Mesa (master): i965: Enable the GL_ARB_shader_bit_encode extension.

[Kenneth Graunke]

Module: Mesa
Branch: master
Commit: 05790746df077183d6c3caf87ca2d276a60302a8
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=05790746df077183d6c3caf87ca2d276a60302a8

Author: Kenneth Graunke <kenneth at whitecape.org>
Date:   Thu Jun  7 00:11:28 2012 -0700

i965: Enable the GL_ARB_shader_bit_encode extension.

Signed-off-by: Kenneth Graunke <kenneth at whitecape.org>

---

 src/mesa/drivers/dri/i965/brw_fs_visitor.cpp   |    7 +++++++
 src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp |   17 +++++++++++++++++
 src/mesa/drivers/dri/intel/intel_extensions.c  |    1 +
 3 files changed, 25 insertions(+), 0 deletions(-)

diff --git a/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp b/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp
index 2634b08..12745f2 100644
--- a/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp
@@ -445,11 +445,18 @@ fs_visitor::visit(ir_expression *ir)
       emit_math(SHADER_OPCODE_RSQ, this->result, op[0]);
       break;
 
+   case ir_unop_bitcast_i2f:
+   case ir_unop_bitcast_u2f:
+      op[0].type = BRW_REGISTER_TYPE_F;
+      this->result = op[0];
+      break;
    case ir_unop_i2u:
+   case ir_unop_bitcast_f2u:
       op[0].type = BRW_REGISTER_TYPE_UD;
       this->result = op[0];
       break;
    case ir_unop_u2i:
+   case ir_unop_bitcast_f2i:
       op[0].type = BRW_REGISTER_TYPE_D;
       this->result = op[0];
       break;
diff --git a/src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp b/src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp
index cfffef4..bde8420 100644
--- a/src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp
+++ b/src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp
@@ -1254,6 +1254,23 @@ vec4_visitor::visit(ir_expression *ir)
    case ir_unop_rsq:
       emit_math(SHADER_OPCODE_RSQ, result_dst, op[0]);
       break;
+
+   case ir_unop_bitcast_i2f:
+   case ir_unop_bitcast_u2f:
+      this->result = op[0];
+      this->result.type = BRW_REGISTER_TYPE_F;
+      break;
+
+   case ir_unop_bitcast_f2i:
+      this->result = op[0];
+      this->result.type = BRW_REGISTER_TYPE_D;
+      break;
+
+   case ir_unop_bitcast_f2u:
+      this->result = op[0];
+      this->result.type = BRW_REGISTER_TYPE_UD;
+      break;
+
    case ir_unop_i2f:
    case ir_unop_i2u:
    case ir_unop_u2i:
diff --git a/src/mesa/drivers/dri/intel/intel_extensions.c b/src/mesa/drivers/dri/intel/intel_extensions.c
index 6c29aff..29da36c 100755
--- a/src/mesa/drivers/dri/intel/intel_extensions.c
+++ b/src/mesa/drivers/dri/intel/intel_extensions.c
@@ -122,6 +122,7 @@ intelInitExtensions(struct gl_context *ctx)
       ctx->Extensions.ARB_occlusion_query = true;
       ctx->Extensions.ARB_point_sprite = true;
       ctx->Extensions.ARB_seamless_cube_map = true;
+      ctx->Extensions.ARB_shader_bit_encoding = true;
       ctx->Extensions.ARB_shader_texture_lod = true;
 #ifdef TEXTURE_FLOAT_ENABLED
       ctx->Extensions.ARB_texture_float = true;