Android/frameworks_base
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Make sure we never bind to texture #0

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Bug #7195815

Change-Id: Ibec4b2aa4c580419eb5eb61adae6c9c960694d0c
This commit is contained in:
Romain Guy
2012-09-23 14:45:31 -07:00
parent 8e586f61dd
commit 574cf6070d
1 changed files with 23 additions and 25 deletions
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48
libs/hwui/font/CacheTexture.h
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@@ -77,12 +77,7 @@ public:
}
~CacheTexture() {
if (mTexture) {
delete[] mTexture;
}
if (mTextureId) {
glDeleteTextures(1, &mTextureId);
}
releaseTexture();
reset();
}
@@ -105,38 +100,40 @@ public:
void releaseTexture() {
if (mTexture) {
glDeleteTextures(1, &mTextureId);
delete[] mTexture;
mTexture = NULL;
}
if (mTextureId) {
glDeleteTextures(1, &mTextureId);
mTextureId = 0;
}
mDirty = false;
}
/**
* This method assumes that the proper texture unit is active.
*/
void allocateTexture() {
int width = mWidth;
int height = mHeight;
mTexture = new uint8_t[width * height];
if (!mTexture) {
mTexture = new uint8_t[mWidth * mHeight];
}
if (!mTextureId) {
glGenTextures(1, &mTextureId);
glBindTexture(GL_TEXTURE_2D, mTextureId);
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
// Initialize texture dimensions
glTexImage2D(GL_TEXTURE_2D, 0, GL_ALPHA, mWidth, mHeight, 0,
GL_ALPHA, GL_UNSIGNED_BYTE, 0);
const GLenum filtering = getLinearFiltering() ? GL_LINEAR : GL_NEAREST;
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, filtering);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, filtering);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
}
glBindTexture(GL_TEXTURE_2D, mTextureId);
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
// Initialize texture dimensions
glTexImage2D(GL_TEXTURE_2D, 0, GL_ALPHA, width, height, 0,
GL_ALPHA, GL_UNSIGNED_BYTE, 0);
const GLenum filtering = getLinearFiltering() ? GL_LINEAR : GL_NEAREST;
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, filtering);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, filtering);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
}
bool fitBitmap(const SkGlyph& glyph, uint32_t* retOriginX, uint32_t* retOriginY);
@@ -153,7 +150,8 @@ public:
return mTexture;
}
inline GLuint getTextureId() const {
GLuint getTextureId() {
allocateTexture();
return mTextureId;
}