493 lines
16 KiB
C++
493 lines
16 KiB
C++
/*
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* Copyright 2011-2021 Branimir Karadzic. All rights reserved.
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* License: https://github.com/bkaradzic/bgfx#license-bsd-2-clause
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*/
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#include "bgfx_p.h"
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#if (BGFX_CONFIG_RENDERER_OPENGLES || BGFX_CONFIG_RENDERER_OPENGL)
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# include "renderer_gl.h"
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# if BGFX_USE_EGL
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# if BX_PLATFORM_RPI
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# include <X11/Xlib.h>
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# include <bcm_host.h>
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# endif // BX_PLATFORM_RPI
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namespace bgfx { namespace gl
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{
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#ifndef EGL_CONTEXT_FLAG_NO_ERROR_BIT_KHR
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# define EGL_CONTEXT_FLAG_NO_ERROR_BIT_KHR 0x00000008
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#endif // EGL_CONTEXT_FLAG_NO_ERROR_BIT_KHR
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#if BGFX_USE_GL_DYNAMIC_LIB
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typedef void (*EGLPROC)(void);
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typedef EGLBoolean (EGLAPIENTRY* PFNEGLCHOOSECONFIGPROC)(EGLDisplay dpy, const EGLint *attrib_list, EGLConfig *configs, EGLint config_size, EGLint *num_config);
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typedef EGLContext (EGLAPIENTRY* PFNEGLCREATECONTEXTPROC)(EGLDisplay dpy, EGLConfig config, EGLContext share_context, const EGLint *attrib_list);
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typedef EGLSurface (EGLAPIENTRY* PFNEGLCREATEWINDOWSURFACEPROC)(EGLDisplay dpy, EGLConfig config, EGLNativeWindowType win, const EGLint *attrib_list);
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typedef EGLint (EGLAPIENTRY* PFNEGLGETERRORPROC)(void);
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typedef EGLDisplay (EGLAPIENTRY* PFNEGLGETDISPLAYPROC)(EGLNativeDisplayType display_id);
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typedef EGLPROC (EGLAPIENTRY* PFNEGLGETPROCADDRESSPROC)(const char *procname);
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typedef EGLBoolean (EGLAPIENTRY* PFNEGLINITIALIZEPROC)(EGLDisplay dpy, EGLint *major, EGLint *minor);
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typedef EGLBoolean (EGLAPIENTRY* PFNEGLMAKECURRENTPROC)(EGLDisplay dpy, EGLSurface draw, EGLSurface read, EGLContext ctx);
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typedef EGLBoolean (EGLAPIENTRY* PFNEGLDESTROYCONTEXTPROC)(EGLDisplay dpy, EGLContext ctx);
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typedef EGLBoolean (EGLAPIENTRY* PFNEGLDESTROYSURFACEPROC)(EGLDisplay dpy, EGLSurface surface);
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typedef const char* (EGLAPIENTRY* PGNEGLQUERYSTRINGPROC)(EGLDisplay dpy, EGLint name);
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typedef EGLBoolean (EGLAPIENTRY* PFNEGLSWAPBUFFERSPROC)(EGLDisplay dpy, EGLSurface surface);
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typedef EGLBoolean (EGLAPIENTRY* PFNEGLSWAPINTERVALPROC)(EGLDisplay dpy, EGLint interval);
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typedef EGLBoolean (EGLAPIENTRY* PFNEGLTERMINATEPROC)(EGLDisplay dpy);
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#define EGL_IMPORT \
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EGL_IMPORT_FUNC(PFNEGLCHOOSECONFIGPROC, eglChooseConfig); \
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EGL_IMPORT_FUNC(PFNEGLCREATECONTEXTPROC, eglCreateContext); \
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EGL_IMPORT_FUNC(PFNEGLCREATEWINDOWSURFACEPROC, eglCreateWindowSurface); \
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EGL_IMPORT_FUNC(PFNEGLGETDISPLAYPROC, eglGetDisplay); \
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EGL_IMPORT_FUNC(PFNEGLGETERRORPROC, eglGetError); \
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EGL_IMPORT_FUNC(PFNEGLGETPROCADDRESSPROC, eglGetProcAddress); \
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EGL_IMPORT_FUNC(PFNEGLDESTROYCONTEXTPROC, eglDestroyContext); \
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EGL_IMPORT_FUNC(PFNEGLDESTROYSURFACEPROC, eglDestroySurface); \
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EGL_IMPORT_FUNC(PFNEGLINITIALIZEPROC, eglInitialize); \
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EGL_IMPORT_FUNC(PFNEGLMAKECURRENTPROC, eglMakeCurrent); \
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EGL_IMPORT_FUNC(PGNEGLQUERYSTRINGPROC, eglQueryString); \
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EGL_IMPORT_FUNC(PFNEGLSWAPBUFFERSPROC, eglSwapBuffers); \
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EGL_IMPORT_FUNC(PFNEGLSWAPINTERVALPROC, eglSwapInterval); \
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EGL_IMPORT_FUNC(PFNEGLTERMINATEPROC, eglTerminate);
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#define EGL_IMPORT_FUNC(_proto, _func) _proto _func
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EGL_IMPORT
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#undef EGL_IMPORT_FUNC
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void* eglOpen()
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{
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void* handle = bx::dlopen("libEGL." BX_DL_EXT);
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BGFX_FATAL(NULL != handle, Fatal::UnableToInitialize, "Failed to load libEGL dynamic library.");
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#define EGL_IMPORT_FUNC(_proto, _func) \
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_func = (_proto)bx::dlsym(handle, #_func); \
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BX_TRACE("%p " #_func, _func); \
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BGFX_FATAL(NULL != _func, Fatal::UnableToInitialize, "Failed get " #_func ".")
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EGL_IMPORT
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#undef EGL_IMPORT_FUNC
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return handle;
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}
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void eglClose(void* _handle)
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{
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bx::dlclose(_handle);
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#define EGL_IMPORT_FUNC(_proto, _func) _func = NULL
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EGL_IMPORT
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#undef EGL_IMPORT_FUNC
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}
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#else
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void* eglOpen()
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{
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return NULL;
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}
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void eglClose(void* /*_handle*/)
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{
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}
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#endif // BGFX_USE_GL_DYNAMIC_LIB
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# define GL_IMPORT(_optional, _proto, _func, _import) _proto _func = NULL
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# include "glimports.h"
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static EGLint s_contextAttrs[16];
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struct SwapChainGL
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{
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SwapChainGL(EGLDisplay _display, EGLConfig _config, EGLContext _context, EGLNativeWindowType _nwh)
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: m_nwh(_nwh)
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, m_display(_display)
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{
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EGLSurface defaultSurface = eglGetCurrentSurface(EGL_DRAW);
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m_surface = eglCreateWindowSurface(m_display, _config, _nwh, NULL);
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BGFX_FATAL(m_surface != EGL_NO_SURFACE, Fatal::UnableToInitialize, "Failed to create surface.");
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m_context = eglCreateContext(m_display, _config, _context, s_contextAttrs);
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BX_ASSERT(NULL != m_context, "Create swap chain failed: %x", eglGetError() );
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makeCurrent();
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GL_CHECK(glClearColor(0.0f, 0.0f, 0.0f, 0.0f) );
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GL_CHECK(glClear(GL_COLOR_BUFFER_BIT) );
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swapBuffers();
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GL_CHECK(glClear(GL_COLOR_BUFFER_BIT) );
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swapBuffers();
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eglMakeCurrent(m_display, defaultSurface, defaultSurface, _context);
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}
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~SwapChainGL()
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{
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EGLSurface defaultSurface = eglGetCurrentSurface(EGL_DRAW);
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EGLContext defaultContext = eglGetCurrentContext();
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eglMakeCurrent(m_display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
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eglDestroyContext(m_display, m_context);
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eglDestroySurface(m_display, m_surface);
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eglMakeCurrent(m_display, defaultSurface, defaultSurface, defaultContext);
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}
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void makeCurrent()
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{
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eglMakeCurrent(m_display, m_surface, m_surface, m_context);
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}
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void swapBuffers()
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{
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eglSwapBuffers(m_display, m_surface);
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}
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EGLNativeWindowType m_nwh;
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EGLContext m_context;
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EGLDisplay m_display;
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EGLSurface m_surface;
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};
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# if BX_PLATFORM_RPI
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static EGL_DISPMANX_WINDOW_T s_dispmanWindow;
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# endif // BX_PLATFORM_RPI
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void GlContext::create(uint32_t _width, uint32_t _height)
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{
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# if BX_PLATFORM_RPI
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bcm_host_init();
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# endif // BX_PLATFORM_RPI
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m_eglLibrary = eglOpen();
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if (NULL == g_platformData.context)
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{
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# if BX_PLATFORM_RPI
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g_platformData.ndt = EGL_DEFAULT_DISPLAY;
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# endif // BX_PLATFORM_RPI
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BX_UNUSED(_width, _height);
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EGLNativeDisplayType ndt = (EGLNativeDisplayType)g_platformData.ndt;
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EGLNativeWindowType nwh = (EGLNativeWindowType )g_platformData.nwh;
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# if BX_PLATFORM_WINDOWS
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if (NULL == g_platformData.ndt)
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{
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ndt = GetDC( (HWND)g_platformData.nwh);
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}
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# endif // BX_PLATFORM_WINDOWS
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m_display = eglGetDisplay(ndt);
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BGFX_FATAL(m_display != EGL_NO_DISPLAY, Fatal::UnableToInitialize, "Failed to create display %p", m_display);
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EGLint major = 0;
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EGLint minor = 0;
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EGLBoolean success = eglInitialize(m_display, &major, &minor);
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BGFX_FATAL(success && major >= 1 && minor >= 3, Fatal::UnableToInitialize, "Failed to initialize %d.%d", major, minor);
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BX_TRACE("EGL info:");
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const char* clientApis = eglQueryString(m_display, EGL_CLIENT_APIS);
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BX_TRACE(" APIs: %s", clientApis); BX_UNUSED(clientApis);
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const char* vendor = eglQueryString(m_display, EGL_VENDOR);
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BX_TRACE(" Vendor: %s", vendor); BX_UNUSED(vendor);
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const char* version = eglQueryString(m_display, EGL_VERSION);
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BX_TRACE("Version: %s", version); BX_UNUSED(version);
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const char* extensions = eglQueryString(m_display, EGL_EXTENSIONS);
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BX_TRACE("Supported EGL extensions:");
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dumpExtensions(extensions);
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// https://www.khronos.org/registry/EGL/extensions/ANDROID/EGL_ANDROID_recordable.txt
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const bool hasEglAndroidRecordable = !bx::findIdentifierMatch(extensions, "EGL_ANDROID_recordable").isEmpty();
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const uint32_t gles = BGFX_CONFIG_RENDERER_OPENGLES;
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EGLint attrs[] =
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{
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EGL_RENDERABLE_TYPE, (gles >= 30) ? EGL_OPENGL_ES3_BIT_KHR : EGL_OPENGL_ES2_BIT,
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EGL_BLUE_SIZE, 8,
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EGL_GREEN_SIZE, 8,
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EGL_RED_SIZE, 8,
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EGL_ALPHA_SIZE, 8,
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# if BX_PLATFORM_ANDROID
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EGL_DEPTH_SIZE, 16,
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# else
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EGL_DEPTH_SIZE, 24,
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# endif // BX_PLATFORM_
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EGL_STENCIL_SIZE, 8,
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// Android Recordable surface
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hasEglAndroidRecordable ? 0x3142 : EGL_NONE,
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hasEglAndroidRecordable ? 1 : EGL_NONE,
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EGL_NONE
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};
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EGLint numConfig = 0;
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success = eglChooseConfig(m_display, attrs, &m_config, 1, &numConfig);
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BGFX_FATAL(success, Fatal::UnableToInitialize, "eglChooseConfig");
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# if BX_PLATFORM_ANDROID
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EGLint format;
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eglGetConfigAttrib(m_display, m_config, EGL_NATIVE_VISUAL_ID, &format);
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ANativeWindow_setBuffersGeometry( (ANativeWindow*)g_platformData.nwh, _width, _height, format);
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# elif BX_PLATFORM_RPI
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DISPMANX_DISPLAY_HANDLE_T dispmanDisplay = vc_dispmanx_display_open(0);
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DISPMANX_UPDATE_HANDLE_T dispmanUpdate = vc_dispmanx_update_start(0);
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VC_RECT_T dstRect = { 0, 0, int32_t(_width), int32_t(_height) };
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VC_RECT_T srcRect = { 0, 0, int32_t(_width) << 16, int32_t(_height) << 16 };
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DISPMANX_ELEMENT_HANDLE_T dispmanElement = vc_dispmanx_element_add(dispmanUpdate
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, dispmanDisplay
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, 0
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, &dstRect
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, 0
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, &srcRect
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, DISPMANX_PROTECTION_NONE
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, NULL
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, NULL
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, DISPMANX_NO_ROTATE
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);
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s_dispmanWindow.element = dispmanElement;
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s_dispmanWindow.width = _width;
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s_dispmanWindow.height = _height;
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nwh = &s_dispmanWindow;
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vc_dispmanx_update_submit_sync(dispmanUpdate);
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# endif // BX_PLATFORM_ANDROID
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m_surface = eglCreateWindowSurface(m_display, m_config, nwh, NULL);
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BGFX_FATAL(m_surface != EGL_NO_SURFACE, Fatal::UnableToInitialize, "Failed to create surface.");
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const bool hasEglKhrCreateContext = !bx::findIdentifierMatch(extensions, "EGL_KHR_create_context").isEmpty();
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const bool hasEglKhrNoError = !bx::findIdentifierMatch(extensions, "EGL_KHR_create_context_no_error").isEmpty();
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for (uint32_t ii = 0; ii < 2; ++ii)
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{
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bx::StaticMemoryBlockWriter writer(s_contextAttrs, sizeof(s_contextAttrs) );
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EGLint flags = 0;
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# if BX_PLATFORM_RPI
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BX_UNUSED(hasEglKhrCreateContext, hasEglKhrNoError);
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# else
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if (hasEglKhrCreateContext)
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{
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bx::write(&writer, EGLint(EGL_CONTEXT_MAJOR_VERSION_KHR), bx::ErrorAssert{} );
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bx::write(&writer, EGLint(gles / 10), bx::ErrorAssert{} );
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bx::write(&writer, EGLint(EGL_CONTEXT_MINOR_VERSION_KHR), bx::ErrorAssert{} );
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bx::write(&writer, EGLint(gles % 10), bx::ErrorAssert{} );
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flags |= BGFX_CONFIG_DEBUG && hasEglKhrNoError ? 0
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| EGL_CONTEXT_FLAG_NO_ERROR_BIT_KHR
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: 0
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;
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if (0 == ii)
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{
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flags |= BGFX_CONFIG_DEBUG ? 0
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| EGL_CONTEXT_OPENGL_DEBUG_BIT_KHR
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// | EGL_OPENGL_ES3_BIT_KHR
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: 0
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;
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bx::write(&writer, EGLint(EGL_CONTEXT_FLAGS_KHR), bx::ErrorAssert{} );
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bx::write(&writer, flags, bx::ErrorAssert{});
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}
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}
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else
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# endif // BX_PLATFORM_RPI
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{
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bx::write(&writer, EGLint(EGL_CONTEXT_CLIENT_VERSION), bx::ErrorAssert{} );
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bx::write(&writer, EGLint(gles / 10), bx::ErrorAssert{} );
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}
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bx::write(&writer, EGLint(EGL_NONE), bx::ErrorAssert{} );
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m_context = eglCreateContext(m_display, m_config, EGL_NO_CONTEXT, s_contextAttrs);
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if (NULL != m_context)
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{
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break;
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}
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BX_TRACE("Failed to create EGL context with EGL_CONTEXT_FLAGS_KHR (%08x).", flags);
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}
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BGFX_FATAL(m_context != EGL_NO_CONTEXT, Fatal::UnableToInitialize, "Failed to create context.");
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success = eglMakeCurrent(m_display, m_surface, m_surface, m_context);
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BGFX_FATAL(success, Fatal::UnableToInitialize, "Failed to set context.");
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m_current = NULL;
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eglSwapInterval(m_display, 0);
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}
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import();
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g_internalData.context = m_context;
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}
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void GlContext::destroy()
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{
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if (NULL != m_display)
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{
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eglMakeCurrent(m_display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
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eglDestroyContext(m_display, m_context);
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eglDestroySurface(m_display, m_surface);
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eglTerminate(m_display);
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m_context = NULL;
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}
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eglClose(m_eglLibrary);
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# if BX_PLATFORM_RPI
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bcm_host_deinit();
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# endif // BX_PLATFORM_RPI
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}
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void GlContext::resize(uint32_t _width, uint32_t _height, uint32_t _flags)
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{
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# if BX_PLATFORM_ANDROID
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if (NULL != m_display)
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{
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EGLNativeWindowType nwh = (EGLNativeWindowType )g_platformData.nwh;
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eglMakeCurrent(m_display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
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eglDestroySurface(m_display, m_surface);
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m_surface = eglCreateWindowSurface(m_display, m_config, nwh, NULL);
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BGFX_FATAL(m_surface != EGL_NO_SURFACE, Fatal::UnableToInitialize, "Failed to create surface.");
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EGLBoolean success = eglMakeCurrent(m_display, m_surface, m_surface, m_context);
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BGFX_FATAL(success, Fatal::UnableToInitialize, "Failed to set context.");
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EGLint format;
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eglGetConfigAttrib(m_display, m_config, EGL_NATIVE_VISUAL_ID, &format);
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ANativeWindow_setBuffersGeometry( (ANativeWindow*)g_platformData.nwh, _width, _height, format);
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}
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# elif BX_PLATFORM_EMSCRIPTEN
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EMSCRIPTEN_CHECK(emscripten_set_canvas_element_size(HTML5_TARGET_CANVAS_SELECTOR, _width, _height) );
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# else
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BX_UNUSED(_width, _height);
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# endif // BX_PLATFORM_*
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if (NULL != m_display)
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{
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bool vsync = !!(_flags&BGFX_RESET_VSYNC);
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eglSwapInterval(m_display, vsync ? 1 : 0);
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}
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}
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uint64_t GlContext::getCaps() const
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{
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return BX_ENABLED(0
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| BX_PLATFORM_LINUX
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| BX_PLATFORM_WINDOWS
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| BX_PLATFORM_ANDROID
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)
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? BGFX_CAPS_SWAP_CHAIN
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: 0
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;
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}
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SwapChainGL* GlContext::createSwapChain(void* _nwh)
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{
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return BX_NEW(g_allocator, SwapChainGL)(m_display, m_config, m_context, (EGLNativeWindowType)_nwh);
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}
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void GlContext::destroySwapChain(SwapChainGL* _swapChain)
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{
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BX_DELETE(g_allocator, _swapChain);
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}
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void GlContext::swap(SwapChainGL* _swapChain)
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{
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makeCurrent(_swapChain);
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if (NULL == _swapChain)
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{
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if (NULL != m_display)
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{
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eglSwapBuffers(m_display, m_surface);
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}
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}
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else
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{
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_swapChain->swapBuffers();
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}
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}
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void GlContext::makeCurrent(SwapChainGL* _swapChain)
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{
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if (m_current != _swapChain)
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{
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m_current = _swapChain;
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if (NULL == _swapChain)
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{
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if (NULL != m_display)
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{
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eglMakeCurrent(m_display, m_surface, m_surface, m_context);
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}
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}
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else
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{
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_swapChain->makeCurrent();
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}
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}
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}
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void GlContext::import()
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{
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BX_TRACE("Import:");
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# if BX_PLATFORM_WINDOWS || BX_PLATFORM_LINUX
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void* glesv2 = bx::dlopen("libGLESv2." BX_DL_EXT);
|
|
|
|
# define GL_EXTENSION(_optional, _proto, _func, _import) \
|
|
{ \
|
|
if (NULL == _func) \
|
|
{ \
|
|
_func = bx::dlsym<_proto>(glesv2, #_import); \
|
|
BX_TRACE("\t%p " #_func " (" #_import ")", _func); \
|
|
BGFX_FATAL(_optional || NULL != _func \
|
|
, Fatal::UnableToInitialize \
|
|
, "Failed to create OpenGLES context. eglGetProcAddress(\"%s\")" \
|
|
, #_import); \
|
|
} \
|
|
}
|
|
# else
|
|
# define GL_EXTENSION(_optional, _proto, _func, _import) \
|
|
{ \
|
|
if (NULL == _func) \
|
|
{ \
|
|
_func = reinterpret_cast<_proto>(eglGetProcAddress(#_import) ); \
|
|
BX_TRACE("\t%p " #_func " (" #_import ")", _func); \
|
|
BGFX_FATAL(_optional || NULL != _func \
|
|
, Fatal::UnableToInitialize \
|
|
, "Failed to create OpenGLES context. eglGetProcAddress(\"%s\")" \
|
|
, #_import); \
|
|
} \
|
|
}
|
|
|
|
# endif // BX_PLATFORM_
|
|
|
|
# include "glimports.h"
|
|
|
|
# undef GL_EXTENSION
|
|
}
|
|
|
|
} /* namespace gl */ } // namespace bgfx
|
|
|
|
# endif // BGFX_USE_EGL
|
|
#endif // (BGFX_CONFIG_RENDERER_OPENGLES || BGFX_CONFIG_RENDERER_OPENGL)
|