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-rw-r--r--src/mesa/pipe/tgsi/util/tgsi_transform.c199
-rw-r--r--src/mesa/pipe/tgsi/util/tgsi_transform.h93
2 files changed, 292 insertions, 0 deletions
diff --git a/src/mesa/pipe/tgsi/util/tgsi_transform.c b/src/mesa/pipe/tgsi/util/tgsi_transform.c
new file mode 100644
index 00000000000..357f77b05a6
--- /dev/null
+++ b/src/mesa/pipe/tgsi/util/tgsi_transform.c
@@ -0,0 +1,199 @@
+/**************************************************************************
+ *
+ * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * 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 TUNGSTEN GRAPHICS 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.
+ *
+ **************************************************************************/
+
+/**
+ * TGSI program transformation utility.
+ *
+ * Authors: Brian Paul
+ */
+
+
+#include "tgsi_transform.h"
+
+
+
+static void
+emit_instruction(struct tgsi_transform_context *ctx,
+ const struct tgsi_full_instruction *inst)
+{
+ uint ti = ctx->ti;
+
+ ti += tgsi_build_full_instruction(inst,
+ ctx->tokens_out + ti,
+ ctx->header,
+ ctx->max_tokens_out - ti);
+ ctx->ti = ti;
+}
+
+
+static void
+emit_declaration(struct tgsi_transform_context *ctx,
+ const struct tgsi_full_declaration *decl)
+{
+ uint ti = ctx->ti;
+
+ ti += tgsi_build_full_declaration(decl,
+ ctx->tokens_out + ti,
+ ctx->header,
+ ctx->max_tokens_out - ti);
+ ctx->ti = ti;
+}
+
+
+static void
+emit_immediate(struct tgsi_transform_context *ctx,
+ const struct tgsi_full_immediate *imm)
+{
+ uint ti = ctx->ti;
+
+ ti += tgsi_build_full_immediate(imm,
+ ctx->tokens_out + ti,
+ ctx->header,
+ ctx->max_tokens_out - ti);
+ ctx->ti = ti;
+}
+
+
+
+/**
+ * Apply user-defined transformations to the input shader to produce
+ * the output shader.
+ * For example, a register search-and-replace operation could be applied
+ * by defining a transform_instruction() callback that examined and changed
+ * the instruction src/dest regs.
+ *
+ * \return number of tokens emitted
+ */
+int
+tgsi_transform_shader(const struct tgsi_token *tokens_in,
+ struct tgsi_token *tokens_out,
+ uint max_tokens_out,
+ struct tgsi_transform_context *ctx)
+{
+ uint procType;
+
+ /* input shader */
+ struct tgsi_parse_context parse;
+
+ /* output shader */
+ struct tgsi_processor *processor;
+
+
+ /**
+ ** callback context init
+ **/
+ ctx->emit_instruction = emit_instruction;
+ ctx->emit_declaration = emit_declaration;
+ ctx->emit_immediate = emit_immediate;
+ ctx->tokens_out = tokens_out;
+ ctx->max_tokens_out = max_tokens_out;
+
+
+ /**
+ ** Setup to begin parsing input shader
+ **/
+ if (tgsi_parse_init( &parse, tokens_in ) != TGSI_PARSE_OK) {
+ debug_printf("tgsi_parse_init() failed in tgsi_transform_shader()!\n");
+ return -1;
+ }
+ procType = parse.FullHeader.Processor.Processor;
+ assert(procType == TGSI_PROCESSOR_FRAGMENT ||
+ procType == TGSI_PROCESSOR_VERTEX ||
+ procType == TGSI_PROCESSOR_GEOMETRY);
+
+
+ /**
+ ** Setup output shader
+ **/
+ *(struct tgsi_version *) &tokens_out[0] = tgsi_build_version();
+
+ ctx->header = (struct tgsi_header *) (tokens_out + 1);
+ *ctx->header = tgsi_build_header();
+
+ processor = (struct tgsi_processor *) (tokens_out + 2);
+ *processor = tgsi_build_processor( procType, ctx->header );
+
+ ctx->ti = 3;
+
+
+ /**
+ ** Loop over incoming program tokens/instructions
+ */
+ while( !tgsi_parse_end_of_tokens( &parse ) ) {
+
+ tgsi_parse_token( &parse );
+
+ switch( parse.FullToken.Token.Type ) {
+ case TGSI_TOKEN_TYPE_INSTRUCTION:
+ {
+ struct tgsi_full_instruction *fullinst
+ = &parse.FullToken.FullInstruction;
+
+ if (ctx->transform_instruction)
+ ctx->transform_instruction(ctx, fullinst);
+ else
+ ctx->emit_instruction(ctx, fullinst);
+ }
+ break;
+
+ case TGSI_TOKEN_TYPE_DECLARATION:
+ {
+ struct tgsi_full_declaration *fulldecl
+ = &parse.FullToken.FullDeclaration;
+
+ if (ctx->transform_declaration)
+ ctx->transform_declaration(ctx, fulldecl);
+ else
+ ctx->emit_declaration(ctx, fulldecl);
+ }
+ break;
+
+ case TGSI_TOKEN_TYPE_IMMEDIATE:
+ {
+ struct tgsi_full_immediate *fullimm
+ = &parse.FullToken.FullImmediate;
+
+ if (ctx->transform_immediate)
+ ctx->transform_immediate(ctx, fullimm);
+ else
+ ctx->emit_immediate(ctx, fullimm);
+ }
+ break;
+
+ default:
+ assert( 0 );
+ }
+ }
+
+ if (ctx->epilog) {
+ ctx->epilog(ctx);
+ }
+
+ tgsi_parse_free (&parse);
+
+ return ctx->ti;
+}
diff --git a/src/mesa/pipe/tgsi/util/tgsi_transform.h b/src/mesa/pipe/tgsi/util/tgsi_transform.h
new file mode 100644
index 00000000000..365d8c298c7
--- /dev/null
+++ b/src/mesa/pipe/tgsi/util/tgsi_transform.h
@@ -0,0 +1,93 @@
+/**************************************************************************
+ *
+ * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * 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 TUNGSTEN GRAPHICS 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.
+ *
+ **************************************************************************/
+
+#ifndef TGSI_TRANSFORM_H
+#define TGSI_TRANSFORM_H
+
+
+#include "pipe/p_util.h"
+#include "pipe/p_shader_tokens.h"
+#include "pipe/tgsi/util/tgsi_parse.h"
+#include "pipe/tgsi/util/tgsi_build.h"
+
+
+
+/**
+ * Subclass this to add caller-specific data
+ */
+struct tgsi_transform_context
+{
+/**** PUBLIC ***/
+
+ /**
+ * User-defined callbacks invoked per instruction.
+ */
+ void (*transform_instruction)(struct tgsi_transform_context *ctx,
+ struct tgsi_full_instruction *inst);
+
+ void (*transform_declaration)(struct tgsi_transform_context *ctx,
+ struct tgsi_full_declaration *decl);
+
+ void (*transform_immediate)(struct tgsi_transform_context *ctx,
+ struct tgsi_full_immediate *imm);
+
+ /**
+ * Called at end of input program to allow caller to append extra
+ * instructions. Return number of tokens emitted.
+ */
+ void (*epilog)(struct tgsi_transform_context *ctx);
+
+
+/*** PRIVATE ***/
+
+ /**
+ * These are setup by tgsi_transform_shader() and cannot be overridden.
+ * Meant to be called from in the above user callback functions.
+ */
+ void (*emit_instruction)(struct tgsi_transform_context *ctx,
+ const struct tgsi_full_instruction *inst);
+ void (*emit_declaration)(struct tgsi_transform_context *ctx,
+ const struct tgsi_full_declaration *decl);
+ void (*emit_immediate)(struct tgsi_transform_context *ctx,
+ const struct tgsi_full_immediate *imm);
+
+ struct tgsi_header *header;
+ uint max_tokens_out;
+ struct tgsi_token *tokens_out;
+ uint ti;
+};
+
+
+
+extern int
+tgsi_transform_shader(const struct tgsi_token *tokens_in,
+ struct tgsi_token *tokens_out,
+ uint max_tokens_out,
+ struct tgsi_transform_context *ctx);
+
+
+#endif /* TGSI_TRANSFORM_H */
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