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refactor WGLContext for easier legibility

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This commit is contained in:
Nick Fisher
2024-11-04 08:30:57 +08:00
parent 14b815e009
commit 73470fa504
1 changed files with 102 additions and 75 deletions
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177
thermion_flutter/thermion_flutter/windows/wgl_context.cpp
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@@ -8,14 +8,109 @@
namespace thermion_flutter {
// Add error checking function
void checkWGLError(const char* step, HDC hdc) {
DWORD error = GetLastError();
if (error != 0) {
std::cout << "WGL Error at " << step << ": " << error << std::endl;
}
// Check if the DC is still valid
if (!hdc || !wglGetCurrentDC()) {
std::cout << "Invalid DC at " << step << std::endl;
}
}
// Modified context creation with error checking
HGLRC createWGLContext(HDC whdc) {
std::cout << "creating wgl context on HDC" << whdc << std::endl;
PIXELFORMATDESCRIPTOR pfd = {
sizeof(PIXELFORMATDESCRIPTOR),
1,
PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER,
PFD_TYPE_RGBA,
32,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
32, // Depth buffer
8, // Stencil buffer - Added this
0,
PFD_MAIN_PLANE,
0, 0, 0, 0
};
// Choose pixel format
int pixelFormat = ChoosePixelFormat(whdc, &pfd);
if (pixelFormat == 0) {
checkWGLError("ChoosePixelFormat", whdc);
return nullptr;
}
// Set pixel format
if (!SetPixelFormat(whdc, pixelFormat, &pfd)) {
checkWGLError("SetPixelFormat", whdc);
return nullptr;
}
// Create temporary context
HGLRC tempContext = wglCreateContext(whdc);
if (!tempContext) {
checkWGLError("wglCreateContext", whdc);
return nullptr;
}
// Make temporary context current
if (!wglMakeCurrent(whdc, tempContext)) {
checkWGLError("wglMakeCurrent", whdc);
wglDeleteContext(tempContext);
return nullptr;
}
// Get modern context creation function
PFNWGLCREATECONTEXTATTRIBSARBPROC wglCreateContextAttribs =
(PFNWGLCREATECONTEXTATTRIBSARBPROC)wglGetProcAddress("wglCreateContextAttribsARB");
if (!wglCreateContextAttribs) {
std::cout << "Failed to get wglCreateContextAttribsARB" << std::endl;
wglMakeCurrent(NULL, NULL);
wglDeleteContext(tempContext);
return nullptr;
}
// Try creating modern context with different versions
HGLRC context = nullptr;
for (int minor = 5; minor >= 1; minor--) {
const int attribs[] = {
WGL_CONTEXT_MAJOR_VERSION_ARB, 4,
WGL_CONTEXT_MINOR_VERSION_ARB, minor, 0
};
context = wglCreateContextAttribs(whdc, nullptr, attribs);
if (context) break;
checkWGLError("wglCreateContextAttribs", whdc);
}
// Clean up temporary context
wglMakeCurrent(NULL, NULL);
wglDeleteContext(tempContext);
// Activate new context if created
if (context && !wglMakeCurrent(whdc, context)) {
checkWGLError("Final wglMakeCurrent", whdc);
wglDeleteContext(context);
std::cout << "Delete context" << std::endl;
return nullptr;
}
wglMakeCurrent(NULL, NULL);
return context;
}
WGLContext::WGLContext(flutter::PluginRegistrarWindows *pluginRegistrar,
flutter::TextureRegistrar *textureRegistrar)
: FlutterRenderContext(pluginRegistrar, textureRegistrar) {
#if WGL_USE_BACKING_WINDOW
#else
#if !WGL_USE_BACKING_WINDOW
auto hwnd = pluginRegistrar->GetView()->GetNativeWindow();
HDC whdc = GetDC(hwnd);
@@ -26,80 +121,12 @@ WGLContext::WGLContext(flutter::PluginRegistrarWindows *pluginRegistrar,
std::cout << "No GL context exists, creating" << std::endl;
PIXELFORMATDESCRIPTOR pfd = {
sizeof(PIXELFORMATDESCRIPTOR),
1,
PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER, // Flags
PFD_TYPE_RGBA, // The kind of framebuffer. RGBA or palette.
24, // Colordepth of the framebuffer.
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
24, // Number of bits for the depthbuffer
0, // Number of bits for the stencilbuffer
0, // Number of Aux buffers in the framebuffer.
PFD_MAIN_PLANE,
0,
0,
0,
0};
_context = createWGLContext(whdc);
int pixelFormat = ChoosePixelFormat(whdc, &pfd);
SetPixelFormat(whdc, pixelFormat, &pfd);
std::cout << "Created context " << _context << std::endl;
// We need a tmp context to retrieve and call wglCreateContextAttribsARB.
HGLRC tempContext = wglCreateContext(whdc);
if (!wglMakeCurrent(whdc, tempContext)) {
std::cout << "Failed to acquire temporary context" << std::endl;
return;
}
GLenum err = glGetError();
if (err != GL_NO_ERROR) {
std::cout << "GL Error @ 455 %d" << std::endl;
return;
}
PFNWGLCREATECONTEXTATTRIBSARBPROC wglCreateContextAttribs = nullptr;
wglCreateContextAttribs =
(PFNWGLCREATECONTEXTATTRIBSARBPROC)wglGetProcAddress(
"wglCreateContextAttribsARB");
if (!wglCreateContextAttribs) {
std::cout << "Failed to resolve wglCreateContextAttribsARB" << std::endl;
return;
}
for (int minor = 5; minor >= 1; minor--) {
std::vector<int> mAttribs = {WGL_CONTEXT_MAJOR_VERSION_ARB, 4,
WGL_CONTEXT_MINOR_VERSION_ARB, minor, 0};
_context = wglCreateContextAttribs(whdc, nullptr, mAttribs.data());
if (_context) {
break;
#endif
}
}
wglMakeCurrent(NULL, NULL);
wglDeleteContext(tempContext);
if (!_context || !wglMakeCurrent(whdc, _context)) {
std::cout << "Failed to create OpenGL context." << std::endl;
return;
}
#endif
}
void WGLContext::ResizeRenderingSurface(uint32_t width, uint32_t height, uint32_t left, uint32_t top) {
#if WGL_USE_BACKING_WINDOW