6 files changed, 218 insertions, 0 deletions
diff --git a/res/drawable-hdpi/night.jpg b/res/drawable-hdpi/night.jpg
new file mode 100644
index 000000000..559c7cb2d
--- /dev/null
+++ b/res/drawable-hdpi/night.jpg
diff --git a/res/drawable-hdpi/sky.jpg b/res/drawable-hdpi/sky.jpg
new file mode 100644
index 000000000..a12fe201c
--- /dev/null
+++ b/res/drawable-hdpi/sky.jpg
diff --git a/res/drawable-hdpi/sunrise.jpg b/res/drawable-hdpi/sunrise.jpg
new file mode 100644
index 000000000..db016b262
--- /dev/null
+++ b/res/drawable-hdpi/sunrise.jpg
diff --git a/res/drawable-hdpi/sunset.jpg b/res/drawable-hdpi/sunset.jpg
new file mode 100644
index 000000000..49bb0c631
--- /dev/null
+++ b/res/drawable-hdpi/sunset.jpg
diff --git a/res/raw/grass.c b/res/raw/grass.c
new file mode 100644
index 000000000..2962d0f97
--- /dev/null
+++ b/res/raw/grass.c
@@ -0,0 +1,212 @@
+// Copyright (C) 2009 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#pragma version(1)
+#pragma stateVertex(PVBackground)
+#pragma stateFragment(PFBackground)
+#pragma stateFragmentStore(PFSBackground)
+
+#define RSID_STATE 0
+#define RSID_FRAME_COUNT 0
+#define RSID_BLADES_COUNT 1
+#define RSID_WIDTH 2
+#define RSID_HEIGHT 3
+
+#define RSID_BLADES 1
+#define BLADE_STRUCT_FIELDS_COUNT 12
+#define BLADE_STRUCT_ANGLE 0
+#define BLADE_STRUCT_SIZE 1
+#define BLADE_STRUCT_XPOS 2
+#define BLADE_STRUCT_YPOS 3
+#define BLADE_STRUCT_OFFSET 4
+#define BLADE_STRUCT_SCALE 5
+#define BLADE_STRUCT_LENGTHX 6
+#define BLADE_STRUCT_LENGTHY 7
+#define BLADE_STRUCT_HARDNESS 8
+#define BLADE_STRUCT_H 9
+#define BLADE_STRUCT_S 10
+#define BLADE_STRUCT_B 11
+
+#define TESSELATION 2.0f
+
+#define MAX_BEND 0.09f
+
+#define MIDNIGHT 0.0f
+#define MORNING 0.375f
+#define AFTERNOON 0.6f
+#define DUSK 0.8f
+
+#define SECONDS_IN_DAY 24.0f * 3600.0f
+
+#define PI 3.1415926f
+
+#define REAL_TIME 0
+
+float time(int frameCount) {
+    if (REAL_TIME) {
+        return (hour() * 3600.0f + minute() * 60.0f + second()) / SECONDS_IN_DAY;
+    }
+    return (frameCount % 180) / 180.0f;
+}
+
+void alpha(float a) {
+    color(1.0f, 1.0f, 1.0f, a);
+}
+
+void drawNight(int width, int height) {
+    bindProgramFragment(NAMED_PFNight);
+    bindTexture(NAMED_PFNight, 0, NAMED_TNight);
+    drawQuadTexCoords(
+            0.0f, -32.0f, 0.0f,
+            0.0f, 1.0f,
+            width, -32.0f, 0.0f,
+            2.0f, 1.0f,
+            width, 1024.0f - 32.0f, 0.0f,
+            2.0f, 0.0f,
+            0.0f, 1024.0f - 32.0f, 0.0f,
+            0.0f, 0.0f);
+    bindProgramFragment(NAMED_PFBackground);
+}
+
+void drawSunrise(int width, int height) {
+    bindTexture(NAMED_PFBackground, 0, NAMED_TSunrise);
+    drawRect(0.0f, 0.0f, width, height, 0.0f);
+}
+
+void drawNoon(int width, int height) {
+    bindTexture(NAMED_PFBackground, 0, NAMED_TSky);
+    drawRect(0.0f, 0.0f, width, height, 0.0f);
+}
+
+void drawSunset(int width, int height) {
+    bindTexture(NAMED_PFBackground, 0, NAMED_TSunset);
+    drawRect(0.0f, 0.0f, width, height, 0.0f);
+}
+
+void drawBlade(int index, float now, int frameCount) {
+    float *bladeStruct = loadArrayF(RSID_BLADES, index);
+    float offset = bladeStruct[BLADE_STRUCT_OFFSET];
+    float scale = bladeStruct[BLADE_STRUCT_SCALE];
+    float angle = bladeStruct[BLADE_STRUCT_ANGLE];
+    float hardness = bladeStruct[BLADE_STRUCT_HARDNESS];
+    
+    float xpos = bladeStruct[BLADE_STRUCT_XPOS];
+    float ypos = bladeStruct[BLADE_STRUCT_YPOS];
+
+    float lengthX = bladeStruct[BLADE_STRUCT_LENGTHX];
+    float lengthY = bladeStruct[BLADE_STRUCT_LENGTHY];
+
+    int size = bladeStruct[BLADE_STRUCT_SIZE];
+
+    float h = bladeStruct[BLADE_STRUCT_H];
+    float s = bladeStruct[BLADE_STRUCT_S];
+    float b = bladeStruct[BLADE_STRUCT_B];
+
+    float newB = 1.0f;
+    if (now >= MIDNIGHT && now < MORNING) {
+        newB = now / MORNING;
+    }
+
+    if (now >= AFTERNOON && now < DUSK) {
+        newB = 1.0f - normf(AFTERNOON, DUSK, now);
+    }
+
+    if (now >= DUSK) {
+        newB = 0.0f;
+    }
+
+    hsb(h, s, lerpf(0, b, newB), 1.0f);
+
+    float newAngle = turbulencef2(xpos * 0.006f, frameCount * 0.006f, 4.0f) - 0.5f;
+    newAngle /= 2.0f;
+    angle = clampf(angle + (newAngle + offset - angle) * 0.15f, -MAX_BEND, MAX_BEND);
+
+    float currentAngle = PI / 2.0f;
+
+    float bottomX = xpos;
+    float bottomY = ypos;
+
+    int i = size * TESSELATION;
+    float lx = lengthX / TESSELATION;
+    float ly = lengthY / TESSELATION;
+    float ss = 4.0f / i + scale / TESSELATION;
+    float sh = 0.5f / TESSELATION;
+    float d = angle * hardness / TESSELATION;
+
+    for ( ; i > 0; i--) {
+        float topX = bottomX - cosf(currentAngle) * size * lx;
+        float topY = bottomY - sinf(currentAngle) * size * ly;
+        currentAngle += d;
+
+        float spi = (i - 1) * ss;
+        float si = i * ss;
+
+        drawQuad(topX + spi, topY, 0.0f,
+                 topX - spi, topY, 0.0f,
+                 bottomX - si, bottomY + sh, 0.0f,
+                 bottomX + si, bottomY + sh, 0.0f);
+
+        bottomX = topX;
+        bottomY = topY;
+    }
+
+    storeF(RSID_BLADES, index + BLADE_STRUCT_ANGLE, angle);
+}
+
+void drawBlades(float now, int frameCount) {
+    // For anti-aliasing
+    bindTexture(NAMED_PFBackground, 0, NAMED_TAa);
+
+    int bladesCount = loadI32(RSID_STATE, RSID_BLADES_COUNT);
+    int count = bladesCount * BLADE_STRUCT_FIELDS_COUNT;
+
+    int i = 0;
+    for ( ; i < count; i += BLADE_STRUCT_FIELDS_COUNT) {
+        drawBlade(i, now, frameCount);
+    }
+}
+
+int main(int launchID) {
+    int width = loadI32(RSID_STATE, RSID_WIDTH);
+    int height = loadI32(RSID_STATE, RSID_HEIGHT);
+
+    int frameCount = loadI32(RSID_STATE, RSID_FRAME_COUNT);
+    float now = time(frameCount);
+    alpha(1.0f);
+
+    if (now >= MIDNIGHT && now < MORNING) {
+        drawNight(width, height);
+        alpha(normf(MIDNIGHT, MORNING, now));
+        drawSunrise(width, height);
+    } else if (now >= MORNING && now < AFTERNOON) {
+        drawSunrise(width, height);
+        alpha(normf(MORNING, AFTERNOON, now));
+        drawNoon(width, height);
+    } else if (now >= AFTERNOON && now < DUSK) {
+        drawNoon(width, height);
+        alpha(normf(AFTERNOON, DUSK, now));
+        drawSunset(width, height);
+    } else if (now >= DUSK) {
+        drawNight(width, height);
+        alpha(1.0f - normf(DUSK, 1.0f, now));
+        drawSunset(width, height);
+    }
+
+    drawBlades(now, frameCount);
+
+    frameCount++;
+    storeI32(RSID_STATE, RSID_FRAME_COUNT, frameCount);
+
+    return 1;
+}
diff --git a/res/values/strings.xml b/res/values/strings.xml
index f286fa11e..b792d36a6 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -126,4 +126,10 @@
 
     <!-- Text to show user in place of a gadget when we can't display it properly -->
     <string name="gadget_error_text">Problem loading widget</string>
+    
+    <!-- Wallpapers: -->
+    <skip />    
+    
+    <!-- Wallpaper showing grass and the sky -->
+    <string name="wallpaper_grass">Grass</string>
 </resources>