commit bfbb8e59fadda112fcdb0bf0a0ed2c0b6c1e1923
author Stanislav Vorobiov <s.vorobiov@samsung.com> Thu Aug 29 11:36:44 2013 +0400
committer Kristian Høgsberg <krh@bitplanet.net> Wed Sep 11 10:56:00 2013 -0700
tree cf04a934fa0733a6e97d842dc155ca39f7151a5f
parent 9a6f02a6b1b20e803e816cdf0aee69eea3c0ff85

gl_renderer: Use EGL_WAYLAND_Y_INVERTED_WL to query wl_buffer's orientation

src/compositor.c

diff --git a/src/compositor.c b/src/compositor.c
index 74f0aab..8c9e0fe 100644
--- a/src/compositor.c
+++ b/src/compositor.c
@@ -1088,6 +1088,7 @@
 	buffer->resource = resource;
 	wl_signal_init(&buffer->destroy_signal);
 	buffer->destroy_listener.notify = weston_buffer_destroy_handler;
+	buffer->y_inverted = 1;
 	wl_resource_add_destroy_listener(resource, &buffer->destroy_listener);
 	
 	return buffer;

src/compositor.h

diff --git a/src/compositor.h b/src/compositor.h
index a6f2c62..50e96ff 100644
--- a/src/compositor.h
+++ b/src/compositor.h
@@ -611,6 +611,7 @@
 	};
 	int32_t width, height;
 	uint32_t busy_count;
+	int y_inverted;
 };
 
 struct weston_buffer_reference {

src/gl-renderer.c

diff --git a/src/gl-renderer.c b/src/gl-renderer.c
index af8011b..4381a2e 100644
--- a/src/gl-renderer.c
+++ b/src/gl-renderer.c
@@ -77,6 +77,7 @@
 	enum buffer_type buffer_type;
 	int pitch; /* in pixels */
 	int height; /* in pixels */
+	int y_inverted;
 };
 
 struct gl_renderer {
@@ -599,7 +600,11 @@
 				weston_surface_to_buffer_float(es, sx, sy,
 							       &bx, &by);
 				*(v++) = bx * inv_width;
-				*(v++) = by * inv_height;
+				if (gs->y_inverted) {
+					*(v++) = by * inv_height;
+				} else {
+					*(v++) = (gs->height - by) * inv_height;
+				}
 			}
 
 			vtxcnt[nvtx++] = n;
@@ -1260,6 +1265,7 @@
 		gs->target = GL_TEXTURE_2D;
 		gs->buffer_type = BUFFER_TYPE_SHM;
 		gs->needs_full_upload = 1;
+		gs->y_inverted = 1;
 
 		ensure_textures(gs, 1);
 		glBindTexture(GL_TEXTURE_2D, gs->textures[0]);
@@ -1284,6 +1290,8 @@
 			 EGL_WIDTH, &buffer->width);
 	gr->query_buffer(gr->egl_display, buffer->legacy_buffer,
 			 EGL_HEIGHT, &buffer->height);
+	gr->query_buffer(gr->egl_display, buffer->legacy_buffer,
+			 EGL_WAYLAND_Y_INVERTED_WL, &buffer->y_inverted);
 
 	for (i = 0; i < gs->num_images; i++)
 		gr->destroy_image(gr->egl_display, gs->images[i]);
@@ -1340,6 +1348,7 @@
 	gs->pitch = buffer->width;
 	gs->height = buffer->height;
 	gs->buffer_type = BUFFER_TYPE_EGL;
+	gs->y_inverted = buffer->y_inverted;
 }
 
 static void
@@ -1363,6 +1372,7 @@
 		glDeleteTextures(gs->num_textures, gs->textures);
 		gs->num_textures = 0;
 		gs->buffer_type = BUFFER_TYPE_NULL;
+		gs->y_inverted = 1;
 		return;
 	}
 
@@ -1377,6 +1387,7 @@
 		weston_log("unhandled buffer type!\n");
 		weston_buffer_reference(&gs->buffer_ref, NULL);
 		gs->buffer_type = BUFFER_TYPE_NULL;
+		gs->y_inverted = 1;
 	}
 }
 
@@ -1409,6 +1420,7 @@
 	 * by zero there.
 	 */
 	gs->pitch = 1;
+	gs->y_inverted = 1;
 
 	pixman_region32_init(&gs->texture_damage);
 	surface->renderer_state = gs;

src/weston-egl-ext.h

diff --git a/src/weston-egl-ext.h b/src/weston-egl-ext.h
index 6aa49fd..bab87be 100644
--- a/src/weston-egl-ext.h
+++ b/src/weston-egl-ext.h
@@ -62,6 +62,10 @@
 #define EGL_BUFFER_AGE_EXT              0x313D
 #endif
 
+#ifndef EGL_WAYLAND_Y_INVERTED_WL
+#define EGL_WAYLAND_Y_INVERTED_WL		0x31DB /* eglQueryWaylandBufferWL attribute */
+#endif
+
 /* Mesas gl2ext.h and probably Khronos upstream defined
  * GL_EXT_unpack_subimage with non _EXT suffixed GL_UNPACK_* tokens.
  * In case we're using that mess, manually define the _EXT versions