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pan/mdg: Implement gl_SampleID

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Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5929>
This commit is contained in:
Alyssa Rosenzweig 2020-07-15 09:56:24 -04:00 • committed by Marge Bot
parent b2749c141d
commit da2eed36f3
1 changed files with 20 additions and 0 deletions
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20
src/panfrost/midgard/midgard_compile.c
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@ -1635,6 +1635,22 @@ emit_vertex_builtin(compiler_context *ctx, nir_intrinsic_instr *instr)
emit_attr_read(ctx, reg, vertex_builtin_arg(instr->intrinsic), 1, nir_type_int);
}
static void
emit_msaa_builtin(compiler_context *ctx, nir_intrinsic_instr *instr)
{
unsigned reg = nir_dest_index(&instr->dest);
midgard_instruction ld = m_ld_color_buffer_32u(reg, 0);
ld.load_store.op = midgard_op_ld_color_buffer_32u_old;
ld.load_store.address = 97;
ld.load_store.arg_2 = 0x1E;
for (int i = 0; i < 4; ++i)
ld.swizzle[0][i] = COMPONENT_X;
emit_mir_instruction(ctx, ld);
}
static void
emit_control_barrier(compiler_context *ctx)
{
@ -2015,6 +2031,10 @@ emit_intrinsic(compiler_context *ctx, nir_intrinsic_instr *instr)
emit_vertex_builtin(ctx, instr);
break;
case nir_intrinsic_load_sample_id:
emit_msaa_builtin(ctx, instr);
break;
case nir_intrinsic_memory_barrier_buffer:
case nir_intrinsic_memory_barrier_shared:
break;