radeonsi: change rounding mode to round to even

Use ROUND_TO_EVEN instead of TRUNCATE; this matches what pal and radv do.

This fixes the spec@ext_framebuffer_multisample@turn-on-off tests.

Cc: mesa-stable

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Mihai Preda <mhpreda@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/15240>

src/gallium/drivers/radeonsi/ci/navi10-piglit-quick-fail.csv

@@ -109,10 +109,6 @@ spec@egl_chromium_sync_control@conformance,Fail
 spec@egl_chromium_sync_control@conformance@eglGetSyncValuesCHROMIUM_msc_and_sbc_test,Fail
 spec@egl_ext_protected_content@conformance,Fail
 spec@ext_framebuffer_blit@fbo-blit-check-limits,Fail
-spec@ext_framebuffer_multisample@turn-on-off 2,Fail
-spec@ext_framebuffer_multisample@turn-on-off 4,Fail
-spec@ext_framebuffer_multisample@turn-on-off 6,Fail
-spec@ext_framebuffer_multisample@turn-on-off 8,Fail
 spec@ext_image_dma_buf_import@ext_image_dma_buf_import-sample_uyvy,Fail
 spec@ext_image_dma_buf_import@ext_image_dma_buf_import-sample_yuyv,Fail
 spec@glsl-1.20@compiler@invalid-vec4-array-to-vec3-array-conversion.vert,Fail

src/gallium/drivers/radeonsi/ci/radeonsi-stoney-fails.txt

@@ -66,10 +66,6 @@ spec@egl_ext_protected_content@conformance,Fail
 spec@egl_khr_surfaceless_context@viewport,Fail
 spec@egl_mesa_configless_context@basic,Fail
 spec@ext_framebuffer_blit@fbo-blit-check-limits,Fail
-spec@ext_framebuffer_multisample@turn-on-off 2,Fail
-spec@ext_framebuffer_multisample@turn-on-off 4,Fail
-spec@ext_framebuffer_multisample@turn-on-off 6,Fail
-spec@ext_framebuffer_multisample@turn-on-off 8,Fail
 spec@ext_image_dma_buf_import@ext_image_dma_buf_import-sample_y216,Fail
 spec@ext_image_dma_buf_import@ext_image_dma_buf_import-sample_yuyv,Fail
 spec@ext_image_dma_buf_import@ext_image_dma_buf_import-sample_uyvy,Fail

src/gallium/drivers/radeonsi/ci/raven-piglit-quick-fail.csv

@@ -195,10 +195,6 @@ spec@egl_chromium_sync_control@conformance,Fail
 spec@egl_chromium_sync_control@conformance@eglGetSyncValuesCHROMIUM_msc_and_sbc_test,Fail
 spec@egl_ext_protected_content@conformance,Fail
 spec@ext_framebuffer_blit@fbo-blit-check-limits,Fail
-spec@ext_framebuffer_multisample@turn-on-off 2,Fail
-spec@ext_framebuffer_multisample@turn-on-off 4,Fail
-spec@ext_framebuffer_multisample@turn-on-off 6,Fail
-spec@ext_framebuffer_multisample@turn-on-off 8,Fail
 spec@ext_image_dma_buf_import@ext_image_dma_buf_import-sample_uyvy,Fail
 spec@ext_image_dma_buf_import@ext_image_dma_buf_import-sample_yuyv,Fail
 spec@ext_texture_snorm@multisample-formats 2 gl_ext_texture_snorm,Fail

src/gallium/drivers/radeonsi/ci/sienna_cichlid-piglit-quick-fail.csv

@@ -110,10 +110,6 @@ spec@egl_chromium_sync_control@conformance,Fail
 spec@egl_chromium_sync_control@conformance@eglGetSyncValuesCHROMIUM_msc_and_sbc_test,Fail
 spec@egl_ext_protected_content@conformance,Fail
 spec@ext_framebuffer_blit@fbo-blit-check-limits,Fail
-spec@ext_framebuffer_multisample@turn-on-off 2,Fail
-spec@ext_framebuffer_multisample@turn-on-off 4,Fail
-spec@ext_framebuffer_multisample@turn-on-off 6,Fail
-spec@ext_framebuffer_multisample@turn-on-off 8,Fail
 spec@ext_image_dma_buf_import@ext_image_dma_buf_import-sample_uyvy,Fail
 spec@ext_image_dma_buf_import@ext_image_dma_buf_import-sample_yuyv,Fail
 spec@glsl-1.20@compiler@invalid-vec4-array-to-vec3-array-conversion.vert,Fail

src/gallium/drivers/radeonsi/ci/traces-radeonsi.yml

@@ -5,19 +5,19 @@ traces:
   - path: glmark2/desktop:windows=4:effect=blur:blur-radius=5:passes=1:separable=true.trace
     expectations:
       - device: gl-radeonsi-stoney
-        checksum: d8c9bf6295525e65e318adeff02520e2
+        checksum: 740fa8f8e9a9d815cf160b1893370755
   - path: glmark2/jellyfish.trace
     expectations:
       - device: gl-radeonsi-stoney
-        checksum: f68bf374e535ad4a43a08786b0d536d8
+        checksum: 5bc7d5c250b7d568313c4afd064082f6
   - path: glxgears/glxgears-2.trace
     expectations:
       - device: gl-radeonsi-stoney
-        checksum: eb9b3d497be567f02a6e039fa32f2b13
+        checksum: ef3653f50d4853d3e9cb3244c799565a
   - path: 0ad/0ad.trace
     expectations:
       - device: gl-radeonsi-stoney
-        checksum: 8fb8cd54f1ff908952fe0b6dd9f28999
+        checksum: 1a089d8584a9e68e7ab08eada954741b
   - path: pathfinder/demo.trace
     expectations:
       - device: gl-radeonsi-stoney
@@ -33,7 +33,7 @@ traces:
   - path: gputest/furmark.trace
     expectations:
       - device: gl-radeonsi-stoney
-        checksum: 84c499203944cdc59e70450c324bb8df
+        checksum: 4ceea12000bb5995b915228d2d4b49c7
   - path: gputest/triangle.trace
     expectations:
       - device: gl-radeonsi-stoney
@@ -41,47 +41,47 @@ traces:
   - path: humus/Portals.trace
     expectations:
       - device: gl-radeonsi-stoney
-        checksum: fc7d00efe380cacbd4e9ef9b231aea2f
+        checksum: 5b96333495b794691e4ed071ae92ff19
   - path: glmark2/buffer:update-fraction=0.5:update-dispersion=0.9:columns=200:update-method=map:interleave=false.trace
     expectations:
       - device: gl-radeonsi-stoney
-        checksum: 5af6e31cc78320cb3f9db483c7a426e0
+        checksum: 5db05161041946e8971f39f12bbd847c
   - path: glmark2/buffer:update-fraction=0.5:update-dispersion=0.9:columns=200:update-method=map:interleave=true.trace
     expectations:
       - device: gl-radeonsi-stoney
-        checksum: 6e9dc5a7dc5a9cbb2b396bfce88a2084
+        checksum: e2154c522fcdb4f43b31b31c17adda74
   - path: glmark2/buffer:update-fraction=0.5:update-dispersion=0.9:columns=200:update-method=subdata:interleave=false.trace
     expectations:
       - device: gl-radeonsi-stoney
-        checksum: 35e384f833f37411f15bf8ef80ca1914
+        checksum: 70298e48479147af2d848a5441fb5f47
   - path: glmark2/bump:bump-render=height.trace
     expectations:
       - device: gl-radeonsi-stoney
-        checksum: 526cf3805b9b64bb8edea1b7d86b9cae
+        checksum: f5129b06e401a5fefa18a9895b18deec
   - path: glmark2/bump:bump-render=high-poly.trace
     expectations:
       - device: gl-radeonsi-stoney
-        checksum: e026d36eaa71ecd957b47c7e6a5a100b
+        checksum: 3fc1adf0caa289b3296a80c2c13834ca
   - path: glmark2/bump:bump-render=normals.trace
     expectations:
       - device: gl-radeonsi-stoney
-        checksum: 4508a1be8c33a63fbfa695b141edf48b
+        checksum: 596fd7a084d3a7a6b61b322593385f45
   - path: glmark2/conditionals:vertex-steps=0:fragment-steps=0.trace
     expectations:
       - device: gl-radeonsi-stoney
-        checksum: d12ecac5894705295e4fa076d77a72ab
+        checksum: fb2eda378ace8ca8b81d73d20cbfbbf7
   - path: glmark2/conditionals:vertex-steps=0:fragment-steps=5.trace
     expectations:
       - device: gl-radeonsi-stoney
-        checksum: 8999ff7eda7d7cf25440b96ab0efd4ee
+        checksum: b8575de0e043f540b12f13209054d000
   - path: glmark2/conditionals:vertex-steps=5:fragment-steps=0.trace
     expectations:
       - device: gl-radeonsi-stoney
-        checksum: e65fdae9fe7bbd95c5cc0fb0c3eb7bf4
+        checksum: f70625a1f9bd9d2c211e330032b86f85
   - path: glmark2/desktop:windows=4:effect=shadow.trace
     expectations:
       - device: gl-radeonsi-stoney
-        checksum: 2aff87605464dd3f61aefd4e1dc0bffd
+        checksum: 384015de55daf7dd406c9463576018e9
   - path: glmark2/effect2d:kernel=0,1,0;1,-4,1;0,1,0;.trace
     expectations:
       - device: gl-radeonsi-stoney
@@ -93,87 +93,87 @@ traces:
   - path: glmark2/function:fragment-steps=5:fragment-complexity=low.trace
     expectations:
       - device: gl-radeonsi-stoney
-        checksum: 13149880306d2183703a5c327f4d750a
+        checksum: 9efd8bb5df15f9483a18a00f9650caa9
   - path: glmark2/function:fragment-steps=5:fragment-complexity=medium.trace
     expectations:
       - device: gl-radeonsi-stoney
-        checksum: c6983ffb3a74e234f84e5d817f876f54
+        checksum: 9bdd506c0404cb11a7148cb08b429d1b
   - path: glmark2/build:use-vbo=false.trace
     expectations:
       - device: gl-radeonsi-stoney
-        checksum: 203a0205580b2c39ed8dcbed57b18f3c
+        checksum: 506b1910317b04e5d32aacf2bd70bd0d
   - path: glmark2/build:use-vbo=true.trace
     expectations:
       - device: gl-radeonsi-stoney
-        checksum: 437034f264c469757683e51e3e25beca
+        checksum: 793dc29115ae442b279276adb89d0999
   - path: glmark2/ideas:speed=10000.trace
     expectations:
       - device: gl-radeonsi-stoney
-        checksum: 381d973b00b46fcc15f72808eabb6237
+        checksum: 1ae057093620f868aad846167f04c6e0
   - path: glmark2/loop:vertex-steps=5:fragment-steps=5:fragment-loop=false.trace
     expectations:
       - device: gl-radeonsi-stoney
-        checksum: 5a32f7917c130581fae23e58b71fd740
+        checksum: 6fb2f9bce414879e3751bb51d1a8d481
   - path: glmark2/loop:vertex-steps=5:fragment-steps=5:fragment-uniform=false.trace
     expectations:
       - device: gl-radeonsi-stoney
-        checksum: 20586c936a7051ce63503df6f9785d01
+        checksum: 27fabda45ca2a989c21b4ec386a2e8f6
   - path: glmark2/loop:vertex-steps=5:fragment-steps=5:fragment-uniform=true.trace
     expectations:
       - device: gl-radeonsi-stoney
-        checksum: 255e412701afdc4a7b62654e93b92cc9
+        checksum: 05ac8be6e2e0c03ea1caec85f037cddd
   - path: glmark2/pulsar:quads=5:texture=false:light=false.trace
     expectations:
       - device: gl-radeonsi-stoney
-        checksum: 42f913c6119a685da4450ea116060614
+        checksum: 0b62b9c04e4c00f44eba64b366c47783
   - path: glmark2/refract.trace
     expectations:
       - device: gl-radeonsi-stoney
-        checksum: 9d0a2d2fce0b80a265fbcee5107c9e82
+        checksum: c711f3a07f6aa9e0f19c544c6d7c2000
   - path: glmark2/shading:shading=blinn-phong-inf.trace
     expectations:
       - device: gl-radeonsi-stoney
-        checksum: 4a2cf8a13b248f470e58f785d0a9207d
+        checksum: 429c6bbdf99d573cc4eaaee3c0471257
   - path: glmark2/shading:shading=cel.trace
     expectations:
       - device: gl-radeonsi-stoney
-        checksum: 8325ce4073135c03eec241087e51a584
+        checksum: 330d9a8375970e42ba5ddc3142dc6477
   - path: glmark2/shading:shading=gouraud.trace
     expectations:
       - device: gl-radeonsi-stoney
-        checksum: fbe5b7d038866f6cd4fc801b062e4ce5
+        checksum: e22908309d41af8c9753c5c7cae73b29
   - path: glmark2/shading:shading=phong.trace
     expectations:
       - device: gl-radeonsi-stoney
-        checksum: 65f9468a37d683b4c1f38d34f09a97db
+        checksum: 2ac9f1b6ba39f8924b374d18181edeeb
   - path: glmark2/shadow.trace
     expectations:
       - device: gl-radeonsi-stoney
-        checksum: abd705b0ae76cf6f19905bfea1d3db76
+        checksum: 9215a1525dfe5b12999652b3a3ba05d8
   - path: glmark2/terrain.trace
     expectations:
       - device: gl-radeonsi-stoney
-        checksum: 59690f1438a1e44fc655d16ce8bb348b
+        checksum: 80a1bba6ff969c9a82c68de0306f2b61
   - path: glmark2/texture:texture-filter=linear.trace
     expectations:
       - device: gl-radeonsi-stoney
-        checksum: 54bf32b499f3ebfe0e727e5716e54b1a
+        checksum: 928479421abda4823a673393cd59ff81
   - path: glmark2/texture:texture-filter=mipmap.trace
     expectations:
       - device: gl-radeonsi-stoney
-        checksum: 3a3abce164eef2be10f58604b22583f2
+        checksum: cb94bca58ed8f41c5f6f6dda3fb15600
   - path: glmark2/texture:texture-filter=nearest.trace
     expectations:
       - device: gl-radeonsi-stoney
-        checksum: 311c394eb4afd48bd8330d0e69470b87
+        checksum: 63762536d93048c0dadb19b22381cb90
   - path: godot/Material Testers.x86_64_2020.04.08_13.38_frame799.rdc
     expectations:
       - device: gl-radeonsi-stoney
-        checksum: 02f654ad77c0c1106e1b31e1c86c93bb
+        checksum: 0e7441a7f2c86c75eeac72269786e7a1
   - path: gputest/gimark.trace
     expectations:
       - device: gl-radeonsi-stoney
-        checksum: 4442dbd44a9704c499da4817fffce306
+        checksum: 3e021c1c5f2900e53c3375e0366eeda9
   - path: gputest/pixmark-julia-fp32.trace
     expectations:
       - device: gl-radeonsi-stoney
@@ -189,56 +189,56 @@ traces:
   - path: gputest/plot3d.trace
     expectations:
       - device: gl-radeonsi-stoney
-        checksum: 667078b0f51ac8e0469ef9a20326c616
+        checksum: 2832d2190df232bcbde71a4b720303e1
   - path: gputest/tessmark.trace
     expectations:
       - device: gl-radeonsi-stoney
-        checksum: cdcf984e81f2cda9ca7f56e3a4addaa7
+        checksum: b4bc7998ff804bf25aac9f9609b8acbf
   - path: humus/AmbientAperture.trace
     expectations:
       - device: gl-radeonsi-stoney
-        checksum: 664ea58a62b27737b7d0ae9e86ab85c0
+        checksum: 679dc88e5f0d3b3608e0490b4b39fbea
   - path: humus/CelShading.trace
     expectations:
       - device: gl-radeonsi-stoney
-        checksum: 7d30dbe3470873c327464ea7ebe6bcf0
+        checksum: ebd3f460386b9461aab6adef04dc0547
   - path: humus/DynamicBranching3.trace
     expectations:
       - device: gl-radeonsi-stoney
-        checksum: 5a5addfb1c7acc22104c0ecb29f45174
+        checksum: 9f932808ccce10a2bf7568ddafe1a1cf
   - path: humus/HDR.trace
     expectations:
       - device: gl-radeonsi-stoney
-        checksum: b44ce4cb377321f6423a5a62a9083794
+        checksum: fddf642f7a4e3946f1975e33cf773220
   - path: humus/RaytracedShadows.trace
     expectations:
       - device: gl-radeonsi-stoney
-        checksum: 2e2e58e0b32329d6cf90ab0ec71108fd
+        checksum: 743ce9c218b87404cfe615ed7951d5b8
   - path: paraview/pv-manyspheres.trace
     expectations:
       - device: gl-radeonsi-stoney
-        checksum: 7e405460c58557573bd9cc54035bb62a
+        checksum: 7728082892aa81ee74484b1ed239db74
   - path: paraview/pv-waveletcontour.trace
     expectations:
       - device: gl-radeonsi-stoney
-        checksum: 961fb30a1a3756678662d1a9a45b1400
+        checksum: c49b01d08b9716cd3408173d2dd1c9ef
   - path: paraview/pv-waveletvolume.trace
     expectations:
       - device: gl-radeonsi-stoney
-        checksum: f1093f472683a16dec0d5da4b599356f
+        checksum: 491d0572ab0bcbcbc9827521597b3787
   - path: humus/VolumetricFogging2.trace
     expectations:
       - device: gl-radeonsi-stoney
-        checksum: 1a9b3aa90d2c4a0d3937ecacca2da052
+        checksum: e3eb8d6934c23cbef7133ba501821698
   - path: supertuxkart/supertuxkart-antediluvian-abyss.rdc
     expectations:
       - device: gl-radeonsi-stoney
-        checksum: fd717f0214c2e5d08538d2de30bfe180
+        checksum: 112f203971d0f1ae46bc8268683480a2
   - path: supertuxkart/supertuxkart-menu.rdc
     expectations:
       - device: gl-radeonsi-stoney
-        checksum: bc851bb8808b311c2df9c36a6c289e6e
+        checksum: e17f3125683d8b2acac8bc0b4b8e1b44
   - path: supertuxkart/supertuxkart-ravenbridge-mansion.rdc
     expectations:
       - device: gl-radeonsi-stoney
-        checksum: f2e730f7378af65abbf82cc30e4ba64d
+        checksum: 60f74020451e9beaf586b4551541b763

src/gallium/drivers/radeonsi/ci/vega20-piglit-quick-fail.csv

@@ -97,10 +97,6 @@ spec@arb_sparse_buffer@buffer-data,Fail
 spec@arb_sparse_buffer@commit,Fail
 spec@egl_ext_protected_content@conformance,Fail
 spec@ext_framebuffer_blit@fbo-blit-check-limits,Fail
-spec@ext_framebuffer_multisample@turn-on-off 2,Fail
-spec@ext_framebuffer_multisample@turn-on-off 4,Fail
-spec@ext_framebuffer_multisample@turn-on-off 6,Fail
-spec@ext_framebuffer_multisample@turn-on-off 8,Fail
 spec@ext_image_dma_buf_import@ext_image_dma_buf_import-sample_uyvy,Fail
 spec@ext_image_dma_buf_import@ext_image_dma_buf_import-sample_y210,Fail
 spec@ext_image_dma_buf_import@ext_image_dma_buf_import-sample_y212,Fail

src/gallium/drivers/radeonsi/si_state_viewport.c

@@ -387,7 +387,7 @@ static void si_emit_guardband(struct si_context *ctx)
                                  S_028234_HW_SCREEN_OFFSET_Y(hw_screen_offset_y >> 4));
    radeon_opt_set_context_reg(
       ctx, R_028BE4_PA_SU_VTX_CNTL, SI_TRACKED_PA_SU_VTX_CNTL,
-      S_028BE4_PIX_CENTER(rs->half_pixel_center) |
+      S_028BE4_PIX_CENTER(rs->half_pixel_center) | S_028BE4_ROUND_MODE(V_028BE4_X_ROUND_TO_EVEN) |
          S_028BE4_QUANT_MODE(V_028BE4_X_16_8_FIXED_POINT_1_256TH + vp_as_scissor.quant_mode));
    radeon_end_update_context_roll(ctx);
 }