fix: ABI mismatch between skia and imzero_client_cpp (SK_TRIVIAL_ABI macro will be used even when is_trivial_abi is false in build_skia.sh!)

Author: stergiotis

dhall/sourceTreeParts.dhall

@@ -397,7 +397,6 @@ let skia =
 		] : List Text
 	}
 	, defines = {, local = [
-        , "SK_TRIVIAL_ABI=\\[\\[clang::trivial_abi\\]\\]"
         , "SK_GAMMA_APPLY_TO_A8"
         , "SK_ALLOW_STATIC_GLOBAL_INITIALIZERS=1"
         , "GR_TEST_UTILS=1"
@@ -440,6 +439,15 @@ let skia =
 	] : List Text}
 	, cxxflags = {
 		, global = [
+         , "-ffp-contract=off" -- standard compliant fp processing
+         , "-fstrict-aliasing" -- is on on >=O2 optimization
+         , "-fPIC"
+         , "-fvisibility=hidden"
+         , "-fdata-sections"
+         , "-ffunction-sections"
+         , "-fvisibility-inlines-hidden"
+         , "-fno-exceptions"
+         , "-fno-rtti"
 		] : List Text
 		, local = [
 		, "-Wno-unused-parameter"
@@ -592,7 +600,6 @@ let skiaSdl = \(asan : Bool) ->
 	}
 	, defines = {, local = [
 		      , "SK_DEBUG"
-        , "SK_TRIVIAL_ABI=\\[\\[clang::trivial_abi\\]\\]"
         , "SK_GAMMA_APPLY_TO_A8"
         , "SK_ALLOW_STATIC_GLOBAL_INITIALIZERS=1"
         --, "GR_TEST_UTILS=1"

skia/CMakeLists.txt

@@ -95,6 +95,7 @@ target_compile_options(imguiTextedit PUBLIC -Wno-unused-variable)
 add_library(skiaSdl OBJECT "${CMAKE_CURRENT_LIST_DIR}/./skia/sdl3/imgui_impl_opengl3.cpp"
 "${CMAKE_CURRENT_LIST_DIR}/./skia/sdl3/imgui_impl_sdl3.cpp"
 "${CMAKE_CURRENT_LIST_DIR}/./skia/sdl3/main.cpp"
+"${CMAKE_CURRENT_LIST_DIR}/./skia/sdl3/app.cpp"
 "${CMAKE_CURRENT_LIST_DIR}/./skia/paragraph.cpp"
 "${CMAKE_CURRENT_LIST_DIR}/./skia/cliOptions.cpp"
 "${CMAKE_CURRENT_LIST_DIR}/./skia/setupUI.cpp"
@@ -104,7 +105,6 @@ add_library(skiaSdl OBJECT "${CMAKE_CURRENT_LIST_DIR}/./skia/sdl3/imgui_impl_ope
 "${CMAKE_CURRENT_LIST_DIR}/./contrib/skia/src/gpu/ganesh/gl/GrGLUtil.cpp")
 target_compile_options(skiaSdl PUBLIC -Wno-unused-parameter)
 target_compile_definitions(skiaSdl PUBLIC SK_DEBUG
-SK_TRIVIAL_ABI=\[\[clang::trivial_abi\]\]
 SK_GAMMA_APPLY_TO_A8
 SK_ALLOW_STATIC_GLOBAL_INITIALIZERS=1
 SK_TYPEFACE_FACTORY_FREETYPE

skia/skia/sdl3/app.cpp

@@ -520,4 +520,12 @@ int App::Run(CliOptions &opts) {
     return 0;
 }
 
-App::App() = default;
+App::App() {
+    fTotalVectorCmdSerializedSize = 0;
+    fSkpBytesWritten = 0;
+    fSvgBytesWritten = 0;
+    fPngBytesWritten = 0;
+    fBackgroundColor = SK_ColorRED;
+    fFffiInterpreter = false;
+    fUseVectorCmd = false;
+}

skia/skia/sdl3/app.h

@@ -15,14 +15,14 @@ class App {
     void Paint(SkSurface* surface, int width, int height);
     void DrawImGuiVectorCmdsFB(SkCanvas &canvas);
 
-    SkPaint fFontPaint{};
-    VectorCmdSkiaRenderer fVectorCmdSkiaRenderer{};
-    size_t fTotalVectorCmdSerializedSize{};
-    size_t fSkpBytesWritten{};
-    size_t fSvgBytesWritten{};
-    size_t fPngBytesWritten{};
-    ImZeroSkiaSetupUI fImZeroSkiaSetupUi{};
-    bool fFffiInterpreter{};
-    SkColor fBackgroundColor{};
-    bool fUseVectorCmd{};
+    SkPaint fFontPaint;
+    VectorCmdSkiaRenderer fVectorCmdSkiaRenderer;
+    size_t fTotalVectorCmdSerializedSize;
+    size_t fSkpBytesWritten;
+    size_t fSvgBytesWritten;
+    size_t fPngBytesWritten;
+    ImZeroSkiaSetupUI fImZeroSkiaSetupUi;
+    bool fFffiInterpreter;
+    SkColor fBackgroundColor;
+    bool fUseVectorCmd;
 };

skia/skia/vectorCmdSkiaRenderer.cpp

@@ -108,7 +108,7 @@ static SkColor convertColor(uint32_t col) {
         (col >> IM_COL32_B_SHIFT) & 0xff);
 #endif
 }
-VectorCmdSkiaRenderer::VectorCmdSkiaRenderer() : fVertexPaint(nullptr),fRenderMode(RenderModeE_Normal) {
+VectorCmdSkiaRenderer::VectorCmdSkiaRenderer() : fVertexPaint(nullptr),fRenderMode(RenderModeE_Normal), backdropFilter(nullptr) {
 #ifdef RENDER_MODE_BACKDROP_FILTER_ENABLED
     backdropFilter = SkImageFilters::Blur(8, 8, SkTileMode::kClamp, nullptr);
 #if 0