Mesa (gallium-llvmpipe): llvmpipe: Translate logicops.

[Jose Fonseca]

Module: Mesa
Branch: gallium-llvmpipe
Commit: a1fa297fa7a31473e94ea09c21315dff64f8bb4b
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=a1fa297fa7a31473e94ea09c21315dff64f8bb4b

Author: José Fonseca <jfonseca at vmware.com>
Date:   Wed Jul 29 08:29:13 2009 +0100

llvmpipe: Translate logicops.

---

 src/gallium/drivers/llvmpipe/Makefile         |    1 +
 src/gallium/drivers/llvmpipe/SConscript       |    1 +
 src/gallium/drivers/llvmpipe/lp_bld.h         |   13 +++
 src/gallium/drivers/llvmpipe/lp_bld_logicop.c |  100 +++++++++++++++++++++++++
 4 files changed, 115 insertions(+), 0 deletions(-)

diff --git a/src/gallium/drivers/llvmpipe/Makefile b/src/gallium/drivers/llvmpipe/Makefile
index e06bf66..c7af3bf 100644
--- a/src/gallium/drivers/llvmpipe/Makefile
+++ b/src/gallium/drivers/llvmpipe/Makefile
@@ -12,6 +12,7 @@ C_SOURCES = \
 	lp_bld_load.c \
 	lp_bld_store.c \
 	lp_bld_loop.c \
+	lp_bld_logicop.c \
 	lp_clear.c \
 	lp_flush.c \
 	lp_query.c \
diff --git a/src/gallium/drivers/llvmpipe/SConscript b/src/gallium/drivers/llvmpipe/SConscript
index bba283f..128face 100644
--- a/src/gallium/drivers/llvmpipe/SConscript
+++ b/src/gallium/drivers/llvmpipe/SConscript
@@ -15,6 +15,7 @@ llvmpipe = env.ConvenienceLibrary(
 		'lp_bld_load.c',
 		'lp_bld_store.c',
 		'lp_bld_loop.c',
+		'lp_bld_logicop.c',
 		'lp_clear.c',
 		'lp_context.c',
 		'lp_draw_arrays.c',
diff --git a/src/gallium/drivers/llvmpipe/lp_bld.h b/src/gallium/drivers/llvmpipe/lp_bld.h
index 44343f6..e722e0b 100644
--- a/src/gallium/drivers/llvmpipe/lp_bld.h
+++ b/src/gallium/drivers/llvmpipe/lp_bld.h
@@ -115,4 +115,17 @@ lp_build_loop_end(LLVMBuilderRef builder,
                   struct lp_build_loop_state *state);
 
 
+/**
+ * Apply a logic op.
+ *
+ * src/dst parameters are packed values. It should work regardless the inputs
+ * are scalars, or a vector.
+ */
+LLVMValueRef
+lp_build_logicop(LLVMBuilderRef builder,
+                 unsigned logicop_func,
+                 LLVMValueRef src,
+                 LLVMValueRef dst);
+
+
 #endif /* !LP_BLD_H */
diff --git a/src/gallium/drivers/llvmpipe/lp_bld_logicop.c b/src/gallium/drivers/llvmpipe/lp_bld_logicop.c
new file mode 100644
index 0000000..a04544d
--- /dev/null
+++ b/src/gallium/drivers/llvmpipe/lp_bld_logicop.c
@@ -0,0 +1,100 @@
+/**************************************************************************
+ *
+ * Copyright 2009 VMware, Inc.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ **************************************************************************/
+
+
+#include "pipe/p_state.h"
+
+#include "lp_bld.h"
+
+
+LLVMValueRef
+lp_build_logicop(LLVMBuilderRef builder,
+                 unsigned logicop_func,
+                 LLVMValueRef src,
+                 LLVMValueRef dst)
+{
+   LLVMTypeRef type;
+   LLVMValueRef res;
+
+   type = LLVMTypeOf(src);
+
+   switch (logicop_func) {
+   case PIPE_LOGICOP_CLEAR:
+      res = LLVMConstNull(type);
+      break;
+   case PIPE_LOGICOP_NOR:
+      res = LLVMBuildNot(builder, LLVMBuildOr(builder, src, dst, ""), "");
+      break;
+   case PIPE_LOGICOP_AND_INVERTED:
+      res = LLVMBuildAnd(builder, LLVMBuildNot(builder, src, ""), dst, "");
+      break;
+   case PIPE_LOGICOP_COPY_INVERTED:
+      res = LLVMBuildNot(builder, src, "");
+      break;
+   case PIPE_LOGICOP_AND_REVERSE:
+      res = LLVMBuildAnd(builder, src, LLVMBuildNot(builder, dst, ""), "");
+      break;
+   case PIPE_LOGICOP_INVERT:
+      res = LLVMBuildNot(builder, dst, "");
+      break;
+   case PIPE_LOGICOP_XOR:
+      res = LLVMBuildXor(builder, src, dst, "");
+      break;
+   case PIPE_LOGICOP_NAND:
+      res = LLVMBuildNot(builder, LLVMBuildAnd(builder, src, dst, ""), "");
+      break;
+   case PIPE_LOGICOP_AND:
+      res = LLVMBuildAnd(builder, src, dst, "");
+      break;
+   case PIPE_LOGICOP_EQUIV:
+      res = LLVMBuildNot(builder, LLVMBuildXor(builder, src, dst, ""), "");
+      break;
+   case PIPE_LOGICOP_NOOP:
+      res = dst;
+      break;
+   case PIPE_LOGICOP_OR_INVERTED:
+      res = LLVMBuildOr(builder, LLVMBuildNot(builder, src, ""), dst, "");
+      break;
+   case PIPE_LOGICOP_COPY:
+      res = src;
+      break;
+   case PIPE_LOGICOP_OR_REVERSE:
+      res = LLVMBuildOr(builder, src, LLVMBuildNot(builder, dst, ""), "");
+      break;
+   case PIPE_LOGICOP_OR:
+      res = LLVMBuildOr(builder, src, dst, "");
+      break;
+   case PIPE_LOGICOP_SET:
+      res = LLVMConstAllOnes(type);
+      break;
+   default:
+      assert(0);
+      res = src;
+   }
+
+   return res;
+}