--- /dev/null
+/*
+ * Copyright © 2017 Gert Wollny
+ *
+ * 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.
+ */
+
+#include "st_glsl_to_tgsi_temprename.h"
+#include <tgsi/tgsi_info.h>
+#include <tgsi/tgsi_strings.h>
+#include <program/prog_instruction.h>
+#include <limits>
+#include <cstdlib>
+
+/* std::sort is significantly faster than qsort */
+#define USE_STL_SORT
+#ifdef USE_STL_SORT
+#include <algorithm>
+#endif
+
+#ifndef NDEBUG
+#include <iostream>
+#include <iomanip>
+#include <program/prog_print.h>
+#include <util/debug.h>
+using std::cerr;
+using std::setw;
+#endif
+
+using std::numeric_limits;
+
+/* Without c++11 define the nullptr for forward-compatibility
+ * and better readibility */
+#if __cplusplus < 201103L
+#define nullptr 0
+#endif
+
+#ifndef NDEBUG
+/* Helper function to check whether we want to seen debugging output */
+static inline bool is_debug_enabled ()
+{
+ static int debug_enabled = -1;
+ if (debug_enabled < 0)
+ debug_enabled = env_var_as_boolean("GLSL_TO_TGSI_RENAME_DEBUG", false);
+ return debug_enabled > 0;
+}
+#define RENAME_DEBUG(X) if (is_debug_enabled()) do { X; } while (false);
+#else
+#define RENAME_DEBUG(X)
+#endif
+
+namespace {
+
+enum prog_scope_type {
+ outer_scope, /* Outer program scope */
+ loop_body, /* Inside a loop */
+ if_branch, /* Inside if branch */
+ else_branch, /* Inside else branch */
+ switch_body, /* Inside switch statmenet */
+ switch_case_branch, /* Inside switch case statmenet */
+ switch_default_branch, /* Inside switch default statmenet */
+ undefined_scope
+};
+
+class prog_scope {
+public:
+ prog_scope(prog_scope *parent, prog_scope_type type, int id,
+ int depth, int begin);
+
+ prog_scope_type type() const;
+ prog_scope *parent() const;
+ int nesting_depth() const;
+ int id() const;
+ int end() const;
+ int begin() const;
+ int loop_break_line() const;
+
+ const prog_scope *in_ifelse_scope() const;
+ const prog_scope *in_switchcase_scope() const;
+ const prog_scope *innermost_loop() const;
+ const prog_scope *outermost_loop() const;
+ const prog_scope *enclosing_conditional() const;
+
+ bool is_loop() const;
+ bool is_in_loop() const;
+ bool is_conditional() const;
+ bool is_conditional_in_loop() const;
+
+ bool break_is_for_switchcase() const;
+ bool contains_range_of(const prog_scope& other) const;
+ const st_src_reg *switch_register() const;
+
+ void set_end(int end);
+ void set_loop_break_line(int line);
+
+private:
+ prog_scope_type scope_type;
+ int scope_id;
+ int scope_nesting_depth;
+ int scope_begin;
+ int scope_end;
+ int break_loop_line;
+ prog_scope *parent_scope;
+ const st_src_reg *switch_reg;
+};
+
+/* Some storage class to encapsulate the prog_scope (de-)allocations */
+class prog_scope_storage {
+public:
+ prog_scope_storage(void *mem_ctx, int n);
+ ~prog_scope_storage();
+ prog_scope * create(prog_scope *p, prog_scope_type type, int id,
+ int lvl, int s_begin);
+private:
+ void *mem_ctx;
+ int current_slot;
+ prog_scope *storage;
+};
+
+class temp_comp_access {
+public:
+ temp_comp_access();
+ void record_read(int line, prog_scope *scope);
+ void record_write(int line, prog_scope *scope);
+ lifetime get_required_lifetime();
+private:
+ void propagate_lifetime_to_dominant_write_scope();
+
+ prog_scope *last_read_scope;
+ prog_scope *first_read_scope;
+ prog_scope *first_write_scope;
+ int first_write;
+ int last_read;
+ int last_write;
+ int first_read;
+ bool keep_for_full_loop;
+};
+
+class temp_access {
+public:
+ temp_access();
+ void record_read(int line, prog_scope *scope, int swizzle);
+ void record_write(int line, prog_scope *scope, int writemask);
+ lifetime get_required_lifetime();
+private:
+ void update_access_mask(int mask);
+
+ temp_comp_access comp[4];
+ int access_mask;
+ bool needs_component_tracking;
+};
+
+prog_scope_storage::prog_scope_storage(void *mc, int n):
+ mem_ctx(mc),
+ current_slot(0)
+{
+ storage = ralloc_array(mem_ctx, prog_scope, n);
+}
+
+prog_scope_storage::~prog_scope_storage()
+{
+ ralloc_free(storage);
+}
+
+prog_scope*
+prog_scope_storage::create(prog_scope *p, prog_scope_type type, int id,
+ int lvl, int s_begin)
+{
+ storage[current_slot] = prog_scope(p, type, id, lvl, s_begin);
+ return &storage[current_slot++];
+}
+
+prog_scope::prog_scope(prog_scope *parent, prog_scope_type type, int id,
+ int depth, int scope_begin):
+ scope_type(type),
+ scope_id(id),
+ scope_nesting_depth(depth),
+ scope_begin(scope_begin),
+ scope_end(-1),
+ break_loop_line(numeric_limits<int>::max()),
+ parent_scope(parent),
+ switch_reg(nullptr)
+{
+}
+
+prog_scope_type prog_scope::type() const
+{
+ return scope_type;
+}
+
+prog_scope *prog_scope::parent() const
+{
+ return parent_scope;
+}
+
+int prog_scope::nesting_depth() const
+{
+ return scope_nesting_depth;
+}
+
+bool prog_scope::is_loop() const
+{
+ return (scope_type == loop_body);
+}
+
+bool prog_scope::is_in_loop() const
+{
+ if (scope_type == loop_body)
+ return true;
+
+ if (parent_scope)
+ return parent_scope->is_in_loop();
+
+ return false;
+}
+
+bool prog_scope::is_conditional_in_loop() const
+{
+ return is_conditional() && is_in_loop();
+}
+
+const prog_scope *prog_scope::innermost_loop() const
+{
+ if (scope_type == loop_body)
+ return this;
+
+ if (parent_scope)
+ return parent_scope->innermost_loop();
+
+ return nullptr;
+}
+
+const prog_scope *prog_scope::outermost_loop() const
+{
+ const prog_scope *loop = nullptr;
+ const prog_scope *p = this;
+
+ do {
+ if (p->type() == loop_body)
+ loop = p;
+ p = p->parent();
+ } while (p);
+
+ return loop;
+}
+
+const prog_scope *prog_scope::enclosing_conditional() const
+{
+ if (is_conditional())
+ return this;
+
+ if (parent_scope)
+ return parent_scope->enclosing_conditional();
+
+ return nullptr;
+}
+
+bool prog_scope::contains_range_of(const prog_scope& other) const
+{
+ return (begin() <= other.begin()) && (end() >= other.end());
+}
+
+bool prog_scope::is_conditional() const
+{
+ return scope_type == if_branch ||
+ scope_type == else_branch ||
+ scope_type == switch_case_branch ||
+ scope_type == switch_default_branch;
+}
+
+const prog_scope *prog_scope::in_ifelse_scope() const
+{
+ if (scope_type == if_branch ||
+ scope_type == else_branch)
+ return this;
+
+ if (parent_scope)
+ return parent_scope->in_ifelse_scope();
+
+ return nullptr;
+}
+
+const st_src_reg *prog_scope::switch_register() const
+{
+ return switch_reg;
+}
+
+const prog_scope *prog_scope::in_switchcase_scope() const
+{
+ if (scope_type == switch_case_branch ||
+ scope_type == switch_default_branch)
+ return this;
+
+ if (parent_scope)
+ return parent_scope->in_switchcase_scope();
+
+ return nullptr;
+}
+
+bool prog_scope::break_is_for_switchcase() const
+{
+ if (scope_type == loop_body)
+ return false;
+
+ if (scope_type == switch_case_branch ||
+ scope_type == switch_default_branch ||
+ scope_type == switch_body)
+ return true;
+
+ if (parent_scope)
+ return parent_scope->break_is_for_switchcase();
+
+ return false;
+}
+
+int prog_scope::id() const
+{
+ return scope_id;
+}
+
+int prog_scope::begin() const
+{
+ return scope_begin;
+}
+
+int prog_scope::end() const
+{
+ return scope_end;
+}
+
+void prog_scope::set_end(int end)
+{
+ if (scope_end == -1)
+ scope_end = end;
+}
+
+void prog_scope::set_loop_break_line(int line)
+{
+ if (scope_type == loop_body) {
+ break_loop_line = MIN2(break_loop_line, line);
+ } else {
+ if (parent_scope)
+ parent()->set_loop_break_line(line);
+ }
+}
+
+int prog_scope::loop_break_line() const
+{
+ return break_loop_line;
+}
+
+temp_access::temp_access():
+ access_mask(0),
+ needs_component_tracking(false)
+{
+}
+
+void temp_access::update_access_mask(int mask)
+{
+ if (access_mask && access_mask != mask)
+ needs_component_tracking = true;
+ access_mask |= mask;
+}
+
+void temp_access::record_write(int line, prog_scope *scope, int writemask)
+{
+ update_access_mask(writemask);
+
+ if (writemask & WRITEMASK_X)
+ comp[0].record_write(line, scope);
+ if (writemask & WRITEMASK_Y)
+ comp[1].record_write(line, scope);
+ if (writemask & WRITEMASK_Z)
+ comp[2].record_write(line, scope);
+ if (writemask & WRITEMASK_W)
+ comp[3].record_write(line, scope);
+}
+
+void temp_access::record_read(int line, prog_scope *scope, int swizzle)
+{
+ int readmask = 0;
+ for (int idx = 0; idx < 4; ++idx) {
+ int swz = GET_SWZ(swizzle, idx);
+ readmask |= (1 << swz) & 0xF;
+ }
+ update_access_mask(readmask);
+
+ if (readmask & WRITEMASK_X)
+ comp[0].record_read(line, scope);
+ if (readmask & WRITEMASK_Y)
+ comp[1].record_read(line, scope);
+ if (readmask & WRITEMASK_Z)
+ comp[2].record_read(line, scope);
+ if (readmask & WRITEMASK_W)
+ comp[3].record_read(line, scope);
+}
+
+inline static lifetime make_lifetime(int b, int e)
+{
+ lifetime lt;
+ lt.begin = b;
+ lt.end = e;
+ return lt;
+}
+
+lifetime temp_access::get_required_lifetime()
+{
+ lifetime result = make_lifetime(-1, -1);
+
+ unsigned mask = access_mask;
+ while (mask) {
+ unsigned chan = u_bit_scan(&mask);
+ lifetime lt = comp[chan].get_required_lifetime();
+
+ if (lt.begin >= 0) {
+ if ((result.begin < 0) || (result.begin > lt.begin))
+ result.begin = lt.begin;
+ }
+
+ if (lt.end > result.end)
+ result.end = lt.end;
+
+ if (!needs_component_tracking)
+ break;
+ }
+ return result;
+}
+
+temp_comp_access::temp_comp_access():
+ last_read_scope(nullptr),
+ first_read_scope(nullptr),
+ first_write_scope(nullptr),
+ first_write(-1),
+ last_read(-1),
+ last_write(-1),
+ first_read(numeric_limits<int>::max())
+{
+}
+
+void temp_comp_access::record_read(int line, prog_scope *scope)
+{
+ last_read_scope = scope;
+ last_read = line;
+
+ if (first_read > line) {
+ first_read = line;
+ first_read_scope = scope;
+ }
+}
+
+void temp_comp_access::record_write(int line, prog_scope *scope)
+{
+ last_write = line;
+
+ if (first_write < 0) {
+ first_write = line;
+ first_write_scope = scope;
+ }
+}
+
+void temp_comp_access::propagate_lifetime_to_dominant_write_scope()
+{
+ first_write = first_write_scope->begin();
+ int lr = first_write_scope->end();
+
+ if (last_read < lr)
+ last_read = lr;
+}
+
+lifetime temp_comp_access::get_required_lifetime()
+{
+ bool keep_for_full_loop = false;
+
+ /* This register component is not used at all, or only read,
+ * mark it as unused and ignore it when renaming.
+ * glsl_to_tgsi_visitor::renumber_registers will take care of
+ * eliminating registers that are not written to.
+ */
+ if (last_write < 0)
+ return make_lifetime(-1, -1);
+
+ assert(first_write_scope);
+
+ /* Only written to, just make sure the register component is not
+ * reused in the range it is used to write to
+ */
+ if (!last_read_scope)
+ return make_lifetime(first_write, last_write + 1);
+
+ const prog_scope *enclosing_scope_first_read = first_read_scope;
+ const prog_scope *enclosing_scope_first_write = first_write_scope;
+
+ /* We read before writing in a loop
+ * hence the value must survive the loops
+ */
+ if ((first_read <= first_write) &&
+ first_read_scope->is_in_loop()) {
+ keep_for_full_loop = true;
+ enclosing_scope_first_read = first_read_scope->outermost_loop();
+ }
+
+ /* A conditional write within a nested loop must survive
+ * the outermost loop, but only if it is read outside
+ * the condition scope where we write.
+ */
+ const prog_scope *conditional = enclosing_scope_first_write->enclosing_conditional();
+ if (conditional && conditional->is_in_loop() &&
+ !conditional->contains_range_of(*last_read_scope)) {
+ keep_for_full_loop = true;
+ enclosing_scope_first_write = conditional->outermost_loop();
+ }
+
+ /* Evaluate the scope that is shared by all: required first write scope,
+ * required first read before write scope, and last read scope.
+ */
+ const prog_scope *enclosing_scope = enclosing_scope_first_read;
+ if (enclosing_scope_first_write->contains_range_of(*enclosing_scope))
+ enclosing_scope = enclosing_scope_first_write;
+
+ if (enclosing_scope_first_read->contains_range_of(*enclosing_scope))
+ enclosing_scope = enclosing_scope_first_read;
+
+ while (!enclosing_scope->contains_range_of(*enclosing_scope_first_write) ||
+ !enclosing_scope->contains_range_of(*last_read_scope)) {
+ enclosing_scope = enclosing_scope->parent();
+ assert(enclosing_scope);
+ }
+
+ /* Propagate the last read scope to the target scope */
+ while (enclosing_scope->nesting_depth() < last_read_scope->nesting_depth()) {
+ /* If the read is in a loop and we have to move up the scope we need to
+ * extend the life time to the end of this current loop because at this
+ * point we don't know whether the component was written before
+ * un-conditionally in the same loop.
+ */
+ if (last_read_scope->is_loop())
+ last_read = last_read_scope->end();
+
+ last_read_scope = last_read_scope->parent();
+ }
+
+ /* If the variable has to be kept for the whole loop, and we
+ * are currently in a loop, then propagate the life time.
+ */
+ if (keep_for_full_loop && first_write_scope->is_loop())
+ propagate_lifetime_to_dominant_write_scope();
+
+ /* Propagate the first_dominant_write scope to the target scope */
+ while (enclosing_scope->nesting_depth() < first_write_scope->nesting_depth()) {
+ /* Propagate lifetime if there was a break in a loop and the write was
+ * after the break inside that loop. Note, that this is only needed if
+ * we move up in the scopes.
+ */
+ if (first_write_scope->loop_break_line() < first_write) {
+ keep_for_full_loop = true;
+ propagate_lifetime_to_dominant_write_scope();
+ }
+
+ first_write_scope = first_write_scope->parent();
+
+ /* Propagte lifetime if we are now in a loop */
+ if (keep_for_full_loop && first_write_scope->is_loop())
+ propagate_lifetime_to_dominant_write_scope();
+ }
+
+ /* The last write past the last read is dead code, but we have to
+ * ensure that the component is not reused too early, hence extend the
+ * lifetime past the last write.
+ */
+ if (last_write >= last_read)
+ last_read = last_write + 1;
+
+ /* Here we are at the same scope, all is resolved */
+ return make_lifetime(first_write, last_read);
+}
+
+}
+
+#ifndef NDEBUG
+/* Function used for debugging. */
+static void dump_instruction(int line, prog_scope *scope,
+ const glsl_to_tgsi_instruction& inst);
+#endif
+
+/* Scan the program and estimate the required register life times.
+ * The array lifetimes must be pre-allocated
+ */
+void
+get_temp_registers_required_lifetimes(void *mem_ctx, exec_list *instructions,
+ int ntemps, struct lifetime *lifetimes)
+{
+ int line = 0;
+ int loop_id = 0;
+ int if_id = 0;
+ int switch_id = 0;
+ bool is_at_end = false;
+ int n_scopes = 1;
+
+ /* Count scopes to allocate the needed space without the need for
+ * re-allocation
+ */
+ foreach_in_list(glsl_to_tgsi_instruction, inst, instructions) {
+ if (inst->op == TGSI_OPCODE_BGNLOOP ||
+ inst->op == TGSI_OPCODE_SWITCH ||
+ inst->op == TGSI_OPCODE_CASE ||
+ inst->op == TGSI_OPCODE_IF ||
+ inst->op == TGSI_OPCODE_UIF ||
+ inst->op == TGSI_OPCODE_ELSE ||
+ inst->op == TGSI_OPCODE_DEFAULT)
+ ++n_scopes;
+ }
+
+ prog_scope_storage scopes(mem_ctx, n_scopes);
+ temp_access *acc = new temp_access[ntemps];
+
+ prog_scope *cur_scope = scopes.create(nullptr, outer_scope, 0, 0, line);
+
+ RENAME_DEBUG(cerr << "========= Begin shader ============\n");
+
+ foreach_in_list(glsl_to_tgsi_instruction, inst, instructions) {
+ if (is_at_end) {
+ assert(!"GLSL_TO_TGSI: shader has instructions past end marker");
+ break;
+ }
+
+ RENAME_DEBUG(dump_instruction(line, cur_scope, *inst));
+
+ switch (inst->op) {
+ case TGSI_OPCODE_BGNLOOP: {
+ cur_scope = scopes.create(cur_scope, loop_body, loop_id++,
+ cur_scope->nesting_depth() + 1, line);
+ break;
+ }
+ case TGSI_OPCODE_ENDLOOP: {
+ cur_scope->set_end(line);
+ cur_scope = cur_scope->parent();
+ assert(cur_scope);
+ break;
+ }
+ case TGSI_OPCODE_IF:
+ case TGSI_OPCODE_UIF: {
+ assert(num_inst_src_regs(inst) == 1);
+ const st_src_reg& src = inst->src[0];
+ if (src.file == PROGRAM_TEMPORARY)
+ acc[src.index].record_read(line, cur_scope, src.swizzle);
+ cur_scope = scopes.create(cur_scope, if_branch, if_id++,
+ cur_scope->nesting_depth() + 1, line + 1);
+ break;
+ }
+ case TGSI_OPCODE_ELSE: {
+ assert(cur_scope->type() == if_branch);
+ cur_scope->set_end(line - 1);
+ cur_scope = scopes.create(cur_scope->parent(), else_branch,
+ cur_scope->id(), cur_scope->nesting_depth(),
+ line + 1);
+ break;
+ }
+ case TGSI_OPCODE_END: {
+ cur_scope->set_end(line);
+ is_at_end = true;
+ break;
+ }
+ case TGSI_OPCODE_ENDIF: {
+ cur_scope->set_end(line - 1);
+ cur_scope = cur_scope->parent();
+ assert(cur_scope);
+ break;
+ }
+ case TGSI_OPCODE_SWITCH: {
+ assert(num_inst_src_regs(inst) == 1);
+ const st_src_reg& src = inst->src[0];
+ prog_scope *scope = scopes.create(cur_scope, switch_body, switch_id++,
+ cur_scope->nesting_depth() + 1, line);
+ /* We record the read only for the SWITCH statement itself, like it
+ * is used by the only consumer of TGSI_OPCODE_SWITCH in tgsi_exec.c.
+ */
+ if (src.file == PROGRAM_TEMPORARY)
+ acc[src.index].record_read(line, cur_scope, src.swizzle);
+ cur_scope = scope;
+ break;
+ }
+ case TGSI_OPCODE_ENDSWITCH: {
+ cur_scope->set_end(line - 1);
+ /* Remove the case level, it might not have been
+ * closed with a break.
+ */
+ if (cur_scope->type() != switch_body)
+ cur_scope = cur_scope->parent();
+
+ cur_scope = cur_scope->parent();
+ assert(cur_scope);
+ break;
+ }
+ case TGSI_OPCODE_CASE: {
+ /* Take care of tracking the registers. */
+ prog_scope *switch_scope = cur_scope->type() == switch_body ?
+ cur_scope : cur_scope->parent();
+
+ assert(num_inst_src_regs(inst) == 1);
+ const st_src_reg& src = inst->src[0];
+ if (src.file == PROGRAM_TEMPORARY)
+ acc[src.index].record_read(line, switch_scope, src.swizzle);
+
+ /* Fall through to allocate the scope. */
+ }
+ case TGSI_OPCODE_DEFAULT: {
+ prog_scope_type t = inst->op == TGSI_OPCODE_CASE ? switch_case_branch
+ : switch_default_branch;
+ prog_scope *switch_scope = (cur_scope->type() == switch_body) ?
+ cur_scope : cur_scope->parent();
+ assert(switch_scope->type() == switch_body);
+ prog_scope *scope = scopes.create(switch_scope, t,
+ switch_scope->id(),
+ switch_scope->nesting_depth() + 1,
+ line);
+ /* Previous case falls through, so scope was not yet closed. */
+ if ((cur_scope != switch_scope) && (cur_scope->end() == -1))
+ cur_scope->set_end(line - 1);
+ cur_scope = scope;
+ break;
+ }
+ case TGSI_OPCODE_BRK: {
+ if (cur_scope->break_is_for_switchcase()) {
+ cur_scope->set_end(line - 1);
+ } else {
+ cur_scope->set_loop_break_line(line);
+ }
+ break;
+ }
+ default: {
+ for (unsigned j = 0; j < num_inst_src_regs(inst); j++) {
+ const st_src_reg& src = inst->src[j];
+ if (src.file == PROGRAM_TEMPORARY)
+ acc[src.index].record_read(line, cur_scope, src.swizzle);
+ }
+ for (unsigned j = 0; j < inst->tex_offset_num_offset; j++) {
+ const st_src_reg& src = inst->tex_offsets[j];
+ if (src.file == PROGRAM_TEMPORARY)
+ acc[src.index].record_read(line, cur_scope, src.swizzle);
+ }
+ for (unsigned j = 0; j < num_inst_dst_regs(inst); j++) {
+ const st_dst_reg& dst = inst->dst[j];
+ if (dst.file == PROGRAM_TEMPORARY)
+ acc[dst.index].record_write(line, cur_scope, dst.writemask);
+ }
+ }
+ }
+ ++line;
+ }
+
+ RENAME_DEBUG(cerr << "==================================\n\n");
+
+ /* Make sure last scope is closed, even though no
+ * TGSI_OPCODE_END was given.
+ */
+ if (cur_scope->end() < 0)
+ cur_scope->set_end(line - 1);
+
+ RENAME_DEBUG(cerr << "========= lifetimes ==============\n");
+ for(int i = 0; i < ntemps; ++i) {
+ RENAME_DEBUG(cerr << setw(4) << i);
+ lifetimes[i] = acc[i].get_required_lifetime();
+ RENAME_DEBUG(cerr << ": [" << lifetimes[i].begin << ", "
+ << lifetimes[i].end << "]\n");
+ }
+ RENAME_DEBUG(cerr << "==================================\n\n");
+
+ delete[] acc;
+}
+
+/* Code below used for debugging */
+#ifndef NDEBUG
+static const char swizzle_txt[] = "xyzw";
+
+static const char *tgsi_file_names[PROGRAM_FILE_MAX] = {
+ "TEMP", "ARRAY", "IN", "OUT", "STATE", "CONST",
+ "UNIFORM", "WO", "ADDR", "SAMPLER", "SV", "UNDEF",
+ "IMM", "BUF", "MEM", "IMAGE"
+};
+
+static
+void dump_instruction(int line, prog_scope *scope,
+ const glsl_to_tgsi_instruction& inst)
+{
+ const struct tgsi_opcode_info *info = tgsi_get_opcode_info(inst.op);
+
+ int indent = scope->nesting_depth();
+ if ((scope->type() == switch_case_branch ||
+ scope->type() == switch_default_branch) &&
+ (info->opcode == TGSI_OPCODE_CASE ||
+ info->opcode == TGSI_OPCODE_DEFAULT))
+ --indent;
+
+ if (info->opcode == TGSI_OPCODE_ENDIF ||
+ info->opcode == TGSI_OPCODE_ELSE ||
+ info->opcode == TGSI_OPCODE_ENDLOOP ||
+ info->opcode == TGSI_OPCODE_ENDSWITCH)
+ --indent;
+
+ cerr << setw(4) << line << ": ";
+ for (int i = 0; i < indent; ++i)
+ cerr << " ";
+ cerr << tgsi_get_opcode_name(info->opcode) << " ";
+
+ bool has_operators = false;
+ for (unsigned j = 0; j < num_inst_dst_regs(&inst); j++) {
+ has_operators = true;
+ if (j > 0)
+ cerr << ", ";
+
+ const st_dst_reg& dst = inst.dst[j];
+ cerr << tgsi_file_names[dst.file];
+
+ if (dst.file == PROGRAM_ARRAY)
+ cerr << "(" << dst.array_id << ")";
+
+ cerr << "[" << dst.index << "]";
+
+ if (dst.writemask != TGSI_WRITEMASK_XYZW) {
+ cerr << ".";
+ if (dst.writemask & TGSI_WRITEMASK_X) cerr << "x";
+ if (dst.writemask & TGSI_WRITEMASK_Y) cerr << "y";
+ if (dst.writemask & TGSI_WRITEMASK_Z) cerr << "z";
+ if (dst.writemask & TGSI_WRITEMASK_W) cerr << "w";
+ }
+ }
+ if (has_operators)
+ cerr << " := ";
+
+ for (unsigned j = 0; j < num_inst_src_regs(&inst); j++) {
+ if (j > 0)
+ cerr << ", ";
+
+ const st_src_reg& src = inst.src[j];
+ cerr << tgsi_file_names[src.file]
+ << "[" << src.index << "]";
+ if (src.swizzle != SWIZZLE_XYZW) {
+ cerr << ".";
+ for (int idx = 0; idx < 4; ++idx) {
+ int swz = GET_SWZ(src.swizzle, idx);
+ if (swz < 4) {
+ cerr << swizzle_txt[swz];
+ }
+ }
+ }
+ }
+
+ if (inst.tex_offset_num_offset > 0) {
+ cerr << ", TEXOFS: ";
+ for (unsigned j = 0; j < inst.tex_offset_num_offset; j++) {
+ if (j > 0)
+ cerr << ", ";
+
+ const st_src_reg& src = inst.tex_offsets[j];
+ cerr << tgsi_file_names[src.file]
+ << "[" << src.index << "]";
+ if (src.swizzle != SWIZZLE_XYZW) {
+ cerr << ".";
+ for (int idx = 0; idx < 4; ++idx) {
+ int swz = GET_SWZ(src.swizzle, idx);
+ if (swz < 4) {
+ cerr << swizzle_txt[swz];
+ }
+ }
+ }
+ }
+ }
+ cerr << "\n";
+}
+#endif
projects / mesa.git / commitdiff