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Improve OpenGL Support 

This includes using a proper pixel format (instead of garbage value)
Creating a requested context version (with backwards compatibility)
This commit is contained in:
Grim Maple 2022-10-17 19:20:07 +03:00
parent 1056a96e7c
commit 4a1e62240a
1 changed files with 79 additions and 41 deletions
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64
src/dlangui/platforms/windows/winapp.d
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@ -65,6 +65,16 @@ private __gshared bool isInitialized = false;
__gshared HINSTANCE _hInstance;
__gshared int _cmdShow;
// TODO: Encapsulate this better
private string GetErrorMessage(DWORD error) @trusted
{
char[] err = new char[256];
err[0 .. $] = 0;
int chars = FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM, NULL, error,
MAKELANGID(LANG_ENGLISH, SUBLANG_DEFAULT), err.ptr, 255, NULL);
return cast(string) err[0 .. chars];
}
static if (ENABLE_OPENGL) {
// WGL stuff
@ -205,9 +215,12 @@ const uint CUSTOM_MESSAGE_ID = WM_USER + 1;
static if (ENABLE_OPENGL) {
alias BOOL function(HDC hdc, const(int)* attributes, const(FLOAT)* fAttributes, UINT maxFormats, int* pixelFormat, UINT *numFormats) PFNWGLCHOOSEPIXELFORMATARBPROC;
alias PFNWGLCHOOSEPIXELFORMATARBPROC = extern(C) BOOL function(HDC hdc, const(int)* attributes, const(FLOAT)* fAttributes, UINT maxFormats, int* pixelFormat, UINT *numFormats);
PFNWGLCHOOSEPIXELFORMATARBPROC wglChoosePixelFormatARB;
alias PFNWGLCREATECONTEXTATTRIBSARBPROC = extern(C) HGLRC function(HDC hdc, HGLRC hShareContext, const int *attribList);
PFNWGLCREATECONTEXTATTRIBSARBPROC wglCreateContextAttribsARB;
/// Shared opengl context helper
struct SharedGLContext {
import bindbc.opengl;
@ -295,7 +308,7 @@ PFNWGLCHOOSEPIXELFORMATARBPROC wglChoosePixelFormatARB;
void bind(HDC hDC) {
if (!wglMakeCurrent(hDC, _hGLRC)) {
import std.string : format;
Log.e("wglMakeCurrent is failed. GetLastError=%x".format(GetLastError()));
Log.e("wglMakeCurrent is failed. ", GetErrorMessage(GetLastError()));
}
}
/// make null context current for DC
@ -309,7 +322,6 @@ PFNWGLCHOOSEPIXELFORMATARBPROC wglChoosePixelFormatARB;
int multisampleFormat(HDC hdc, int samples)
{
bind(hdc);
GLint pixelFormat;
BOOL valid;
GLuint numFormats;
@ -323,24 +335,44 @@ PFNWGLCHOOSEPIXELFORMATARBPROC wglChoosePixelFormatARB;
WGL_ACCELERATION_ARB, WGL_FULL_ACCELERATION_ARB,
WGL_COLOR_BITS_ARB, 24,
WGL_ALPHA_BITS_ARB, 8,
WGL_DEPTH_BITS_ARB,16,
WGL_DEPTH_BITS_ARB, 24,
WGL_STENCIL_BITS_ARB, 0,
WGL_DOUBLE_BUFFER_ARB, GL_TRUE,
WGL_SAMPLE_BUFFERS_ARB, GL_TRUE,
WGL_SAMPLES_ARB, samples,
WGL_CONTEXT_MAJOR_VERSION_ARB, Platform.instance.GLVersionMajor,
WGL_CONTEXT_MINOR_VERSION_ARB, Platform.instance.GLVersionMinor,
WGL_CONTEXT_FLAGS_ARB, WGL_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB,
WGL_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB, WGL_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB,
WGL_SAMPLES_ARB, Platform.instance.multisamples,
0
];
valid = wglChoosePixelFormatARB(hdc, attribs.ptr, fattribs.ptr, 1, &pixelFormat, &numFormats);
if(!valid)
Log.e("wglMakeCurrent is failed. GetLastError=%x".format(GetLastError()));
{
Log.e("wglChoosePixelFormatARB failed. GetLastError=%x".format(GetLastError()));
return 0;
}
unbind(hdc);
return valid;
return pixelFormat;
}
bool createCoreRC(HDC hDC)
{
int[] attribs =
[
WGL_CONTEXT_MAJOR_VERSION_ARB, Platform.instance.GLVersionMajor,
WGL_CONTEXT_MINOR_VERSION_ARB, Platform.instance.GLVersionMinor,
WGL_CONTEXT_PROFILE_MASK_ARB, WGL_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB,
0
];
bind(hDC);
wglCreateContextAttribsARB = cast(PFNWGLCREATECONTEXTATTRIBSARBPROC)wglGetProcAddress("wglCreateContextAttribsARB");
HGLRC tmpRC = wglCreateContextAttribsARB(hDC, null, attribs.ptr);
if(!tmpRC)
return false;
wglMakeCurrent(hDC, null);
wglDeleteContext(_hGLRC);
_hGLRC = tmpRC;
wglMakeCurrent(hDC, tmpRC);
unbind(hDC);
return true;
}
}
@ -423,7 +455,6 @@ class Win32Window : Window {
if (openglEnabled) {
useOpengl = sharedGLContext.init(hDC);
}
if(platform.multisamples != 0)
{
@ -447,6 +478,13 @@ class Win32Window : Window {
hDC = GetDC(_hwnd);
useOpengl = sharedGLContext.reinit(hDC, platform.multisamples);
}
if(!sharedGLContext.createCoreRC(hDC))
{
Log.d("Unable to create Core OpenGL");
throw new Exception("Unable to create Core OpenGL");
}
}
}
sharedGLContext.initGLBindings(hDC);