nir: Add load_sampler_lod_paramaters_pan intrinsic

[mesa.git] / src / compiler / nir / nir_intrinsics.py

diff --git a/src/compiler/nir/nir_intrinsics.py b/src/compiler/nir/nir_intrinsics.py
index 9c1418f2a4ec3328a36a8b1c09e8e654fd2f96c4..3939f8ff5107c201e43b225e40d5eb3396ba30c8 100644 (file)
--- a/src/compiler/nir/nir_intrinsics.py
+++ b/src/compiler/nir/nir_intrinsics.py
@@ -792,6 +792,20 @@ system_value("vs_vertex_stride_ir3", 1)
 system_value("gs_header_ir3", 1)
 system_value("primitive_location_ir3", 1, indices=[DRIVER_LOCATION])
 
+# System values for freedreno tessellation shaders.
+system_value("hs_patch_stride_ir3", 1)
+system_value("tess_factor_base_ir3", 2)
+system_value("tess_param_base_ir3", 2)
+system_value("tcs_header_ir3", 1)
+
+# IR3-specific intrinsics for tessellation control shaders.  cond_end_ir3 end
+# the shader when src0 is false and is used to narrow down the TCS shader to
+# just thread 0 before writing out tessellation levels.
+intrinsic("cond_end_ir3", src_comp=[1])
+# end_patch_ir3 is used just before thread 0 exist the TCS and presumably
+# signals the TE that the patch is complete and can be tessellated.
+intrinsic("end_patch_ir3")
+
 # IR3-specific load/store intrinsics. These access a buffer used to pass data
 # between geometry stages - perhaps it's explicit access to the vertex cache.
 
@@ -822,10 +836,20 @@ intrinsic("load_global_ir3", [2, 1], dest_comp=0, indices=[ACCESS, ALIGN_MUL, AL
 # One notable divergence is sRGB, which is asymmetric: raw_input_pan requires
 # an sRGB->linear conversion, but linear values should be written to
 # raw_output_pan and the hardware handles linear->sRGB.
+#
+# We also have format-specific Midgard intrinsics. There are rather
+# here-be-dragons. load_output_u8_as_fp16_pan does the equivalent of
+# load_raw_out_pan on an RGBA8 UNORM framebuffer followed by u2u16 -> fp16 ->
+# division by 255.
 
 # src[] = { value }
 store("raw_output_pan", 1, [])
 load("raw_output_pan", 0, [], [CAN_ELIMINATE, CAN_REORDER])
+load("output_u8_as_fp16_pan", 0, [], [CAN_ELIMINATE, CAN_REORDER])
+
+# Loads the sampler paramaters <min_lod, max_lod, lod_bias>
+# src[] = { sampler_index }
+load("sampler_lod_parameters_pan", 1, [CAN_ELIMINATE, CAN_REORDER])
 
 # V3D-specific instrinc for tile buffer color reads.
 #