glmark2: add upstream patch to not care about stencil config

The upstream project already patched this, but considering this package
is currently locked to the latest tag, I'll add it here.

This fixes an issue with stencil configs being scored unnecessarily low.
It also addresses a problem when the target config is below 0.

Signed-off-by: Randolph Sapp <rs@ti.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

2 files changed, 104 insertions, 0 deletions

diff --git a/meta-oe/recipes-benchmark/glmark2/files/0003-GLVisualConfig-By-default-don-t-care-about-the-stenc.patch b/meta-oe/recipes-benchmark/glmark2/files/0003-GLVisualConfig-By-default-don-t-care-about-the-stenc.patch
new file mode 100644
index 0000000000..dc47af83e7
--- /dev/null
+++ b/meta-oe/recipes-benchmark/glmark2/files/0003-GLVisualConfig-By-default-don-t-care-about-the-stenc.patch
@@ -0,0 +1,103 @@
+From b59ec731c8c7e084b289e4ea92938faaebcc389d Mon Sep 17 00:00:00 2001
+From: Alexandros Frantzis <alexandros.frantzis@collabora.com>
+Date: Wed, 1 Nov 2023 13:43:00 +0200
+Subject: [PATCH] GLVisualConfig: By default don't care about the stencil
+ config component
+
+Our benchmarks don't use a stencil buffer, but its presence doesn't hurt
+either, so don't mark configs that have one as unacceptable. Our scoring
+still favors configs without one, unless the user explicitly specifies
+otherwise with --visual-config.
+
+Upstream-Status: Backport [https://github.com/glmark2/glmark2/commit/5f23d540342ba69e12afeb6a1ac4f6fd36747975]
+---
+ doc/glmark2.1.in         | 2 +-
+ src/gl-visual-config.cpp | 9 ++++++---
+ src/gl-visual-config.h   | 2 +-
+ src/options.cpp          | 6 +++---
+ 4 files changed, 11 insertions(+), 8 deletions(-)
+
+diff --git a/doc/glmark2.1.in b/doc/glmark2.1.in
+index 015ba20..1f4a047 100644
+--- a/doc/glmark2.1.in
++++ b/doc/glmark2.1.in
+@@ -38,7 +38,7 @@ Render to an off-screen surface
+ The visual configuration to use for the rendering target:
+ \'id=ID:red=R:green=G:blue=B:alpha=A:buffer=BUF:stencil=STENCIL:samples=SAMPLES'.
+ The parameters may be defined in any order, and any omitted parameters assume a
+-default value of '0' (id, stencil, samples) or '1' (red, green, blue, alpha, buffer).
++default value of '0' (id, samples), -1 (stencil) or '1' (red, green, blue, alpha, buffer).
+ If 'id' is set to a non-zero value, all other parameters are ignored
+ .TP
+ \fB\-\-reuse\-context\fR
+diff --git a/src/gl-visual-config.cpp b/src/gl-visual-config.cpp
+index de92f93..665f53a 100644
+--- a/src/gl-visual-config.cpp
++++ b/src/gl-visual-config.cpp
+@@ -26,7 +26,7 @@
+ #include <vector>
+ 
+ GLVisualConfig::GLVisualConfig(const std::string &s) :
+-    id(0), red(1), green(1), blue(1), alpha(1), depth(1), stencil(0), buffer(1), samples(0)
++    GLVisualConfig()
+ {
+     std::vector<std::string> elems;
+ 
+@@ -85,7 +85,7 @@ GLVisualConfig::match_score(const GLVisualConfig &target) const
+     score += score_component(blue, target.blue, 4);
+     score += score_component(alpha, target.alpha, 4);
+     score += score_component(depth, target.depth, 1);
+-    score += score_component(stencil, target.stencil, 0);
++    score += score_component(stencil, target.stencil, 1);
+     score += score_component(buffer, target.buffer, 1);
+     score += score_component(samples, target.samples, -1);
+ 
+@@ -135,11 +135,14 @@ GLVisualConfig::score_component(int component, int target, int scale) const
+          * score for all components ranges from [0,MAXIMUM_COMPONENT_SCORE).
+          * If scale > 0, we reward the largest positive difference from target,
+          * otherwise the smallest positive difference from target.
++         * We also reward the smallest positive difference from the target,
++         * if the target < 0, i.e., we don't care about this value.
+          */
+         int diff = std::abs(scale) * (component - target);
+         if (diff > 0)
+         {
+-            score = scale < 0 ? MAXIMUM_COMPONENT_SCORE - diff : diff;
++            score = (scale < 0 || target < 0) ?
++                    MAXIMUM_COMPONENT_SCORE - diff : diff;
+             score = std::min(MAXIMUM_COMPONENT_SCORE, score);
+             score = std::max(0, score);
+         }
+diff --git a/src/gl-visual-config.h b/src/gl-visual-config.h
+index b28473f..013ce14 100644
+--- a/src/gl-visual-config.h
++++ b/src/gl-visual-config.h
+@@ -31,7 +31,7 @@ class GLVisualConfig
+ {
+ public:
+     GLVisualConfig():
+-        id(0), red(1), green(1), blue(1), alpha(1), depth(1), stencil(0), buffer(1), samples(0) {}
++        id(0), red(1), green(1), blue(1), alpha(1), depth(1), stencil(-1), buffer(1), samples(0) {}
+     GLVisualConfig(const std::string &s);
+ 
+     /**
+diff --git a/src/options.cpp b/src/options.cpp
+index 8d1ec16..3a31d3d 100644
+--- a/src/options.cpp
++++ b/src/options.cpp
+@@ -213,9 +213,9 @@ Options::print_help()
+            "                         target: 'id=ID:red=R:green=G:blue=B:alpha=A:buffer=BUF:\n"
+            "                         stencil=STENCIL:samples=SAMPLES'. The parameters may be\n"
+            "                         defined in any order, and any omitted parameters assume a\n"
+-           "                         default value of '0' (id, stencil, samples) or '1' (red,\n"
+-           "                         green, blue, alpha, buffer). If 'id' is set to a non-zero\n"
+-           "                         value, all other parameters are ignored\n"
++           "                         default value of '0' (id, samples), '-1' (stencil) or\n"
++           "                         '1' (red, green, blue, alpha, buffer). If 'id' is set to\n"
++           "                         a non-zero value, all other parameters are ignored\n"
+            "      --reuse-context    Use a single context for all scenes\n"
+            "                         (by default, each scene gets its own context)\n"
+            "  -s, --size WxH         Size of the output window (default: 800x600)\n"
+-- 
+2.44.0
+
diff --git a/meta-oe/recipes-benchmark/glmark2/glmark2_git.bb b/meta-oe/recipes-benchmark/glmark2/glmark2_git.bb
index a2d5b152f2..0b61d6ed62 100644
--- a/meta-oe/recipes-benchmark/glmark2/glmark2_git.bb
+++ b/meta-oe/recipes-benchmark/glmark2/glmark2_git.bb
@@ -17,6 +17,7 @@ SRC_URI = " \
     git://github.com/glmark2/glmark2.git;protocol=https;branch=master \
     file://0001-fix-dispmanx-build.patch \
     file://0002-run-dispmanx-fullscreen.patch \
+    file://0003-GLVisualConfig-By-default-don-t-care-about-the-stenc.patch \
 "
 SRCREV = "42e3d8fe3aa88743ef90348138f643f7b04a9237"