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Added ability to configure backbuffer depth/stencil.

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This commit is contained in:
Бранимир Караџић
2025-10-28 15:49:09 -07:00
parent f7c4dd70f2
commit 959cab248e
26 changed files with 691 additions and 523 deletions
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42
src/glcontext_wgl.cpp
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@@ -63,19 +63,22 @@ namespace bgfx { namespace gl
HGLRC m_context;
};
static HGLRC createContext(HDC _hdc)
static HGLRC createContext(HDC _hdc, const Resolution& _resolution)
{
const bimg::ImageBlockInfo& colorBlockInfo = bimg::getBlockInfo(bimg::TextureFormat::Enum(_resolution.formatColor) );
const bimg::ImageBlockInfo& depthStecilBlockInfo = bimg::getBlockInfo(bimg::TextureFormat::Enum(_resolution.formatDepthStencil) );
PIXELFORMATDESCRIPTOR pfd;
bx::memSet(&pfd, 0, sizeof(pfd) );
pfd.nSize = sizeof(PIXELFORMATDESCRIPTOR);
pfd.nVersion = 1;
pfd.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER;
pfd.iPixelType = PFD_TYPE_RGBA;
pfd.cColorBits = 32;
pfd.cAlphaBits = 8;
pfd.cDepthBits = 24;
pfd.cStencilBits = 8;
pfd.iLayerType = PFD_MAIN_PLANE;
pfd.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER;
pfd.iPixelType = PFD_TYPE_RGBA;
pfd.cColorBits = colorBlockInfo.bitsPerPixel;
pfd.cAlphaBits = colorBlockInfo.aBits;
pfd.cDepthBits = depthStecilBlockInfo.depthBits;
pfd.cStencilBits = depthStecilBlockInfo.stencilBits;
pfd.iLayerType = PFD_MAIN_PLANE;
int pixelFormat = ChoosePixelFormat(_hdc, &pfd);
BGFX_FATAL(0 != pixelFormat, Fatal::UnableToInitialize, "ChoosePixelFormat failed!");
@@ -108,7 +111,7 @@ namespace bgfx { namespace gl
return context;
}
void GlContext::create(uint32_t /*_width*/, uint32_t /*_height*/, uint32_t /*_flags*/)
void GlContext::create(const Resolution& _resolution)
{
m_opengl32dll = bx::dlopen("opengl32.dll");
BGFX_FATAL(NULL != m_opengl32dll, Fatal::UnableToInitialize, "Failed to load opengl32.dll.");
@@ -174,7 +177,7 @@ namespace bgfx { namespace gl
HDC hdc = GetDC(hwnd);
BGFX_FATAL(NULL != hdc, Fatal::UnableToInitialize, "GetDC failed!");
HGLRC context = createContext(hdc);
HGLRC context = createContext(hdc, _resolution);
wglGetExtensionsStringARB = wglGetProc<PFNWGLGETEXTENSIONSSTRINGARBPROC >("wglGetExtensionsStringARB");
wglChoosePixelFormatARB = wglGetProc<PFNWGLCHOOSEPIXELFORMATARBPROC >("wglChoosePixelFormatARB");
@@ -191,6 +194,9 @@ namespace bgfx { namespace gl
if (NULL != wglChoosePixelFormatARB
&& NULL != wglCreateContextAttribsARB)
{
const bimg::ImageBlockInfo& colorBlockInfo = bimg::getBlockInfo(bimg::TextureFormat::Enum(_resolution.formatColor) );
const bimg::ImageBlockInfo& depthStecilBlockInfo = bimg::getBlockInfo(bimg::TextureFormat::Enum(_resolution.formatDepthStencil) );
int32_t attrs[] =
{
WGL_ACCELERATION_ARB, WGL_FULL_ACCELERATION_ARB,
@@ -198,10 +204,10 @@ namespace bgfx { namespace gl
WGL_DRAW_TO_WINDOW_ARB, GL_TRUE,
WGL_SUPPORT_OPENGL_ARB, GL_TRUE,
WGL_ALPHA_BITS_ARB, 8,
WGL_COLOR_BITS_ARB, 32,
WGL_DEPTH_BITS_ARB, 24,
WGL_STENCIL_BITS_ARB, 8,
WGL_ALPHA_BITS_ARB, colorBlockInfo.aBits,
WGL_COLOR_BITS_ARB, colorBlockInfo.bitsPerPixel,
WGL_DEPTH_BITS_ARB, depthStecilBlockInfo.depthBits,
WGL_STENCIL_BITS_ARB, depthStecilBlockInfo.stencilBits,
WGL_PIXEL_TYPE_ARB, WGL_TYPE_RGBA_ARB,
WGL_SAMPLES_ARB, 0,
@@ -282,7 +288,7 @@ namespace bgfx { namespace gl
if (NULL == m_context)
{
m_context = createContext(m_hdc);
m_context = createContext(m_hdc, _resolution);
}
int result = wglMakeCurrent(m_hdc, m_context);
@@ -321,11 +327,11 @@ namespace bgfx { namespace gl
m_opengl32dll = NULL;
}
void GlContext::resize(uint32_t /*_width*/, uint32_t /*_height*/, uint32_t _flags)
void GlContext::resize(const Resolution& _resolution)
{
if (NULL != wglSwapIntervalEXT)
{
bool vsync = !!(_flags&BGFX_RESET_VSYNC);
const bool vsync = !!(_resolution.reset & BGFX_RESET_VSYNC);
wglSwapIntervalEXT(vsync ? 1 : 0);
}
}
@@ -335,7 +341,7 @@ namespace bgfx { namespace gl
return BGFX_CAPS_SWAP_CHAIN;
}
SwapChainGL* GlContext::createSwapChain(void* _nwh, int _width, int _height)
SwapChainGL* GlContext::createSwapChain(void* _nwh, int32_t _width, int32_t _height)
{
BX_UNUSED(_width, _height);
SwapChainGL* swapChain = BX_NEW(g_allocator, SwapChainGL)(_nwh);