Performance optimizations for MagicSmoke

The MagicSmoke wallpaper was modified to be single pass
multi texture rather than blended multipass.

Change-Id: If838a4abd2c3fa73def46c47d1f362c8a2af3363

4 files changed, 91 insertions, 0 deletions

diff --git a/res/raw/pf4tex.glslf b/res/raw/pf4tex.glslf
new file mode 100644
index 0000000..32810dc
--- /dev/null
+++ b/res/raw/pf4tex.glslf
@@ -0,0 +1,23 @@
+precision mediump float;
+
+varying vec2 varTex0;
+varying vec2 varTex1;
+varying vec2 varTex2;
+varying vec2 varTex3;
+
+void main() {
+    lowp vec4 tex =  texture2D(UNI_Tex0, varTex0);
+    lowp vec4 col = mix(UNI_clearColor, tex.rgba, tex.a);
+
+    tex = texture2D(UNI_Tex1, varTex1);
+    col = mix(col, tex.rgba, tex.a);
+
+    tex = texture2D(UNI_Tex2, varTex2);
+    col = mix(col, tex.rgba, tex.a);
+
+    tex = texture2D(UNI_Tex3, varTex3);
+    col = mix(col, tex.rgba, tex.a);
+
+    gl_FragColor = col;
+}
+
diff --git a/res/raw/pf5tex.glslf b/res/raw/pf5tex.glslf
new file mode 100644
index 0000000..b1da1f6
--- /dev/null
+++ b/res/raw/pf5tex.glslf
@@ -0,0 +1,26 @@
+precision mediump float;
+
+varying vec2 varTex0;
+varying vec2 varTex1;
+varying vec2 varTex2;
+varying vec2 varTex3;
+varying vec2 varTex4;
+
+void main() {
+    lowp vec4 tex =  texture2D(UNI_Tex0, varTex0);
+    lowp vec4 col = mix(UNI_clearColor, tex.rgba, tex.a);
+
+    tex = texture2D(UNI_Tex1, varTex1);
+    col = mix(col, tex.rgba, tex.a);
+
+    tex = texture2D(UNI_Tex2, varTex2);
+    col = mix(col, tex.rgba, tex.a);
+
+    tex = texture2D(UNI_Tex3, varTex3);
+    col = mix(col, tex.rgba, tex.a);
+
+    tex = texture2D(UNI_Tex4, varTex4);
+    col = mix(col, tex.rgba, tex.a);
+    gl_FragColor = col;
+}
+
diff --git a/res/raw/pv4tex.glslv b/res/raw/pv4tex.glslv
new file mode 100644
index 0000000..9fd1f04
--- /dev/null
+++ b/res/raw/pv4tex.glslv
@@ -0,0 +1,20 @@
+varying vec2 varTex0;
+varying vec2 varTex1;
+varying vec2 varTex2;
+varying vec2 varTex3;
+
+vec2 mul(vec4 uni, vec2 attr, float idx)
+{
+    float invz = 0.35 + idx*0.05;
+    return vec2(
+        0.5 + 0.5 * invz * (uni.z * ( uni.y * attr.x + uni.x * attr.y)) + uni.w,
+        0.5 + 0.5 * invz * (uni.z * (-uni.x * attr.x + uni.y * attr.y)));
+}
+
+void main() {
+    varTex0 = mul(UNI_layer0, ATTRIB_position.xy, 1.0);
+    varTex1 = mul(UNI_layer1, ATTRIB_position.xy, 2.0);
+    varTex2 = mul(UNI_layer2, ATTRIB_position.xy, 3.0);
+    varTex3 = mul(UNI_layer3, ATTRIB_position.xy, 4.0);
+    gl_Position = ATTRIB_position;
+}
diff --git a/res/raw/pv5tex.glslv b/res/raw/pv5tex.glslv
new file mode 100644
index 0000000..998f209
--- /dev/null
+++ b/res/raw/pv5tex.glslv
@@ -0,0 +1,22 @@
+varying vec2 varTex0;
+varying vec2 varTex1;
+varying vec2 varTex2;
+varying vec2 varTex3;
+varying vec2 varTex4;
+
+vec2 mul(vec4 uni, vec2 attr, float idx)
+{
+    float invz = 0.5 + idx*0.05;
+    return vec2(
+        0.5 + 0.5 * invz * (uni.z * ( uni.y * attr.x + uni.x * attr.y)) + uni.w,
+        0.5 + 0.5 * invz * (uni.z * (-uni.x * attr.x + uni.y * attr.y)));
+}
+
+void main() {
+    varTex0 = mul(UNI_layer0, ATTRIB_position.xy, 1.0);
+    varTex1 = mul(UNI_layer1, ATTRIB_position.xy, 2.0);
+    varTex2 = mul(UNI_layer2, ATTRIB_position.xy, 3.0);
+    varTex3 = mul(UNI_layer3, ATTRIB_position.xy, 4.0);
+    varTex4 = mul(UNI_layer4, ATTRIB_position.xy, 5.0);
+    gl_Position = ATTRIB_position;
+}