106 lines
2.0 KiB
C++
106 lines
2.0 KiB
C++
/*****************************************************************************\
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Snes9x - Portable Super Nintendo Entertainment System (TM) emulator.
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This file is licensed under the Snes9x License.
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For further information, consult the LICENSE file in the root directory.
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\*****************************************************************************/
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#include <cstdlib>
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#include <cstdio>
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#include "wgl_context.hpp"
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WGLContext::WGLContext()
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{
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hwnd = nullptr;
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hdc = nullptr;
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hglrc = nullptr;
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version_major = -1;
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version_minor = -1;
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}
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WGLContext::~WGLContext()
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{
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deinit();
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}
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void WGLContext::deinit()
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{
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if (wglMakeCurrent)
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wglMakeCurrent(nullptr, nullptr);
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if (hglrc)
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wglDeleteContext(hglrc);
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if (hdc)
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ReleaseDC(hwnd, hdc);
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}
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bool WGLContext::attach(HWND target)
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{
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hwnd = target;
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hdc = GetDC(hwnd);
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PIXELFORMATDESCRIPTOR pfd{};
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pfd.nSize = sizeof(PIXELFORMATDESCRIPTOR);
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pfd.nVersion = 1;
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pfd.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER;
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pfd.iPixelType = PFD_TYPE_RGBA;
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pfd.cColorBits = 32;
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pfd.cDepthBits = 16;
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pfd.iLayerType = PFD_MAIN_PLANE;
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auto pfdIndex = ChoosePixelFormat(hdc, &pfd);
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if (!pfdIndex)
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return false;
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if (!SetPixelFormat(hdc, pfdIndex, &pfd))
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{
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// Shouldn't happen
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}
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return true;
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}
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bool WGLContext::create_context()
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{
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hglrc = wglCreateContext(hdc);
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if (!hglrc)
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return false;
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if (!wglMakeCurrent(hdc, hglrc))
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return false;
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gladLoaderLoadWGL(hdc);
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resize();
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return true;
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}
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void WGLContext::resize()
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{
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RECT rect;
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GetClientRect(hwnd, &rect);
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this->width = rect.right - rect.left;
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this->height = rect.bottom - rect.top;
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make_current();
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}
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void WGLContext::swap_buffers()
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{
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SwapBuffers(hdc);
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}
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bool WGLContext::ready()
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{
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return true;
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}
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void WGLContext::make_current()
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{
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wglMakeCurrent(hdc, hglrc);
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}
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void WGLContext::swap_interval(int frames)
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{
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wglSwapIntervalEXT(frames);
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}
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