Merge "Add hooks for drawBitmap()."

1 files changed, 86 insertions, 0 deletions

diff --git a/libs/hwui/TextureCache.cpp b/libs/hwui/TextureCache.cpp
new file mode 100644
index 000000000000..b4a57eef2caf
--- /dev/null
+++ b/libs/hwui/TextureCache.cpp
@@ -0,0 +1,86 @@
+/*
+ * Copyright (C) 2010 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.
+ */
+
+#include <GLES2/gl2.h>
+
+#include "TextureCache.h"
+
+namespace android {
+namespace uirenderer {
+
+TextureCache::TextureCache(unsigned int maxEntries): mCache(maxEntries) {
+    mCache.setOnEntryRemovedListener(this);
+}
+
+TextureCache::~TextureCache() {
+    mCache.clear();
+}
+
+void TextureCache::operator()(SkBitmap* key, Texture* value) {
+    LOGD("Entry removed");
+    if (value) {
+        glDeleteTextures(1, &value->id);
+        delete value;
+    }
+}
+
+Texture* TextureCache::get(SkBitmap* bitmap) {
+    Texture* texture = mCache.get(bitmap);
+    if (!texture) {
+        texture = generateTexture(bitmap);
+        mCache.put(bitmap, texture);
+    }
+    return texture;
+}
+
+Texture* TextureCache::remove(SkBitmap* bitmap) {
+    return mCache.remove(bitmap);
+}
+
+void TextureCache::clear() {
+    mCache.clear();
+}
+
+Texture* TextureCache::generateTexture(SkBitmap* bitmap) {
+    Texture* texture = new Texture;
+
+    texture->width = bitmap->width();
+    texture->height = bitmap->height();
+
+    glGenTextures(1, &texture->id);
+    glBindTexture(GL_TEXTURE_2D, texture->id);
+
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+
+    switch (bitmap->getConfig()) {
+    case SkBitmap::kRGB_565_Config:
+        glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB565, texture->width, texture->height,
+                0, GL_RGB565, GL_UNSIGNED_SHORT_5_6_5, bitmap->getPixels());
+        break;
+    case SkBitmap::kARGB_8888_Config:
+        glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, texture->width, texture->height,
+                0, GL_RGBA, GL_UNSIGNED_BYTE, bitmap->getPixels());
+        break;
+    }
+
+    return texture;
+}
+
+}; // namespace uirenderer
+}; // namespace android