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9340c994b78d15253326b83cfcb15c7349c0403a
third_party_mesa3d/progs/wgl/sharedtex_mt/sharedtex_mt.c

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/*
* Test sharing of display lists and texture objects between GLX contests.
* Brian Paul
* Summer 2000
*
*
* Copyright (C) 2000 Brian Paul All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is 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 Software.
*
* THE SOFTWARE IS 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
* BRIAN PAUL 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 SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
*
* Modified 2009 for multithreading by Thomas Hellstrom.
*
* Port to windows by Michal Krol.
*/
#include <windows.h>
#include <GL/gl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#pragma comment(lib, "opengl32.lib")
struct thread_init_arg {
int id;
};
struct window {
CRITICAL_SECTION drawMutex;
HDC hDC;
HWND Win;
HGLRC Context;
float Angle;
int Id;
HGLRC sharedContext;
};
#define MAX_WINDOWS 20
static struct window Windows[MAX_WINDOWS];
static int NumWindows = 0;
static HANDLE terminate = NULL;
static HGLRC gCtx = NULL;
static HDC gHDC = NULL;
static GLuint Textures[3];
static void
Error(const char *msg)
{
fprintf(stderr, "Error - %s\n", msg);
exit(1);
}
static void
Resize(struct window *h, unsigned int width, unsigned int height);
static LRESULT CALLBACK
WndProc(HWND hWnd,
UINT uMsg,
WPARAM wParam,
LPARAM lParam )
{
switch (uMsg) {
case WM_KEYDOWN:
SetEvent(terminate);
break;
case WM_SIZE:
{
LONG index = GetWindowLong(hWnd, GWL_USERDATA);
if (index >= 0 && index < MAX_WINDOWS) {
RECT r;
GetClientRect(hWnd, &r);
Resize(&Windows[index], r.right, r.bottom);
}
}
break;
case WM_CREATE:
{
CREATESTRUCT *pcs = (CREATESTRUCT *) lParam;
SetWindowLong(hWnd, GWL_USERDATA, (LONG) pcs->lpCreateParams);
}
break;
case WM_DESTROY:
PostQuitMessage(0);
break;
default:
return DefWindowProc(hWnd, uMsg, wParam, lParam);
}
return 0;
}
static int
initMainthread(void)
{
WNDCLASS wc = {0};
HWND win;
PIXELFORMATDESCRIPTOR pfd = {0};
int visinfo;
wc.lpfnWndProc = WndProc;
wc.lpszClassName = "sharedtex_mt.hidden";
wc.style = CS_OWNDC | CS_HREDRAW | CS_VREDRAW;
RegisterClass(&wc);
win = CreateWindowEx(0,
wc.lpszClassName,
"sharedtex_mt.hidden",
WS_CLIPSIBLINGS | WS_CLIPCHILDREN,
CW_USEDEFAULT,
CW_USEDEFAULT,
CW_USEDEFAULT,
CW_USEDEFAULT,
NULL,
NULL,
wc.hInstance,
(LPVOID) -1);
if (!win) {
Error("Couldn't create window");
}
gHDC = GetDC(win);
if (!gHDC) {
Error("Couldn't obtain HDC");
}
pfd.cColorBits = 24;
pfd.cDepthBits = 24;
pfd.dwFlags = PFD_DOUBLEBUFFER | PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL;
pfd.iLayerType = PFD_MAIN_PLANE;
pfd.iPixelType = PFD_TYPE_RGBA;
pfd.nSize = sizeof(pfd);
pfd.nVersion = 1;
visinfo = ChoosePixelFormat(gHDC, &pfd);
if (!visinfo) {
Error("Unable to find RGB, Z, double-buffered visual");
}
SetPixelFormat(gHDC, visinfo, &pfd);
gCtx = wglCreateContext(gHDC);
if (!gCtx) {
Error("Couldn't create WGL context");
}
return 0;
}
static struct window *
AddWindow(int xpos, int ypos, HGLRC sCtx)
{
struct window *win = &Windows[NumWindows];
WNDCLASS wc = {0};
int width = 300, height = 300;
if (NumWindows >= MAX_WINDOWS)
return NULL;
memset(win, 0, sizeof(*win));
InitializeCriticalSection(&win->drawMutex);
win->Angle = 0.0;
win->Id = NumWindows++;
wc.hbrBackground = (HBRUSH) (COLOR_BTNFACE + 1);
wc.hCursor = LoadCursor(NULL, IDC_ARROW);
wc.hIcon = LoadIcon(NULL, IDI_APPLICATION);
wc.lpfnWndProc = WndProc;
wc.lpszClassName = "sharedtex_mt";
wc.style = CS_OWNDC | CS_HREDRAW | CS_VREDRAW;
RegisterClass(&wc);
win->Win = CreateWindowEx(0,
wc.lpszClassName,
"sharedtex_mt",
WS_SIZEBOX | WS_CLIPSIBLINGS | WS_CLIPCHILDREN,
xpos,
ypos,
width,
height,
NULL,
NULL,
wc.hInstance,
(LPVOID) win->Id);
if (!win->Win) {
Error("Couldn't create window");
}
win->sharedContext = sCtx;
ShowWindow(win->Win, SW_SHOW);
return win;
}
static void
InitGLstuff(void)
{
glGenTextures(3, Textures);
/* setup first texture object */
{
GLubyte image[16][16][4];
GLint i, j;
glBindTexture(GL_TEXTURE_2D, Textures[0]);
/* red/white checkerboard */
for (i = 0; i < 16; i++) {
for (j = 0; j < 16; j++) {
if ((i ^ j) & 1) {
image[i][j][0] = 255;
image[i][j][1] = 255;
image[i][j][2] = 255;
image[i][j][3] = 255;
}
else {
image[i][j][0] = 255;
image[i][j][1] = 0;
image[i][j][2] = 0;
image[i][j][3] = 255;
}
}
}
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 16, 16, 0, GL_RGBA,
GL_UNSIGNED_BYTE, image);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
}
/* setup second texture object */
{
GLubyte image[8][8][3];
GLint i, j;
glBindTexture(GL_TEXTURE_2D, Textures[1]);
/* green/yellow checkerboard */
for (i = 0; i < 8; i++) {
for (j = 0; j < 8; j++) {
if ((i ^ j) & 1) {
image[i][j][0] = 0;
image[i][j][1] = 255;
image[i][j][2] = 0;
}
else {
image[i][j][0] = 255;
image[i][j][1] = 255;
image[i][j][2] = 0;
}
}
}
glPixelStorei(GL_UNPACK_ALIGNMENT, 2);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 8, 8, 0, GL_RGB,
GL_UNSIGNED_BYTE, image);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
}
/* setup second texture object */
{
GLubyte image[4][4][3];
GLint i, j;
glBindTexture(GL_TEXTURE_2D, Textures[2]);
/* blue/gray checkerboard */
for (i = 0; i < 4; i++) {
for (j = 0; j < 4; j++) {
if ((i ^ j) & 1) {
image[i][j][0] = 0;
image[i][j][1] = 0;
image[i][j][2] = 255;
}
else {
image[i][j][0] = 200;
image[i][j][1] = 200;
image[i][j][2] = 200;
}
}
}
glPixelStorei(GL_UNPACK_ALIGNMENT, 2);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 4, 4, 0, GL_RGB,
GL_UNSIGNED_BYTE, image);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
}
/* Now make the cube object display list */
printf("GL_RENDERER: %s\n", (char *) glGetString(GL_RENDERER));
printf("GL_VERSION: %s\n", (char *) glGetString(GL_VERSION));
printf("GL_VENDOR: %s\n", (char *) glGetString(GL_VENDOR));
}
static void
Redraw(struct window *h)
{
EnterCriticalSection(&h->drawMutex);
if (!wglMakeCurrent(h->hDC, h->Context)) {
LeaveCriticalSection(&h->drawMutex);
Error("wglMakeCurrent failed in Redraw");
return;
}
h->Angle += 1.0;
glShadeModel(GL_FLAT);
glClearColor(0.25, 0.25, 0.25, 1.0);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glEnable(GL_TEXTURE_2D);
glEnable(GL_DEPTH_TEST);
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
glColor3f(1, 1, 1);
glPushMatrix();
if (h->Id == 0)
glRotatef(h->Angle, 0, 1, -1);
else if (h->Id == 1)
glRotatef(-(h->Angle), 0, 1, -1);
else if (h->Id == 2)
glRotatef(h->Angle, 0, 1, 1);
else if (h->Id == 3)
glRotatef(-(h->Angle), 0, 1, 1);
glBindTexture(GL_TEXTURE_2D, Textures[0]);
glBegin(GL_POLYGON);
glTexCoord2f(0, 0); glVertex3f(-1, -1, -1);
glTexCoord2f(1, 0); glVertex3f(-1, 1, -1);
glTexCoord2f(1, 1); glVertex3f(-1, 1, 1);
glTexCoord2f(0, 1); glVertex3f(-1, -1, 1);
glEnd();
glBegin(GL_POLYGON);
glTexCoord2f(0, 0); glVertex3f(1, -1, -1);
glTexCoord2f(1, 0); glVertex3f(1, 1, -1);
glTexCoord2f(1, 1); glVertex3f(1, 1, 1);
glTexCoord2f(0, 1); glVertex3f(1, -1, 1);
glEnd();
glBindTexture(GL_TEXTURE_2D, Textures[1]);
glBegin(GL_POLYGON);
glTexCoord2f(0, 0); glVertex3f(-1, -1, -1);
glTexCoord2f(1, 0); glVertex3f( 1, -1, -1);
glTexCoord2f(1, 1); glVertex3f( 1, -1, 1);
glTexCoord2f(0, 1); glVertex3f(-1, -1, 1);
glEnd();
glBegin(GL_POLYGON);
glTexCoord2f(0, 0); glVertex3f(-1, 1, -1);
glTexCoord2f(1, 0); glVertex3f( 1, 1, -1);
glTexCoord2f(1, 1); glVertex3f( 1, 1, 1);
glTexCoord2f(0, 1); glVertex3f(-1, 1, 1);
glEnd();
glBindTexture(GL_TEXTURE_2D, Textures[2]);
glBegin(GL_POLYGON);
glTexCoord2f(0, 0); glVertex3f(-1, -1, -1);
glTexCoord2f(1, 0); glVertex3f( 1, -1, -1);
glTexCoord2f(1, 1); glVertex3f( 1, 1, -1);
glTexCoord2f(0, 1); glVertex3f(-1, 1, -1);
glEnd();
glBegin(GL_POLYGON);
glTexCoord2f(0, 0); glVertex3f(-1, -1, 1);
glTexCoord2f(1, 0); glVertex3f( 1, -1, 1);
glTexCoord2f(1, 1); glVertex3f( 1, 1, 1);
glTexCoord2f(0, 1); glVertex3f(-1, 1, 1);
glEnd();
glPopMatrix();
SwapBuffers(h->hDC);
if (!wglMakeCurrent(NULL, NULL)) {
Error("wglMakeCurrent failed in Redraw");
}
LeaveCriticalSection(&h->drawMutex);
}
static DWORD WINAPI
threadRunner (void *arg)
{
struct thread_init_arg *tia = (struct thread_init_arg *) arg;
struct window *win;
PIXELFORMATDESCRIPTOR pfd = {0};
int visinfo;
win = &Windows[tia->id];
win->hDC = GetDC(win->Win);
if (!win->hDC) {
Error("Couldn't obtain HDC");
}
pfd.cColorBits = 24;
pfd.cDepthBits = 24;
pfd.dwFlags = PFD_DOUBLEBUFFER | PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL;
pfd.iLayerType = PFD_MAIN_PLANE;
pfd.iPixelType = PFD_TYPE_RGBA;
pfd.nSize = sizeof(pfd);
pfd.nVersion = 1;
visinfo = ChoosePixelFormat(win->hDC, &pfd);
if (!visinfo) {
Error("Unable to find RGB, Z, double-buffered visual");
}
SetPixelFormat(win->hDC, visinfo, &pfd);
win->Context = wglCreateContext(win->hDC);
if (!win->Context) {
Error("Couldn't create WGL context");
}
if (win->sharedContext) {
wglShareLists(win->sharedContext, win->Context);
}
SendMessage(win->Win, WM_SIZE, 0, 0);
while (1) {
MSG msg;
/* wait 1 ms for signal either to exit or process messages */
switch (MsgWaitForMultipleObjects(1, &terminate, FALSE, 1, QS_ALLINPUT)) {
case WAIT_OBJECT_0:
SendMessage(win->Win, WM_CLOSE, 0, 0);
break;
case WAIT_OBJECT_0 + 1:
break;
}
while (PeekMessage(&msg, NULL, 0, 0, PM_REMOVE)) {
if (msg.message == WM_QUIT) {
return 0;
}
TranslateMessage(&msg);
DispatchMessage(&msg);
}
Redraw(win);
}
return 0;
}
static void
Resize(struct window *h, unsigned int width, unsigned int height)
{
if (!h->Context)
return;
EnterCriticalSection(&h->drawMutex);
if (!wglMakeCurrent(h->hDC, h->Context)) {
LeaveCriticalSection(&h->drawMutex);
Error("wglMakeCurrent failed in Resize()");
return;
}
glViewport(0, 0, width, height);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glFrustum(-1, 1, -1, 1, 2, 10);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glTranslatef(0, 0, -4.5);
if (!wglMakeCurrent(NULL, NULL)) {
Error("wglMakeCurrent failed in Resize()");
}
LeaveCriticalSection(&h->drawMutex);
}
int
main(int argc, char *argv[])
{
struct thread_init_arg tia[MAX_WINDOWS];
struct window *h[MAX_WINDOWS];
HANDLE threads[MAX_WINDOWS];
int i;
terminate = CreateEvent(NULL, TRUE, FALSE, NULL);
if (initMainthread())
return -1;
/* four windows and contexts sharing display lists and texture objects */
h[0] = AddWindow( 10, 10, gCtx);
h[1] = AddWindow(330, 10, gCtx);
h[2] = AddWindow( 10, 350, gCtx);
h[3] = AddWindow(330, 350, gCtx);
if (!wglMakeCurrent(gHDC, gCtx)) {
Error("wglMakeCurrent failed for init thread.");
return -1;
}
InitGLstuff();
for (i = 0; i < NumWindows; i++) {
DWORD id;
tia[i].id = i;
threads[i] = CreateThread(NULL, 0, threadRunner, &tia[i], 0, &id);
}
while (1) {
MSG msg;
/* wait 1 ms for signal either to exit or process messages */
switch (MsgWaitForMultipleObjects(NumWindows, threads, TRUE, 1, QS_ALLINPUT)) {
case WAIT_OBJECT_0:
return 0;
}
while (PeekMessage(&msg, NULL, 0, 0, PM_REMOVE)) {
if (msg.message == WM_QUIT) {
return 0;
}
TranslateMessage(&msg);
DispatchMessage(&msg);
}
}
return 0;
}
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