mirror of https://github.com/bkaradzic/bgfx
117 lines
3.2 KiB
C++
117 lines
3.2 KiB
C++
/*
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* Copyright 2011-2013 Branimir Karadzic. All rights reserved.
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* License: http://www.opensource.org/licenses/BSD-2-Clause
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*/
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#include "bgfx_p.h"
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#if (BGFX_CONFIG_RENDERER_OPENGLES2|BGFX_CONFIG_RENDERER_OPENGLES3|BGFX_CONFIG_RENDERER_OPENGL)
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# include "renderer_gl.h"
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# if BGFX_USE_EGL
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namespace bgfx
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{
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# define GL_IMPORT(_optional, _proto, _func) _proto _func
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# include "glimports.h"
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# undef GL_IMPORT
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void GlContext::create(uint32_t _width, uint32_t _height)
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{
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EGLNativeDisplayType ndt = EGL_DEFAULT_DISPLAY;
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EGLNativeWindowType nwt = (EGLNativeWindowType)NULL;
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# if BX_PLATFORM_WINDOWS
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ndt = GetDC(g_bgfxHwnd);
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nwt = g_bgfxHwnd;
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# endif // BX_PLATFORM_
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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 0x%08x", 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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EGLint attrs[] =
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{
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EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
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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_NONE
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};
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EGLint numConfig = 0;
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EGLConfig config;
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success = eglChooseConfig(m_display, attrs, &config, 1, &numConfig);
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BGFX_FATAL(success, Fatal::UnableToInitialize, "eglChooseConfig");
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m_surface = eglCreateWindowSurface(m_display, config, nwt, NULL);
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BGFX_FATAL(m_surface != EGL_NO_SURFACE, Fatal::UnableToInitialize, "Failed to create surface.");
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EGLint contextAttrs[] =
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{
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# if BGFX_CONFIG_RENDERER_OPENGLES2
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EGL_CONTEXT_CLIENT_VERSION, 2,
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# elif BGFX_CONFIG_RENDERER_OPENGLES3
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EGL_CONTEXT_CLIENT_VERSION, 3,
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# endif // BGFX_CONFIG_RENDERER_
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EGL_NONE
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};
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m_context = eglCreateContext(m_display, config, EGL_NO_CONTEXT, contextAttrs);
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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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# if BX_PLATFORM_EMSCRIPTEN
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emscripten_set_canvas_size(_width, _height);
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# endif // BX_PLATFORM_EMSCRIPTEN
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import();
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}
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void GlContext::destroy()
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{
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eglMakeCurrent(EGL_NO_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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void GlContext::resize(uint32_t _width, uint32_t _height)
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{
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}
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void GlContext::swap()
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{
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eglMakeCurrent(m_display, m_surface, m_surface, m_context);
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eglSwapBuffers(m_display, m_surface);
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}
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void GlContext::import()
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{
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# if !BX_PLATFORM_EMSCRIPTEN
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# define GL_IMPORT(_optional, _proto, _func) \
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{ \
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_func = (_proto)eglGetProcAddress(#_func); \
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BX_TRACE(#_func " 0x%08x", _func); \
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BGFX_FATAL(_optional || NULL != _func, Fatal::UnableToInitialize, "Failed to create OpenGLES context. eglGetProcAddress(\"%s\")", #_func); \
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}
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# include "glimports.h"
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# undef GL_IMPORT
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# endif // !BX_PLATFORM_EMSCRIPTEN
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}
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} // namespace bgfx
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# endif // BGFX_USE_EGL
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#endif // (BGFX_CONFIG_RENDERER_OPENGLES2|BGFX_CONFIG_RENDERER_OPENGLES3|BGFX_CONFIG_RENDERER_OPENGL)
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