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Feature/angle vulkan integration #33

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b96f87c
PATCH 2: Adicionar -ldl flag para dlopen/dlsym explícito
denarmkill46-coder Aug 22, 2026
61bf61d
PATCH 1: Modificar carregamento de EGL para ANGLE first (sem fallback)
denarmkill46-coder Aug 22, 2026
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6 changes: 3 additions & 3 deletions ltw/src/main/tinywrapper/Android.mk
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Original file line number Diff line number Diff line change
Expand Up @@ -163,8 +163,8 @@ LOCAL_SRC_FILES := glsl_optimizer/src/code/ir_print_glsl_visitor.cpp \
glsl_optimizer/src/mesa/main/errors.c \
glsl_optimizer/src/mesa/main/extensions_table.c \
glsl_optimizer/src/mesa/main/imports.c \
glsl_optimizer/src/mesa/program/symbol_table.c \
glsl_optimizer/src/mesa/program/prog_parameter.c \
glsl_optimizer/src/program/symbol_table.c \
glsl_optimizer/src/program/prog_parameter.c \
glsl_optimizer/src/compiler/glsl/gl_nir_link_uniform_initializers.c \
glsl_optimizer/src/compiler/glsl/gl_nir_lower_packed_varyings.c \
glsl_optimizer/src/compiler/glsl/gl_nir_opt_dead_builtin_varyings.c \
Expand Down Expand Up @@ -414,5 +414,5 @@ LOCAL_STATIC_LIBRARIES := glsl_optimizer
LOCAL_LDFLAGS := -ffunction-sections -fdata-sections -Wl,--version-script=$(LOCAL_PATH)/version.script
# Comment for debugging
LOCAL_LDFLAGS += -flto -Wl,--gc-sections
LOCAL_LDLIBS := -llog
LOCAL_LDLIBS := -llog -ldl
include $(BUILD_SHARED_LIBRARY)
28 changes: 21 additions & 7 deletions ltw/src/main/tinywrapper/proc.c
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Original file line number Diff line number Diff line change
Expand Up @@ -20,7 +20,7 @@ INTERNAL eglMustCastToProperFunctionPointerType (*host_eglGetProcAddress)(const
INTERNAL es3_functions_t es3_functions;

static void error_sysegl() {
printf("LTWInit: Failed to load system EGL: %s\n", dlerror());
printf("LTWInit: Failed to load EGL: %s\n", dlerror());
abort();
}

Expand All @@ -39,16 +39,30 @@ static void init_es3_proc() {
}

__attribute__((constructor, used)) void proc_init(){
// ANGLE-first strategy for Vulkan rendering
const char* angleEglPath = "libEGL_angle.so";
const char* systemEglPath = "libEGL.so";
const char* eglPath = getenv("LIBGL_EGL") != NULL ? getenv("LIBGL_EGL") : systemEglPath;
const char* eglPath = NULL;

// Priority 1: Environment override (testing only)
if(getenv("LIBGL_EGL") != NULL) {
eglPath = getenv("LIBGL_EGL");
printf("LTWInit: Using LIBGL_EGL override: %s\n", eglPath);
}
// Priority 2: ANGLE (LD_LIBRARY_PATH must be set by launcher)
else {
eglPath = angleEglPath;
}

int flags = RTLD_LAZY | RTLD_LOCAL;
void* eglHandle = dlopen(eglPath, flags);
if(eglHandle == NULL){
printf("LTWInit: failed loading custom libEGL, using default\n");
eglHandle = dlopen(systemEglPath, flags);
if(eglHandle == NULL)
error_sysegl();

if(eglHandle == NULL) {
printf("LTWInit: FATAL - Failed to load %s: %s\n", eglPath, dlerror());
printf("LTWInit: Ensure launcher called setLdLibraryPath(nativedir) before loading LTW\n");
error_sysegl();
}

host_eglGetProcAddress = dlsym(eglHandle, "eglGetProcAddress");
if(host_eglGetProcAddress == NULL) error_sysegl();
init_egl();
Expand Down