[Piglit] [PATCH] ext_texture_norm16-render: add more API coverage

[Tapani Pälli]

Add tests for glRenderbufferStorage and glCopyTexImage2D.

Signed-off-by: Tapani Pälli <tapani.pa...@intel.com>
---
 tests/spec/ext_texture_norm16/render.c | 53 ++++++++++++++++++++++++++++++++--
 1 file changed, 50 insertions(+), 3 deletions(-)

diff --git a/tests/spec/ext_texture_norm16/render.c 
b/tests/spec/ext_texture_norm16/render.c
index a6011e3f7..46cc7c91b 100644
--- a/tests/spec/ext_texture_norm16/render.c
+++ b/tests/spec/ext_texture_norm16/render.c
@@ -173,14 +173,12 @@ generate_data(const struct fmt_test *test)
 }
 
 static GLuint
-create_texture(const struct fmt_test *test)
+create_empty_texture()
 {
        GLuint tex;
        glGenTextures(1, &tex);
        glBindTexture(GL_TEXTURE_2D, tex);
 
-       generate_data(test);
-
        glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
        glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
@@ -189,6 +187,25 @@ create_texture(const struct fmt_test *test)
        return tex;
 }
 
+static GLuint
+create_texture(const struct fmt_test *test)
+{
+       GLuint tex = create_empty_texture();
+       generate_data(test);
+       return tex;
+}
+
+static GLuint
+create_rbo(const struct fmt_test *test)
+{
+       GLuint rbo;
+       glGenRenderbuffers(1, &rbo);
+       glBindRenderbuffer(GL_RENDERBUFFER, rbo);
+       glRenderbufferStorage(GL_RENDERBUFFER, test->iformat, piglit_width,
+                             piglit_height);
+       return rbo;
+}
+
 static GLuint
 create_fbo(const struct fmt_test *test, GLuint *tex)
 {
@@ -362,6 +379,21 @@ test_format(const struct fmt_test *test)
                return pass;
        }
 
+       /* Test glRenderbufferStorage. */
+       GLuint rbo = create_rbo(test);
+       if (!rbo || !piglit_check_gl_error(GL_NO_ERROR)) {
+               piglit_report_subtest_result(PIGLIT_FAIL,
+                                            "format 0x%x RBO test",
+                                            test->iformat);
+               pass &= false;
+       } else {
+               piglit_report_subtest_result(PIGLIT_PASS,
+                                            "format 0x%x RBO test",
+                                            test->iformat);
+       }
+       glDeleteRenderbuffers(1, &rbo);
+
+       /* Create framebuffer object. */
        GLuint fbo_tex;
        const GLuint fbo = create_fbo(test, &fbo_tex);
 
@@ -375,6 +407,21 @@ test_format(const struct fmt_test *test)
 
        render_texture(texture, GL_TEXTURE_2D, fbo);
 
+       /* Test glCopyTexImage2D by copying current fbo content to
+        * a texture, rendering copy back to fbo and verifying fbo contents.
+        */
+       GLuint tmp_tex = create_empty_texture();
+       glCopyTexImage2D(GL_TEXTURE_2D, 0, test->iformat, 0, 0, piglit_width,
+                        piglit_height, 0);
+
+       render_texture(tmp_tex, GL_TEXTURE_2D, fbo);
+
+       /* If format can be read, verify contents. */
+       if (test->can_read)
+               pass &= verify_contents(test);
+
+       glDeleteTextures(1, &tmp_tex);
+
        /* If GL_EXT_copy_image is supported then create another
         * texture, copy contents and render result to fbo.
         */
-- 
2.14.4

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