Merge pull request #42262 from akien-mga/ios-pvrtc-fixes

iOS: Fix multiple issues with PVRTC import, disable ETC1

editor/editor_export.cpp

@@ -1406,6 +1406,20 @@ String EditorExportPlatform::test_etc2() const {
 	return String();
 }
 
+String EditorExportPlatform::test_etc2_or_pvrtc() const {
+	String driver = ProjectSettings::get_singleton()->get("rendering/quality/driver/driver_name");
+	bool etc2_supported = ProjectSettings::get_singleton()->get("rendering/vram_compression/import_etc2");
+	bool pvrtc_supported = ProjectSettings::get_singleton()->get("rendering/vram_compression/import_pvrtc");
+
+	if (driver == "GLES2" && !pvrtc_supported) {
+		return TTR("Target platform requires 'PVRTC' texture compression for GLES2. Enable 'Import Pvrtc' in Project Settings.");
+	} else if (driver == "Vulkan" && !etc2_supported && !pvrtc_supported) {
+		// FIXME: Review if this is true for Vulkan.
+		return TTR("Target platform requires 'ETC2' or 'PVRTC' texture compression for Vulkan. Enable 'Import Etc 2' or 'Import Pvrtc' in Project Settings.");
+	}
+	return String();
+}
+
 int EditorExport::get_export_preset_count() const {
 	return export_presets.size();
 }

editor/editor_export.h

@@ -277,6 +277,7 @@ public:
 	virtual Ref<Texture2D> get_run_icon() const { return get_logo(); }
 
 	String test_etc2() const; //generic test for etc2 since most platforms use it
+	String test_etc2_or_pvrtc() const; // test for etc2 or pvrtc support for iOS
 	virtual bool can_export(const Ref<EditorExportPreset> &p_preset, String &r_error, bool &r_missing_templates) const = 0;
 
 	virtual List<String> get_binary_extensions(const Ref<EditorExportPreset> &p_preset) const = 0;

modules/pvr/texture_loader_pvr.cpp

@@ -213,10 +213,12 @@ static void _compress_pvrtc4(Image *p_img) {
 			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();
+			copymem(dst, &r[ofs], size);
+			Javelin::ColorRgba<unsigned char> *dp = bm.GetData();
 			for (int j = 0; j < size / 4; j++) {
-				Javelin::ColorRgba<unsigned char> *dp = bm.GetData();
-				/* red and Green colors are swapped.  */
-				new (dp) Javelin::ColorRgba<unsigned char>(r[ofs + 4 * j + 2], r[ofs + 4 * j + 1], r[ofs + 4 * j], r[ofs + 4 * j + 3]);
+				/* 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);

platform/iphone/export/export.cpp

@@ -160,9 +160,8 @@ public:
 
 void EditorExportPlatformIOS::get_preset_features(const Ref<EditorExportPreset> &p_preset, List<String> *r_features) {
 	String driver = ProjectSettings::get_singleton()->get("rendering/quality/driver/driver_name");
-	if (driver == "GLES2") {
-		r_features->push_back("etc");
-	} else if (driver == "Vulkan") {
+	r_features->push_back("pvrtc");
+	if (driver == "Vulkan") {
 		// FIXME: Review if this is correct.
 		r_features->push_back("etc2");
 	}
@@ -1649,7 +1648,7 @@ bool EditorExportPlatformIOS::can_export(const Ref<EditorExportPreset> &p_preset
 		}
 	}
 
-	String etc_error = test_etc2();
+	String etc_error = test_etc2_or_pvrtc();
 	if (etc_error != String()) {
 		valid = false;
 		err += etc_error;