---
src/mesa/drivers/dri/i965/brw_fs.h | 2 ++
src/mesa/drivers/dri/i965/brw_fs_visitor.cpp | 12 ++++++++++++
src/mesa/drivers/dri/i965/brw_vec4.h | 3 +++
src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp | 11 +++++++++++
4 files changed, 28 insertions(+)
diff --git a/src/mesa/drivers/dri/i965/brw_fs.h
b/src/mesa/drivers/dri/i965/brw_fs.h
index 6e5fa1d..df6b825 100644
--- a/src/mesa/drivers/dri/i965/brw_fs.h
+++ b/src/mesa/drivers/dri/i965/brw_fs.h
@@ -306,6 +306,8 @@ public:
const fs_reg &a);
void emit_minmax(enum brw_conditional_mod conditionalmod, const fs_reg &dst,
const fs_reg &src0, const fs_reg &src1);
+ /** Copy any live channel from \p src to the first channel of \p dst. */
+ void emit_uniformize(const fs_reg &dst, const fs_reg &src);
bool try_emit_saturate(ir_expression *ir);
bool try_emit_line(ir_expression *ir);
bool try_emit_mad(ir_expression *ir);
diff --git a/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp
b/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp
index 4b48f2d..6f1ff20 100644
--- a/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp
@@ -337,6 +337,18 @@ fs_visitor::emit_minmax(enum brw_conditional_mod
conditionalmod, const fs_reg &d
}
}
+void
+fs_visitor::emit_uniformize(const fs_reg &dst, const fs_reg &src)
+{
+ const fs_reg chan_index = vgrf(glsl_type::uint_type);
+
+ emit(SHADER_OPCODE_FIND_LIVE_CHANNEL, component(chan_index, 0))
+ ->force_writemask_all = true;
+ emit(SHADER_OPCODE_BROADCAST, component(dst, 0),
+ src, component(chan_index, 0))
+ ->force_writemask_all = true;
+}
+
bool
fs_visitor::try_emit_saturate(ir_expression *ir)
{
diff --git a/src/mesa/drivers/dri/i965/brw_vec4.h
b/src/mesa/drivers/dri/i965/brw_vec4.h
index 7a92d59..adb5fe4 100644
--- a/src/mesa/drivers/dri/i965/brw_vec4.h
+++ b/src/mesa/drivers/dri/i965/brw_vec4.h
@@ -298,6 +298,9 @@ public:
void emit_lrp(const dst_reg &dst,
const src_reg &x, const src_reg &y, const src_reg &a);
+ /** Copy any live channel from \p src to the first channel of \p dst. */
+ void emit_uniformize(const dst_reg &dst, const src_reg &src);
+
void emit_block_move(dst_reg *dst, src_reg *src,
const struct glsl_type *type, brw_predicate predicate);
diff --git a/src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp
b/src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp
index f6f589d..4515fc7 100644
--- a/src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp
+++ b/src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp
@@ -1304,6 +1304,17 @@ vec4_visitor::emit_lrp(const dst_reg &dst,
}
void
+vec4_visitor::emit_uniformize(const dst_reg &dst, const src_reg &src)
+{
+ const src_reg chan_index(this, glsl_type::uint_type);
+
+ emit(SHADER_OPCODE_FIND_LIVE_CHANNEL, dst_reg(chan_index))
+ ->force_writemask_all = true;
+ emit(SHADER_OPCODE_BROADCAST, dst, src, chan_index)
+ ->force_writemask_all = true;
+}
+
+void
vec4_visitor::visit(ir_expression *ir)
{
unsigned int operand;
--
2.1.3
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