From c45a3b80e2356a952248eaafaeeec48b28bcb0fd Mon Sep 17 00:00:00 2001
From: Antonioya <blendergit@gmail.com>
Date: Thu, 21 Jun 2018 16:10:52 +0200
Subject: Fix T55555: Crash when select material properties

This error is only in Windows and Mac when select in properties the material tab.

This commit revert dc856be8399242f4ee3a2ce0450b7ac5a20b35f6 Preview: Add own opengl context to render preview images.
---
 source/blender/editors/render/render_preview.c | 48 ++------------------------
 1 file changed, 2 insertions(+), 46 deletions(-)

(limited to 'source/blender/editors/render')

diff --git a/source/blender/editors/render/render_preview.c b/source/blender/editors/render/render_preview.c
index cdd79f43a72..4a3c7a3fd4b 100644
--- a/source/blender/editors/render/render_preview.c
+++ b/source/blender/editors/render/render_preview.c
@@ -176,9 +176,6 @@ typedef struct ShaderPreview {
 
 	Main *bmain;
 	Main *pr_main;
-
-	void *gl_context;
-	bool  gl_context_owner;
 } ShaderPreview;
 
 typedef struct IconPreviewSize {
@@ -194,8 +191,6 @@ typedef struct IconPreview {
 	void *owner;
 	ID *id;
 	ListBase sizes;
-
-	void *gl_context;
 } IconPreview;
 
 /* *************************** Preview for buttons *********************** */
@@ -746,10 +741,6 @@ static void shader_preview_render(ShaderPreview *sp, ID *id, int split, int firs
 	/* set this for all previews, default is react to G.is_break still */
 	RE_test_break_cb(re, sp, shader_preview_break);
 
-	if (sp->gl_context) {
-		RE_gl_context_set(re, sp->gl_context);
-	}
-
 	/* lens adjust */
 	oldlens = ((Camera *)sce->camera->data)->lens;
 	if (sizex > sp->sizey)
@@ -869,10 +860,6 @@ static void shader_preview_free(void *customdata)
 		}
 		MEM_freeN(sp->lampcopy);
 	}
-	if (sp->gl_context_owner && sp->gl_context) {
-		WM_opengl_context_dispose(sp->gl_context);
-		sp->gl_context = NULL;
-	}
 
 	MEM_freeN(sp);
 }
@@ -1088,8 +1075,6 @@ static void icon_preview_startjob_all_sizes(void *customdata, short *stop, short
 		sp->pr_rect = cur_size->rect;
 		sp->id = ip->id;
 		sp->bmain = ip->bmain;
-		sp->gl_context = ip->gl_context;
-		sp->gl_context_owner = false;
 
 		if (is_render) {
 			BLI_assert(ip->id);
@@ -1106,11 +1091,6 @@ static void icon_preview_startjob_all_sizes(void *customdata, short *stop, short
 		common_preview_startjob(sp, stop, do_update, progress);
 		shader_preview_free(sp);
 	}
-
-	if (ip->gl_context) {
-		WM_opengl_context_dispose(ip->gl_context);
-		ip->gl_context = NULL;
-	}
 }
 
 static void icon_preview_endjob(void *customdata)
@@ -1194,17 +1174,8 @@ void ED_preview_icon_job(const bContext *C, void *owner, ID *id, unsigned int *r
 
 	/* render all resolutions from suspended job too */
 	old_ip = WM_jobs_customdata_get(wm_job);
-	if (old_ip) {
+	if (old_ip)
 		BLI_movelisttolist(&ip->sizes, &old_ip->sizes);
-		/* NOTE: This assumes that it will be the same thread
-		 * that will be used when resuming the job. */
-		ip->gl_context = old_ip->gl_context;
-	}
-
-	if (ip->gl_context == NULL) {
-		/* Create context in the main thread. */
-		ip->gl_context = WM_opengl_context_create();
-	}
 
 	/* customdata for preview thread */
 	ip->bmain = CTX_data_main(C);
@@ -1235,7 +1206,7 @@ void ED_preview_shader_job(const bContext *C, void *owner, ID *id, ID *parent, M
 {
 	Object *ob = CTX_data_active_object(C);
 	wmJob *wm_job;
-	ShaderPreview *sp, *old_sp;
+	ShaderPreview *sp;
 	Scene *scene = CTX_data_scene(C);
 	short id_type = GS(id->name);
 
@@ -1252,21 +1223,6 @@ void ED_preview_shader_job(const bContext *C, void *owner, ID *id, ID *parent, M
 	                    WM_JOB_EXCL_RENDER, WM_JOB_TYPE_RENDER_PREVIEW);
 	sp = MEM_callocN(sizeof(ShaderPreview), "shader preview");
 
-	/* Reuse previous gl context. */
-	old_sp = WM_jobs_customdata_get(wm_job);
-	if (old_sp) {
-		/* NOTE: This assumes that it will be the same thread
-		 * that will be used when resuming the job. */
-		old_sp->gl_context_owner = false; /* Don't free it */
-		sp->gl_context = old_sp->gl_context;
-	}
-
-	if (sp->gl_context == NULL) {
-		/* Create context in the main thread. */
-		sp->gl_context = WM_opengl_context_create();
-	}
-	sp->gl_context_owner = true;
-
 	/* customdata for preview thread */
 	sp->scene = scene;
 	sp->depsgraph = CTX_data_depsgraph(C);
-- 
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