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Generate the SurfaceFlinger shader cache on initialization

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Blobcache is not yet enabled for surfaceflinger (as it should be).
As a temporary workaround, generate all needed shaders during
surfaceflinger initialization instead of doing the compilation
on-demand during ui transitions.

Change-Id: I14455b20a3f85f177d85c9c8b76d8ccc35379b39
This commit is contained in:
Riley Andrews 2014-09-29 13:29:40 -07:00
parent db57cfbd6f
commit a51fafc4d8
2 changed files with 34 additions and 1 deletions
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33
services/surfaceflinger/RenderEngine/ProgramCache.cpp
View File

@ -77,13 +77,44 @@ Formatter& dedent(Formatter& f) {
ANDROID_SINGLETON_STATIC_INSTANCE(ProgramCache)
ProgramCache::ProgramCache() {
// Until surfaceflinger has a dependable blob cache on the filesystem,
// generate shaders on initialization so as to avoid jank.
primeCache();
}
ProgramCache::~ProgramCache() {
}
void ProgramCache::primeCache() {
uint32_t shaderCount = 0;
uint32_t keyMask = Key::BLEND_MASK | Key::OPACITY_MASK |
Key::PLANE_ALPHA_MASK | Key::TEXTURE_MASK;
// Prime the cache for all combinations of the above masks,
// leaving off the experimental color matrix mask options.
nsecs_t timeBefore = systemTime();
for (uint32_t keyVal = 0; keyVal <= keyMask; keyVal++) {
Key shaderKey;
shaderKey.set(keyMask, keyVal);
uint32_t tex = shaderKey.getTextureTarget();
if (tex != Key::TEXTURE_OFF &&
tex != Key::TEXTURE_EXT &&
tex != Key::TEXTURE_2D) {
continue;
}
Program* program = mCache.valueFor(shaderKey);
if (program == NULL) {
program = generateProgram(shaderKey);
mCache.add(shaderKey, program);
shaderCount++;
}
}
nsecs_t timeAfter = systemTime();
float compileTimeMs = static_cast<float>(timeAfter - timeBefore) / 1.0E6;
ALOGD("shader cache generated - %u shaders in %f ms\n", shaderCount, compileTimeMs);
}
ProgramCache::Key ProgramCache::computeKey(const Description& description) {
Key needs;
needs.set(Key::TEXTURE_MASK,

2
services/surfaceflinger/RenderEngine/ProgramCache.h
View File

@ -112,6 +112,8 @@ public:
void useProgram(const Description& description);
private:
// Generate shaders to populate the cache
void primeCache();
// compute a cache Key from a Description
static Key computeKey(const Description& description);
// generates a program from the Key