diff options
Diffstat (limited to 'mesalib/src/glsl/opt_swizzle_swizzle.cpp')
-rw-r--r-- | mesalib/src/glsl/opt_swizzle_swizzle.cpp | 188 |
1 files changed, 95 insertions, 93 deletions
diff --git a/mesalib/src/glsl/opt_swizzle_swizzle.cpp b/mesalib/src/glsl/opt_swizzle_swizzle.cpp index e23655240..8d0e1051d 100644 --- a/mesalib/src/glsl/opt_swizzle_swizzle.cpp +++ b/mesalib/src/glsl/opt_swizzle_swizzle.cpp @@ -1,93 +1,95 @@ -/*
- * Copyright © 2010 Intel Corporation
- *
- * 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, sublicense,
- * 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 NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS 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.
- */
-
-/**
- * \file opt_swizzle_swizzle.cpp
- *
- * Eliminates the second swizzle in a swizzle chain.
- */
-
-#include "ir.h"
-#include "ir_visitor.h"
-#include "ir_optimization.h"
-#include "glsl_types.h"
-
-class ir_swizzle_swizzle_visitor : public ir_hierarchical_visitor {
-public:
- ir_swizzle_swizzle_visitor()
- {
- progress = false;
- }
-
- virtual ir_visitor_status visit_enter(ir_swizzle *);
-
- bool progress;
-};
-
-ir_visitor_status
-ir_swizzle_swizzle_visitor::visit_enter(ir_swizzle *ir)
-{
- int mask2[4];
-
- ir_swizzle *swiz2 = ir->val->as_swizzle();
- if (!swiz2)
- return visit_continue;
-
- memset(&mask2, 0, sizeof(mask2));
- if (swiz2->mask.num_components >= 1)
- mask2[0] = swiz2->mask.x;
- if (swiz2->mask.num_components >= 2)
- mask2[1] = swiz2->mask.y;
- if (swiz2->mask.num_components >= 3)
- mask2[2] = swiz2->mask.z;
- if (swiz2->mask.num_components >= 4)
- mask2[3] = swiz2->mask.w;
-
- if (ir->mask.num_components >= 1)
- ir->mask.x = mask2[ir->mask.x];
- if (ir->mask.num_components >= 2)
- ir->mask.y = mask2[ir->mask.y];
- if (ir->mask.num_components >= 3)
- ir->mask.z = mask2[ir->mask.z];
- if (ir->mask.num_components >= 4)
- ir->mask.w = mask2[ir->mask.w];
-
- ir->val = swiz2->val;
-
- this->progress = true;
-
- return visit_continue;
-}
-
-/**
- * Does a copy propagation pass on the code present in the instruction stream.
- */
-bool
-do_swizzle_swizzle(exec_list *instructions)
-{
- ir_swizzle_swizzle_visitor v;
-
- v.run(instructions);
-
- return v.progress;
-}
+/* + * Copyright © 2010 Intel Corporation + * + * 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, sublicense, + * 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 NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS 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. + */ + +/** + * \file opt_swizzle_swizzle.cpp + * + * Eliminates the second swizzle in a swizzle chain. + */ + +#include "ir.h" +#include "ir_visitor.h" +#include "ir_optimization.h" +#include "glsl_types.h" + +using std::memset; + +class ir_swizzle_swizzle_visitor : public ir_hierarchical_visitor { +public: + ir_swizzle_swizzle_visitor() + { + progress = false; + } + + virtual ir_visitor_status visit_enter(ir_swizzle *); + + bool progress; +}; + +ir_visitor_status +ir_swizzle_swizzle_visitor::visit_enter(ir_swizzle *ir) +{ + int mask2[4]; + + ir_swizzle *swiz2 = ir->val->as_swizzle(); + if (!swiz2) + return visit_continue; + + memset(&mask2, 0, sizeof(mask2)); + if (swiz2->mask.num_components >= 1) + mask2[0] = swiz2->mask.x; + if (swiz2->mask.num_components >= 2) + mask2[1] = swiz2->mask.y; + if (swiz2->mask.num_components >= 3) + mask2[2] = swiz2->mask.z; + if (swiz2->mask.num_components >= 4) + mask2[3] = swiz2->mask.w; + + if (ir->mask.num_components >= 1) + ir->mask.x = mask2[ir->mask.x]; + if (ir->mask.num_components >= 2) + ir->mask.y = mask2[ir->mask.y]; + if (ir->mask.num_components >= 3) + ir->mask.z = mask2[ir->mask.z]; + if (ir->mask.num_components >= 4) + ir->mask.w = mask2[ir->mask.w]; + + ir->val = swiz2->val; + + this->progress = true; + + return visit_continue; +} + +/** + * Does a copy propagation pass on the code present in the instruction stream. + */ +bool +do_swizzle_swizzle(exec_list *instructions) +{ + ir_swizzle_swizzle_visitor v; + + v.run(instructions); + + return v.progress; +} |