From: Chad Versace <chad.vers...@intel.com>
Valid values for INTEL_HIZ are "0" or "1".
Overriding HiZ is useful for performance profiling and testing.
Signed-off-by: Chad Versace <chad.vers...@intel.com>
---
src/mesa/drivers/dri/intel/intel_context.c | 25 +++++++++++++++++++++++++
1 files changed, 25 insertions(+), 0 deletions(-)
diff --git a/src/mesa/drivers/dri/intel/intel_context.c
b/src/mesa/drivers/dri/intel/intel_context.c
index b1907f5..d91a300 100644
--- a/src/mesa/drivers/dri/intel/intel_context.c
+++ b/src/mesa/drivers/dri/intel/intel_context.c
@@ -609,6 +609,29 @@ intelInitDriverFunctions(struct dd_function_table
*functions)
intel_init_syncobj_functions(functions);
}
+/**
+ * \brief Override intel->has_hiz with environment variable INTEL_HIZ.
+ *
+ * Valid values for INTEL_HIZ are "0" and "1". If an invalid valid value is
+ * encountered, a warning is emitted and INTEL_HIZ is ignored.
+ */
+static void
+intel_override_hiz(struct intel_context *intel)
+{
+ const char *s = getenv("INTEL_HIZ");
+ if (!s) {
+ return;
+ } else if (!strncmp("0", s, 2)) {
+ intel->has_hiz = false;
+ } else if (!strncmp("1", s, 2)) {
+ intel->has_hiz = true;
+ } else {
+ _mesa_warning(&intel->ctx,
+ "env variable INTEL_HIZ=\"%s\" has invalid value and "
+ "is ignored", s);
+ }
+}
+
GLboolean
intelInitContext(struct intel_context *intel,
@@ -677,6 +700,8 @@ intelInitContext(struct intel_context *intel,
}
}
+ intel_override_hiz(intel);
+
memset(&ctx->TextureFormatSupported, 0,
sizeof(ctx->TextureFormatSupported));
ctx->TextureFormatSupported[MESA_FORMAT_ARGB8888] = GL_TRUE;
--
1.7.5
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