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GLX: Added swap chain support.

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This commit is contained in:
Branimir Karadzic 2014-09-28 14:38:52 -07:00
parent 2850924e95
commit 9ba0956812
2 changed files with 63 additions and 20 deletions
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81
src/glcontext_glx.cpp
View file

@ -23,12 +23,40 @@ namespace bgfx
# include "glimports.h" # include "glimports.h"
static ::Display* s_display; static ::Display* s_display;
static ::Window s_window; static ::Window s_window;
struct SwapChainGL
{
SwapChainGL(::Window _window, XVisualInfo* _visualInfo, GLXContext _context)
: m_window(_window)
{
m_context = glXCreateContext(s_display, _visualInfo, _context, GL_TRUE);
}
~SwapChainGL()
{
glXMakeCurrent(s_display, 0, 0);
glXDestroyContext(s_display, m_context);
}
void makeCurrent()
{
glXMakeCurrent(s_display, m_window, m_context);
}
void swapBuffers()
{
glXSwapBuffers(s_display, m_window);
}
Window m_window;
GLXContext m_context;
};
void x11SetDisplayWindow(::Display* _display, ::Window _window) void x11SetDisplayWindow(::Display* _display, ::Window _window)
{ {
s_display = _display; s_display = _display;
s_window = _window; s_window = _window;
} }
void GlContext::create(uint32_t _width, uint32_t _height) void GlContext::create(uint32_t _width, uint32_t _height)
@ -74,11 +102,10 @@ namespace bgfx
BX_TRACE("glX num configs %d", numConfigs); BX_TRACE("glX num configs %d", numConfigs);
XVisualInfo* visualInfo = NULL;
for (int ii = 0; ii < numConfigs; ++ii) for (int ii = 0; ii < numConfigs; ++ii)
{ {
visualInfo = glXGetVisualFromFBConfig(s_display, configs[ii]); m_visualInfo = glXGetVisualFromFBConfig(s_display, configs[ii]);
if (NULL != visualInfo) if (NULL != m_visualInfo)
{ {
BX_TRACE("---"); BX_TRACE("---");
bool valid = true; bool valid = true;
@ -113,19 +140,17 @@ namespace bgfx
} }
} }
XFree(visualInfo); XFree(m_visualInfo);
visualInfo = NULL; m_visualInfo = NULL;
} }
XFree(configs); XFree(configs);
BGFX_FATAL(visualInfo, Fatal::UnableToInitialize, "Failed to find a suitable X11 display configuration."); BGFX_FATAL(m_visualInfo, Fatal::UnableToInitialize, "Failed to find a suitable X11 display configuration.");
BX_TRACE("Create GL 2.1 context."); BX_TRACE("Create GL 2.1 context.");
m_context = glXCreateContext(s_display, visualInfo, 0, GL_TRUE); m_context = glXCreateContext(s_display, m_visualInfo, 0, GL_TRUE);
BGFX_FATAL(NULL != m_context, Fatal::UnableToInitialize, "Failed to create GL 2.1 context."); BGFX_FATAL(NULL != m_context, Fatal::UnableToInitialize, "Failed to create GL 2.1 context.");
XFree(visualInfo);
#if BGFX_CONFIG_RENDERER_OPENGL >= 31 #if BGFX_CONFIG_RENDERER_OPENGL >= 31
glXCreateContextAttribsARB = (PFNGLXCREATECONTEXTATTRIBSARBPROC)glXGetProcAddress( (const GLubyte*)"glXCreateContextAttribsARB"); glXCreateContextAttribsARB = (PFNGLXCREATECONTEXTATTRIBSARBPROC)glXGetProcAddress( (const GLubyte*)"glXCreateContextAttribsARB");
@ -192,6 +217,7 @@ namespace bgfx
{ {
glXMakeCurrent(s_display, 0, 0); glXMakeCurrent(s_display, 0, 0);
glXDestroyContext(s_display, m_context); glXDestroyContext(s_display, m_context);
XFree(m_visualInfo);
} }
void GlContext::resize(uint32_t /*_width*/, uint32_t /*_height*/, bool _vsync) void GlContext::resize(uint32_t /*_width*/, uint32_t /*_height*/, bool _vsync)
@ -214,28 +240,43 @@ namespace bgfx
bool GlContext::isSwapChainSupported() bool GlContext::isSwapChainSupported()
{ {
return false; return true;
} }
SwapChainGL* GlContext::createSwapChain(void* /*_nwh*/) SwapChainGL* GlContext::createSwapChain(void* _nwh)
{ {
BX_CHECK(false, "Shouldn't be called!"); return BX_NEW(g_allocator, SwapChainGL)( (::Window)_nwh, m_visualInfo, m_context);
return NULL;
} }
void GlContext::destorySwapChain(SwapChainGL* /*_swapChain*/) void GlContext::destorySwapChain(SwapChainGL* _swapChain)
{ {
BX_CHECK(false, "Shouldn't be called!"); BX_DELETE(g_allocator, _swapChain);
} }
void GlContext::swap(SwapChainGL* _swapChain) void GlContext::swap(SwapChainGL* _swapChain)
{ {
BX_CHECK(NULL == _swapChain, "Shouldn't be called!"); BX_UNUSED(_swapChain); if (NULL == _swapChain)
glXSwapBuffers(s_display, s_window); {
glXMakeCurrent(s_display, s_window, m_context);
glXSwapBuffers(s_display, s_window);
}
else
{
_swapChain->makeCurrent();
_swapChain->swapBuffers();
}
} }
void GlContext::makeCurrent(SwapChainGL* /*_swapChain*/) void GlContext::makeCurrent(SwapChainGL* _swapChain)
{ {
if (NULL == _swapChain)
{
glXMakeCurrent(s_display, s_window, m_context);
}
else
{
_swapChain->makeCurrent();
}
} }
void GlContext::import() void GlContext::import()

2
src/glcontext_glx.h
View file

@ -19,6 +19,7 @@ namespace bgfx
{ {
GlContext() GlContext()
: m_context(0) : m_context(0)
, m_visualInfo(NULL)
{ {
} }
@ -40,6 +41,7 @@ namespace bgfx
} }
GLXContext m_context; GLXContext m_context;
XVisualInfo* m_visualInfo;
}; };
} // namespace bgfx } // namespace bgfx