Mesa (master): ir3: Add support for gl_ViewIndex in VS & FS
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Thu Aug 20 19:36:07 UTC 2020
Module: Mesa
Branch: master
Commit: 5ef960e93cd0321c92c324274c77e7ebf4b1bb86
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=5ef960e93cd0321c92c324274c77e7ebf4b1bb86
Author: Connor Abbott <cwabbott0 at gmail.com>
Date: Wed Jul 1 16:46:22 2020 +0200
ir3: Add support for gl_ViewIndex in VS & FS
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5720>
---
src/freedreno/ir3/ir3_compiler_nir.c | 6 ++++++
src/freedreno/ir3/ir3_context.h | 2 +-
src/freedreno/ir3/ir3_shader.h | 9 +++++++++
3 files changed, 16 insertions(+), 1 deletion(-)
diff --git a/src/freedreno/ir3/ir3_compiler_nir.c b/src/freedreno/ir3/ir3_compiler_nir.c
index c3461c85c7d..8d9d8ef18d1 100644
--- a/src/freedreno/ir3/ir3_compiler_nir.c
+++ b/src/freedreno/ir3/ir3_compiler_nir.c
@@ -1861,6 +1861,12 @@ emit_intrinsic(struct ir3_context *ctx, nir_intrinsic_instr *intr)
}
dst[0] = ctx->base_instance;
break;
+ case nir_intrinsic_load_view_index:
+ if (!ctx->view_index) {
+ ctx->view_index = create_sysval_input(ctx, SYSTEM_VALUE_VIEW_INDEX, 0x1);
+ }
+ dst[0] = ctx->view_index;
+ break;
case nir_intrinsic_load_vertex_id_zero_base:
case nir_intrinsic_load_vertex_id:
if (!ctx->vertex_id) {
diff --git a/src/freedreno/ir3/ir3_context.h b/src/freedreno/ir3/ir3_context.h
index 30caf9d7b85..8cf2922f02c 100644
--- a/src/freedreno/ir3/ir3_context.h
+++ b/src/freedreno/ir3/ir3_context.h
@@ -83,7 +83,7 @@ struct ir3_context {
struct ir3_instruction *frag_face, *frag_coord;
/* For vertex shaders, keep track of the system values sources */
- struct ir3_instruction *vertex_id, *basevertex, *instance_id, *base_instance, *draw_id;
+ struct ir3_instruction *vertex_id, *basevertex, *instance_id, *base_instance, *draw_id, *view_index;
/* For fragment shaders: */
struct ir3_instruction *samp_id, *samp_mask_in;
diff --git a/src/freedreno/ir3/ir3_shader.h b/src/freedreno/ir3/ir3_shader.h
index 99084e22f8c..53be9a6833d 100644
--- a/src/freedreno/ir3/ir3_shader.h
+++ b/src/freedreno/ir3/ir3_shader.h
@@ -851,6 +851,9 @@ struct ir3_shader_linkage {
/* location for fixed-function gl_PrimitiveID passthrough */
uint8_t primid_loc;
+
+ /* location for fixed-function gl_ViewIndex passthrough */
+ uint8_t viewid_loc;
};
static inline void
@@ -891,6 +894,7 @@ ir3_link_shaders(struct ir3_shader_linkage *l,
int j = -1, k;
l->primid_loc = 0xff;
+ l->viewid_loc = 0xff;
while (l->cnt < ARRAY_SIZE(l->var)) {
j = ir3_next_varying(fs, j);
@@ -907,6 +911,11 @@ ir3_link_shaders(struct ir3_shader_linkage *l,
l->primid_loc = fs->inputs[j].inloc;
}
+ if (fs->inputs[j].slot == VARYING_SLOT_VIEW_INDEX) {
+ assert(k < 0);
+ l->viewid_loc = fs->inputs[j].inloc;
+ }
+
ir3_link_add(l, k >= 0 ? vs->outputs[k].regid : default_regid,
fs->inputs[j].compmask, fs->inputs[j].inloc);
}
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