fixed bugs in windows context creation, which would result in some times

[miniglut] / miniglut.c

diff --git a/miniglut.c b/miniglut.c
index 6ea9b4e..e4a5150 100644 (file)
--- a/miniglut.c
+++ b/miniglut.c
@@ -1,6 +1,6 @@
 /*
 MiniGLUT - minimal GLUT subset without dependencies
-Copyright (C) 2020  John Tsiombikas <nuclear@member.fsf.org>
+Copyright (C) 2020-2022  John Tsiombikas <nuclear@member.fsf.org>
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
@@ -49,7 +49,7 @@ static int have_netwm_fullscr(void);
 #include <windows.h>
 #define BUILD_WIN32
 
-static HRESULT CALLBACK handle_message(HWND win, unsigned int msg, WPARAM wparam, LPARAM lparam);
+static LRESULT CALLBACK handle_message(HWND win, unsigned int msg, WPARAM wparam, LPARAM lparam);
 
 static HINSTANCE hinst;
 static HWND win;
@@ -1268,6 +1268,7 @@ void glutSetKeyRepeat(int repmode)
 }
 
 #define WGL_DRAW_TO_WINDOW     0x2001
+#define WGL_ACCELERATION       0x2003
 #define WGL_SUPPORT_OPENGL     0x2010
 #define WGL_DOUBLE_BUFFER      0x2011
 #define WGL_STEREO                     0x2012
@@ -1280,6 +1281,7 @@ void glutSetKeyRepeat(int repmode)
 #define WGL_ACCUM_BITS         0x201d
 #define WGL_DEPTH_BITS         0x2022
 #define WGL_STENCIL_BITS       0x2023
+#define WGL_FULL_ACCELERATION  0x2027
 
 #define WGL_TYPE_RGBA          0x202b
 #define WGL_TYPE_COLORINDEX    0x202c
@@ -1297,9 +1299,11 @@ static PROC wglGetPixelFormatAttribiv;
 static unsigned int choose_pixfmt(unsigned int mode)
 {
        unsigned int num_pixfmt, pixfmt = 0;
-       int attr[32] = { WGL_DRAW_TO_WINDOW, 1, WGL_SUPPORT_OPENGL, 1 };
+       int attr[32] = { WGL_DRAW_TO_WINDOW, 1, WGL_SUPPORT_OPENGL, 1,
+               WGL_ACCELERATION, WGL_FULL_ACCELERATION };
+       float fattr[2] = {0, 0};
 
-       int *aptr = attr;
+       int *aptr = attr + 6;
        int *samples = 0;
 
        if(mode & GLUT_DOUBLE) {
@@ -1334,7 +1338,7 @@ static unsigned int choose_pixfmt(unsigned int mode)
        }
        *aptr++ = 0;
 
-       while((!wglChoosePixelFormat(dc, attr, 0, 1, &pixfmt, &num_pixfmt) || !num_pixfmt) && samples && *samples) {
+       while((!wglChoosePixelFormat(dc, attr, fattr, 1, &pixfmt, &num_pixfmt) || !num_pixfmt) && samples && *samples) {
                *samples >>= 1;
                if(!*samples) {
                        aptr[-3] = 0;
@@ -1343,6 +1347,7 @@ static unsigned int choose_pixfmt(unsigned int mode)
        return pixfmt;
 }
 
+static PIXELFORMATDESCRIPTOR pfd;
 static PIXELFORMATDESCRIPTOR tmppfd = {
        sizeof tmppfd, 1, PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER,
        PFD_TYPE_RGBA, 32, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 24, 8, 0,
@@ -1418,7 +1423,7 @@ static int create_window_wglext(const char *title, int width, int height)
        if(!(pixfmt = choose_pixfmt(init_mode))) {
                panic("Failed to find suitable pixel format\n");
        }
-       if(!SetPixelFormat(dc, pixfmt, &tmppfd)) {
+       if(!SetPixelFormat(dc, pixfmt, &pfd)) {
                panic("Failed to set the selected pixel format\n");
        }
        if(!(ctx = wglCreateContext(dc))) {
@@ -1453,7 +1458,6 @@ fail:
 static void create_window(const char *title)
 {
        int pixfmt;
-       PIXELFORMATDESCRIPTOR pfd = {0};
        RECT rect;
        int width, height;
 
@@ -1465,6 +1469,30 @@ static void create_window(const char *title)
        width = rect.right - rect.left;
        height = rect.bottom - rect.top;
 
+       memset(&pfd, 0, sizeof pfd);
+       pfd.nSize = sizeof pfd;
+       pfd.nVersion = 1;
+       pfd.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER;
+       if(init_mode & GLUT_STEREO) {
+               pfd.dwFlags |= PFD_STEREO;
+       }
+       pfd.iPixelType = init_mode & GLUT_INDEX ? PFD_TYPE_COLORINDEX : PFD_TYPE_RGBA;
+       pfd.cColorBits = 24;
+       if(init_mode & GLUT_ALPHA) {
+               pfd.cAlphaBits = 8;
+       }
+       if(init_mode & GLUT_ACCUM) {
+               pfd.cAccumBits = 24;
+       }
+       if(init_mode & GLUT_DEPTH) {
+               pfd.cDepthBits = 24;
+       }
+       if(init_mode & GLUT_STENCIL) {
+               pfd.cStencilBits = 8;
+       }
+       pfd.iLayerType = PFD_MAIN_PLANE;
+
+
        if(create_window_wglext(title, width, height) == -1) {
 
                if(!(win = CreateWindow("MiniGLUT", title, WS_OVERLAPPEDWINDOW,
@@ -1473,28 +1501,6 @@ static void create_window(const char *title)
                }
                dc = GetDC(win);
 
-               pfd.nSize = sizeof pfd;
-               pfd.nVersion = 1;
-               pfd.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER;
-               if(init_mode & GLUT_STEREO) {
-                       pfd.dwFlags |= PFD_STEREO;
-               }
-               pfd.iPixelType = init_mode & GLUT_INDEX ? PFD_TYPE_COLORINDEX : PFD_TYPE_RGBA;
-               pfd.cColorBits = 24;
-               if(init_mode & GLUT_ALPHA) {
-                       pfd.cAlphaBits = 8;
-               }
-               if(init_mode & GLUT_ACCUM) {
-                       pfd.cAccumBits = 24;
-               }
-               if(init_mode & GLUT_DEPTH) {
-                       pfd.cDepthBits = 24;
-               }
-               if(init_mode & GLUT_STENCIL) {
-                       pfd.cStencilBits = 8;
-               }
-               pfd.iLayerType = PFD_MAIN_PLANE;
-
                if(!(pixfmt = ChoosePixelFormat(dc, &pfd))) {
                        panic("Failed to find suitable pixel format\n");
                }
@@ -1525,7 +1531,7 @@ static void create_window(const char *title)
        reshape_pending = 1;
 }
 
-static HRESULT CALLBACK handle_message(HWND win, unsigned int msg, WPARAM wparam, LPARAM lparam)
+static LRESULT CALLBACK handle_message(HWND win, unsigned int msg, WPARAM wparam, LPARAM lparam)
 {
        static int mouse_x, mouse_y;
        int x, y, key;
@@ -1764,7 +1770,9 @@ static void panic(const char *msg)
 
 #ifdef MINIGLUT_USE_LIBC
 #include <stdlib.h>
-#ifdef __unix__
+#ifdef _WIN32
+#include <io.h>
+#else
 #include <unistd.h>
 #endif