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author | Chet Haase <chet@google.com> | 2011-05-19 13:50:47 -0700 |
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committer | Chet Haase <chet@google.com> | 2011-05-19 16:39:37 -0700 |
commit | 44984ea0cb3702384d023b5f211deda3c4b0b656 (patch) | |
tree | 2ee6fb3780dc0e1cfd3b6d2837569bc5f8fe3a60 /libs/hwui | |
parent | 3a9e712aca65ac49e7155e98e5d6b815da76f94b (diff) | |
download | frameworks_base-44984ea0cb3702384d023b5f211deda3c4b0b656.zip frameworks_base-44984ea0cb3702384d023b5f211deda3c4b0b656.tar.gz frameworks_base-44984ea0cb3702384d023b5f211deda3c4b0b656.tar.bz2 |
Enable large font rendering with GPU acceleration
Change-Id: I7b022100fb0762613f9cf7753dbb0217e1e75f8d
Diffstat (limited to 'libs/hwui')
-rw-r--r-- | libs/hwui/FontRenderer.cpp | 39 | ||||
-rw-r--r-- | libs/hwui/FontRenderer.h | 2 |
2 files changed, 35 insertions, 6 deletions
diff --git a/libs/hwui/FontRenderer.cpp b/libs/hwui/FontRenderer.cpp index aa9b40e..1ca0a19 100644 --- a/libs/hwui/FontRenderer.cpp +++ b/libs/hwui/FontRenderer.cpp @@ -35,6 +35,9 @@ namespace uirenderer { #define DEFAULT_TEXT_CACHE_WIDTH 1024 #define DEFAULT_TEXT_CACHE_HEIGHT 256 +#define MAX_TEXT_CACHE_WIDTH 2048 +#define MAX_TEXT_CACHE_HEIGHT 2048 + /////////////////////////////////////////////////////////////////////////////// // Font /////////////////////////////////////////////////////////////////////////////// @@ -386,9 +389,17 @@ void FontRenderer::flushAllAndInvalidate() { bool FontRenderer::cacheBitmap(const SkGlyph& glyph, uint32_t* retOriginX, uint32_t* retOriginY) { // If the glyph is too tall, don't cache it if (glyph.fHeight > mCacheLines[mCacheLines.size() - 1]->mMaxHeight) { - LOGE("Font size to large to fit in cache. width, height = %i, %i", - (int) glyph.fWidth, (int) glyph.fHeight); - return false; + if (mCacheHeight < MAX_TEXT_CACHE_HEIGHT) { + // Default cache not large enough for large glyphs - resize cache to + // max size and try again + flushAllAndInvalidate(); + initTextTexture(true); + } + if (glyph.fHeight > mCacheLines[mCacheLines.size() - 1]->mMaxHeight) { + LOGE("Font size to large to fit in cache. width, height = %i, %i", + (int) glyph.fWidth, (int) glyph.fHeight); + return false; + } } // Now copy the bitmap into the cache texture @@ -446,16 +457,25 @@ bool FontRenderer::cacheBitmap(const SkGlyph& glyph, uint32_t* retOriginX, uint3 return true; } -void FontRenderer::initTextTexture() { +void FontRenderer::initTextTexture(bool largeFonts) { + mCacheLines.clear(); + if (largeFonts) { + mCacheWidth = MAX_TEXT_CACHE_WIDTH; + mCacheHeight = MAX_TEXT_CACHE_HEIGHT; + } + mTextTexture = new uint8_t[mCacheWidth * mCacheHeight]; memset(mTextTexture, 0, mCacheWidth * mCacheHeight * sizeof(uint8_t)); mUploadTexture = false; + if (mTextureId != 0) { + glDeleteTextures(1, &mTextureId); + } glGenTextures(1, &mTextureId); glBindTexture(GL_TEXTURE_2D, mTextureId); glPixelStorei(GL_UNPACK_ALIGNMENT, 1); - // Initialize texture dimentions + // Initialize texture dimensions glTexImage2D(GL_TEXTURE_2D, 0, GL_ALPHA, mCacheWidth, mCacheHeight, 0, GL_ALPHA, GL_UNSIGNED_BYTE, 0); @@ -480,6 +500,15 @@ void FontRenderer::initTextTexture() { nextLine += mCacheLines.top()->mMaxHeight; mCacheLines.push(new CacheTextureLine(mCacheWidth, 42, nextLine, 0)); nextLine += mCacheLines.top()->mMaxHeight; + if (largeFonts) { + int nextSize = 76; + // Make several new lines with increasing font sizes + while (nextSize < (int)(mCacheHeight - nextLine - (2 * nextSize))) { + mCacheLines.push(new CacheTextureLine(mCacheWidth, nextSize, nextLine, 0)); + nextLine += mCacheLines.top()->mMaxHeight; + nextSize += 50; + } + } mCacheLines.push(new CacheTextureLine(mCacheWidth, mCacheHeight - nextLine, nextLine, 0)); } diff --git a/libs/hwui/FontRenderer.h b/libs/hwui/FontRenderer.h index f685d5f..95f714f 100644 --- a/libs/hwui/FontRenderer.h +++ b/libs/hwui/FontRenderer.h @@ -229,7 +229,7 @@ protected: } }; - void initTextTexture(); + void initTextTexture(bool largeFonts = false); bool cacheBitmap(const SkGlyph& glyph, uint32_t *retOriginX, uint32_t *retOriginY); void flushAllAndInvalidate(); |