anv: fix some multisample lines_wide CTS tests

We can use a better algorithm from ICL and onward by setting a chicken
bit, but prior to that we need to resort to disabling rectangular lines.
Since we don't support strictLines anyway, this shouldn't be a major
issue.

Closes #2833
Fixes dEQP-VK.rasterization.interpolation_multisample_*_bit.*lines_wide

Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11672>

src/intel/genxml/gen11.xml

@@ -6873,6 +6873,11 @@
     <field name="MFX Pipeline Command Flush" start="51" end="51" type="bool"/>
   </instruction>
 
+  <register name="3D_CHICKEN3" length="1" num="0x2090">
+     <field name="AA Line Quality Fix" start="5" end="5" type="bool"/>
+     <field name="AA Line Quality Fix Mask" start="21" end="21" type="bool"/>
+  </register>
+
   <register name="BCS_INSTDONE" length="1" num="0x2206c">
     <field name="Ring Enable" start="0" end="0" type="bool"/>
     <field name="Blitter IDLE" start="1" end="1" type="bool" default="1"/>

src/intel/genxml/gen12.xml

@@ -7061,6 +7061,11 @@
     <field name="MFX Pipeline Command Flush" start="51" end="51" type="bool"/>
   </instruction>
 
+  <register name="3D_CHICKEN3" length="1" num="0x2090">
+     <field name="AA Line Quality Fix" start="5" end="5" type="bool"/>
+     <field name="AA Line Quality Fix Mask" start="21" end="21" type="bool"/>
+  </register>
+
   <register name="BCS_INSTDONE" length="1" num="0x2206c">
     <field name="Ring Enable" start="0" end="0" type="bool"/>
     <field name="Blitter IDLE" start="1" end="1" type="bool" default="1"/>

src/intel/genxml/gen125.xml

@@ -7025,6 +7025,11 @@
     <field name="Per Sample Blend Opt Disable Mask" start="27" end="27" type="bool"/>
   </register>
 
+  <register name="CHICKEN_RASTER_1" length="1" num="0x6204">
+     <field name="AA Line Quality Fix" start="5" end="5" type="bool"/>
+     <field name="AA Line Quality Fix Mask" start="21" end="21" type="bool"/>
+  </register>
+
   <register name="CL_INVOCATION_COUNT" length="2" num="0x2338">
     <field name="CL Invocation Count Report" start="0" end="63" type="uint"/>
   </register>

src/intel/vulkan/anv_device.c

@@ -2011,11 +2011,12 @@ void anv_GetPhysicalDeviceProperties(
       .maxCombinedClipAndCullDistances          = 8,
       .discreteQueuePriorities                  = 2,
       .pointSizeRange                           = { 0.125, 255.875 },
-      .lineWidthRange                           = {
+      /* While SKL and up support much wider lines than we are setting here,
-         0.0,
+       * in practice we run into conformance issues if we go past this limit.
-         (devinfo->ver >= 9 || devinfo->is_cherryview) ?
+       * Since the Windows driver does the same, it's probably fair to assume
-            2047.9921875 : 7.9921875,
+       * that no one needs more than this.
-      },
+       */
+      .lineWidthRange                           = { 0.0, 8.0 },
       .pointSizeGranularity                     = (1.0 / 8.0),
       .lineWidthGranularity                     = (1.0 / 128.0),
       .strictLines                              = false,

src/intel/vulkan/anv_genX.h

@@ -130,6 +130,7 @@ void genX(cmd_emit_timestamp)(struct anv_batch *batch,
 void
 genX(rasterization_mode)(VkPolygonMode raster_mode,
                          VkLineRasterizationModeEXT line_mode,
+                         float line_width,
                          uint32_t *api_mode,
                          bool *msaa_rasterization_enable);
 

src/intel/vulkan/genX_pipeline.c

@@ -580,6 +580,7 @@ vk_conservative_rasterization_mode(const VkPipelineRasterizationStateCreateInfo
 void
 genX(rasterization_mode)(VkPolygonMode raster_mode,
                          VkLineRasterizationModeEXT line_mode,
+                         float line_width,
                          uint32_t *api_mode,
                          bool *msaa_rasterization_enable)
 {
@@ -599,7 +600,16 @@ genX(rasterization_mode)(VkPolygonMode raster_mode,
       switch (line_mode) {
       case VK_LINE_RASTERIZATION_MODE_RECTANGULAR_EXT:
          *api_mode = DX100;
+#if GFX_VER <= 9
+         /* Prior to ICL, the algorithm the HW uses to draw wide lines
+          * doesn't quite match what the CTS expects, at least for rectangular
+          * lines, so we set this to false here, making it draw parallelograms
+          * instead, which work well enough.
+          */
+         *msaa_rasterization_enable = line_width < 1.0078125;
+#else
          *msaa_rasterization_enable = true;
+#endif
          break;
 
       case VK_LINE_RASTERIZATION_MODE_RECTANGULAR_SMOOTH_EXT:
@@ -694,6 +704,7 @@ emit_rs_state(struct anv_graphics_pipeline *pipeline,
 #if GFX_VER >= 8
    if (!dynamic_primitive_topology)
       genX(rasterization_mode)(raster_mode, pipeline->line_mode,
+                               rs_info->lineWidth,
                                &raster.APIMode,
                                &raster.DXMultisampleRasterizationEnable);
 

src/intel/vulkan/genX_state.c

@@ -256,6 +256,20 @@ init_render_queue_state(struct anv_queue *queue)
       cc1.ReplayMode = MidcmdbufferPreemption;
       cc1.ReplayModeMask = true;
    }
+
+#if GFX_VERx10 < 125
+#define AA_LINE_QUALITY_REG GENX(3D_CHICKEN3)
+#else
+#define AA_LINE_QUALITY_REG GENX(CHICKEN_RASTER_1)
+#endif
+
+   /* Enable the new line drawing algorithm that produces higher quality
+    * lines.
+    */
+   anv_batch_write_reg(&batch, AA_LINE_QUALITY_REG, c3) {
+      c3.AALineQualityFix = true;
+      c3.AALineQualityFixMask = true;
+   }
 #endif
 
 #if GFX_VER == 12

src/intel/vulkan/gfx8_cmd_buffer.c

@@ -478,8 +478,8 @@ genX(cmd_buffer_flush_dynamic_state)(struct anv_cmd_buffer *cmd_buffer)
                                       primitive_topology);
 
          genX(rasterization_mode)(
-            dynamic_raster_mode, pipeline->line_mode, &api_mode,
+            dynamic_raster_mode, pipeline->line_mode, d->line_width,
-            &msaa_raster_enable);
+            &api_mode, &msaa_raster_enable);
 
          aa_enable =
             anv_rasterization_aa_mode(dynamic_raster_mode,