For the series:
Acked-by: Marek Olšák <marek.ol...@amd.com>
Does this fix the crash when GLSL gets a cache hit and st/mesa gets a
cache miss?
Marek
On Thu, Mar 9, 2017 at 1:42 PM, Timothy Arceri <tarc...@itsqueeze.com> wrote:
> On 09/03/17 22:58, Timothy Arceri wrote:
>>
>> Because we optimistically skip compiling shaders if we have seen them
>> before we may need to compile them later at link time if they haven't
>> yet been use in a specific combination to create a program.
>>
>> Rather than always recompiling we take advantage of the
>> gl_compile_status enum introduced in the previous patch to only
>> compile when we have previously skipped compilation.
>>
>> This should help with regressions in app start-up times on cold cache
>> runs, compared with no cache.
>
>
> Here are the stats:
>
> Deus Ex: Mankind Divided start-up times:
>
> cache disabled: ~3m15s
> cold cache master: ~4m23s
> cold cache with this patch: ~3m33s
>
>
>> ---
>> src/compiler/glsl/glsl_parser_extras.cpp | 7 +++++++
>> 1 file changed, 7 insertions(+)
>>
>> diff --git a/src/compiler/glsl/glsl_parser_extras.cpp
>> b/src/compiler/glsl/glsl_parser_extras.cpp
>> index 59114a7..776636c 100644
>> --- a/src/compiler/glsl/glsl_parser_extras.cpp
>> +++ b/src/compiler/glsl/glsl_parser_extras.cpp
>> @@ -1945,20 +1945,27 @@ _mesa_glsl_compile_shader(struct gl_context *ctx,
>> struct gl_shader *shader,
>> if (ctx->_Shader->Flags & GLSL_CACHE_INFO) {
>> fprintf(stderr, "deferring compile of shader: %s\n",
>> _mesa_sha1_format(buf, shader->sha1));
>> }
>> shader->CompileStatus = compile_skipped;
>>
>> free((void *)shader->FallbackSource);
>> shader->FallbackSource = NULL;
>> return;
>> }
>> + } else {
>> + /* We should only ever end up here if a re-compile has been forced
>> by a
>> + * shader cache miss. In which case we can skip the compile if its
>> + * already be done by a previous fallback or the initial compile
>> call.
>> + */
>> + if (shader->CompileStatus == compile_success)
>> + return;
>> }
>>
>> if (!state->error) {
>> _mesa_glsl_lexer_ctor(state, source);
>> _mesa_glsl_parse(state);
>> _mesa_glsl_lexer_dtor(state);
>> do_late_parsing_checks(state);
>> }
>>
>> if (dump_ast) {
>>
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