Program* ProgramCache::get(const ProgramDescription& description) {
programid key = description.key();
ssize_t index = mCache.indexOfKey(key);
Program* program = NULL;
if (index < 0) {
description.log("Could not find program");
program = generateProgram(description, key);
mCache.add(key, program);
} else {
program = mCache.valueAt(index);
}
return program;
}
Program* ProgramCache::get(const ProgramDescription& description) {
programid key = description.key();
if (key == (PROGRAM_KEY_TEXTURE | PROGRAM_KEY_A8_TEXTURE)) {
// program for A8, unmodulated, texture w/o shader (black text/path textures) is equivalent
// to standard texture program (bitmaps, patches). Consider them equivalent.
key = PROGRAM_KEY_TEXTURE;
}
ssize_t index = mCache.indexOfKey(key);
Program* program = NULL;
if (index < 0) {
description.log("Could not find program");
program = generateProgram(description, key);
mCache.add(key, program);
} else {
program = mCache.valueAt(index);
}
return program;
}
void ProgramCache::useProgram(const Description& description) {
// generate the key for the shader based on the description
Key needs(computeKey(description));
// look-up the program in the cache
Program* program = mCache.valueFor(needs);
if (program == NULL) {
// we didn't find our program, so generate one...
nsecs_t time = -systemTime();
program = generateProgram(needs);
mCache.add(needs, program);
time += systemTime();
//ALOGD(">>> generated new program: needs=%08X, time=%u ms (%d programs)",
// needs.mNeeds, uint32_t(ns2ms(time)), mCache.size());
}
// here we have a suitable program for this description
if (program->isValid()) {
program->use();
program->setUniforms(description);
}
}
