arb_texture_rg: Add execution tests for shadow2D()

Signed-off-by: Chad Versace <chad.versace@intel.com>

6 files changed, 127 insertions, 0 deletions

diff --git a/tests/all.tests b/tests/all.tests
index cef2af2cb..7a37b4ea6 100644
--- a/tests/all.tests
+++ b/tests/all.tests
@@ -814,6 +814,9 @@ spec['EXT_texture_integer'] = ext_texture_integer
 
 arb_texture_rg = Group()
 spec['ARB_texture_rg'] = arb_texture_rg
+add_shader_test_dir(arb_texture_rg,
+                    os.path.dirname(__file__) + '/spec/arb_texture_rg/execution',
+                    recursive=True)
 add_fbo_generatemipmap_extension(arb_texture_rg, 'GL_ARB_texture_rg', 'fbo-generatemipmap-formats')
 add_fbo_generatemipmap_extension(arb_texture_rg, 'GL_ARB_texture_rg-float', 'fbo-generatemipmap-formats-float')
 add_fbo_clear_extension(arb_texture_rg, 'GL_ARB_texture_rg', 'fbo-clear-formats')
diff --git a/tests/spec/arb_texture_rg/execution/fs-shadow2d-red-01.shader_test b/tests/spec/arb_texture_rg/execution/fs-shadow2d-red-01.shader_test
new file mode 100644
index 000000000..4124634e6
--- /dev/null
+++ b/tests/spec/arb_texture_rg/execution/fs-shadow2d-red-01.shader_test
@@ -0,0 +1,36 @@
+# [description]
+# Test shadow2D(sampler2DShadow, vec3) with
+#   - depth texture mode = red
+#   - texture compare func = greater
+#
+# From the ARB_texture_rg spec:
+#     Texture Base        Texture source color
+#     Internal Format     C_s             A_s
+#     ---------------     -------------   ------
+#     RED                 (R_t, 0, 0)     1
+#
+
+[require]
+GLSL >= 1.10
+GL_ARB_texture_rg
+
+[vertex shader file]
+fs-shadow2d.vert
+
+[fragment shader file]
+fs-shadow2d.frag
+
+[test]
+uniform int tex 0
+texture shadow 0 (32, 32)
+texparameter depth_mode red
+texparameter compare_func greater
+draw rect -1 -1 2 2
+
+# depth comparison pass
+relative probe rgba (0.0, 0.1) (1.0, 0.0, 0.0, 1.0)
+relative probe rgba (0.9, 1.0) (1.0, 0.0, 0.0, 1.0)
+
+# depth comparison fail
+relative probe rgba (0.1, 0.0) (0.0, 0.0, 0.0, 1.0)
+relative probe rgba (1.0, 0.9) (0.0, 0.0, 0.0, 1.0)
diff --git a/tests/spec/arb_texture_rg/execution/fs-shadow2d-red-02.shader_test b/tests/spec/arb_texture_rg/execution/fs-shadow2d-red-02.shader_test
new file mode 100644
index 000000000..e80a83452
--- /dev/null
+++ b/tests/spec/arb_texture_rg/execution/fs-shadow2d-red-02.shader_test
@@ -0,0 +1,36 @@
+# [description]
+# Test shadow2D(sampler2DShadow, vec3) with
+#   - depth texture mode = red
+#   - texture compare func = always
+#
+# From the ARB_texture_rg spec:
+#     Texture Base        Texture source color
+#     Internal Format     C_s             A_s
+#     ---------------     -------------   ------
+#     RED                 (R_t, 0, 0)     1
+#
+
+[require]
+GLSL >= 1.10
+GL_ARB_texture_rg
+
+[vertex shader file]
+fs-shadow2d.vert
+
+[fragment shader file]
+fs-shadow2d.frag
+
+[test]
+uniform int tex 0
+texture shadow 0 (32, 32)
+texparameter depth_mode red
+texparameter compare_func always
+draw rect -1 -1 2 2
+
+# depth comparison pass
+relative probe rgba (0.0, 0.1) (1.0, 0.0, 0.0, 1.0)
+relative probe rgba (0.9, 1.0) (1.0, 0.0, 0.0, 1.0)
+
+# depth comparison fail
+relative probe rgba (0.1, 0.0) (1.0, 0.0, 0.0, 1.0)
+relative probe rgba (1.0, 0.9) (1.0, 0.0, 0.0, 1.0)
diff --git a/tests/spec/arb_texture_rg/execution/fs-shadow2d-red-03.shader_test b/tests/spec/arb_texture_rg/execution/fs-shadow2d-red-03.shader_test
new file mode 100644
index 000000000..37344132b
--- /dev/null
+++ b/tests/spec/arb_texture_rg/execution/fs-shadow2d-red-03.shader_test
@@ -0,0 +1,36 @@
+# [description]
+# Test shadow2D(sampler2DShadow, vec3) with
+#   - depth texture mode = red
+#   - texture compare func = never
+#
+# From the ARB_texture_rg spec:
+#     Texture Base        Texture source color
+#     Internal Format     C_s             A_s
+#     ---------------     -------------   ------
+#     RED                 (R_t, 0, 0)     1
+#
+
+[require]
+GLSL >= 1.10
+GL_ARB_texture_rg
+
+[vertex shader file]
+fs-shadow2d.vert
+
+[fragment shader file]
+fs-shadow2d.frag
+
+[test]
+uniform int tex 0
+texture shadow 0 (32, 32)
+texparameter depth_mode red
+texparameter compare_func never
+draw rect -1 -1 2 2
+
+# depth comparison pass
+relative probe rgba (0.0, 0.1) (0.0, 0.0, 0.0, 1.0)
+relative probe rgba (0.9, 1.0) (0.0, 0.0, 0.0, 1.0)
+
+# depth comparison fail
+relative probe rgba (0.1, 0.0) (0.0, 0.0, 0.0, 1.0)
+relative probe rgba (1.0, 0.9) (0.0, 0.0, 0.0, 1.0)
diff --git a/tests/spec/arb_texture_rg/execution/fs-shadow2d.frag b/tests/spec/arb_texture_rg/execution/fs-shadow2d.frag
new file mode 100644
index 000000000..765f648d2
--- /dev/null
+++ b/tests/spec/arb_texture_rg/execution/fs-shadow2d.frag
@@ -0,0 +1,8 @@
+#version 110
+
+uniform sampler2DShadow tex;
+varying vec4 tex_coord;
+
+void main() {
+	gl_FragColor = shadow2D(tex, tex_coord.xyy);
+}
diff --git a/tests/spec/arb_texture_rg/execution/fs-shadow2d.vert b/tests/spec/arb_texture_rg/execution/fs-shadow2d.vert
new file mode 100644
index 000000000..426e7b791
--- /dev/null
+++ b/tests/spec/arb_texture_rg/execution/fs-shadow2d.vert
@@ -0,0 +1,8 @@
+#version 110
+
+varying vec4 tex_coord;
+
+void main() {
+    gl_Position = gl_Vertex;
+	tex_coord = (gl_Vertex + 1.0) / 2.0;
+}