static pixel_format choose_pixel_format(convert_params& params, const crn_comp_params& comp_params, const mipmapped_texture& src_tex, texture_type tex_type) {
const pixel_format src_fmt = src_tex.get_format();
const texture_file_types::format src_file_type = src_tex.get_source_file_type();
const bool is_normal_map = (tex_type == cTextureTypeNormalMap);
if (params.m_always_use_source_pixel_format)
return src_fmt;
// Attempt to choose a reasonable/sane output pixel format.
if (params.m_dst_file_type == texture_file_types::cFormatCRN) {
if (is_normal_map) {
if (pixel_format_helpers::is_dxt(src_fmt))
return src_fmt;
else
return PIXEL_FMT_DXT5_AGBR;
}
} else if (params.m_dst_file_type == texture_file_types::cFormatKTX) {
if ((src_file_type != texture_file_types::cFormatCRN) && (src_file_type != texture_file_types::cFormatKTX) && (src_file_type != texture_file_types::cFormatDDS)) {
if (is_normal_map) {
return pixel_format_helpers::has_alpha(src_fmt) ? PIXEL_FMT_A8R8G8B8 : PIXEL_FMT_R8G8B8;
} else if (pixel_format_helpers::is_grayscale(src_fmt)) {
if (pixel_format_helpers::has_alpha(src_fmt))
return PIXEL_FMT_ETC2A;
else
return PIXEL_FMT_ETC1;
} else if (pixel_format_helpers::has_alpha(src_fmt))
return PIXEL_FMT_ETC2A;
else
return PIXEL_FMT_ETC1;
}
} else if (params.m_dst_file_type == texture_file_types::cFormatDDS) {
if ((src_file_type != texture_file_types::cFormatCRN) && (src_file_type != texture_file_types::cFormatKTX) && (src_file_type != texture_file_types::cFormatDDS)) {
if (is_normal_map) {
return PIXEL_FMT_DXT5_AGBR;
} else if (pixel_format_helpers::is_grayscale(src_fmt)) {
if (pixel_format_helpers::has_alpha(src_fmt))
return comp_params.get_flag(cCRNCompFlagDXT1AForTransparency) ? PIXEL_FMT_DXT1A : PIXEL_FMT_DXT5;
else
return PIXEL_FMT_DXT1;
} else if (pixel_format_helpers::has_alpha(src_fmt))
return comp_params.get_flag(cCRNCompFlagDXT1AForTransparency) ? PIXEL_FMT_DXT1A : PIXEL_FMT_DXT5;
else
return PIXEL_FMT_DXT1;
}
} else {
// Destination is a regular image format.
if (pixel_format_helpers::is_grayscale(src_fmt)) {
if (pixel_format_helpers::has_alpha(src_fmt))
return PIXEL_FMT_A8L8;
else
return PIXEL_FMT_L8;
} else if (pixel_format_helpers::has_alpha(src_fmt))
return PIXEL_FMT_A8R8G8B8;
else
return PIXEL_FMT_R8G8B8;
}
return src_fmt;
}
static void print_comp_params(const crn_comp_params& comp_params) {
console::debug("\nTexture conversion compression parameters:");
console::debug(" Desired bitrate: %3.3f", comp_params.m_target_bitrate);
console::debug(" CRN Quality: %i", comp_params.m_quality_level);
console::debug("CRN C endpoints/selectors: %u %u", comp_params.m_crn_color_endpoint_palette_size, comp_params.m_crn_color_selector_palette_size);
console::debug("CRN A endpoints/selectors: %u %u", comp_params.m_crn_alpha_endpoint_palette_size, comp_params.m_crn_alpha_selector_palette_size);
console::debug(" DXT both block types: %u, Alpha threshold: %u", comp_params.get_flag(cCRNCompFlagUseBothBlockTypes), comp_params.m_dxt1a_alpha_threshold);
console::debug(" DXT compression quality: %s", crn_get_dxt_quality_string(comp_params.m_dxt_quality));
console::debug(" Perceptual: %u, Large Blocks: %u", comp_params.get_flag(cCRNCompFlagPerceptual), comp_params.get_flag(cCRNCompFlagHierarchical));
console::debug(" Compressor: %s", get_dxt_compressor_name(comp_params.m_dxt_compressor_type));
console::debug(" Disable endpoint caching: %u", comp_params.get_flag(cCRNCompFlagDisableEndpointCaching));
console::debug(" Grayscale sampling: %u", comp_params.get_flag(cCRNCompFlagGrayscaleSampling));
console::debug(" Max helper threads: %u", comp_params.m_num_helper_threads);
console::debug("");
}
static bool write_compressed_texture(
mipmapped_texture& work_tex, convert_params& params, crn_comp_params& comp_params, pixel_format dst_format, progress_params& progress_state, bool perceptual, convert_stats& stats) {
comp_params.m_file_type = (params.m_dst_file_type == texture_file_types::cFormatCRN) ? cCRNFileTypeCRN : cCRNFileTypeDDS;
comp_params.m_pProgress_func = crn_progress_callback;
comp_params.m_pProgress_func_data = &progress_state;
comp_params.set_flag(cCRNCompFlagPerceptual, perceptual);
crn_format crn_fmt = pixel_format_helpers::convert_pixel_format_to_best_crn_format(dst_format);
comp_params.m_format = crn_fmt;
console::message("Writing %s texture to file: \"%s\"", crn_get_format_string(crn_fmt), params.m_dst_filename.get_ptr());
uint32 actual_quality_level;
float actual_bitrate;
bool status = work_tex.write_to_file(params.m_dst_filename.get_ptr(), params.m_dst_file_type, &comp_params, &actual_quality_level, &actual_bitrate);
if (!status)
return convert_error(params, "Failed writing output file!");
if (!params.m_no_stats) {
if (!stats.init(params.m_pInput_texture->get_source_filename().get_ptr(), params.m_dst_filename.get_ptr(), *params.m_pIntermediate_texture, params.m_dst_file_type, params.m_lzma_stats)) {
console::warning("Unable to compute output statistics for file: %s", params.m_pInput_texture->get_source_filename().get_ptr());
}
}
return true;
}
bool init(const crn_comp_params ¶ms)
{
m_comp_params = params;
m_pack_params.init(params);
crn_format basic_crn_fmt = crnd::crnd_get_fundamental_dxt_format(params.m_format);
pixel_format basic_pixel_fmt = pixel_format_helpers::convert_crn_format_to_pixel_format(basic_crn_fmt);
if ((params.get_flag(cCRNCompFlagDXT1AForTransparency)) && (basic_pixel_fmt == PIXEL_FMT_DXT1))
basic_pixel_fmt = PIXEL_FMT_DXT1A;
if (!m_image.init(pixel_format_helpers::get_dxt_format(basic_pixel_fmt), cDXTBlockSize, cDXTBlockSize, false))
return false;
return true;
}
static bool convert_and_write_normal_texture(mipmapped_texture& work_tex, convert_params& params, const crn_comp_params& comp_params, pixel_format dst_format, progress_params& progress_state, bool formats_differ, bool perceptual, convert_stats& stats) {
if (formats_differ) {
dxt_image::pack_params pack_params;
pack_params.m_perceptual = perceptual;
pack_params.m_compressor = comp_params.m_dxt_compressor_type;
pack_params.m_pProgress_callback = dxt_progress_callback_func;
pack_params.m_pProgress_callback_user_data_ptr = &progress_state;
pack_params.m_dxt1a_alpha_threshold = comp_params.m_dxt1a_alpha_threshold;
pack_params.m_quality = comp_params.m_dxt_quality;
pack_params.m_endpoint_caching = !comp_params.get_flag(cCRNCompFlagDisableEndpointCaching);
pack_params.m_grayscale_sampling = comp_params.get_flag(cCRNCompFlagGrayscaleSampling);
if ((!comp_params.get_flag(cCRNCompFlagUseBothBlockTypes)) && (!comp_params.get_flag(cCRNCompFlagDXT1AForTransparency)))
pack_params.m_use_both_block_types = false;
pack_params.m_num_helper_threads = comp_params.m_num_helper_threads;
pack_params.m_use_transparent_indices_for_black = comp_params.get_flag(cCRNCompFlagUseTransparentIndicesForBlack);
console::info("Converting texture format from %s to %s", pixel_format_helpers::get_pixel_format_string(work_tex.get_format()), pixel_format_helpers::get_pixel_format_string(dst_format));
timer tm;
tm.start();
bool status = work_tex.convert(dst_format, pack_params);
double t = tm.get_elapsed_secs();
console::info("");
if (!status) {
if (progress_state.m_canceled) {
params.m_canceled = true;
return false;
} else {
return convert_error(params, "Failed converting texture to output format!");
}
}
console::info("Texture format conversion took %3.3fs", t);
}
if (params.m_write_mipmaps_to_multiple_files) {
for (uint f = 0; f < work_tex.get_num_faces(); f++) {
for (uint l = 0; l < work_tex.get_num_levels(); l++) {
dynamic_string filename(params.m_dst_filename.get_ptr());
dynamic_string drv, dir, fn, ext;
if (!file_utils::split_path(params.m_dst_filename.get_ptr(), &drv, &dir, &fn, &ext))
return false;
fn += dynamic_string(cVarArg, "_face%u_mip%u", f, l).get_ptr();
filename = drv + dir + fn + ext;
mip_level* pLevel = work_tex.get_level(f, l);
face_vec face(1);
face[0].push_back(crnlib_new<mip_level>(*pLevel));
mipmapped_texture new_tex;
new_tex.assign(face);
console::info("Writing texture face %u mip level %u to file %s", f, l, filename.get_ptr());
if (!new_tex.write_to_file(filename.get_ptr(), params.m_dst_file_type, NULL, NULL, NULL))
return convert_error(params, "Failed writing output file!");
}
}
} else {
console::message("Writing texture to file: \"%s\"", params.m_dst_filename.get_ptr());
if (params.m_dst_stream) {
if (!work_tex.write_to_stream(params.m_dst_stream, params.m_dst_file_type, NULL, NULL, NULL)) {
return convert_error(params, "Failed writing output stream!");
}
}
else if (!work_tex.write_to_file(params.m_dst_filename.get_ptr(), params.m_dst_file_type, NULL, NULL, NULL)) {
return convert_error(params, "Failed writing output file!");
}
if (!params.m_no_stats) {
if (!stats.init(params.m_pInput_texture->get_source_filename().get_ptr(), params.m_dst_filename.get_ptr(), *params.m_pIntermediate_texture, params.m_dst_file_type, params.m_lzma_stats)) {
console::warning("Unable to compute output statistics for file: %s", params.m_pInput_texture->get_source_filename().get_ptr());
}
}
}
return true;
}
static pixel_format choose_pixel_format(convert_params& params, const crn_comp_params &comp_params, const dds_texture& src_tex, texture_type tex_type)
{
if (params.m_use_source_format)
return src_tex.get_format();
const bool is_normal_map = (tex_type == cTextureTypeNormalMap);
if (params.m_dst_file_type == texture_file_types::cFormatCRN)
{
if (is_normal_map)
{
switch (src_tex.get_format())
{
case PIXEL_FMT_DXN:
case PIXEL_FMT_3DC:
case PIXEL_FMT_DXT5_xGBR:
case PIXEL_FMT_DXT5_AGBR:
case PIXEL_FMT_DXT5_xGxR:
return src_tex.get_format();
default:
return PIXEL_FMT_DXT5_AGBR;
}
}
}
else if (params.m_dst_file_type == texture_file_types::cFormatDDS)
{
if (src_tex.get_source_file_type() != texture_file_types::cFormatCRN)
{
if (is_normal_map)
{
switch (src_tex.get_format())
{
case PIXEL_FMT_DXN:
case PIXEL_FMT_3DC:
case PIXEL_FMT_DXT5_xGBR:
case PIXEL_FMT_DXT5_AGBR:
case PIXEL_FMT_DXT5_xGxR:
return src_tex.get_format();
default:
return PIXEL_FMT_DXT5_AGBR;
}
}
else if (pixel_format_helpers::is_grayscale(src_tex.get_format()))
{
if (pixel_format_helpers::has_alpha(src_tex.get_format()))
return comp_params.get_flag(cCRNCompFlagDXT1AForTransparency) ? PIXEL_FMT_DXT1A : PIXEL_FMT_DXT5;
else
return PIXEL_FMT_DXT1;
}
else if (pixel_format_helpers::has_alpha(src_tex.get_format()))
return comp_params.get_flag(cCRNCompFlagDXT1AForTransparency) ? PIXEL_FMT_DXT1A : PIXEL_FMT_DXT5;
else
return PIXEL_FMT_DXT1;
}
}
else
{
// A regular image format.
if (pixel_format_helpers::is_grayscale(src_tex.get_format()))
{
if (pixel_format_helpers::has_alpha(src_tex.get_format()))
return PIXEL_FMT_A8L8;
else
return PIXEL_FMT_L8;
}
else if (pixel_format_helpers::has_alpha(src_tex.get_format()))
return PIXEL_FMT_A8R8G8B8;
else
return PIXEL_FMT_R8G8B8;
}
return src_tex.get_format();
}