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Make Pbuffers that share the display context be single-buffered (linux part)

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This commit is contained in:
Elias Naur 2004-07-26 13:36:04 +00:00
parent 1aee4598a9
commit 665f971aec
37 changed files with 525 additions and 281 deletions
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53
src/native/linux/org_lwjgl_opengl_Pbuffer.cpp
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@ -128,6 +128,50 @@ static bool createPbufferUsingUniqueContext(JNIEnv *env, PbufferInfo *pbuffer_in
return true;
}
static bool configMatches(const GLXFBConfig config1, const GLXFBConfig config2, int glx_val) {
int config_val1;
int config_val2;
if (glXGetFBConfigAttrib(getDisplay(), config1, glx_val, &config_val1) != Success)
return false;
if (glXGetFBConfigAttrib(getDisplay(), config2, glx_val, &config_val2) != Success)
return false;
return config_val1 == config_val2;
}
static GLXFBConfig chooseSingleBufferedConfigFromConfig(const GLXFBConfig orig_config) {
int num_elements;
GLXFBConfig *configs = glXGetFBConfigs(getDisplay(), getCurrentScreen(), &num_elements);
for (int i = 0; i < num_elements; i++) {
GLXFBConfig config = configs[i];
int double_buffer;
int drawable_type;
if (glXGetFBConfigAttrib(getDisplay(), config, GLX_DOUBLEBUFFER, &double_buffer) != Success)
return NULL;
if (glXGetFBConfigAttrib(getDisplay(), config, GLX_DRAWABLE_TYPE, &drawable_type) != Success)
return NULL;
if (double_buffer != False || (drawable_type & GLX_PBUFFER_BIT == 0))
continue;
if (configMatches(config, orig_config, GLX_RED_SIZE) &&
configMatches(config, orig_config, GLX_GREEN_SIZE) &&
configMatches(config, orig_config, GLX_BLUE_SIZE) &&
configMatches(config, orig_config, GLX_ALPHA_SIZE) &&
configMatches(config, orig_config, GLX_DEPTH_SIZE) &&
configMatches(config, orig_config, GLX_STENCIL_SIZE) &&
configMatches(config, orig_config, GLX_STEREO) &&
configMatches(config, orig_config, GLX_AUX_BUFFERS) &&
configMatches(config, orig_config, GLX_ACCUM_RED_SIZE) &&
configMatches(config, orig_config, GLX_ACCUM_GREEN_SIZE) &&
configMatches(config, orig_config, GLX_ACCUM_BLUE_SIZE) &&
configMatches(config, orig_config, GLX_ACCUM_ALPHA_SIZE) &&
configMatches(config, orig_config, GLX_RENDER_TYPE) &&
(!extgl_Extensions.GLX_ARB_multisample || (configMatches(config, orig_config, GLX_SAMPLE_BUFFERS_ARB) &&
configMatches(config, orig_config, GLX_SAMPLES_ARB)))) {
return config;
}
}
return NULL;
}
static bool createPbufferUsingDisplayContext(JNIEnv *env, PbufferInfo *buffer_info, int width, int height, const int *buffer_attribs) {
if (!checkPbufferCaps(env, getCurrentGLXFBConfig(), width, height)) {
return false;
@ -141,7 +185,12 @@ static bool createPbufferUsingDisplayContext(JNIEnv *env, PbufferInfo *buffer_in
throwException(env, "Display context does not support Pbuffers");
return false;
}
GLXPbuffer buffer = glXCreatePbuffer(getDisplay(), getCurrentGLXFBConfig(), buffer_attribs);
GLXFBConfig config = chooseSingleBufferedConfigFromConfig(getCurrentGLXFBConfig());
if (config == NULL) {
throwException(env, "Could not find a suitable GLXFBConfig");
return false;
}
GLXPbuffer buffer = glXCreatePbuffer(getDisplay(), config, buffer_attribs);
buffer_info->buffer = buffer;
buffer_info->context = getCurrentGLXContext();
return true;
@ -153,7 +202,7 @@ JNIEXPORT void JNICALL Java_org_lwjgl_opengl_Pbuffer_nCreate(JNIEnv *env, jclass
if (disp == NULL) {
return;
}
int current_screen = XDefaultScreen(disp);
int current_screen = getCurrentScreen();
if (!extgl_InitGLX(env, disp, current_screen)) {
decDisplay();
throwException(env, "Could not init GLX");