From bdc78a99d865fbb1870890d547053309d2a4c75e Mon Sep 17 00:00:00 2001
From: Luis Michaelis <me@lmichaelis.de>
Date: Sat, 24 Feb 2024 16:33:58 +0100
Subject: [PATCH] feat(ZkTexture): implement `ZkTextureBuilder` API

---
 include/zenkit-capi/Texture.h |  7 +++++++
 src/Texture.cc                | 31 +++++++++++++++++++++++++++++++
 2 files changed, 38 insertions(+)

diff --git a/include/zenkit-capi/Texture.h b/include/zenkit-capi/Texture.h
index 95a197f..5b83ae1 100644
--- a/include/zenkit-capi/Texture.h
+++ b/include/zenkit-capi/Texture.h
@@ -8,6 +8,7 @@
 #ifdef __cplusplus
 	#include <zenkit/Texture.hh>
 using ZkTexture = zenkit::Texture;
+using ZkTextureBuilder = zenkit::TextureBuilder;
 #else
 typedef struct ZkInternal_Texture ZkTexture;
 #endif
@@ -56,3 +57,9 @@ ZKC_API ZkSize ZkTexture_getMipmapRgba(ZkTexture const* slf, ZkSize level, uint8
 
 ZKC_API void ZkTexture_enumerateRawMipmaps(ZkTexture const* slf, ZkTextureMipmapEnumerator cb, void* ctx);
 ZKC_API void ZkTexture_enumerateRgbaMipmaps(ZkTexture const* slf, ZkTextureMipmapEnumerator cb, void* ctx);
+
+ZKC_API ZkTextureBuilder* ZkTextureBuilder_new(ZkSize width, ZkSize height);
+ZKC_API void ZkTextureBuilder_del(ZkTextureBuilder* slf);
+
+ZKC_API bool ZkTextureBuilder_addMipmap(ZkTextureBuilder* slf, ZkByte* buf, ZkSize len, ZkTextureFormat fmt);
+ZKC_API ZkTexture* ZkTextureBuilder_build(ZkTextureBuilder* slf, ZkTextureFormat fmt);
diff --git a/src/Texture.cc b/src/Texture.cc
index 86325b4..fc313b2 100644
--- a/src/Texture.cc
+++ b/src/Texture.cc
@@ -128,3 +128,34 @@ void ZkTexture_enumerateRgbaMipmaps(ZkTexture const* slf, ZkTextureMipmapEnumera
 		if (cb(ctx, i, rgba.data(), rgba.size())) break;
 	}
 }
+
+
+ZkTextureBuilder* ZkTextureBuilder_new(ZkSize width, ZkSize height) {
+	ZKC_TRACE_FN();
+
+	return new ZkTextureBuilder {static_cast<unsigned int>(width), static_cast<unsigned int>(height)};
+}
+
+void ZkTextureBuilder_del(ZkTextureBuilder* slf) {
+	delete[] slf;
+}
+
+bool ZkTextureBuilder_addMipmap(ZkTextureBuilder* slf, ZkByte* buf, ZkSize len, ZkTextureFormat fmt) {
+	ZKC_TRACE_FN();
+	ZKC_CHECK_NULL(slf, buf);
+
+	try {
+		std::vector<uint8_t> dta;
+		dta.assign(buf, buf + len);
+		slf->add_mipmap(std::move(dta), static_cast<zenkit::TextureFormat>(fmt));
+		return true;
+	} catch (zenkit::Error const& exc) {
+		ZKC_LOG_ERROR("ZkTextureBuilder_addMipmap() failed: %s", exc.what());
+		return false;
+	}
+}
+
+ZkTexture* ZkTextureBuilder_build(ZkTextureBuilder* slf, ZkTextureFormat fmt) {
+	auto tex = slf->build(static_cast<zenkit::TextureFormat>(fmt));
+	return ZKC_WRAP_NEW(tex);
+}