[Piglit] [PATCH 4/8] arb_texture_multisample: new test for teximage state

[Chris Forbes]

This tests that the new teximage state added in ARB_texture_multisample
exists and has correct defaults for non-multisample textures:

    - GL_TEXTURE_SAMPLES = 0
    - GL_TEXTURE_FIXED_SAMPLE_LOCATIONS = false

Signed-off-by: Chris Forbes <chrisf at ijw.co.nz>
---
 tests/all.tests                                    |  1 +
 .../spec/arb_texture_multisample/CMakeLists.gl.txt |  1 +
 tests/spec/arb_texture_multisample/texstate.c      | 58 ++++++++++++++++++++++
 3 files changed, 60 insertions(+)
 create mode 100644 tests/spec/arb_texture_multisample/texstate.c

diff --git a/tests/all.tests b/tests/all.tests
index 379964f..9963e46 100644
--- a/tests/all.tests
+++ b/tests/all.tests
@@ -845,6 +845,7 @@ arb_texture_multisample = Group()
 spec['ARB_texture_multisample'] = arb_texture_multisample
 add_concurrent_test(arb_texture_multisample, 'arb_texture_multisample-minmax')
 add_concurrent_test(arb_texture_multisample, 'arb_texture_multisample-fb-completeness')
+add_concurrent_test(arb_texture_multisample, 'arb_texture_multisample-texstate')
 
 # Group AMD_shader_stencil_export
 spec['AMD_shader_stencil_export'] = Group()
diff --git a/tests/spec/arb_texture_multisample/CMakeLists.gl.txt b/tests/spec/arb_texture_multisample/CMakeLists.gl.txt
index d793256..d4cd51f 100644
--- a/tests/spec/arb_texture_multisample/CMakeLists.gl.txt
+++ b/tests/spec/arb_texture_multisample/CMakeLists.gl.txt
@@ -12,5 +12,6 @@ link_libraries (
 
 piglit_add_executable (arb_texture_multisample-minmax minmax.c)
 piglit_add_executable (arb_texture_multisample-fb-completeness fb-completeness.c)
+piglit_add_executable (arb_texture_multisample-texstate texstate.c)
 
 # vim: ft=cmake:
diff --git a/tests/spec/arb_texture_multisample/texstate.c b/tests/spec/arb_texture_multisample/texstate.c
new file mode 100644
index 0000000..37c111e
--- /dev/null
+++ b/tests/spec/arb_texture_multisample/texstate.c
@@ -0,0 +1,58 @@
+#include "piglit-util-gl-common.h"
+
+PIGLIT_GL_TEST_CONFIG_BEGIN
+
+    config.supports_gl_compat_version = 30;
+
+    config.window_width = 10;
+    config.window_height = 10;
+    config.window_visual = PIGLIT_GL_VISUAL_RGB;
+
+PIGLIT_GL_TEST_CONFIG_END
+
+enum piglit_result
+piglit_display(void)
+{
+    return PIGLIT_FAIL;
+}
+
+static bool
+check_texlevelparameter_int(GLuint target, GLuint level,
+        char const *name, GLuint pname, GLint expected_value)
+{
+    GLint actual_value;
+    glGetTexLevelParameteriv(target, level, pname, &actual_value);
+    if (!piglit_check_gl_error(GL_NO_ERROR))
+        return false;
+
+    if (actual_value != expected_value) {
+        printf("Expected %s value of %d but got %d\n",
+                name, expected_value, actual_value);
+        return false;
+    }
+
+    return true;
+}
+
+void
+piglit_init(int argc, char **argv)
+{
+    GLuint tex2d;
+    bool pass = true;
+    piglit_require_extension("GL_ARB_texture_multisample");
+
+    /* check that new image state required by ARB_texture_multisample
+     * exists, and has correct defaults. Tests against a non-multisample
+     * texture target, since this state exists on all images. */
+
+    glGenTextures(1, &tex2d);
+    glBindTexture(GL_TEXTURE_2D, tex2d);
+    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 64, 64, 0, GL_RGBA, GL_UNSIGNED_BYTE, 0);
+
+    pass = check_texlevelparameter_int(GL_TEXTURE_2D, 0, "GL_TEXTURE_SAMPLES",
+            GL_TEXTURE_SAMPLES, 0) && pass;
+    pass = check_texlevelparameter_int(GL_TEXTURE_2D, 0, "GL_TEXTURE_FIXED_SAMPLE_LOCATIONS",
+            GL_TEXTURE_FIXED_SAMPLE_LOCATIONS, GL_TRUE) && pass;
+
+    piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
+}
-- 
1.8.1