i965: Enable the GL_ARB_shader_bit_encode extension.

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

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 2634b0862a..12745f2310 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 cfffef4460..bde84202df 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 6c29aff652..29da36ce7b 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;