meta-xilinx/meta-xilinx-bsp/recipes-graphics/weston/files/0001-gl-renderer.c-Use-gr-egl_config-to-create-pbuffer-su.patch

From 7cc76d50bddd6ff1eb5fb19712415f385f5d3f49 Mon Sep 17 00:00:00 2001
From: Madhurkiran Harikrishnan <madhurkiran.harikrishnan@xilinx.com>
Date: Mon, 3 Feb 2020 14:26:21 -0800
Subject: [PATCH] gl-renderer.c: Use gr->egl_config to create pbuffer surface

The original implementation always chose first egl config for pbuffer
surface type, however the returned configs are implementation specific
and egl config may not always match between ctx and surface. Hence,
use gr->egl_config which already has the matching config but ensure that
windows and pbuffer bit are set for the surface type.

Signed-off-by: Madhurkiran Harikrishnan <madhurkiran.harikrishnan@xilinx.com>
Upstream-status: Pending
---
 libweston/renderer-gl/gl-renderer.c | 28 ++++++++++++++--------------
 1 file changed, 14 insertions(+), 14 deletions(-)

diff --git a/libweston/renderer-gl/gl-renderer.c b/libweston/renderer-gl/gl-renderer.c
index 54f8b1c..f50c959 100644
--- a/libweston/renderer-gl/gl-renderer.c
+++ b/libweston/renderer-gl/gl-renderer.c
@@ -3567,7 +3567,7 @@ gl_renderer_setup_egl_extensions(struct weston_compositor *ec)
 }
 
 static const EGLint gl_renderer_opaque_attribs[] = {
-	EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
+	EGL_SURFACE_TYPE, EGL_WINDOW_BIT | EGL_PBUFFER_BIT,
 	EGL_RED_SIZE, 1,
 	EGL_GREEN_SIZE, 1,
 	EGL_BLUE_SIZE, 1,
@@ -3577,7 +3577,7 @@ static const EGLint gl_renderer_opaque_attribs[] = {
 };
 
 static const EGLint gl_renderer_alpha_attribs[] = {
-	EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
+	EGL_SURFACE_TYPE, EGL_WINDOW_BIT | EGL_PBUFFER_BIT,
 	EGL_RED_SIZE, 1,
 	EGL_GREEN_SIZE, 1,
 	EGL_BLUE_SIZE, 1,
@@ -3682,15 +3682,7 @@ static int
 gl_renderer_create_pbuffer_surface(struct gl_renderer *gr) {
 	EGLConfig pbuffer_config;
 
-	static const EGLint pbuffer_config_attribs[] = {
-		EGL_SURFACE_TYPE, EGL_PBUFFER_BIT,
-		EGL_RED_SIZE, 1,
-		EGL_GREEN_SIZE, 1,
-		EGL_BLUE_SIZE, 1,
-		EGL_ALPHA_SIZE, 0,
-		EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
-		EGL_NONE
-	};
+	EGLint surface_type;
 
 	static const EGLint pbuffer_attribs[] = {
 		EGL_WIDTH, 10,
@@ -3698,13 +3690,21 @@ gl_renderer_create_pbuffer_surface(struct gl_renderer *gr) {
 		EGL_NONE
 	};
 
-	if (egl_choose_config(gr, pbuffer_config_attribs, NULL, 0, &pbuffer_config) < 0) {
-		weston_log("failed to choose EGL config for PbufferSurface\n");
+	if(!eglGetConfigAttrib(gr->egl_display, gr->egl_config, EGL_SURFACE_TYPE, &surface_type)) {
+		weston_log("failed to get surface type for PbufferSurface\n");
+		return -1;
+	}
+
+	if (!((surface_type & EGL_WINDOW_BIT) && (surface_type & EGL_PBUFFER_BIT)) &&
+	    !gr->has_configless_context) {
+		weston_log("attempted to use a different EGL config for an "
+			   "output but EGL_KHR_no_config_context or "
+			   "EGL_MESA_configless_context is not supported\n");
 		return -1;
 	}
 
 	gr->dummy_surface = eglCreatePbufferSurface(gr->egl_display,
-						    pbuffer_config,
+						    gr->egl_config,
 						    pbuffer_attribs);
 
 	if (gr->dummy_surface == EGL_NO_SURFACE) {
-- 
2.7.4