---
docs/envvars.html | 3 +++
src/mesa/main/context.c | 3 +++
2 files changed, 6 insertions(+)
diff --git a/docs/envvars.html b/docs/envvars.html
index 6537365..0f321da 100644
--- a/docs/envvars.html
+++ b/docs/envvars.html
@@ -39,20 +39,23 @@ sometimes be useful for debugging end-user issues.
<h2>Core Mesa environment variables</h2>
<ul>
<li>MESA_NO_ASM - if set, disables all assembly language optimizations
<li>MESA_NO_MMX - if set, disables Intel MMX optimizations
<li>MESA_NO_3DNOW - if set, disables AMD 3DNow! optimizations
<li>MESA_NO_SSE - if set, disables Intel SSE optimizations
+<li>MESA_NO_ERROR - if set error checking is disabled as per KHR_no_error.
+ This will result in undefined behaviour for invalid use of the api, but
+ can reduce CPU use for apps that are know to be error free.</li>
<li>MESA_DEBUG - if set, error messages are printed to stderr. For example,
if the application generates a GL_INVALID_ENUM error, a corresponding error
message indicating where the error occurred, and possibly why, will be
printed to stderr.<br>
For release builds, MESA_DEBUG defaults to off (no debug output).
MESA_DEBUG accepts the following comma-separated list of named
flags, which adds extra behaviour to just set MESA_DEBUG=1:
<ul>
diff --git a/src/mesa/main/context.c b/src/mesa/main/context.c
index 8876ca2..33bdbd7 100644
--- a/src/mesa/main/context.c
+++ b/src/mesa/main/context.c
@@ -1201,20 +1201,23 @@ _mesa_initialize_context(struct gl_context *ctx,
shared = _mesa_alloc_shared_state(ctx);
if (!shared)
return GL_FALSE;
}
_mesa_reference_shared_state(ctx, &ctx->Shared, shared);
if (!init_attrib_groups( ctx ))
goto fail;
+ if (getenv("MESA_NO_ERROR"))
+ ctx->Const.ContextFlags |= GL_CONTEXT_FLAG_NO_ERROR_BIT_KHR;
+
/* setup the API dispatch tables with all nop functions */
ctx->OutsideBeginEnd = _mesa_alloc_dispatch_table();
if (!ctx->OutsideBeginEnd)
goto fail;
ctx->Exec = ctx->OutsideBeginEnd;
ctx->CurrentClientDispatch = ctx->CurrentServerDispatch =
ctx->OutsideBeginEnd;
ctx->FragmentProgram._MaintainTexEnvProgram
= (getenv("MESA_TEX_PROG") != NULL);
--
2.9.3
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