[Piglit] [PATCH] map_buffer_range_test: add tests to reproduce u_threaded & radeonsi bugs

[Marek Olšák]

From: Marek Olšák <marek.ol...@amd.com>

---
 .../map_buffer_range_test.c                   | 39 +++++++++++++++++++
 1 file changed, 39 insertions(+)

diff --git a/tests/spec/arb_map_buffer_range/map_buffer_range_test.c 
b/tests/spec/arb_map_buffer_range/map_buffer_range_test.c
index 2f5d2a39d..80d0afbdd 100644
--- a/tests/spec/arb_map_buffer_range/map_buffer_range_test.c
+++ b/tests/spec/arb_map_buffer_range/map_buffer_range_test.c
@@ -48,20 +48,33 @@ piglit_display(void)
 static bool
 verify_buffer(GLenum target, int offset, int length, void const *compare) {
        int ret;
        const void *ptr = glMapBufferRange(target, offset, length, 
GL_MAP_READ_BIT);
        ret = memcmp(ptr, compare, length);
        glUnmapBuffer(target);
 
        return ret == 0;
 }
 
+static void
+clear_buffer(GLenum target)
+{
+       if (piglit_is_extension_supported("GL_ARB_clear_buffer_object")) {
+               /* Clear the buffer just to make the device busy, so that
+                * the driver can't optimize MapBufferRange to unsychronized
+                * without explicit_flush.
+                */
+               int zero = 0;
+               glClearBufferData(target, GL_R32I, GL_RED_INTEGER, GL_INT, 
&zero);
+       }
+}
+
 /* This test relies on simple patterns, so using offets which are multiples of
  * 0x100 is bad
  */
 void
 piglit_init(int argc, char *argv[])
 {
        uint8_t *ptr;
        uint8_t temp_data[100];
        GLenum target = GL_ARRAY_BUFFER;
        GLenum verify = GL_COPY_WRITE_BUFFER;
@@ -130,12 +143,38 @@ piglit_init(int argc, char *argv[])
                                                    GL_MAP_FLUSH_EXPLICIT_BIT |
                                                    GL_MAP_UNSYNCHRONIZED_BIT);
        memcpy(ptr, temp_data, 100);
        glFlushMappedBufferRange(target, 0x0, 100);
        glUnmapBuffer(target);
        glCopyBufferSubData(target, verify, 0xa002, 100, 100);
        ret = verify_buffer(verify, 100, 100, temp_data);
        if (!ret)
                piglit_report_result(PIGLIT_FAIL);
 
+        /* 3c: test with flushed range, invalidate range */
+       clear_buffer(target);
+       ptr = glMapBufferRange(target, 0xa002, 100, GL_MAP_WRITE_BIT |
+                                                   GL_MAP_FLUSH_EXPLICIT_BIT |
+                                                   
GL_MAP_INVALIDATE_RANGE_BIT);
+       memcpy(ptr, temp_data, 100);
+       glFlushMappedBufferRange(target, 0x0, 100);
+       glUnmapBuffer(target);
+       glCopyBufferSubData(target, verify, 0xa002, 100, 100);
+       ret = verify_buffer(verify, 100, 100, temp_data);
+       if (!ret)
+               piglit_report_result(PIGLIT_FAIL);
+
+       /* 3d: test with flushed range, invalidate range, non-zero flush offset 
*/
+       clear_buffer(target);
+       ptr = glMapBufferRange(target, 0xa002 - 4, 104, GL_MAP_WRITE_BIT |
+                                                       
GL_MAP_FLUSH_EXPLICIT_BIT |
+                                                       
GL_MAP_INVALIDATE_RANGE_BIT);
+       memcpy(ptr + 4, temp_data, 100);
+       glFlushMappedBufferRange(target, 0x4, 100);
+       glUnmapBuffer(target);
+       glCopyBufferSubData(target, verify, 0xa002, 100, 100);
+       ret = verify_buffer(verify, 100, 100, temp_data);
+       if (!ret)
+               piglit_report_result(PIGLIT_FAIL);
+
        piglit_report_result(PIGLIT_PASS);
 }
-- 
2.17.1

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