nouveau: codegen: Use FILE_MEMORY_BUFFER for buffers

Some of the lowering steps we currently do for FILE_MEMORY_GLOBAL only
apply to buffers, making it impossible to use FILE_MEMORY_GLOBAL for
OpenCL global buffers.

This commits changes the buffer code to use FILE_MEMORY_BUFFER at the
ir_from_tgsi and lowering steps, freeing use of FILE_MEMORY_GLOBAL
for use with OpenCL global buffers.

Note that after lowering buffer accesses use the FILE_MEMORY_GLOBAL
register file.

Tested with piglet on a gf119 and a gk107:
./piglit run -o shader -t '.*arb_shader_storage_buffer_object.*' results/shader
[9/9] pass: 9 /
./piglit run -o shader -t '.*arb_compute_shader.*' results/shader
[20/20] skip: 4, pass: 16 |

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/src/gallium/drivers/nouveau/codegen/nv50_ir_target_nvc0.cpp b/src/gallium/drivers/nouveau/codegen/nv50_ir_target_nvc0.cpp
index a03afa8..9e1e7bf 100644
--- a/src/gallium/drivers/nouveau/codegen/nv50_ir_target_nvc0.cpp
+++ b/src/gallium/drivers/nouveau/codegen/nv50_ir_target_nvc0.cpp
@@ -248,6 +248,7 @@ TargetNVC0::getFileSize(DataFile file) const
    case FILE_MEMORY_CONST:  return 65536;
    case FILE_SHADER_INPUT:  return 0x400;
    case FILE_SHADER_OUTPUT: return 0x400;
+   case FILE_MEMORY_BUFFER: return 0xffffffff;
    case FILE_MEMORY_GLOBAL: return 0xffffffff;
    case FILE_MEMORY_SHARED: return 16 << 10;
    case FILE_MEMORY_LOCAL:  return 48 << 10;