util: Support all SRGB formats.

Based on code from Brian Paul and Michal Krol.

1 files changed, 94 insertions, 1 deletions

diff --git a/src/gallium/auxiliary/util/u_format_tests.c b/src/gallium/auxiliary/util/u_format_tests.c
index 0f81dcb79b..a16e676e38 100644
--- a/src/gallium/auxiliary/util/u_format_tests.c
+++ b/src/gallium/auxiliary/util/u_format_tests.c
@@ -175,9 +175,102 @@ util_format_test_cases[] =
    {PIPE_FORMAT_L16_UNORM, PACKED_1x16(0xffff), PACKED_1x16(0xffff), UNPACKED_1x1(1.0, 1.0, 1.0, 1.0)},
 
    /*
-    * TODO: SRGB formats
+    * SRGB formats
+    *
+    * FIXME: Alpha appears to be linear.
     */
 
+   {PIPE_FORMAT_L8_SRGB, PACKED_1x8(0xff), PACKED_1x8(0x00), UNPACKED_1x1(0.0, 0.0, 0.0, 1.0)},
+   {PIPE_FORMAT_L8_SRGB, PACKED_1x8(0xff), PACKED_1x8(0xbc), UNPACKED_1x1(0.502886458033, 0.502886458033, 0.502886458033, 1.0)},
+   {PIPE_FORMAT_L8_SRGB, PACKED_1x8(0xff), PACKED_1x8(0xff), UNPACKED_1x1(1.0, 1.0, 1.0, 1.0)},
+
+   {PIPE_FORMAT_L8A8_SRGB, PACKED_1x16(0xffff), PACKED_1x16(0x0000), UNPACKED_1x1(0.0, 0.0, 0.0, 0.0)},
+   {PIPE_FORMAT_L8A8_SRGB, PACKED_1x16(0xffff), PACKED_1x16(0x00bc), UNPACKED_1x1(0.502886458033, 0.502886458033, 0.502886458033, 0.0)},
+   {PIPE_FORMAT_L8A8_SRGB, PACKED_1x16(0xffff), PACKED_1x16(0x00ff), UNPACKED_1x1(1.0, 1.0, 1.0, 0.0)},
+   {PIPE_FORMAT_L8A8_SRGB, PACKED_1x16(0xffff), PACKED_1x16(0xcc00), UNPACKED_1x1(0.0, 0.0, 0.0, 0.8)},
+   {PIPE_FORMAT_L8A8_SRGB, PACKED_1x16(0xffff), PACKED_1x16(0xff00), UNPACKED_1x1(0.0, 0.0, 0.0, 1.0)},
+   {PIPE_FORMAT_L8A8_SRGB, PACKED_1x16(0xffff), PACKED_1x16(0xffff), UNPACKED_1x1(1.0, 1.0, 1.0, 1.0)},
+
+   {PIPE_FORMAT_R8G8B8_SRGB, PACKED_3x8(0xff, 0xff, 0xff), PACKED_3x8(0x00, 0x00, 0x00), UNPACKED_1x1(0.0, 0.0, 0.0, 1.0)},
+   {PIPE_FORMAT_R8G8B8_SRGB, PACKED_3x8(0xff, 0xff, 0xff), PACKED_3x8(0xbc, 0x00, 0x00), UNPACKED_1x1(0.502886458033, 0.0, 0.0, 1.0)},
+   {PIPE_FORMAT_R8G8B8_SRGB, PACKED_3x8(0xff, 0xff, 0xff), PACKED_3x8(0xff, 0x00, 0x00), UNPACKED_1x1(1.0, 0.0, 0.0, 1.0)},
+   {PIPE_FORMAT_R8G8B8_SRGB, PACKED_3x8(0xff, 0xff, 0xff), PACKED_3x8(0x00, 0xbc, 0x00), UNPACKED_1x1(0.0, 0.502886458033, 0.0, 1.0)},
+   {PIPE_FORMAT_R8G8B8_SRGB, PACKED_3x8(0xff, 0xff, 0xff), PACKED_3x8(0x00, 0xff, 0x00), UNPACKED_1x1(0.0, 1.0, 0.0, 1.0)},
+   {PIPE_FORMAT_R8G8B8_SRGB, PACKED_3x8(0xff, 0xff, 0xff), PACKED_3x8(0x00, 0x00, 0xbc), UNPACKED_1x1(0.0, 0.0, 0.502886458033, 1.0)},
+   {PIPE_FORMAT_R8G8B8_SRGB, PACKED_3x8(0xff, 0xff, 0xff), PACKED_3x8(0x00, 0x00, 0xff), UNPACKED_1x1(0.0, 0.0, 1.0, 1.0)},
+   {PIPE_FORMAT_R8G8B8_SRGB, PACKED_3x8(0xff, 0xff, 0xff), PACKED_3x8(0xff, 0xff, 0xff), UNPACKED_1x1(1.0, 1.0, 1.0, 1.0)},
+
+   {PIPE_FORMAT_R8G8B8A8_SRGB, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0x00, 0x00, 0x00, 0x00), UNPACKED_1x1(0.0, 0.0, 0.0, 0.0)},
+   {PIPE_FORMAT_R8G8B8A8_SRGB, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0xbc, 0x00, 0x00, 0x00), UNPACKED_1x1(0.502886458033, 0.0, 0.0, 0.0)},
+   {PIPE_FORMAT_R8G8B8A8_SRGB, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0xff, 0x00, 0x00, 0x00), UNPACKED_1x1(1.0, 0.0, 0.0, 0.0)},
+   {PIPE_FORMAT_R8G8B8A8_SRGB, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0x00, 0xbc, 0x00, 0x00), UNPACKED_1x1(0.0, 0.502886458033, 0.0, 0.0)},
+   {PIPE_FORMAT_R8G8B8A8_SRGB, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0x00, 0xff, 0x00, 0x00), UNPACKED_1x1(0.0, 1.0, 0.0, 0.0)},
+   {PIPE_FORMAT_R8G8B8A8_SRGB, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0x00, 0x00, 0xbc, 0x00), UNPACKED_1x1(0.0, 0.0, 0.502886458033, 0.0)},
+   {PIPE_FORMAT_R8G8B8A8_SRGB, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0x00, 0x00, 0xff, 0x00), UNPACKED_1x1(0.0, 0.0, 1.0, 0.0)},
+   {PIPE_FORMAT_R8G8B8A8_SRGB, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0x00, 0x00, 0x00, 0xcc), UNPACKED_1x1(0.0, 0.0, 0.0, 0.8)},
+   {PIPE_FORMAT_R8G8B8A8_SRGB, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0x00, 0x00, 0x00, 0xff), UNPACKED_1x1(0.0, 0.0, 0.0, 1.0)},
+   {PIPE_FORMAT_R8G8B8A8_SRGB, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0xff, 0xff, 0xff, 0xff), UNPACKED_1x1(1.0, 1.0, 1.0, 1.0)},
+
+   {PIPE_FORMAT_B8G8R8A8_SRGB, PACKED_1x32(0xffffffff), PACKED_1x32(0x00000000), UNPACKED_1x1(0.0, 0.0, 0.0, 0.0)},
+   {PIPE_FORMAT_B8G8R8A8_SRGB, PACKED_1x32(0xffffffff), PACKED_1x32(0x000000bc), UNPACKED_1x1(0.0, 0.0, 0.502886458033, 0.0)},
+   {PIPE_FORMAT_B8G8R8A8_SRGB, PACKED_1x32(0xffffffff), PACKED_1x32(0x000000ff), UNPACKED_1x1(0.0, 0.0, 1.0, 0.0)},
+   {PIPE_FORMAT_B8G8R8A8_SRGB, PACKED_1x32(0xffffffff), PACKED_1x32(0x0000bc00), UNPACKED_1x1(0.0, 0.502886458033, 0.0, 0.0)},
+   {PIPE_FORMAT_B8G8R8A8_SRGB, PACKED_1x32(0xffffffff), PACKED_1x32(0x0000ff00), UNPACKED_1x1(0.0, 1.0, 0.0, 0.0)},
+   {PIPE_FORMAT_B8G8R8A8_SRGB, PACKED_1x32(0xffffffff), PACKED_1x32(0x00bc0000), UNPACKED_1x1(0.502886458033, 0.0, 0.0, 0.0)},
+   {PIPE_FORMAT_B8G8R8A8_SRGB, PACKED_1x32(0xffffffff), PACKED_1x32(0x00ff0000), UNPACKED_1x1(1.0, 0.0, 0.0, 0.0)},
+   {PIPE_FORMAT_B8G8R8A8_SRGB, PACKED_1x32(0xffffffff), PACKED_1x32(0xcc000000), UNPACKED_1x1(0.0, 0.0, 0.0, 0.8)},
+   {PIPE_FORMAT_B8G8R8A8_SRGB, PACKED_1x32(0xffffffff), PACKED_1x32(0xff000000), UNPACKED_1x1(0.0, 0.0, 0.0, 1.0)},
+   {PIPE_FORMAT_B8G8R8A8_SRGB, PACKED_1x32(0xffffffff), PACKED_1x32(0xffffffff), UNPACKED_1x1(1.0, 1.0, 1.0, 1.0)},
+
+   {PIPE_FORMAT_B8G8R8X8_SRGB, PACKED_1x32(0x00ffffff), PACKED_1x32(0x00000000), UNPACKED_1x1(0.0, 0.0, 0.0, 1.0)},
+   {PIPE_FORMAT_B8G8R8X8_SRGB, PACKED_1x32(0x00ffffff), PACKED_1x32(0x000000bc), UNPACKED_1x1(0.0, 0.0, 0.502886458033, 1.0)},
+   {PIPE_FORMAT_B8G8R8X8_SRGB, PACKED_1x32(0x00ffffff), PACKED_1x32(0x000000ff), UNPACKED_1x1(0.0, 0.0, 1.0, 1.0)},
+   {PIPE_FORMAT_B8G8R8X8_SRGB, PACKED_1x32(0x00ffffff), PACKED_1x32(0x0000bc00), UNPACKED_1x1(0.0, 0.502886458033, 0.0, 1.0)},
+   {PIPE_FORMAT_B8G8R8X8_SRGB, PACKED_1x32(0x00ffffff), PACKED_1x32(0x0000ff00), UNPACKED_1x1(0.0, 1.0, 0.0, 1.0)},
+   {PIPE_FORMAT_B8G8R8X8_SRGB, PACKED_1x32(0x00ffffff), PACKED_1x32(0x00bc0000), UNPACKED_1x1(0.502886458033, 0.0, 0.0, 1.0)},
+   {PIPE_FORMAT_B8G8R8X8_SRGB, PACKED_1x32(0x00ffffff), PACKED_1x32(0x00ff0000), UNPACKED_1x1(1.0, 0.0, 0.0, 1.0)},
+   {PIPE_FORMAT_B8G8R8X8_SRGB, PACKED_1x32(0x00ffffff), PACKED_1x32(0xffffffff), UNPACKED_1x1(1.0, 1.0, 1.0, 1.0)},
+
+   {PIPE_FORMAT_A8R8G8B8_SRGB, PACKED_1x32(0xffffffff), PACKED_1x32(0x00000000), UNPACKED_1x1(0.0, 0.0, 0.0, 0.0)},
+   {PIPE_FORMAT_A8R8G8B8_SRGB, PACKED_1x32(0xffffffff), PACKED_1x32(0x000000cc), UNPACKED_1x1(0.0, 0.0, 0.0, 0.8)},
+   {PIPE_FORMAT_A8R8G8B8_SRGB, PACKED_1x32(0xffffffff), PACKED_1x32(0x000000ff), UNPACKED_1x1(0.0, 0.0, 0.0, 1.0)},
+   {PIPE_FORMAT_A8R8G8B8_SRGB, PACKED_1x32(0xffffffff), PACKED_1x32(0x0000bc00), UNPACKED_1x1(0.502886458033, 0.0, 0.0, 0.0)},
+   {PIPE_FORMAT_A8R8G8B8_SRGB, PACKED_1x32(0xffffffff), PACKED_1x32(0x0000ff00), UNPACKED_1x1(1.0, 0.0, 0.0, 0.0)},
+   {PIPE_FORMAT_A8R8G8B8_SRGB, PACKED_1x32(0xffffffff), PACKED_1x32(0x00bc0000), UNPACKED_1x1(0.0, 0.502886458033, 0.0, 0.0)},
+   {PIPE_FORMAT_A8R8G8B8_SRGB, PACKED_1x32(0xffffffff), PACKED_1x32(0x00ff0000), UNPACKED_1x1(0.0, 1.0, 0.0, 0.0)},
+   {PIPE_FORMAT_A8R8G8B8_SRGB, PACKED_1x32(0xffffffff), PACKED_1x32(0xbc000000), UNPACKED_1x1(0.0, 0.0, 0.502886458033, 0.0)},
+   {PIPE_FORMAT_A8R8G8B8_SRGB, PACKED_1x32(0xffffffff), PACKED_1x32(0xff000000), UNPACKED_1x1(0.0, 0.0, 1.0, 0.0)},
+   {PIPE_FORMAT_A8R8G8B8_SRGB, PACKED_1x32(0xffffffff), PACKED_1x32(0xffffffff), UNPACKED_1x1(1.0, 1.0, 1.0, 1.0)},
+
+   {PIPE_FORMAT_X8R8G8B8_SRGB, PACKED_1x32(0xffffff00), PACKED_1x32(0x00000000), UNPACKED_1x1(0.0, 0.0, 0.0, 1.0)},
+   {PIPE_FORMAT_X8R8G8B8_SRGB, PACKED_1x32(0xffffff00), PACKED_1x32(0x0000bc00), UNPACKED_1x1(0.502886458033, 0.0, 0.0, 1.0)},
+   {PIPE_FORMAT_X8R8G8B8_SRGB, PACKED_1x32(0xffffff00), PACKED_1x32(0x0000ff00), UNPACKED_1x1(1.0, 0.0, 0.0, 1.0)},
+   {PIPE_FORMAT_X8R8G8B8_SRGB, PACKED_1x32(0xffffff00), PACKED_1x32(0x00bc0000), UNPACKED_1x1(0.0, 0.502886458033, 0.0, 1.0)},
+   {PIPE_FORMAT_X8R8G8B8_SRGB, PACKED_1x32(0xffffff00), PACKED_1x32(0x00ff0000), UNPACKED_1x1(0.0, 1.0, 0.0, 1.0)},
+   {PIPE_FORMAT_X8R8G8B8_SRGB, PACKED_1x32(0xffffff00), PACKED_1x32(0xbc000000), UNPACKED_1x1(0.0, 0.0, 0.502886458033, 1.0)},
+   {PIPE_FORMAT_X8R8G8B8_SRGB, PACKED_1x32(0xffffff00), PACKED_1x32(0xff000000), UNPACKED_1x1(0.0, 0.0, 1.0, 1.0)},
+   {PIPE_FORMAT_X8R8G8B8_SRGB, PACKED_1x32(0xffffff00), PACKED_1x32(0xffffffff), UNPACKED_1x1(1.0, 1.0, 1.0, 1.0)},
+
+   {PIPE_FORMAT_A8B8G8R8_SRGB, PACKED_1x32(0xffffffff), PACKED_1x32(0x00000000), UNPACKED_1x1(0.0, 0.0, 0.0, 0.0)},
+   {PIPE_FORMAT_A8B8G8R8_SRGB, PACKED_1x32(0xffffffff), PACKED_1x32(0x000000cc), UNPACKED_1x1(0.0, 0.0, 0.0, 0.8)},
+   {PIPE_FORMAT_A8B8G8R8_SRGB, PACKED_1x32(0xffffffff), PACKED_1x32(0x000000ff), UNPACKED_1x1(0.0, 0.0, 0.0, 1.0)},
+   {PIPE_FORMAT_A8B8G8R8_SRGB, PACKED_1x32(0xffffffff), PACKED_1x32(0x0000bc00), UNPACKED_1x1(0.0, 0.0, 0.502886458033, 0.0)},
+   {PIPE_FORMAT_A8B8G8R8_SRGB, PACKED_1x32(0xffffffff), PACKED_1x32(0x0000ff00), UNPACKED_1x1(0.0, 0.0, 1.0, 0.0)},
+   {PIPE_FORMAT_A8B8G8R8_SRGB, PACKED_1x32(0xffffffff), PACKED_1x32(0x00bc0000), UNPACKED_1x1(0.0, 0.502886458033, 0.0, 0.0)},
+   {PIPE_FORMAT_A8B8G8R8_SRGB, PACKED_1x32(0xffffffff), PACKED_1x32(0x00ff0000), UNPACKED_1x1(0.0, 1.0, 0.0, 0.0)},
+   {PIPE_FORMAT_A8B8G8R8_SRGB, PACKED_1x32(0xffffffff), PACKED_1x32(0xbc000000), UNPACKED_1x1(0.502886458033, 0.0, 0.0, 0.0)},
+   {PIPE_FORMAT_A8B8G8R8_SRGB, PACKED_1x32(0xffffffff), PACKED_1x32(0xff000000), UNPACKED_1x1(1.0, 0.0, 0.0, 0.0)},
+   {PIPE_FORMAT_A8B8G8R8_SRGB, PACKED_1x32(0xffffffff), PACKED_1x32(0xffffffff), UNPACKED_1x1(1.0, 1.0, 1.0, 1.0)},
+
+   {PIPE_FORMAT_X8B8G8R8_SRGB, PACKED_1x32(0xffffff00), PACKED_1x32(0x00000000), UNPACKED_1x1(0.0, 0.0, 0.0, 1.0)},
+   {PIPE_FORMAT_X8B8G8R8_SRGB, PACKED_1x32(0xffffff00), PACKED_1x32(0x0000bc00), UNPACKED_1x1(0.0, 0.0, 0.502886458033, 1.0)},
+   {PIPE_FORMAT_X8B8G8R8_SRGB, PACKED_1x32(0xffffff00), PACKED_1x32(0x0000ff00), UNPACKED_1x1(0.0, 0.0, 1.0, 1.0)},
+   {PIPE_FORMAT_X8B8G8R8_SRGB, PACKED_1x32(0xffffff00), PACKED_1x32(0x00bc0000), UNPACKED_1x1(0.0, 0.502886458033, 0.0, 1.0)},
+   {PIPE_FORMAT_X8B8G8R8_SRGB, PACKED_1x32(0xffffff00), PACKED_1x32(0x00ff0000), UNPACKED_1x1(0.0, 1.0, 0.0, 1.0)},
+   {PIPE_FORMAT_X8B8G8R8_SRGB, PACKED_1x32(0xffffff00), PACKED_1x32(0xbc000000), UNPACKED_1x1(0.502886458033, 0.0, 0.0, 1.0)},
+   {PIPE_FORMAT_X8B8G8R8_SRGB, PACKED_1x32(0xffffff00), PACKED_1x32(0xff000000), UNPACKED_1x1(1.0, 0.0, 0.0, 1.0)},
+   {PIPE_FORMAT_X8B8G8R8_SRGB, PACKED_1x32(0xffffff00), PACKED_1x32(0xffffffff), UNPACKED_1x1(1.0, 1.0, 1.0, 1.0)},
+
    /*
     * Mixed-signed formats
     */