From 5293b96b160b904c0e53cbce93679c3aa090f846 Mon Sep 17 00:00:00 2001 From: Adam Jackson Date: Tue, 7 Nov 2017 11:36:53 -0500 Subject: [PATCH] glx: Implement GLX_EXT_no_config_context (v2) This more or less ports EGL_KHR_no_config_context to GLX. v2: Enable the extension only for those backends that support it. Khronos: https://github.com/KhronosGroup/OpenGL-Registry/pull/102 Reviewed-by: Kenneth Graunke Signed-off-by: Adam Jackson --- src/glx/create_context.c | 39 ++++++++++++++++++++++++++------------- src/glx/dri2_glx.c | 1 + src/glx/dri3_glx.c | 1 + src/glx/drisw_glx.c | 1 + src/glx/glxextensions.c | 1 + src/glx/glxextensions.h | 1 + 6 files changed, 31 insertions(+), 13 deletions(-) diff --git a/src/glx/create_context.c b/src/glx/create_context.c index 38e949ab4cd..eab6511ad87 100644 --- a/src/glx/create_context.c +++ b/src/glx/create_context.c @@ -47,28 +47,41 @@ glXCreateContextAttribsARB(Display *dpy, GLXFBConfig config, xcb_generic_error_t *err; xcb_void_cookie_t cookie; unsigned dummy_err = 0; + int screen = -1; - - if (dpy == NULL || cfg == NULL) + if (dpy == NULL) return NULL; + /* Count the number of attributes specified by the application. All + * attributes appear in pairs, except the terminating None. + */ + if (attrib_list != NULL) { + for (/* empty */; attrib_list[num_attribs * 2] != 0; num_attribs++) + /* empty */ ; + } + + if (cfg) { + screen = cfg->screen; + } else { + int i; + for (i = 0; i < num_attribs; i++) { + if (attrib_list[i * 2] == GLX_SCREEN) + screen = attrib_list[i * 2 + 1]; + } + } + /* This means that either the caller passed the wrong display pointer or * one of the internal GLX data structures (probably the fbconfig) has an * error. There is nothing sensible to do, so return an error. */ - psc = GetGLXScreenConfigs(dpy, cfg->screen); + psc = GetGLXScreenConfigs(dpy, screen); if (psc == NULL) return NULL; - assert(cfg->screen == psc->scr); + assert(screen == psc->scr); - /* Count the number of attributes specified by the application. All - * attributes appear in pairs, except the terminating None. - */ - if (attrib_list != NULL) { - for (/* empty */; attrib_list[num_attribs * 2] != 0; num_attribs++) - /* empty */ ; - } + if (!cfg && !__glXExtensionBitIsEnabled(psc, EXT_no_config_context_bit)) + return NULL; if (direct && psc->vtable->create_context_attribs) { /* GLX drops the error returned by the driver. The expectation is that @@ -104,8 +117,8 @@ glXCreateContextAttribsARB(Display *dpy, GLXFBConfig config, cookie = xcb_glx_create_context_attribs_arb_checked(c, gc->xid, - cfg->fbconfigID, - cfg->screen, + cfg ? cfg->fbconfigID : 0, + screen, gc->share_xid, gc->isDirect, num_attribs, diff --git a/src/glx/dri2_glx.c b/src/glx/dri2_glx.c index 0f44635725d..eeec4f0d603 100644 --- a/src/glx/dri2_glx.c +++ b/src/glx/dri2_glx.c @@ -1129,6 +1129,7 @@ dri2BindExtensions(struct dri2_screen *psc, struct glx_display * priv, __glXEnableDirectExtension(&psc->base, "GLX_ARB_create_context"); __glXEnableDirectExtension(&psc->base, "GLX_ARB_create_context_profile"); + __glXEnableDirectExtension(&psc->base, "GLX_EXT_no_config_context"); if ((mask & ((1 << __DRI_API_GLES) | (1 << __DRI_API_GLES2) | diff --git a/src/glx/dri3_glx.c b/src/glx/dri3_glx.c index fa048f990a9..4470d1ef68d 100644 --- a/src/glx/dri3_glx.c +++ b/src/glx/dri3_glx.c @@ -719,6 +719,7 @@ dri3_bind_extensions(struct dri3_screen *psc, struct glx_display * priv, __glXEnableDirectExtension(&psc->base, "GLX_ARB_create_context"); __glXEnableDirectExtension(&psc->base, "GLX_ARB_create_context_profile"); + __glXEnableDirectExtension(&psc->base, "GLX_EXT_no_config_context"); if ((mask & ((1 << __DRI_API_GLES) | (1 << __DRI_API_GLES2) | diff --git a/src/glx/drisw_glx.c b/src/glx/drisw_glx.c index 2f0675addb4..1f86ac2d4c0 100644 --- a/src/glx/drisw_glx.c +++ b/src/glx/drisw_glx.c @@ -630,6 +630,7 @@ driswBindExtensions(struct drisw_screen *psc, const __DRIextension **extensions) if (psc->swrast->base.version >= 3) { __glXEnableDirectExtension(&psc->base, "GLX_ARB_create_context"); __glXEnableDirectExtension(&psc->base, "GLX_ARB_create_context_profile"); + __glXEnableDirectExtension(&psc->base, "GLX_EXT_no_config_context"); /* DRISW version >= 2 implies support for OpenGL ES. */ diff --git a/src/glx/glxextensions.c b/src/glx/glxextensions.c index af6ffbf6600..4853ad534e2 100644 --- a/src/glx/glxextensions.c +++ b/src/glx/glxextensions.c @@ -146,6 +146,7 @@ static const struct extension_info known_glx_extensions[] = { { GLX(EXT_fbconfig_packed_float), VER(0,0), Y, Y, N, N }, { GLX(EXT_framebuffer_sRGB), VER(0,0), Y, Y, N, N }, { GLX(EXT_import_context), VER(0,0), Y, Y, N, N }, + { GLX(EXT_no_config_context), VER(0,0), Y, N, N, N }, { GLX(EXT_texture_from_pixmap), VER(0,0), Y, N, N, N }, { GLX(EXT_visual_info), VER(0,0), Y, Y, N, N }, { GLX(EXT_visual_rating), VER(0,0), Y, Y, N, N }, diff --git a/src/glx/glxextensions.h b/src/glx/glxextensions.h index d73128bd0ea..07cd3af0ff7 100644 --- a/src/glx/glxextensions.h +++ b/src/glx/glxextensions.h @@ -50,6 +50,7 @@ enum EXT_fbconfig_packed_float_bit, EXT_framebuffer_sRGB_bit, EXT_import_context_bit, + EXT_no_config_context_bit, EXT_texture_from_pixmap_bit, EXT_visual_info_bit, EXT_visual_rating_bit, -- 2.11.0