Add multisample support to WGL contexts

bzip2
Graham 5 years ago
parent 7b2ec0e4b0
commit 4797bf6224
  1. 161
      gl-natives/src/main/c/jaggl.c

@ -90,6 +90,8 @@ static GLXContext jaggl_context;
static GLXDrawable jaggl_drawable;
static bool jaggl_double_buffered;
#elif defined(_WIN32)
static HINSTANCE jaggl_instance;
static ATOM jaggl_class;
static HWND jaggl_window;
static HDC jaggl_device;
static HGLRC jaggl_context;
@ -146,10 +148,9 @@ static PFNGLUSEPROGRAMOBJECTARBPROC jaggl_glUseProgramObjectARB;
#if defined(__unix__)
static PFNGLXSWAPINTERVALSGIPROC jaggl_glXSwapIntervalSGI;
#elif defined(_WIN32)
static PFNWGLCHOOSEPIXELFORMATARBPROC jaggl_wglChoosePixelFormatARB;
static PFNWGLGETEXTENSIONSSTRINGEXTPROC jaggl_wglGetExtensionsStringEXT;
static PFNWGLSWAPINTERVALEXTPROC jaggl_wglSwapIntervalEXT;
#else
#error Unsupported platform
#endif
static void jaggl_init_proc_table(void) {
@ -201,6 +202,7 @@ static void jaggl_init_proc_table(void) {
#if defined(__unix__)
jaggl_glXSwapIntervalSGI = (PFNGLXSWAPINTERVALSGIPROC) JAGGL_PROC_ADDR("glXSwapIntervalSGI");
#elif defined(_WIN32)
jaggl_wglChoosePixelFormatARB = (PFNWGLCHOOSEPIXELFORMATARBPROC) JAGGL_PROC_ADDR("wglChoosePixelFormatARB");
jaggl_wglGetExtensionsStringEXT = (PFNWGLGETEXTENSIONSSTRINGEXTPROC) JAGGL_PROC_ADDR("wglGetExtensionsStringEXT");
jaggl_wglSwapIntervalEXT = (PFNWGLSWAPINTERVALEXTPROC) JAGGL_PROC_ADDR("wglSwapIntervalEXT");
#else
@ -208,6 +210,92 @@ static void jaggl_init_proc_table(void) {
#endif
}
#if defined(_WIN32)
BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved) {
if (fdwReason == DLL_PROCESS_ATTACH) {
jaggl_instance = hinstDLL;
}
return TRUE;
}
static void jaggl_bootstrap_proc_table(void) {
if (!jaggl_class) {
WNDCLASS c = {
.lpfnWndProc = DefWindowProc,
.hInstance = jaggl_instance,
.lpszClassName = "OpenRS2"
};
jaggl_class = RegisterClass(&c);
if (!jaggl_class) {
return;
}
}
HWND hwnd = CreateWindow(
MAKEINTATOM(jaggl_class),
"OpenRS2",
0,
0,
0,
1,
1,
NULL,
NULL,
jaggl_instance,
NULL
);
if (!hwnd) {
return;
}
HDC hdc = GetDC(hwnd);
if (!hdc) {
goto destroy_window;
}
PIXELFORMATDESCRIPTOR pfd = {
.nSize = sizeof(pfd),
.nVersion = 1,
.dwFlags = PFD_GENERIC_ACCELERATED | PFD_SUPPORT_OPENGL | PFD_DRAW_TO_WINDOW,
.iPixelType = PFD_TYPE_RGBA,
.cColorBits = 24,
.cRedBits = 8,
.cGreenBits = 8,
.cBlueBits = 8,
.cDepthBits = 24,
.iLayerType = PFD_MAIN_PLANE
};
int format = ChoosePixelFormat(hdc, &pfd);
if (!format) {
goto destroy_device;
}
if (!SetPixelFormat(hdc, format, &pfd)) {
goto destroy_device;
}
HGLRC context = wglCreateContext(hdc);
if (!context) {
goto destroy_device;
}
if (!wglMakeCurrent(hdc, context)) {
goto destroy_context;
}
jaggl_init_proc_table();
destroy_context:
wglMakeCurrent(hdc, NULL);
wglDeleteContext(context);
destroy_device:
ReleaseDC(hwnd, hdc);
destroy_window:
DestroyWindow(hwnd);
}
#endif
JNIEXPORT jboolean JNICALL Java_jaggl_context_createContext(JNIEnv *env, jclass cls) {
JAGGL_LOCK(env);
@ -497,12 +585,77 @@ JNIEXPORT jboolean JNICALL Java_jaggl_context_choosePixelFormat1(JNIEnv *env, jc
}
}
// TODO(gpe): numSamples handling
jaggl_bootstrap_proc_table();
if (jaggl_wglChoosePixelFormatARB) {
for (int i = 0; i < 2; i++) {
bool double_buffered = i == 0;
int attribs[] = {
WGL_SUPPORT_OPENGL_ARB,
GL_TRUE,
WGL_DRAW_TO_WINDOW_ARB,
GL_TRUE,
WGL_PIXEL_TYPE_ARB,
WGL_TYPE_RGBA_ARB,
WGL_COLOR_BITS_ARB,
24,
WGL_RED_BITS_ARB,
8,
WGL_GREEN_BITS_ARB,
8,
WGL_BLUE_BITS_ARB,
8,
WGL_ALPHA_BITS_ARB,
alpha_bits,
WGL_DEPTH_BITS_ARB,
24,
0, /* for WGL_DOUBLE_BUFFER_ARB */
0, /* for GL_TRUE */
0, /* for WGL_SAMPLE_BUFFERS_ARB */
0, /* for GL_TRUE */
0, /* for WGL_SAMPLES_ARB */
0, /* for num_samples */
0
};
int j = 18;
if (double_buffered) {
attribs[j++] = WGL_DOUBLE_BUFFER_ARB;
attribs[j++] = GL_TRUE;
}
if (num_samples) {
attribs[j++] = WGL_SAMPLE_BUFFERS_ARB;
attribs[j++] = GL_TRUE;
attribs[j++] = WGL_SAMPLES_ARB;
attribs[j++] = num_samples;
}
int format;
UINT num_formats;
if (!jaggl_wglChoosePixelFormatARB(jaggl_device, attribs, NULL, 1, &format, &num_formats)) {
continue;
}
PIXELFORMATDESCRIPTOR pfd;
if (!DescribePixelFormat(jaggl_device, format, sizeof(pfd), &pfd)) {
continue;
}
if (SetPixelFormat(jaggl_device, format, &pfd)) {
jaggl_alpha_bits = pfd.cAlphaBits;
result = JNI_TRUE;
goto dsi_free;
}
}
}
PIXELFORMATDESCRIPTOR pfd = {
.nSize = sizeof(pfd),
.nVersion = 1,
.dwFlags = PFD_GENERIC_ACCELERATED | PFD_SUPPORT_OPENGL | PFD_DRAW_TO_WINDOW | PFD_DOUBLEBUFFER,
.dwFlags = PFD_SUPPORT_OPENGL | PFD_DRAW_TO_WINDOW | PFD_DOUBLEBUFFER,
.iPixelType = PFD_TYPE_RGBA,
.cColorBits = 24,
.cRedBits = 8,

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