SkGLTextCache::Strike::Strike(Strike* next, int width, int height) {
fStrikeWidth = SkNextPow2(SkMax32(kMinStrikeWidth, width));
fStrikeHeight = SkNextPow2(height);
fGlyphCount = 0;
fNextFreeOffsetX = 0;
fNext = next;
fStrikeWidthShift = SkNextLog2(fStrikeWidth);
fStrikeHeightShift = SkNextLog2(fStrikeHeight);
if (next) {
SkASSERT(next->fStrikeHeight == fStrikeHeight);
}
// create an empty texture to receive glyphs
fTexName = 0;
glGenTextures(1, &fTexName);
glBindTexture(GL_TEXTURE_2D, fTexName);
glTexImage2D(GL_TEXTURE_2D, 0, gTextTextureFormat,
fStrikeWidth, fStrikeHeight, 0,
gTextTextureFormat, gTextTextureType, NULL);
SK_glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
SK_glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
SK_glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
SK_glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
}
void SkGL::SetTexParamsClamp(bool doFilter) {
GLenum filter = doFilter ? GL_LINEAR : GL_NEAREST;
SK_glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, filter);
SK_glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, filter);
SK_glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
SK_glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
}
void SkGL::SetTexParams(bool doFilter,
SkShader::TileMode tx, SkShader::TileMode ty) {
SkASSERT((unsigned)tx < SK_ARRAY_COUNT(gTileMode2GLWrap));
SkASSERT((unsigned)ty < SK_ARRAY_COUNT(gTileMode2GLWrap));
GLenum filter = doFilter ? GL_LINEAR : GL_NEAREST;
SK_glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, filter);
SK_glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, filter);
SK_glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, gTileMode2GLWrap[tx]);
SK_glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, gTileMode2GLWrap[ty]);
}
