diff --git a/src/intel/genxml/gen11.xml b/src/intel/genxml/gen11.xml
index 3f48fe76747..9b21c56be34 100644
--- a/src/intel/genxml/gen11.xml
+++ b/src/intel/genxml/gen11.xml
@@ -6873,6 +6873,11 @@
+
+
+
+
+
diff --git a/src/intel/genxml/gen12.xml b/src/intel/genxml/gen12.xml
index d05cfdf525a..158c9d4d4a0 100644
--- a/src/intel/genxml/gen12.xml
+++ b/src/intel/genxml/gen12.xml
@@ -7061,6 +7061,11 @@
+
+
+
+
+
diff --git a/src/intel/genxml/gen125.xml b/src/intel/genxml/gen125.xml
index f963c23bdc7..6dfda481ff1 100644
--- a/src/intel/genxml/gen125.xml
+++ b/src/intel/genxml/gen125.xml
@@ -7025,6 +7025,11 @@
+
+
+
+
+
diff --git a/src/intel/vulkan/anv_device.c b/src/intel/vulkan/anv_device.c
index 7aabda8fd85..8943b5473a3 100644
--- a/src/intel/vulkan/anv_device.c
+++ b/src/intel/vulkan/anv_device.c
@@ -2011,11 +2011,12 @@ void anv_GetPhysicalDeviceProperties(
.maxCombinedClipAndCullDistances = 8,
.discreteQueuePriorities = 2,
.pointSizeRange = { 0.125, 255.875 },
- .lineWidthRange = {
- 0.0,
- (devinfo->ver >= 9 || devinfo->is_cherryview) ?
- 2047.9921875 : 7.9921875,
- },
+ /* While SKL and up support much wider lines than we are setting here,
+ * in practice we run into conformance issues if we go past this limit.
+ * Since the Windows driver does the same, it's probably fair to assume
+ * that no one needs more than this.
+ */
+ .lineWidthRange = { 0.0, 8.0 },
.pointSizeGranularity = (1.0 / 8.0),
.lineWidthGranularity = (1.0 / 128.0),
.strictLines = false,
diff --git a/src/intel/vulkan/anv_genX.h b/src/intel/vulkan/anv_genX.h
index 1a595029d2f..61ad7465347 100644
--- a/src/intel/vulkan/anv_genX.h
+++ b/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);
diff --git a/src/intel/vulkan/genX_pipeline.c b/src/intel/vulkan/genX_pipeline.c
index bf5d8e81dd6..62068b3522f 100644
--- a/src/intel/vulkan/genX_pipeline.c
+++ b/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);
diff --git a/src/intel/vulkan/genX_state.c b/src/intel/vulkan/genX_state.c
index 73c8382d6a0..dd8ada9087a 100644
--- a/src/intel/vulkan/genX_state.c
+++ b/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
diff --git a/src/intel/vulkan/gfx8_cmd_buffer.c b/src/intel/vulkan/gfx8_cmd_buffer.c
index 05092caab6c..bb5d74d1bf1 100644
--- a/src/intel/vulkan/gfx8_cmd_buffer.c
+++ b/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,
- &msaa_raster_enable);
+ dynamic_raster_mode, pipeline->line_mode, d->line_width,
+ &api_mode, &msaa_raster_enable);
aa_enable =
anv_rasterization_aa_mode(dynamic_raster_mode,