRgb<int>(Data::BITSCALE_4_TO_8[r],
Data::BITSCALE_4_TO_8[g],
Data::BITSCALE_3_TO_8[b]);
}
}
ColorRgb<int> PvrTcPacket::GetColorRgbB() const
{
if(colorBIsOpaque)
{
unsigned char r = colorB >> 10;
unsigned char g = colorB >> 5 & 0x1f;
unsigned char b = colorB & 0x1f;
return ColorRgb<int>(Data::BITSCALE_5_TO_8[r],
Data::BITSCALE_5_TO_8[g],
Data::BITSCALE_5_TO_8[b]);
}
else
{
unsigned char r = colorB >> 8 & 0xf;
unsigned char g = colorB >> 4 & 0xf;
unsigned char b = colorB & 0xf;
return ColorRgb<int>(Data::BITSCALE_4_TO_8[r],
Data::BITSCALE_4_TO_8[g],
Data::BITSCALE_4_TO_8[b]);
}
}
ColorRgba<int> PvrTcPacket::GetColorRgbaA() const
{
if(colorAIsOpaque)
{
unsigned char r = colorA >> 9;
unsigned char g = colorA >> 4 & 0x1f;
unsigned char b = colorA & 0xf;
return ColorRgba<int>(Data::BITSCALE_5_TO_8[r],
Data::BITSCALE_5_TO_8[g],
Data::BITSCALE_4_TO_8[b],
255);
}
else
{
unsigned char a = colorA >> 11 & 7;
unsigned char r = colorA >> 7 & 0xf;
unsigned char g = colorA >> 3 & 0xf;
unsigned char b = colorA & 7;
return ColorRgba<int>(Data::BITSCALE_4_TO_8[r],
Data::BITSCALE_4_TO_8[g],
Data::BITSCALE_3_TO_8[b],
Data::BITSCALE_3_TO_8[a]);
}
}
ColorRgba<int> PvrTcPacket::GetColorRgbaB() const
{
if(colorBIsOpaque)
{
unsigned char r = colorB >> 10;
unsigned char g = colorB >> 5 & 0x1f;
unsigned char b = colorB & 0x1f;
return ColorRgba<int>(Data::BITSCALE_5_TO_8[r],
Data::BITSCALE_5_TO_8[g],
Data::BITSCALE_5_TO_8[b],
255);
}
else
{
unsigned char a = colorB >> 12 & 7;
unsigned char r = colorB >> 8 & 0xf;
unsigned char g = colorB >> 4 & 0xf;
unsigned char b = colorB & 0xf;
return ColorRgba<int>(Data::BITSCALE_4_TO_8[r],
Data::BITSCALE_4_TO_8[g],
Data::BITSCALE_4_TO_8[b],
Data::BITSCALE_3_TO_8[a]);
}
}
//============================================================================
void PvrTcPacket::SetColorA(const ColorRgb<unsigned char>& c)
{
int r = Data::BITSCALE_8_TO_5_FLOOR[c.r];
int g = Data::BITSCALE_8_TO_5_FLOOR[c.g];
int b = Data::BITSCALE_8_TO_4_FLOOR[c.b];
colorA = r<<9 | g<<4 | b;
colorAIsOpaque = true;
}
void PvrTcPacket::SetColorB(const ColorRgb<unsigned char>& c)
{
int r = Data::BITSCALE_8_TO_5_CEIL[c.r];
int g = Data::BITSCALE_8_TO_5_CEIL[c.g];
int b = Data::BITSCALE_8_TO_5_CEIL[c.b];
colorB = r<<10 | g<<5 | b;
colorBIsOpaque = true;
}
void PvrTcPacket::SetColorA(const ColorRgba<unsigned char>& c)
{
int a = Data::BITSCALE_8_TO_3_FLOOR[c.a];
if(a == 7)
{
int r = Data::BITSCALE_8_TO_5_FLOOR[c.r];
int g = Data::BITSCALE_8_TO_5_FLOOR[c.g];
int b = Data::BITSCALE_8_TO_4_FLOOR[c.b];
colorA = r<<9 | g<<4 | b;
colorAIsOpaque = true;
}
else
{
int r = Data::BITSCALE_8_TO_4_FLOOR[c.r];
int g = Data::BITSCALE_8_TO_4_FLOOR[c.g];
int b = Data::BITSCALE_8_TO_3_FLOOR[c.b];
colorA = a<<11 | r<<7 | g<<3 | b;
colorAIsOpaque = false;
}
}
void PvrTcPacket::SetColorB(const ColorRgba<unsigned char>& c)
{
int a = Data::BITSCALE_8_TO_3_CEIL[c.a];
if(a == 7)
{
int r = Data::BITSCALE_8_TO_5_CEIL[c.r];
int g = Data::BITSCALE_8_TO_5_CEIL[c.g];
int b = Data::BITSCALE_8_TO_5_CEIL[c.b];
colorB = r<<10 | g<<5 | b;
colorBIsOpaque = true;
}
else
{
int r = Data::BITSCALE_8_TO_4_CEIL[c.r];
int g = Data::BITSCALE_8_TO_4_CEIL[c.g];
int b = Data::BITSCALE_8_TO_4_CEIL[c.b];
colorB = a<<12 | r<<8 | g<<4 | b;
colorBIsOpaque = false;
}
}
//============================================================================

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//============================================================================
//
// Modulation data specifies weightings of colorA to colorB for each pixel
//
// For mode = 0
// 00: 0/8
// 01: 3/8
// 10: 5/8
// 11: 8/8
//
// For mode = 1
// 00: 0/8
// 01: 4/8
// 10: 4/8 with alpha punchthrough
// 11: 8/8
//
// For colorIsOpaque=0
// 3 bits A
// 4 bits R
// 4 bits G
// 3/4 bits B
//
// For colorIsOpaque=1
// 5 bits R
// 5 bits G
// 4/5 bits B
//
//============================================================================
#pragma once
#include "ColorRgba.h"
//============================================================================
namespace Javelin
{
//============================================================================
struct PvrTcPacket
{
unsigned int modulationData;
unsigned usePunchthroughAlpha : 1;
unsigned colorA : 14;
unsigned colorAIsOpaque : 1;
unsigned colorB : 15;
unsigned colorBIsOpaque : 1;
ColorRgb<int> GetColorRgbA() const;
ColorRgb<int> GetColorRgbB() const;
ColorRgba<int> GetColorRgbaA() const;
ColorRgba<int> GetColorRgbaB() const;
void SetColorA(const ColorRgb<unsigned char>& c);
void SetColorB(const ColorRgb<unsigned char>& c);
void SetColorA(const ColorRgba<unsigned char>& c);
void SetColorB(const ColorRgba<unsigned char>& c);
static const unsigned char BILINEAR_FACTORS[16][4];
static const unsigned char WEIGHTS[8][4];
};
//============================================================================
} // namespace Javelin
//============================================================================

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#pragma once
#include "Bitmap.h"
#include "ColorRgba.h"
namespace Javelin {
class RgbBitmap : public Bitmap {
public:
RgbBitmap(int w, int h)
: Bitmap(w, h, 3) {
}
const ColorRgb<unsigned char> *GetData() const {
return reinterpret_cast<ColorRgb<unsigned char> *>(data);
}
ColorRgb<unsigned char> *GetData() {
return reinterpret_cast<ColorRgb<unsigned char> *>(data);
}
};
}

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#pragma once
#include "ColorRgba.h"
#include "Bitmap.h"
namespace Javelin {
class RgbaBitmap : public Bitmap {
public:
RgbaBitmap(int w, int h)
: Bitmap(w, h, 4) {
}
const ColorRgba<unsigned char> *GetData() const {
return reinterpret_cast<ColorRgba<unsigned char> *>(data);
}
ColorRgba<unsigned char> *GetData() {
return reinterpret_cast<ColorRgba<unsigned char> *>(data);
}
};
}