Mesa (master): i965: Store a clip_distance_mask field similar to cull_distance_mask.

[Kenneth Graunke]

Module: Mesa
Branch: master
Commit: a1a292d17710a2bfb33f798c9f5fda73a5985261
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=a1a292d17710a2bfb33f798c9f5fda73a5985261

Author: Kenneth Graunke <kenneth at whitecape.org>
Date:   Mon Oct  3 23:41:09 2016 -0700

i965: Store a clip_distance_mask field similar to cull_distance_mask.

This isn't useful for legacy GL, but will be used in Vulkan.

Signed-off-by: Kenneth Graunke <kenneth at whitecape.org>
Reviewed-by: Jason Ekstrand <jason at jlekstrand.net>

---

 src/mesa/drivers/dri/i965/brw_compiler.h          | 1 +
 src/mesa/drivers/dri/i965/brw_shader.cpp          | 2 ++
 src/mesa/drivers/dri/i965/brw_vec4.cpp            | 2 ++
 src/mesa/drivers/dri/i965/brw_vec4_gs_visitor.cpp | 2 ++
 4 files changed, 7 insertions(+)

diff --git a/src/mesa/drivers/dri/i965/brw_compiler.h b/src/mesa/drivers/dri/i965/brw_compiler.h
index c2400f9..65a7478 100644
--- a/src/mesa/drivers/dri/i965/brw_compiler.h
+++ b/src/mesa/drivers/dri/i965/brw_compiler.h
@@ -626,6 +626,7 @@ struct brw_vue_prog_data {
    GLuint urb_read_length;
    GLuint total_grf;
 
+   uint32_t clip_distance_mask;
    uint32_t cull_distance_mask;
 
    /* Used for calculating urb partitions.  In the VS, this is the size of the
diff --git a/src/mesa/drivers/dri/i965/brw_shader.cpp b/src/mesa/drivers/dri/i965/brw_shader.cpp
index 8601bb5..bee4d88 100644
--- a/src/mesa/drivers/dri/i965/brw_shader.cpp
+++ b/src/mesa/drivers/dri/i965/brw_shader.cpp
@@ -1376,6 +1376,8 @@ brw_compile_tes(const struct brw_compiler *compiler,
       return NULL;
    }
 
+   prog_data->base.clip_distance_mask =
+      ((1 << nir->info->clip_distance_array_size) - 1);
    prog_data->base.cull_distance_mask =
       ((1 << nir->info->cull_distance_array_size) - 1) <<
       nir->info->clip_distance_array_size;
diff --git a/src/mesa/drivers/dri/i965/brw_vec4.cpp b/src/mesa/drivers/dri/i965/brw_vec4.cpp
index 4da8f6e..b9e592f 100644
--- a/src/mesa/drivers/dri/i965/brw_vec4.cpp
+++ b/src/mesa/drivers/dri/i965/brw_vec4.cpp
@@ -2121,6 +2121,8 @@ brw_compile_vs(const struct brw_compiler *compiler, void *log_data,
 
    const unsigned *assembly = NULL;
 
+   prog_data->base.clip_distance_mask =
+      ((1 << shader->info->clip_distance_array_size) - 1);
    prog_data->base.cull_distance_mask =
       ((1 << shader->info->cull_distance_array_size) - 1) <<
       shader->info->clip_distance_array_size;
diff --git a/src/mesa/drivers/dri/i965/brw_vec4_gs_visitor.cpp b/src/mesa/drivers/dri/i965/brw_vec4_gs_visitor.cpp
index 5e2dcc0..900d9d3 100644
--- a/src/mesa/drivers/dri/i965/brw_vec4_gs_visitor.cpp
+++ b/src/mesa/drivers/dri/i965/brw_vec4_gs_visitor.cpp
@@ -621,6 +621,8 @@ brw_compile_gs(const struct brw_compiler *compiler, void *log_data,
    brw_nir_lower_vue_outputs(shader, is_scalar);
    shader = brw_postprocess_nir(shader, compiler->devinfo, is_scalar);
 
+   prog_data->base.clip_distance_mask =
+      ((1 << shader->info->clip_distance_array_size) - 1);
    prog_data->base.cull_distance_mask =
       ((1 << shader->info->cull_distance_array_size) - 1) <<
       shader->info->clip_distance_array_size;