Add rotation to surfaceflingers screen cap.
+ This is needed so that activity manager does not
have to do cpu side rotations when capturing recents
thumbnails.
Change-Id: If998008e675ad01305db8399fd643cf4608b7025
diff --git a/services/surfaceflinger/RenderEngine/GLES20RenderEngine.cpp b/services/surfaceflinger/RenderEngine/GLES20RenderEngine.cpp
index 8c1f04e..8ebafbc 100644
--- a/services/surfaceflinger/RenderEngine/GLES20RenderEngine.cpp
+++ b/services/surfaceflinger/RenderEngine/GLES20RenderEngine.cpp
@@ -25,6 +25,8 @@
#include <utils/Trace.h>
#include <cutils/compiler.h>
+#include <gui/ISurfaceComposer.h>
+#include <math.h>
#include "GLES20RenderEngine.h"
#include "Program.h"
@@ -80,7 +82,8 @@
}
void GLES20RenderEngine::setViewportAndProjection(
- size_t vpw, size_t vph, Rect sourceCrop, size_t hwh, bool yswap) {
+ size_t vpw, size_t vph, Rect sourceCrop, size_t hwh, bool yswap,
+ Transform::orientation_flags rotation) {
size_t l = sourceCrop.left;
size_t r = sourceCrop.right;
@@ -96,6 +99,24 @@
m = mat4::ortho(l, r, b, t, 0, 1);
}
+ // Apply custom rotation to the projection.
+ float rot90InRadians = 2.0f * static_cast<float>(M_PI) / 4.0f;
+ switch (rotation) {
+ case Transform::ROT_0:
+ break;
+ case Transform::ROT_90:
+ m = mat4::rotate(rot90InRadians, vec3(0,0,1)) * m;
+ break;
+ case Transform::ROT_180:
+ m = mat4::rotate(rot90InRadians * 2.0f, vec3(0,0,1)) * m;
+ break;
+ case Transform::ROT_270:
+ m = mat4::rotate(rot90InRadians * 3.0f, vec3(0,0,1)) * m;
+ break;
+ default:
+ break;
+ }
+
glViewport(0, 0, vpw, vph);
mState.setProjectionMatrix(m);
mVpWidth = vpw;