initial commit
This commit is contained in:
Maciej Samborski
commit
fe12584aae
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|
@ -0,0 +1,13 @@
|
|||
FLAGS=-fPIC --shared
|
||||
LIBS=-lX11 -lGL
|
||||
FILES=src/openwindow.c deps/lib/glad.a
|
||||
|
||||
libopenwindow.so: glad.a
|
||||
gcc ${FLAGS} -o libopenwindow.so ${FILES}
|
||||
|
||||
GLAD_FLAGS=-fPIC -c
|
||||
GLAD_FILES=deps/src/glad.c
|
||||
|
||||
glad.a: deps/src/glad.o
|
||||
gcc ${GLAD_FLAGS} -o deps/src/glad.o ${GLAD_FILES}
|
||||
ar rcs deps/lib/glad.a deps/src/glad.o
|
||||
|
|
@ -0,0 +1,311 @@
|
|||
#ifndef __khrplatform_h_
|
||||
#define __khrplatform_h_
|
||||
|
||||
/*
|
||||
** Copyright (c) 2008-2018 The Khronos Group Inc.
|
||||
**
|
||||
** Permission is hereby granted, free of charge, to any person obtaining a
|
||||
** copy of this software and/or associated documentation files (the
|
||||
** "Materials"), to deal in the Materials without restriction, including
|
||||
** without limitation the rights to use, copy, modify, merge, publish,
|
||||
** distribute, sublicense, and/or sell copies of the Materials, and to
|
||||
** permit persons to whom the Materials are furnished to do so, subject to
|
||||
** the following conditions:
|
||||
**
|
||||
** The above copyright notice and this permission notice shall be included
|
||||
** in all copies or substantial portions of the Materials.
|
||||
**
|
||||
** THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
||||
** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
||||
** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
|
||||
** IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
|
||||
** CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
|
||||
** TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
|
||||
** MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.
|
||||
*/
|
||||
|
||||
/* Khronos platform-specific types and definitions.
|
||||
*
|
||||
* The master copy of khrplatform.h is maintained in the Khronos EGL
|
||||
* Registry repository at https://github.com/KhronosGroup/EGL-Registry
|
||||
* The last semantic modification to khrplatform.h was at commit ID:
|
||||
* 67a3e0864c2d75ea5287b9f3d2eb74a745936692
|
||||
*
|
||||
* Adopters may modify this file to suit their platform. Adopters are
|
||||
* encouraged to submit platform specific modifications to the Khronos
|
||||
* group so that they can be included in future versions of this file.
|
||||
* Please submit changes by filing pull requests or issues on
|
||||
* the EGL Registry repository linked above.
|
||||
*
|
||||
*
|
||||
* See the Implementer's Guidelines for information about where this file
|
||||
* should be located on your system and for more details of its use:
|
||||
* http://www.khronos.org/registry/implementers_guide.pdf
|
||||
*
|
||||
* This file should be included as
|
||||
* #include <KHR/khrplatform.h>
|
||||
* by Khronos client API header files that use its types and defines.
|
||||
*
|
||||
* The types in khrplatform.h should only be used to define API-specific types.
|
||||
*
|
||||
* Types defined in khrplatform.h:
|
||||
* khronos_int8_t signed 8 bit
|
||||
* khronos_uint8_t unsigned 8 bit
|
||||
* khronos_int16_t signed 16 bit
|
||||
* khronos_uint16_t unsigned 16 bit
|
||||
* khronos_int32_t signed 32 bit
|
||||
* khronos_uint32_t unsigned 32 bit
|
||||
* khronos_int64_t signed 64 bit
|
||||
* khronos_uint64_t unsigned 64 bit
|
||||
* khronos_intptr_t signed same number of bits as a pointer
|
||||
* khronos_uintptr_t unsigned same number of bits as a pointer
|
||||
* khronos_ssize_t signed size
|
||||
* khronos_usize_t unsigned size
|
||||
* khronos_float_t signed 32 bit floating point
|
||||
* khronos_time_ns_t unsigned 64 bit time in nanoseconds
|
||||
* khronos_utime_nanoseconds_t unsigned time interval or absolute time in
|
||||
* nanoseconds
|
||||
* khronos_stime_nanoseconds_t signed time interval in nanoseconds
|
||||
* khronos_boolean_enum_t enumerated boolean type. This should
|
||||
* only be used as a base type when a client API's boolean type is
|
||||
* an enum. Client APIs which use an integer or other type for
|
||||
* booleans cannot use this as the base type for their boolean.
|
||||
*
|
||||
* Tokens defined in khrplatform.h:
|
||||
*
|
||||
* KHRONOS_FALSE, KHRONOS_TRUE Enumerated boolean false/true values.
|
||||
*
|
||||
* KHRONOS_SUPPORT_INT64 is 1 if 64 bit integers are supported; otherwise 0.
|
||||
* KHRONOS_SUPPORT_FLOAT is 1 if floats are supported; otherwise 0.
|
||||
*
|
||||
* Calling convention macros defined in this file:
|
||||
* KHRONOS_APICALL
|
||||
* KHRONOS_APIENTRY
|
||||
* KHRONOS_APIATTRIBUTES
|
||||
*
|
||||
* These may be used in function prototypes as:
|
||||
*
|
||||
* KHRONOS_APICALL void KHRONOS_APIENTRY funcname(
|
||||
* int arg1,
|
||||
* int arg2) KHRONOS_APIATTRIBUTES;
|
||||
*/
|
||||
|
||||
#if defined(__SCITECH_SNAP__) && !defined(KHRONOS_STATIC)
|
||||
# define KHRONOS_STATIC 1
|
||||
#endif
|
||||
|
||||
/*-------------------------------------------------------------------------
|
||||
* Definition of KHRONOS_APICALL
|
||||
*-------------------------------------------------------------------------
|
||||
* This precedes the return type of the function in the function prototype.
|
||||
*/
|
||||
#if defined(KHRONOS_STATIC)
|
||||
/* If the preprocessor constant KHRONOS_STATIC is defined, make the
|
||||
* header compatible with static linking. */
|
||||
# define KHRONOS_APICALL
|
||||
#elif defined(_WIN32)
|
||||
# define KHRONOS_APICALL __declspec(dllimport)
|
||||
#elif defined (__SYMBIAN32__)
|
||||
# define KHRONOS_APICALL IMPORT_C
|
||||
#elif defined(__ANDROID__)
|
||||
# define KHRONOS_APICALL __attribute__((visibility("default")))
|
||||
#else
|
||||
# define KHRONOS_APICALL
|
||||
#endif
|
||||
|
||||
/*-------------------------------------------------------------------------
|
||||
* Definition of KHRONOS_APIENTRY
|
||||
*-------------------------------------------------------------------------
|
||||
* This follows the return type of the function and precedes the function
|
||||
* name in the function prototype.
|
||||
*/
|
||||
#if defined(_WIN32) && !defined(_WIN32_WCE) && !defined(__SCITECH_SNAP__)
|
||||
/* Win32 but not WinCE */
|
||||
# define KHRONOS_APIENTRY __stdcall
|
||||
#else
|
||||
# define KHRONOS_APIENTRY
|
||||
#endif
|
||||
|
||||
/*-------------------------------------------------------------------------
|
||||
* Definition of KHRONOS_APIATTRIBUTES
|
||||
*-------------------------------------------------------------------------
|
||||
* This follows the closing parenthesis of the function prototype arguments.
|
||||
*/
|
||||
#if defined (__ARMCC_2__)
|
||||
#define KHRONOS_APIATTRIBUTES __softfp
|
||||
#else
|
||||
#define KHRONOS_APIATTRIBUTES
|
||||
#endif
|
||||
|
||||
/*-------------------------------------------------------------------------
|
||||
* basic type definitions
|
||||
*-----------------------------------------------------------------------*/
|
||||
#if (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) || defined(__GNUC__) || defined(__SCO__) || defined(__USLC__)
|
||||
|
||||
|
||||
/*
|
||||
* Using <stdint.h>
|
||||
*/
|
||||
#include <stdint.h>
|
||||
typedef int32_t khronos_int32_t;
|
||||
typedef uint32_t khronos_uint32_t;
|
||||
typedef int64_t khronos_int64_t;
|
||||
typedef uint64_t khronos_uint64_t;
|
||||
#define KHRONOS_SUPPORT_INT64 1
|
||||
#define KHRONOS_SUPPORT_FLOAT 1
|
||||
/*
|
||||
* To support platform where unsigned long cannot be used interchangeably with
|
||||
* inptr_t (e.g. CHERI-extended ISAs), we can use the stdint.h intptr_t.
|
||||
* Ideally, we could just use (u)intptr_t everywhere, but this could result in
|
||||
* ABI breakage if khronos_uintptr_t is changed from unsigned long to
|
||||
* unsigned long long or similar (this results in different C++ name mangling).
|
||||
* To avoid changes for existing platforms, we restrict usage of intptr_t to
|
||||
* platforms where the size of a pointer is larger than the size of long.
|
||||
*/
|
||||
#if defined(__SIZEOF_LONG__) && defined(__SIZEOF_POINTER__)
|
||||
#if __SIZEOF_POINTER__ > __SIZEOF_LONG__
|
||||
#define KHRONOS_USE_INTPTR_T
|
||||
#endif
|
||||
#endif
|
||||
|
||||
#elif defined(__VMS ) || defined(__sgi)
|
||||
|
||||
/*
|
||||
* Using <inttypes.h>
|
||||
*/
|
||||
#include <inttypes.h>
|
||||
typedef int32_t khronos_int32_t;
|
||||
typedef uint32_t khronos_uint32_t;
|
||||
typedef int64_t khronos_int64_t;
|
||||
typedef uint64_t khronos_uint64_t;
|
||||
#define KHRONOS_SUPPORT_INT64 1
|
||||
#define KHRONOS_SUPPORT_FLOAT 1
|
||||
|
||||
#elif defined(_WIN32) && !defined(__SCITECH_SNAP__)
|
||||
|
||||
/*
|
||||
* Win32
|
||||
*/
|
||||
typedef __int32 khronos_int32_t;
|
||||
typedef unsigned __int32 khronos_uint32_t;
|
||||
typedef __int64 khronos_int64_t;
|
||||
typedef unsigned __int64 khronos_uint64_t;
|
||||
#define KHRONOS_SUPPORT_INT64 1
|
||||
#define KHRONOS_SUPPORT_FLOAT 1
|
||||
|
||||
#elif defined(__sun__) || defined(__digital__)
|
||||
|
||||
/*
|
||||
* Sun or Digital
|
||||
*/
|
||||
typedef int khronos_int32_t;
|
||||
typedef unsigned int khronos_uint32_t;
|
||||
#if defined(__arch64__) || defined(_LP64)
|
||||
typedef long int khronos_int64_t;
|
||||
typedef unsigned long int khronos_uint64_t;
|
||||
#else
|
||||
typedef long long int khronos_int64_t;
|
||||
typedef unsigned long long int khronos_uint64_t;
|
||||
#endif /* __arch64__ */
|
||||
#define KHRONOS_SUPPORT_INT64 1
|
||||
#define KHRONOS_SUPPORT_FLOAT 1
|
||||
|
||||
#elif 0
|
||||
|
||||
/*
|
||||
* Hypothetical platform with no float or int64 support
|
||||
*/
|
||||
typedef int khronos_int32_t;
|
||||
typedef unsigned int khronos_uint32_t;
|
||||
#define KHRONOS_SUPPORT_INT64 0
|
||||
#define KHRONOS_SUPPORT_FLOAT 0
|
||||
|
||||
#else
|
||||
|
||||
/*
|
||||
* Generic fallback
|
||||
*/
|
||||
#include <stdint.h>
|
||||
typedef int32_t khronos_int32_t;
|
||||
typedef uint32_t khronos_uint32_t;
|
||||
typedef int64_t khronos_int64_t;
|
||||
typedef uint64_t khronos_uint64_t;
|
||||
#define KHRONOS_SUPPORT_INT64 1
|
||||
#define KHRONOS_SUPPORT_FLOAT 1
|
||||
|
||||
#endif
|
||||
|
||||
|
||||
/*
|
||||
* Types that are (so far) the same on all platforms
|
||||
*/
|
||||
typedef signed char khronos_int8_t;
|
||||
typedef unsigned char khronos_uint8_t;
|
||||
typedef signed short int khronos_int16_t;
|
||||
typedef unsigned short int khronos_uint16_t;
|
||||
|
||||
/*
|
||||
* Types that differ between LLP64 and LP64 architectures - in LLP64,
|
||||
* pointers are 64 bits, but 'long' is still 32 bits. Win64 appears
|
||||
* to be the only LLP64 architecture in current use.
|
||||
*/
|
||||
#ifdef KHRONOS_USE_INTPTR_T
|
||||
typedef intptr_t khronos_intptr_t;
|
||||
typedef uintptr_t khronos_uintptr_t;
|
||||
#elif defined(_WIN64)
|
||||
typedef signed long long int khronos_intptr_t;
|
||||
typedef unsigned long long int khronos_uintptr_t;
|
||||
#else
|
||||
typedef signed long int khronos_intptr_t;
|
||||
typedef unsigned long int khronos_uintptr_t;
|
||||
#endif
|
||||
|
||||
#if defined(_WIN64)
|
||||
typedef signed long long int khronos_ssize_t;
|
||||
typedef unsigned long long int khronos_usize_t;
|
||||
#else
|
||||
typedef signed long int khronos_ssize_t;
|
||||
typedef unsigned long int khronos_usize_t;
|
||||
#endif
|
||||
|
||||
#if KHRONOS_SUPPORT_FLOAT
|
||||
/*
|
||||
* Float type
|
||||
*/
|
||||
typedef float khronos_float_t;
|
||||
#endif
|
||||
|
||||
#if KHRONOS_SUPPORT_INT64
|
||||
/* Time types
|
||||
*
|
||||
* These types can be used to represent a time interval in nanoseconds or
|
||||
* an absolute Unadjusted System Time. Unadjusted System Time is the number
|
||||
* of nanoseconds since some arbitrary system event (e.g. since the last
|
||||
* time the system booted). The Unadjusted System Time is an unsigned
|
||||
* 64 bit value that wraps back to 0 every 584 years. Time intervals
|
||||
* may be either signed or unsigned.
|
||||
*/
|
||||
typedef khronos_uint64_t khronos_utime_nanoseconds_t;
|
||||
typedef khronos_int64_t khronos_stime_nanoseconds_t;
|
||||
#endif
|
||||
|
||||
/*
|
||||
* Dummy value used to pad enum types to 32 bits.
|
||||
*/
|
||||
#ifndef KHRONOS_MAX_ENUM
|
||||
#define KHRONOS_MAX_ENUM 0x7FFFFFFF
|
||||
#endif
|
||||
|
||||
/*
|
||||
* Enumerated boolean type
|
||||
*
|
||||
* Values other than zero should be considered to be true. Therefore
|
||||
* comparisons should not be made against KHRONOS_TRUE.
|
||||
*/
|
||||
typedef enum {
|
||||
KHRONOS_FALSE = 0,
|
||||
KHRONOS_TRUE = 1,
|
||||
KHRONOS_BOOLEAN_ENUM_FORCE_SIZE = KHRONOS_MAX_ENUM
|
||||
} khronos_boolean_enum_t;
|
||||
|
||||
#endif /* __khrplatform_h_ */
|
||||
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|
|
@ -0,0 +1,76 @@
|
|||
#include <stdio.h>
|
||||
#include <stdbool.h>
|
||||
|
||||
#ifndef _WIN32
|
||||
|
||||
#include <X11/keysym.h>
|
||||
|
||||
#define Window X11Window
|
||||
#include <X11/Xlib.h>
|
||||
#undef Window
|
||||
|
||||
#include "src/openwindow.h"
|
||||
|
||||
void xevent(Window * w, XEvent xev) {
|
||||
switch (xev.type)
|
||||
{
|
||||
case MotionNotify:
|
||||
printf("motion: %d %d\n", xev.xbutton.x, xev.xbutton.y);
|
||||
break;
|
||||
case KeyRelease:
|
||||
printf("release (%s)\n", XKeysymToString(XLookupKeysym(&xev.xkey, 0)));
|
||||
break;
|
||||
case KeyPress:
|
||||
if (XLookupKeysym(&xev.xkey, 0) == XK_Escape) w->close = true;
|
||||
printf("keypress (%s)\n", XKeysymToString(XLookupKeysym(&xev.xkey, 0)));
|
||||
break;
|
||||
case ButtonPress:
|
||||
printf("BPress: state = %d, button = %d, x = %d, y = %d\n", xev.xbutton.state, xev.xbutton.button, xev.xbutton.x, xev.xbutton.y);
|
||||
printf("Type=%d\n", (int)xev.xbutton.type);
|
||||
break;
|
||||
case ButtonRelease:
|
||||
printf("BRelease: state = %d, button = %d, x = %d, y = %d\n", xev.xbutton.state, xev.xbutton.button, xev.xbutton.x, xev.xbutton.y);
|
||||
printf("Type=%d\n", (int)xev.xbutton.type);
|
||||
break;
|
||||
default:
|
||||
printf("Unknown event!\n");
|
||||
}
|
||||
}
|
||||
|
||||
#endif // _WIN32
|
||||
|
||||
const char * fss =
|
||||
"#version 330 core\n"
|
||||
"precision mediump float;"
|
||||
"out vec4 FragColor;\n"
|
||||
"void main()\n"
|
||||
"{\n"
|
||||
" FragColor = vec4(0.0f, 1.0f, 0.0f, 1.0f);\n"
|
||||
"}";
|
||||
|
||||
int main(void)
|
||||
{
|
||||
Window w = openWindow("Window", 800, 600);
|
||||
|
||||
setWindowHandler(&w, xevent);
|
||||
|
||||
while (!w.close) {
|
||||
handleWindowEvents(&w);
|
||||
|
||||
glClearColor(1, 1, 1, 1);
|
||||
glClear(GL_COLOR_BUFFER_BIT);
|
||||
glColor3f(1.0f, 0.0f, 0.0f);
|
||||
glBegin(GL_TRIANGLES);
|
||||
glVertex2f(-0.5, -0.5);
|
||||
glVertex2f(0.5, -0.5);
|
||||
glVertex2f(0.0, 0.5);
|
||||
glEnd();
|
||||
glFlush();
|
||||
|
||||
glXSwapBuffers(w.x.display, w.x.window);
|
||||
}
|
||||
|
||||
destroyWindow(w);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
|
@ -0,0 +1,344 @@
|
|||
#include "openwindow.h"
|
||||
#include <stdio.h>
|
||||
|
||||
#ifndef _WIN32
|
||||
|
||||
#define GLLOADER glXGetProcAddress
|
||||
|
||||
typedef GLXContext (*glXCreateContextAttribsARBProc)(Display*, GLXFBConfig, GLXContext, Bool, const int*);
|
||||
|
||||
bool checkGLXVersion(Window window) {
|
||||
int glx_major, glx_minor;
|
||||
|
||||
if (!glXQueryVersion(window.x.display, &glx_major, &glx_minor)) {
|
||||
return false;
|
||||
}
|
||||
|
||||
return (glx_major == 1 && glx_minor >= 3) || ( glx_major > 1);
|
||||
}
|
||||
|
||||
GLXFBConfig getBestFBConfig(Window window, GLXFBConfig * configs, size_t count) {
|
||||
int best = 0, best_samp = -1;
|
||||
|
||||
for (size_t i = 0; i < count; ++i)
|
||||
{
|
||||
XVisualInfo * vi = glXGetVisualFromFBConfig(window.x.display, configs[i]);
|
||||
|
||||
if (!vi) continue;
|
||||
|
||||
int samp_buf, samples;
|
||||
|
||||
glXGetFBConfigAttrib(window.x.display, configs[i], GLX_SAMPLE_BUFFERS, &samp_buf);
|
||||
glXGetFBConfigAttrib(window.x.display, configs[i], GLX_SAMPLES , &samples);
|
||||
|
||||
if (samp_buf && samples > best_samp)
|
||||
best = i, best_samp = samples;
|
||||
|
||||
XFree(vi);
|
||||
}
|
||||
|
||||
return configs[best];
|
||||
}
|
||||
|
||||
int initGLX(Window * window)
|
||||
{
|
||||
if (!checkGLXVersion(*window))
|
||||
return -1;
|
||||
|
||||
int attribs[] = {
|
||||
GLX_X_RENDERABLE , True,
|
||||
GLX_DRAWABLE_TYPE , GLX_WINDOW_BIT,
|
||||
GLX_RENDER_TYPE , GLX_RGBA_BIT,
|
||||
GLX_X_VISUAL_TYPE , GLX_TRUE_COLOR,
|
||||
GLX_RED_SIZE , 8,
|
||||
GLX_GREEN_SIZE , 8,
|
||||
GLX_BLUE_SIZE , 8,
|
||||
GLX_ALPHA_SIZE , 8,
|
||||
GLX_DEPTH_SIZE , 24,
|
||||
GLX_STENCIL_SIZE , 8,
|
||||
GLX_DOUBLEBUFFER , True,
|
||||
//GLX_SAMPLE_BUFFERS , 1,
|
||||
//GLX_SAMPLES , 4,
|
||||
None
|
||||
};
|
||||
|
||||
int fbcount;
|
||||
GLXFBConfig * configs = glXChooseFBConfig(window->x.display, DefaultScreen(window->x.display), attribs, &fbcount);
|
||||
if (!configs || !fbcount) {
|
||||
fprintf(stderr, "Failed to retrieve a framebuffer config\n");
|
||||
return -1;
|
||||
}
|
||||
|
||||
window->glx.config = getBestFBConfig(*window, configs, fbcount);
|
||||
|
||||
XFree(configs);
|
||||
|
||||
glXCreateContextAttribsARBProc glXCreateContextAttribsARB = 0;
|
||||
glXCreateContextAttribsARB = (glXCreateContextAttribsARBProc)
|
||||
glXGetProcAddressARB( (const GLubyte *) "glXCreateContextAttribsARB" );
|
||||
int context_attribs[] = {
|
||||
GLX_CONTEXT_MAJOR_VERSION_ARB, 3,
|
||||
GLX_CONTEXT_MINOR_VERSION_ARB, 0,
|
||||
//GLX_CONTEXT_FLAGS_ARB , GLX_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB,
|
||||
None
|
||||
};
|
||||
window->glx.context = glXCreateContextAttribsARB(window->x.display, window->glx.config, 0, True, context_attribs);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int init(Window * window, const char * name, size_t width, size_t height) {
|
||||
window->x.display = XOpenDisplay(NULL);
|
||||
if (window->x.display == NULL) {
|
||||
fprintf(stderr, "Failed to open xdisplay!\n");
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (initGLX(window))
|
||||
return -1;
|
||||
|
||||
XVisualInfo * vi = glXGetVisualFromFBConfig(window->x.display, window->glx.config);
|
||||
|
||||
XSetWindowAttributes wa;
|
||||
|
||||
wa.border_pixel = 0;
|
||||
wa.colormap = window->x.cmap = XCreateColormap(window->x.display,
|
||||
RootWindow(window->x.display, vi->screen),
|
||||
vi->visual, AllocNone);
|
||||
|
||||
window->x.eventMask = wa.event_mask =
|
||||
StructureNotifyMask |
|
||||
ExposureMask |
|
||||
PointerMotionMask |
|
||||
KeyPressMask |
|
||||
KeyReleaseMask |
|
||||
ButtonPressMask |
|
||||
ButtonReleaseMask;
|
||||
|
||||
X11Window root = RootWindow(window->x.display, vi->screen);
|
||||
|
||||
window->x.window = XCreateWindow(
|
||||
window->x.display,
|
||||
root,
|
||||
0,
|
||||
0,
|
||||
width,
|
||||
height,
|
||||
0,
|
||||
vi->depth,
|
||||
InputOutput,
|
||||
vi->visual,
|
||||
CWBorderPixel|CWColormap|CWEventMask,
|
||||
&wa);
|
||||
|
||||
if (window->x.window == None) {
|
||||
fprintf(stderr, "Failed to create x11 window!\n");
|
||||
return -1;
|
||||
}
|
||||
|
||||
XFree(vi);
|
||||
|
||||
XMapWindow(window->x.display, window->x.window);
|
||||
XStoreName(window->x.display, window->x.window, name);
|
||||
|
||||
XSync(window->x.display, False);
|
||||
glXMakeCurrent(window->x.display, window->x.window, window->glx.context);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int initOpenGL() {
|
||||
if (getOpenGLProcs() == 0) return -1;
|
||||
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
|
||||
glEnable(GL_BLEND);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
Window openWindow(const char * name, size_t width, size_t height) {
|
||||
Window w = {0};
|
||||
|
||||
if (init(&w, name, width, height) < 0) {
|
||||
fprintf(stderr, "Failed to initialize window: X11 error!\n");
|
||||
exit(1);
|
||||
}
|
||||
|
||||
if (initOpenGL() < 0) {
|
||||
fprintf(stderr, "Failed to initialize window: GLAD/OPENGL error!\n");
|
||||
exit(1);
|
||||
}
|
||||
|
||||
return w;
|
||||
}
|
||||
|
||||
void setWindowHandler(Window * window, WindowEventHandler handler) {
|
||||
window->eventHandler = handler;
|
||||
}
|
||||
|
||||
void handleWindowEvents(Window * window) {
|
||||
if (window->eventHandler == NULL) {
|
||||
fprintf(stderr, "Window event handler is not defined. Use `setWindowHandler' to set it!\n");
|
||||
exit(1);
|
||||
}
|
||||
|
||||
XEvent xev;
|
||||
|
||||
if (XPending(window->x.display))
|
||||
if (XCheckWindowEvent(window->x.display, window->x.window, window->x.eventMask, &xev))
|
||||
window->eventHandler(window, xev);
|
||||
}
|
||||
|
||||
void destroyWindow(Window window) {
|
||||
glXMakeCurrent(window.x.display, None, None);
|
||||
glXDestroyContext(window.x.display, window.glx.context);
|
||||
|
||||
XFreeColormap(window.x.display, window.x.cmap);
|
||||
XDestroyWindow(window.x.display, window.x.window);
|
||||
XCloseDisplay(window.x.display);
|
||||
}
|
||||
|
||||
#else
|
||||
|
||||
#include <windows.h>
|
||||
|
||||
#define GLLOADER wglGetProcAddress
|
||||
|
||||
LRESULT CALLBACK wndProc(HWND hwnd, unsigned int msg, WPARAM wParam, LPARAM lParam)
|
||||
{
|
||||
Window * window = (Window *)GetWindowLong(hwnd, GWLP_USERDATA);
|
||||
|
||||
switch (msg)
|
||||
{
|
||||
case WM_CLOSE: {
|
||||
window->close = true;
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
|
||||
return (DefWindowProc(hwnd, msg, wParam, lParam));
|
||||
}
|
||||
|
||||
int initWWM(Window * window, const char * title, size_t width, size_t height) {
|
||||
HINSTANCE hInstance = GetModuleHandle(NULL);
|
||||
WNDCLASSEX wcex;
|
||||
|
||||
wcex.cbSize = sizeof(WNDCLASSEX);
|
||||
wcex.style = CS_OWNDC;
|
||||
wcex.lpfnWndProc = &DefWindowProc;
|
||||
wcex.cbClsExtra = 0;
|
||||
wcex.cbWndExtra = 0;
|
||||
wcex.hInstance = hInstance;
|
||||
wcex.hIcon = NULL;
|
||||
wcex.hCursor = LoadCursor(NULL, IDC_ARROW);
|
||||
wcex.hbrBackground = 0;
|
||||
wcex.lpszMenuName = NULL;
|
||||
wcex.lpszClassName = title;
|
||||
wcex.hIconSm = NULL;
|
||||
wcex.lpfnWndProc = wndProc;
|
||||
|
||||
RegisterClassEx(&wcex);
|
||||
RECT rect = { 0, 0, width, height };
|
||||
int style = WS_BORDER | WS_CAPTION | WS_SYSMENU | WS_THICKFRAME;
|
||||
AdjustWindowRect(&rect, style, FALSE);
|
||||
|
||||
window->w.window = CreateWindow(title, "example", style, CW_USEDEFAULT, CW_USEDEFAULT, rect.right - rect.left, rect.bottom - rect.top, NULL, NULL, GetModuleHandle(NULL), window);
|
||||
ShowWindow(window->w.window, SW_SHOW);
|
||||
|
||||
SetWindowLong(window->w.window, GWLP_USERDATA, (LONG)window);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int initEgl(Window * window)
|
||||
{
|
||||
EGLint attr[] = {
|
||||
EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
|
||||
EGL_RED_SIZE, 8,
|
||||
EGL_GREEN_SIZE, 8,
|
||||
EGL_BLUE_SIZE, 8,
|
||||
EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
|
||||
EGL_NONE
|
||||
};
|
||||
|
||||
EGLint num_config;
|
||||
EGLint major, minor;
|
||||
|
||||
EGLint ctxattr[] = {
|
||||
EGL_CONTEXT_CLIENT_VERSION, 2,
|
||||
EGL_NONE
|
||||
};
|
||||
|
||||
window->w.display = GetDC(window->w.window);
|
||||
|
||||
window->egl.display = eglGetDisplay((EGLNativeDisplayType) window->w.display);
|
||||
if (window->egl.display == EGL_NO_DISPLAY) {
|
||||
fprintf(stderr, "Error getting EGL display\n");
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (!eglInitialize(window->egl.display, &major, &minor )) {
|
||||
fprintf(stderr, "Error initializing EGL\n");
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* create EGL rendering context */
|
||||
int res = eglChooseConfig(window->egl.display, attr, &window->egl.config, 1, &num_config);
|
||||
if (res != EGL_TRUE) {
|
||||
fprintf(stderr, "Failed to choose config (eglError: %x)\n", res);
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (num_config != 1) {
|
||||
fprintf(stderr, "Couldn't choose config!\n");
|
||||
return -1;
|
||||
}
|
||||
|
||||
window->egl.surface = eglCreateWindowSurface(window->egl.display, window->egl.config, (EGLNativeWindowType) window->w.window, NULL);
|
||||
if (window->egl.surface == EGL_NO_SURFACE) {
|
||||
fprintf(stderr, "CreateWindowSurface, EGL eglError: %x\n", eglGetError());
|
||||
return -1;
|
||||
}
|
||||
|
||||
window->egl.context = eglCreateContext(window->egl.display, window->egl.config, EGL_NO_CONTEXT, ctxattr);
|
||||
if (window->egl.context == EGL_NO_CONTEXT) {
|
||||
fprintf(stderr, "CreateContext, EGL eglError: %d\n", eglGetError());
|
||||
return -1;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
void initOpenGL() {
|
||||
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
|
||||
glEnable(GL_BLEND);
|
||||
}
|
||||
|
||||
Window openWindow(const char * name, size_t width, size_t height) {
|
||||
Window w = {0};
|
||||
|
||||
if (initWWM(&w, name, width, height) < 0) {
|
||||
fprintf(stderr, "Failed to initialize egl!\n");
|
||||
exit(1);
|
||||
}
|
||||
|
||||
if (initEgl(&w) < 0) {
|
||||
fprintf(stderr, "Failed to initialize egl!\n");
|
||||
exit(1);
|
||||
}
|
||||
|
||||
initOpenGL();
|
||||
|
||||
eglMakeCurrent(w.egl.display, w.egl.surface, w.egl.surface, w.egl.context);
|
||||
|
||||
return w;
|
||||
}
|
||||
|
||||
void destroyWindow(Window window) {
|
||||
DestroyWindow(window.w.window);
|
||||
}
|
||||
|
||||
#endif // _WIN32
|
||||
|
||||
int getOpenGLProcs(void) {
|
||||
return gladLoadGLLoader((GLADloadproc)GLLOADER);
|
||||
}
|
||||
|
|
@ -0,0 +1,72 @@
|
|||
#ifndef _OPEN_WINDOW_H_
|
||||
#define _OPEN_WINDOW_H_
|
||||
|
||||
#include <stdbool.h>
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
|
||||
#include "../deps/include/glad/glad.h"
|
||||
|
||||
#ifndef _WIN32
|
||||
|
||||
#define Window X11Window
|
||||
#include <GL/glx.h>
|
||||
#include <X11/X.h>
|
||||
#include <X11/Xlib.h>
|
||||
#include <X11/Xutil.h>
|
||||
#undef Window
|
||||
|
||||
typedef struct {
|
||||
GLXFBConfig config;
|
||||
GLXContext context;
|
||||
} GLX;
|
||||
|
||||
typedef struct {
|
||||
Display * display;
|
||||
X11Window window;
|
||||
Colormap cmap;
|
||||
long eventMask;
|
||||
} X11;
|
||||
|
||||
typedef struct Window Window;
|
||||
typedef void(* WindowEventHandler)(Window * w, XEvent xev);
|
||||
|
||||
typedef struct Window {
|
||||
GLX glx;
|
||||
X11 x;
|
||||
WindowEventHandler eventHandler;
|
||||
bool close;
|
||||
} Window;
|
||||
|
||||
#else
|
||||
|
||||
typedef struct {
|
||||
} WGL;
|
||||
|
||||
typedef struct {
|
||||
HDC display;
|
||||
HWND window;
|
||||
} Windows;
|
||||
|
||||
typedef struct Window Window;
|
||||
|
||||
typedef struct Window {
|
||||
WGL wgl;
|
||||
Windows x;
|
||||
WindowEventHandler eventHandler;
|
||||
bool close;
|
||||
} Window;
|
||||
|
||||
#endif // _WIN32
|
||||
|
||||
// depends on glad
|
||||
int getOpenGLProcs(void);
|
||||
|
||||
Window openWindow(const char * name, size_t width, size_t height);
|
||||
void setWindowHandler(Window * window, WindowEventHandler handler);
|
||||
void handleWindowEvents(Window * window);
|
||||
void destroyWindow(Window w);
|
||||
|
||||
#endif // _OPEN_WINDOW_H_
|
||||
|
||||
// TODO: Add all the error handling to the glx
|
||||
Loading…
Reference in New Issue