diff options
| -rw-r--r-- | progs/xdemos/manywin.c | 71 |
1 files changed, 62 insertions, 9 deletions
diff --git a/progs/xdemos/manywin.c b/progs/xdemos/manywin.c index a0286bdbcb5..c9cca751341 100644 --- a/progs/xdemos/manywin.c +++ b/progs/xdemos/manywin.c @@ -1,6 +1,7 @@ /* - * Create N GLX windows/contexts and render to them in round-robin - * order. + * Create N GLX windows/contexts and render to them in round-robin order. + * Also, have the contexts share all texture objects. + * Press 'd' to delete a texture, 'u' to unbind it. * * Copyright (C) 2000 Brian Paul All Rights Reserved. * @@ -25,10 +26,12 @@ #include <GL/gl.h> #include <GL/glx.h> +#include <assert.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <unistd.h> +#include <X11/keysym.h> /* @@ -50,7 +53,7 @@ struct head { static struct head Heads[MAX_HEADS]; static int NumHeads = 0; static GLboolean SwapSeparate = GL_TRUE; - +static GLuint TexObj = 0; static void @@ -129,8 +132,14 @@ AddHead(const char *displayName, const char *name) None, (char **)NULL, 0, &sizehints); } - - ctx = glXCreateContext(dpy, visinfo, NULL, True); + if (NumHeads == 0) { + ctx = glXCreateContext(dpy, visinfo, NULL, True); + } + else { + /* share textures & dlists with 0th context */ + printf("sharing\n"); + ctx = glXCreateContext(dpy, visinfo, Heads[0].Context, True); + } if (!ctx) { Error(displayName, "Couldn't create GLX context"); return NULL; @@ -144,6 +153,27 @@ AddHead(const char *displayName, const char *name) return NULL; } + if (NumHeads == 0) { + /* create texture object now */ + static const GLubyte checker[2][2][4] = { + { {255, 255, 255, 255}, { 0, 0, 0, 255} }, + { { 0, 0, 0, 0}, {255, 255, 255, 255} } + }; + glGenTextures(1, &TexObj); + assert(TexObj); + glBindTexture(GL_TEXTURE_2D, TexObj); + glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 2, 2, 0, GL_RGB, + GL_UNSIGNED_BYTE, checker); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); + } + else { + /* bind 0th context's texture in this context too */ + assert(TexObj); + glBindTexture(GL_TEXTURE_2D, TexObj); + } + glEnable(GL_TEXTURE_2D); + /* save the info for this head */ { struct head *h = &Heads[NumHeads]; @@ -194,9 +224,9 @@ Redraw(struct head *h) glPushMatrix(); glRotatef(h->Angle, 0, 0, 1); glBegin(GL_TRIANGLES); - glVertex2f(0, 0.8); - glVertex2f(-0.8, -0.7); - glVertex2f(0.8, -0.7); + glTexCoord2f(0.5, 1.0); glVertex2f(0, 0.8); + glTexCoord2f(0.0, 0.0); glVertex2f(-0.8, -0.7); + glTexCoord2f(1.0, 0.0); glVertex2f(0.8, -0.7); glEnd(); glPopMatrix(); @@ -249,7 +279,30 @@ EventLoop(void) Resize(h, event.xconfigure.width, event.xconfigure.height); break; case KeyPress: - return; + { + char buf[100]; + KeySym keySym; + XComposeStatus stat; + XLookupString(&event.xkey, buf, sizeof(buf), &keySym, &stat); + switch (keySym) { + case XK_Escape: + exit(0); + break; + case XK_d: + case XK_D: + printf("Delete Texture in window %d\n", i); + glXMakeCurrent(h->Dpy, h->Win, h->Context); + glDeleteTextures(1, &TexObj); + break; + case XK_u: + case XK_U: + printf("Unbind Texture in window %d\n", i); + glXMakeCurrent(h->Dpy, h->Win, h->Context); + glBindTexture(GL_TEXTURE_2D, 0); + break; + } + } + break; default: /*no-op*/ ; } |