From 3695c087829843b108bf55296d7dca39a08f135b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?R=C3=A9mi=20Verschelde?= <rverschelde@gmail.com>
Date: Fri, 27 Sep 2019 14:43:04 +0200
Subject: basis_universal: Use proper basisu_transcoder.h header, fixes Clang
 build

Also renames bu to basisu to be more explicit and match upstream name.
---
 modules/basis_universal/texture_basisu.cpp | 203 +++++++++++++++++++++++++++++
 1 file changed, 203 insertions(+)
 create mode 100644 modules/basis_universal/texture_basisu.cpp

(limited to 'modules/basis_universal/texture_basisu.cpp')

diff --git a/modules/basis_universal/texture_basisu.cpp b/modules/basis_universal/texture_basisu.cpp
new file mode 100644
index 0000000000..20c4974da5
--- /dev/null
+++ b/modules/basis_universal/texture_basisu.cpp
@@ -0,0 +1,203 @@
+#include "texture_basisu.h"
+#if 0
+#include "core/os/os.h"
+
+#ifdef TOOLS_ENABLED
+#include <basisu_comp.h>
+#endif
+
+#include <transcoder/basisu_transcoder.h>
+
+void TextureBasisU::_bind_methods() {
+
+	ClassDB::bind_method(D_METHOD("set_basisu_data", "data"), &TextureBasisU::set_basisu_data);
+	ClassDB::bind_method(D_METHOD("get_basisu_data"), &TextureBasisU::get_data);
+	ClassDB::bind_method(D_METHOD("import"), &TextureBasisU::import);
+
+	ADD_PROPERTY(PropertyInfo(Variant::POOL_BYTE_ARRAY, "basisu_data"), "set_basisu_data", "get_basisu_data");
+
+};
+
+int TextureBasisU::get_width() const {
+
+	return tex_size.x;
+};
+
+int TextureBasisU::get_height() const {
+
+	return tex_size.y;
+};
+
+RID TextureBasisU::get_rid() const {
+
+	return texture;
+};
+
+
+bool TextureBasisU::has_alpha() const {
+
+	return false;
+};
+
+void TextureBasisU::set_flags(uint32_t p_flags) {
+
+	flags = p_flags;
+	VisualServer::get_singleton()->texture_set_flags(texture, p_flags);
+};
+
+uint32_t TextureBasisU::get_flags() const {
+
+	return flags;
+};
+
+
+void TextureBasisU::set_basisu_data(const PoolVector<uint8_t>& p_data) {
+
+#ifdef TOOLS_ENABLED
+	data = p_data;
+#endif
+
+	PoolVector<uint8_t>::Read r = p_data.read();
+	const void* ptr = r.ptr();
+	int size = p_data.size();
+
+	basist::transcoder_texture_format format;
+	Image::Format imgfmt;
+
+	if (OS::get_singleton()->has_feature("s3tc")) {
+
+		format = basist::cTFBC3; // get this from renderer
+		imgfmt = Image::FORMAT_DXT5;
+
+	} else if (OS::get_singleton()->has_feature("etc2")) {
+
+		format = basist::cTFETC2;
+		imgfmt = Image::FORMAT_ETC2_RGBA8;
+	};
+
+	basist::basisu_transcoder tr(NULL);
+
+	ERR_FAIL_COND(!tr.validate_header(ptr, size));
+
+	basist::basisu_image_info info;
+	tr.get_image_info(ptr, size, info, 0);
+	tex_size = Size2(info.m_width, info.m_height);
+
+	int block_size = basist::basis_get_bytes_per_block(format);
+	PoolVector<uint8_t> gpudata;
+	gpudata.resize(info.m_total_blocks * block_size);
+
+	{
+		PoolVector<uint8_t>::Write w = gpudata.write();
+		uint8_t* dst = w.ptr();
+		for (int i=0; i<gpudata.size(); i++)
+			dst[i] = 0x00;
+
+		int ofs = 0;
+		tr.start_transcoding(ptr, size);
+		for (int i=0; i<info.m_total_levels; i++) {
+
+			basist::basisu_image_level_info level;
+			tr.get_image_level_info(ptr, size, level, 0, i);
+
+			bool ret = tr.transcode_image_level(ptr, size, 0, i, dst + ofs, level.m_total_blocks - i, format);
+			if (!ret) {
+				printf("failed! on level %i\n", i);
+				break;
+			};
+
+			ofs += level.m_total_blocks * block_size;
+		};
+	};
+
+	Ref<Image> img;
+	img.instance();
+	img->create(info.m_width, info.m_height, info.m_total_levels > 1, imgfmt, gpudata);
+
+	VisualServer::get_singleton()->texture_allocate(texture, tex_size.x, tex_size.y, 0, img->get_format(), VS::TEXTURE_TYPE_2D, flags);
+	VisualServer::get_singleton()->texture_set_data(texture, img);
+};
+
+Error TextureBasisU::import(const Ref<Image>& p_img) {
+
+#ifdef TOOLS_ENABLED
+
+	PoolVector<uint8_t> budata;
+
+	{
+		Image::Format format = p_img->get_format();
+		if (format != Image::FORMAT_RGB8 && format != Image::FORMAT_RGBA8) {
+			ERR_FAIL_V(ERR_INVALID_PARAMETER);
+			return ERR_INVALID_PARAMETER;
+		};
+
+		Ref<Image> copy = p_img->duplicate();
+		if (format == Image::FORMAT_RGB8)
+			copy->convert(Image::FORMAT_RGBA8);
+
+		basisu::image buimg(p_img->get_width(), p_img->get_height());
+		int size = p_img->get_width() * p_img->get_height() * 4;
+
+		PoolVector<uint8_t> vec = copy->get_data();
+		{
+			PoolVector<uint8_t>::Read r = vec.read();
+			memcpy(buimg.get_ptr(), r.ptr(), size);
+		};
+
+		basisu::basis_compressor_params params;
+		params.m_max_endpoint_clusters = 512;
+		params.m_max_selector_clusters = 512;
+		params.m_multithreading = true;
+
+		basisu::job_pool jpool(1);
+		params.m_pJob_pool = &jpool;
+
+		params.m_mip_gen = p_img->get_mipmap_count() > 0;
+		params.m_source_images.push_back(buimg);
+
+		basisu::basis_compressor c;
+		c.init(params);
+
+		int buerr = c.process();
+		if (buerr != basisu::basis_compressor::cECSuccess) {
+			ERR_FAIL_V(ERR_INVALID_PARAMETER);
+			return ERR_INVALID_PARAMETER;
+		};
+
+		const basisu::uint8_vec& buvec = c.get_output_basis_file();
+		budata.resize(buvec.size());
+
+		{
+			PoolVector<uint8_t>::Write w = budata.write();
+			memcpy(w.ptr(), &buvec[0], budata.size());
+		};
+	};
+
+	set_basisu_data(budata);
+
+	return OK;
+#else
+
+	return ERR_UNAVAILABLE;
+#endif
+};
+
+
+PoolVector<uint8_t> TextureBasisU::get_basisu_data() const {
+
+	return data;
+};
+
+TextureBasisU::TextureBasisU() {
+
+	flags = FLAGS_DEFAULT;
+	texture = VisualServer::get_singleton()->texture_create();
+};
+
+
+TextureBasisU::~TextureBasisU() {
+
+	VisualServer::get_singleton()->free(texture);
+};
+
+#endif
-- 
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