/*
* Mesa 3-D graphics library
- * Version: 6.5.3
+ * Version: 7.1
*
* Copyright (C) 2005-2007 Brian Paul All Rights Reserved.
*
-#include "imports.h"
-#include "macros.h"
-#include "mtypes.h"
-#include "program.h"
-#include "prog_instruction.h"
-#include "prog_parameter.h"
-#include "prog_statevars.h"
+#include "main/imports.h"
+#include "main/macros.h"
+#include "main/mtypes.h"
+#include "shader/program.h"
+#include "shader/prog_instruction.h"
+#include "shader/prog_parameter.h"
+#include "shader/prog_statevars.h"
#include "slang_typeinfo.h"
#include "slang_codegen.h"
#include "slang_compile.h"
#include "slang_label.h"
+#include "slang_mem.h"
#include "slang_simplify.h"
#include "slang_emit.h"
#include "slang_vartable.h"
}
+/**
+ * Return the offset (in floats or ints) of the named field within
+ * the given struct. Return -1 if field not found.
+ * If field is NULL, return the size of the struct instead.
+ */
+static GLint
+_slang_field_offset(const slang_type_specifier *spec, slang_atom field)
+{
+ GLint offset = 0;
+ GLuint i;
+ for (i = 0; i < spec->_struct->fields->num_variables; i++) {
+ const slang_variable *v = spec->_struct->fields->variables[i];
+ const GLuint sz = _slang_sizeof_type_specifier(&v->type.specifier);
+ if (sz > 1) {
+ /* types larger than 1 float are register (4-float) aligned */
+ offset = (offset + 3) & ~3;
+ }
+ if (field && v->a_name == field) {
+ return offset;
+ }
+ offset += sz;
+ }
+ if (field)
+ return -1; /* field not found */
+ else
+ return offset; /* struct size */
+}
+
+
+/**
+ * Return the size (in floats) of the given type specifier.
+ * If the size is greater than 4, the size should be a multiple of 4
+ * so that the correct number of 4-float registers are allocated.
+ * For example, a mat3x2 is size 12 because we want to store the
+ * 3 columns in 3 float[4] registers.
+ */
GLuint
_slang_sizeof_type_specifier(const slang_type_specifier *spec)
{
+ GLuint sz;
switch (spec->type) {
case SLANG_SPEC_VOID:
- return 0;
+ sz = 0;
+ break;
case SLANG_SPEC_BOOL:
- return 1;
+ sz = 1;
+ break;
case SLANG_SPEC_BVEC2:
- return 2;
+ sz = 2;
+ break;
case SLANG_SPEC_BVEC3:
- return 3;
+ sz = 3;
+ break;
case SLANG_SPEC_BVEC4:
- return 4;
+ sz = 4;
+ break;
case SLANG_SPEC_INT:
- return 1;
+ sz = 1;
+ break;
case SLANG_SPEC_IVEC2:
- return 2;
+ sz = 2;
+ break;
case SLANG_SPEC_IVEC3:
- return 3;
+ sz = 3;
+ break;
case SLANG_SPEC_IVEC4:
- return 4;
+ sz = 4;
+ break;
case SLANG_SPEC_FLOAT:
- return 1;
+ sz = 1;
+ break;
case SLANG_SPEC_VEC2:
- return 2;
+ sz = 2;
+ break;
case SLANG_SPEC_VEC3:
- return 3;
+ sz = 3;
+ break;
case SLANG_SPEC_VEC4:
- return 4;
+ sz = 4;
+ break;
case SLANG_SPEC_MAT2:
- return 2 * 2;
+ sz = 2 * 4; /* 2 columns (regs) */
+ break;
case SLANG_SPEC_MAT3:
- return 3 * 3;
+ sz = 3 * 4;
+ break;
case SLANG_SPEC_MAT4:
- return 4 * 4;
+ sz = 4 * 4;
+ break;
+ case SLANG_SPEC_MAT23:
+ sz = 2 * 4; /* 2 columns (regs) */
+ break;
+ case SLANG_SPEC_MAT32:
+ sz = 3 * 4; /* 3 columns (regs) */
+ break;
+ case SLANG_SPEC_MAT24:
+ sz = 2 * 4;
+ break;
+ case SLANG_SPEC_MAT42:
+ sz = 4 * 4; /* 4 columns (regs) */
+ break;
+ case SLANG_SPEC_MAT34:
+ sz = 3 * 4;
+ break;
+ case SLANG_SPEC_MAT43:
+ sz = 4 * 4; /* 4 columns (regs) */
+ break;
case SLANG_SPEC_SAMPLER1D:
case SLANG_SPEC_SAMPLER2D:
case SLANG_SPEC_SAMPLER3D:
case SLANG_SPEC_SAMPLER2DSHADOW:
case SLANG_SPEC_SAMPLER2DRECT:
case SLANG_SPEC_SAMPLER2DRECTSHADOW:
- return 1; /* special case */
+ sz = 1; /* a sampler is basically just an integer index */
+ break;
case SLANG_SPEC_STRUCT:
- {
- GLuint sum = 0, i;
- for (i = 0; i < spec->_struct->fields->num_variables; i++) {
- slang_variable *v = spec->_struct->fields->variables[i];
- GLuint sz = _slang_sizeof_type_specifier(&v->type.specifier);
- /* XXX verify padding */
- if (sz < 4)
- sz = 4;
- sum += sz;
- }
- return sum;
+ sz = _slang_field_offset(spec, 0); /* special use */
+ if (sz > 4) {
+ sz = (sz + 3) & ~0x3; /* round up to multiple of four */
}
+ break;
case SLANG_SPEC_ARRAY:
- return _slang_sizeof_type_specifier(spec->_array);
+ sz = _slang_sizeof_type_specifier(spec->_array);
+ break;
default:
_mesa_problem(NULL, "Unexpected type in _slang_sizeof_type_specifier()");
- return 0;
+ sz = 0;
}
- return 0;
+
+ if (sz > 4) {
+ /* if size is > 4, it should be a multiple of four */
+ assert((sz & 0x3) == 0);
+ }
+ return sz;
}
};
-/**
- * Recursively free an IR tree.
- */
-static void
-_slang_free_ir_tree(slang_ir_node *n)
-{
-#if 1
- GLuint i;
- if (!n)
- return;
- for (i = 0; i < 3; i++)
- _slang_free_ir_tree(n->Children[i]);
- /* Do not free n->BranchNode since it's a child elsewhere */
- free(n);
-#endif
-}
-
-
static slang_ir_node *
new_node3(slang_ir_opcode op,
slang_ir_node *c0, slang_ir_node *c1, slang_ir_node *c2)
{
- slang_ir_node *n = (slang_ir_node *) calloc(1, sizeof(slang_ir_node));
+ slang_ir_node *n = (slang_ir_node *) _slang_alloc(sizeof(slang_ir_node));
if (n) {
n->Opcode = op;
n->Children[0] = c0;
}
static slang_ir_node *
-new_float_literal(const float v[4])
+new_float_literal(const float v[4], GLuint size)
{
- const GLuint size = (v[0] == v[1] && v[0] == v[2] && v[0] == v[3]) ? 1 : 4;
slang_ir_node *n = new_node0(IR_FLOAT);
+ assert(size <= 4);
COPY_4V(n->Value, v);
/* allocate a storage object, but compute actual location (Index) later */
n->Store = _slang_new_ir_storage(PROGRAM_CONSTANT, -1, size);
return n;
}
+
+static slang_ir_node *
+new_not(slang_ir_node *n)
+{
+ return new_node1(IR_NOT, n);
+}
+
+
+/**
+ * Inlined subroutine.
+ */
+static slang_ir_node *
+new_inlined_function_call(slang_ir_node *code, slang_label *name)
+{
+ slang_ir_node *n = new_node1(IR_FUNC, code);
+ assert(name);
+ if (n)
+ n->Label = name;
+ return n;
+}
+
+
/**
* Unconditional jump.
*/
static slang_ir_node *
-new_jump(slang_label *dest)
+new_return(slang_label *dest)
{
- slang_ir_node *n = new_node0(IR_JUMP);
+ slang_ir_node *n = new_node0(IR_RETURN);
assert(dest);
if (n)
n->Label = dest;
assert(loopNode->Opcode == IR_LOOP);
if (n) {
/* insert this node at head of linked list */
- n->BranchNode = loopNode->BranchNode;
- loopNode->BranchNode = n;
+ n->List = loopNode->List;
+ loopNode->List = n;
}
return n;
}
/**
- * Make new IR_BREAK_IF_TRUE or IR_BREAK_IF_FALSE node.
+ * Make new IR_BREAK_IF_TRUE.
*/
static slang_ir_node *
-new_break_if(slang_ir_node *loopNode, slang_ir_node *cond, GLboolean breakTrue)
+new_break_if_true(slang_ir_node *loopNode, slang_ir_node *cond)
{
slang_ir_node *n;
assert(loopNode);
assert(loopNode->Opcode == IR_LOOP);
- n = new_node1(breakTrue ? IR_BREAK_IF_TRUE : IR_BREAK_IF_FALSE, cond);
+ n = new_node1(IR_BREAK_IF_TRUE, cond);
if (n) {
/* insert this node at head of linked list */
- n->BranchNode = loopNode->BranchNode;
- loopNode->BranchNode = n;
+ n->List = loopNode->List;
+ loopNode->List = n;
}
return n;
}
/**
- * Make new IR_CONT_IF_TRUE or IR_CONT_IF_FALSE node.
+ * Make new IR_CONT_IF_TRUE node.
*/
static slang_ir_node *
-new_cont_if(slang_ir_node *loopNode, slang_ir_node *cond, GLboolean contTrue)
+new_cont_if_true(slang_ir_node *loopNode, slang_ir_node *cond)
{
slang_ir_node *n;
assert(loopNode);
assert(loopNode->Opcode == IR_LOOP);
- n = new_node1(contTrue ? IR_CONT_IF_TRUE : IR_CONT_IF_FALSE, cond);
- if (n) {
- /* insert this node at head of linked list */
- n->BranchNode = loopNode->BranchNode;
- loopNode->BranchNode = n;
- }
- return n;
-}
-
-
-static slang_ir_node *
-new_cont(slang_ir_node *loopNode)
-{
- slang_ir_node *n = new_node0(IR_CONT);
- assert(loopNode);
- assert(loopNode->Opcode == IR_LOOP);
+ n = new_node1(IR_CONT_IF_TRUE, cond);
if (n) {
/* insert this node at head of linked list */
- n->BranchNode = loopNode->BranchNode;
- loopNode->BranchNode = n;
+ n->List = loopNode->List;
+ loopNode->List = n;
}
return n;
}
/**
- * Produce inline code for a call to an assembly instruction.
- * XXX Note: children are passed as asm args in-order, not by name!
+ * Recursively search tree for a node of the given type.
*/
static slang_operation *
-slang_inline_asm_function(slang_assemble_ctx *A,
- slang_function *fun, slang_operation *oper)
+_slang_find_node_type(slang_operation *oper, slang_operation_type type)
{
- const GLuint numArgs = oper->num_children;
- const slang_operation *args = oper->children;
GLuint i;
- slang_operation *inlined = slang_operation_new(1);
-
- /*assert(oper->type == SLANG_OPER_CALL); or vec4_add, etc */
- /*
- printf("Inline asm %s\n", (char*) fun->header.a_name);
- */
- inlined->type = fun->body->children[0].type;
- inlined->a_id = fun->body->children[0].a_id;
- inlined->num_children = numArgs;
- inlined->children = slang_operation_new(numArgs);
- inlined->locals->outer_scope = oper->locals->outer_scope;
-
- for (i = 0; i < numArgs; i++) {
- slang_operation_copy(inlined->children + i, args + i);
+ if (oper->type == type)
+ return oper;
+ for (i = 0; i < oper->num_children; i++) {
+ slang_operation *p = _slang_find_node_type(&oper->children[i], type);
+ if (p)
+ return p;
}
-
- return inlined;
+ return NULL;
}
GLuint i;
v = _slang_locate_variable(oper->locals, id, GL_TRUE);
if (!v) {
- printf("var %s not found!\n", (char *) oper->a_id);
- _slang_print_var_scope(oper->locals, 6);
-
- abort();
- break;
+ _mesa_problem(NULL, "var %s not found!\n", (char *) oper->a_id);
+ return;
}
/* look for a substitution */
case SLANG_OPER_RETURN:
/* do return replacement here too */
assert(oper->num_children == 0 || oper->num_children == 1);
- if (!_slang_is_noop(oper)) {
+ if (oper->num_children == 1 && !_slang_is_noop(&oper->children[0])) {
/* replace:
* return expr;
* with:
* then do substitutions on the assignment.
*/
slang_operation *blockOper, *assignOper, *returnOper;
+
+ /* check if function actually has a return type */
+ assert(A->CurFunction);
+ if (A->CurFunction->header.type.specifier.type == SLANG_SPEC_VOID) {
+ slang_info_log_error(A->log, "illegal return expression");
+ return;
+ }
+
blockOper = slang_operation_new(1);
blockOper->type = SLANG_OPER_BLOCK_NO_NEW_SCOPE;
blockOper->num_children = 2;
slang_operation_copy(&assignOper->children[1],
&oper->children[0]);
- returnOper->type = SLANG_OPER_RETURN;
+ returnOper->type = SLANG_OPER_RETURN; /* return w/ no value */
assert(returnOper->num_children == 0);
/* do substitutions on the "__retVal = expr" sub-tree */
slang_operation_copy(oper, blockOper);
slang_operation_destruct(blockOper);
}
+ else {
+ /* check if return value was expected */
+ assert(A->CurFunction);
+ if (A->CurFunction->header.type.specifier.type != SLANG_SPEC_VOID) {
+ slang_info_log_error(A->log, "return statement requires an expression");
+ return;
+ }
+ }
break;
case SLANG_OPER_ASSIGN:
+/**
+ * Produce inline code for a call to an assembly instruction.
+ * This is typically used to compile a call to a built-in function like this:
+ *
+ * vec4 mix(const vec4 x, const vec4 y, const vec4 a)
+ * {
+ * __asm vec4_lrp __retVal, a, y, x;
+ * }
+ *
+ * We basically translate a SLANG_OPER_CALL into a SLANG_OPER_ASM.
+ */
+static slang_operation *
+slang_inline_asm_function(slang_assemble_ctx *A,
+ slang_function *fun, slang_operation *oper)
+{
+ const GLuint numArgs = oper->num_children;
+ GLuint i;
+ slang_operation *inlined;
+ const GLboolean haveRetValue = _slang_function_has_return_value(fun);
+ slang_variable **substOld;
+ slang_operation **substNew;
+
+ ASSERT(slang_is_asm_function(fun));
+ ASSERT(fun->param_count == numArgs + haveRetValue);
+
+ /*
+ printf("Inline %s as %s\n",
+ (char*) fun->header.a_name,
+ (char*) fun->body->children[0].a_id);
+ */
+
+ /*
+ * We'll substitute formal params with actual args in the asm call.
+ */
+ substOld = (slang_variable **)
+ _slang_alloc(numArgs * sizeof(slang_variable *));
+ substNew = (slang_operation **)
+ _slang_alloc(numArgs * sizeof(slang_operation *));
+ for (i = 0; i < numArgs; i++) {
+ substOld[i] = fun->parameters->variables[i];
+ substNew[i] = oper->children + i;
+ }
+
+ /* make a copy of the code to inline */
+ inlined = slang_operation_new(1);
+ slang_operation_copy(inlined, &fun->body->children[0]);
+ if (haveRetValue) {
+ /* get rid of the __retVal child */
+ for (i = 0; i < numArgs; i++) {
+ inlined->children[i] = inlined->children[i + 1];
+ }
+ inlined->num_children--;
+ }
+
+ /* now do formal->actual substitutions */
+ slang_substitute(A, inlined, numArgs, substOld, substNew, GL_FALSE);
+
+ _slang_free(substOld);
+ _slang_free(substNew);
+
+ return inlined;
+}
+
+
/**
* Inline the given function call operation.
* Return a new slang_operation that corresponds to the inlined code.
slang_variable **substOld;
slang_operation **substNew;
GLuint substCount, numCopyIn, i;
+ slang_function *prevFunction;
+
+ /* save / push */
+ prevFunction = A->CurFunction;
+ A->CurFunction = fun;
/*assert(oper->type == SLANG_OPER_CALL); (or (matrix) multiply, etc) */
assert(fun->param_count == totalArgs);
/* allocate temporary arrays */
paramMode = (ParamMode *)
- _mesa_calloc(totalArgs * sizeof(ParamMode));
+ _slang_alloc(totalArgs * sizeof(ParamMode));
substOld = (slang_variable **)
- _mesa_calloc(totalArgs * sizeof(slang_variable *));
+ _slang_alloc(totalArgs * sizeof(slang_variable *));
substNew = (slang_operation **)
- _mesa_calloc(totalArgs * sizeof(slang_operation *));
+ _slang_alloc(totalArgs * sizeof(slang_operation *));
#if 0
printf("Inline call to %s (total vars=%d nparams=%d)\n",
}
}
- _mesa_free(paramMode);
- _mesa_free(substOld);
- _mesa_free(substNew);
+ _slang_free(paramMode);
+ _slang_free(substOld);
+ _slang_free(substNew);
#if 0
printf("Done Inline call to %s (total vars=%d nparams=%d)\n",
fun->parameters->num_variables, numArgs);
slang_print_tree(top, 0);
#endif
+
+ /* pop */
+ A->CurFunction = prevFunction;
+
return top;
}
else {
/* non-assembly function */
inlined = slang_inline_function_call(A, fun, oper, dest);
+ if (inlined && _slang_find_node_type(inlined, SLANG_OPER_RETURN)) {
+ /* This inlined function has one or more 'return' statements.
+ * So, we can't truly inline this function because we need to
+ * implement 'return' with RET (and CAL).
+ * XXX check if there's one 'return' and if it's the very last
+ * statement in the function - we can optimize that case.
+ */
+ assert(inlined->type == SLANG_OPER_BLOCK_NEW_SCOPE ||
+ inlined->type == SLANG_OPER_SEQUENCE);
+ inlined->type = SLANG_OPER_INLINED_CALL;
+ inlined->fun = fun;
+ inlined->label = _slang_label_new_unique((char*) fun->header.a_name);
+ }
}
- /* Replace the function call with the inlined block */
-#if 0
- slang_operation_construct(oper);
- slang_operation_copy(oper, inlined);
-#else
- *oper = *inlined; /* XXX slang_operation_copy() */
-#endif
+ if (!inlined)
+ return NULL;
+ /* Replace the function call with the inlined block */
+ slang_operation_destruct(oper);
+ *oper = *inlined;
+ _slang_free(inlined);
#if 0
assert(inlined->locals);
/*_slang_label_delete(A->curFuncEndLabel);*/
A->curFuncEndLabel = prevFuncEndLabel;
- assert(A->curFuncEndLabel);
return n;
}
while (*field) {
switch (*field) {
case 'x':
+ case 's':
+ case 'r':
mask |= WRITEMASK_X;
break;
case 'y':
+ case 't':
+ case 'g':
mask |= WRITEMASK_Y;
break;
case 'z':
+ case 'p':
+ case 'b':
mask |= WRITEMASK_Z;
break;
case 'w':
+ case 'q':
+ case 'a':
mask |= WRITEMASK_W;
break;
default:
- abort();
+ _mesa_problem(NULL, "invalid writemask in make_writemask()");
+ return 0;
}
field++;
}
n->Store = n0->Store;
n->Writemask = writemask;
- free(n0);
+ _slang_free(n0);
}
return n;
* Try adapting the parameters.
*/
fun = _slang_first_function(A->space.funcs, name);
- if (!_slang_adapt_call(oper, fun, &A->space, A->atoms, A->log)) {
+ if (!fun || !_slang_adapt_call(oper, fun, &A->space, A->atoms, A->log)) {
slang_info_log_error(A->log, "Function '%s' not found (check argument types)", name);
return NULL;
}
}
+/**
+ * Test if an operation is a scalar or boolean.
+ */
+static GLboolean
+_slang_is_scalar_or_boolean(slang_assemble_ctx *A, slang_operation *oper)
+{
+ slang_typeinfo type;
+ GLint size;
+
+ slang_typeinfo_construct(&type);
+ _slang_typeof_operation(A, oper, &type);
+ size = _slang_sizeof_type_specifier(&type.spec);
+ slang_typeinfo_destruct(&type);
+ return size == 1;
+}
+
/**
* Generate loop code using high-level IR_LOOP instruction
* BREAK if !expr (child[0])
* body code (child[1])
*/
- slang_ir_node *prevLoop, *loop, *cond, *breakIf, *body;
+ slang_ir_node *prevLoop, *loop, *breakIf, *body;
GLboolean isConst, constTrue;
+ /* type-check expression */
+ if (!_slang_is_scalar_or_boolean(A, &oper->children[0])) {
+ slang_info_log_error(A->log, "scalar/boolean expression expected for 'while'");
+ return NULL;
+ }
+
/* Check if loop condition is a constant */
isConst = _slang_is_constant_cond(&oper->children[0], &constTrue);
prevLoop = A->CurLoop;
A->CurLoop = loop;
- cond = new_cond(_slang_gen_operation(A, &oper->children[0]));
if (isConst && constTrue) {
/* while(nonzero constant), no conditional break */
breakIf = NULL;
}
else {
- breakIf = new_break_if(A->CurLoop, cond, GL_FALSE);
+ slang_ir_node *cond
+ = new_cond(new_not(_slang_gen_operation(A, &oper->children[0])));
+ breakIf = new_break_if_true(A->CurLoop, cond);
}
body = _slang_gen_operation(A, &oper->children[1]);
loop->Children[0] = new_seq(breakIf, body);
/* Do infinite loop detection */
- if (loop->BranchNode == 0 && isConst && constTrue) {
+ /* loop->List is head of linked list of break/continue nodes */
+ if (!loop->List && isConst && constTrue) {
/* infinite loop detected */
A->CurLoop = prevLoop; /* clean-up */
slang_info_log_error(A->log, "Infinite loop detected!");
/*
* LOOP:
* body code (child[0])
- * BREAK if !expr (child[1])
+ * tail code:
+ * BREAK if !expr (child[1])
*/
- slang_ir_node *prevLoop, *loop, *cond, *breakIf, *body;
+ slang_ir_node *prevLoop, *loop;
GLboolean isConst, constTrue;
- /* Check if loop condition is a constant */
- isConst = _slang_is_constant_cond(&oper->children[0], &constTrue);
+ /* type-check expression */
+ if (!_slang_is_scalar_or_boolean(A, &oper->children[1])) {
+ slang_info_log_error(A->log, "scalar/boolean expression expected for 'do/while'");
+ return NULL;
+ }
loop = new_loop(NULL);
prevLoop = A->CurLoop;
A->CurLoop = loop;
- body = _slang_gen_operation(A, &oper->children[0]);
- cond = new_cond(_slang_gen_operation(A, &oper->children[1]));
+ /* loop body: */
+ loop->Children[0] = _slang_gen_operation(A, &oper->children[0]);
+
+ /* Check if loop condition is a constant */
+ isConst = _slang_is_constant_cond(&oper->children[1], &constTrue);
if (isConst && constTrue) {
- /* while(nonzero constant), no conditional break */
- breakIf = NULL;
+ /* do { } while(1) ==> no conditional break */
+ loop->Children[1] = NULL; /* no tail code */
}
else {
- breakIf = new_break_if(A->CurLoop, cond, GL_FALSE);
+ slang_ir_node *cond
+ = new_cond(new_not(_slang_gen_operation(A, &oper->children[1])));
+ loop->Children[1] = new_break_if_true(A->CurLoop, cond);
}
- loop->Children[0] = new_seq(body, breakIf);
+
+ /* XXX we should do infinite loop detection, as above */
/* pop loop, restore prev */
A->CurLoop = prevLoop;
_slang_gen_for(slang_assemble_ctx * A, const slang_operation *oper)
{
/*
- * init (child[0])
+ * init code (child[0])
* LOOP:
* BREAK if !expr (child[1])
* body code (child[3])
- * incr code (child[2]) // XXX continue here
+ * tail code:
+ * incr code (child[2]) // XXX continue here
*/
slang_ir_node *prevLoop, *loop, *cond, *breakIf, *body, *init, *incr;
prevLoop = A->CurLoop;
A->CurLoop = loop;
- cond = new_cond(_slang_gen_operation(A, &oper->children[1]));
- breakIf = new_break_if(A->CurLoop, cond, GL_FALSE);
+ cond = new_cond(new_not(_slang_gen_operation(A, &oper->children[1])));
+ breakIf = new_break_if_true(A->CurLoop, cond);
body = _slang_gen_operation(A, &oper->children[3]);
incr = _slang_gen_operation(A, &oper->children[2]);
- loop->Children[0] = new_seq(breakIf,
- new_seq(body, incr));
+
+ loop->Children[0] = new_seq(breakIf, body);
+ loop->Children[1] = incr; /* tail code */
/* pop loop, restore prev */
A->CurLoop = prevLoop;
}
+static slang_ir_node *
+_slang_gen_continue(slang_assemble_ctx * A, const slang_operation *oper)
+{
+ slang_ir_node *n, *loopNode;
+ assert(oper->type == SLANG_OPER_CONTINUE);
+ loopNode = A->CurLoop;
+ assert(loopNode);
+ assert(loopNode->Opcode == IR_LOOP);
+ n = new_node0(IR_CONT);
+ if (n) {
+ n->Parent = loopNode;
+ /* insert this node at head of linked list */
+ n->List = loopNode->List;
+ loopNode->List = n;
+ }
+ return n;
+}
+
+
/**
* Determine if the given operation is of a specific type.
*/
static GLboolean
-is_operation_type(const const slang_operation *oper, slang_operation_type type)
+is_operation_type(const slang_operation *oper, slang_operation_type type)
{
if (oper->type == type)
return GL_TRUE;
_slang_gen_if(slang_assemble_ctx * A, const slang_operation *oper)
{
/*
- * eval expr (child[0]), updating condcodes
+ * eval expr (child[0])
* IF expr THEN
* if-body code
* ELSE
*/
const GLboolean haveElseClause = !_slang_is_noop(&oper->children[2]);
slang_ir_node *ifNode, *cond, *ifBody, *elseBody;
+ GLboolean isConst, constTrue;
+
+ /* type-check expression */
+ if (!_slang_is_scalar_or_boolean(A, &oper->children[0])) {
+ slang_info_log_error(A->log, "scalar/boolean expression expected for 'if'");
+ return NULL;
+ }
+
+ isConst = _slang_is_constant_cond(&oper->children[0], &constTrue);
+ if (isConst) {
+ if (constTrue) {
+ /* if (true) ... */
+ return _slang_gen_operation(A, &oper->children[1]);
+ }
+ else {
+ /* if (false) ... */
+ return _slang_gen_operation(A, &oper->children[2]);
+ }
+ }
cond = _slang_gen_operation(A, &oper->children[0]);
cond = new_cond(cond);
if (is_operation_type(&oper->children[1], SLANG_OPER_BREAK)) {
/* Special case: generate a conditional break */
- ifBody = new_break_if(A->CurLoop, cond, GL_TRUE);
+ ifBody = new_break_if_true(A->CurLoop, cond);
if (haveElseClause) {
elseBody = _slang_gen_operation(A, &oper->children[2]);
return new_seq(ifBody, elseBody);
}
else if (is_operation_type(&oper->children[1], SLANG_OPER_CONTINUE)) {
/* Special case: generate a conditional break */
- ifBody = new_cont_if(A->CurLoop, cond, GL_TRUE);
+ ifBody = new_cont_if_true(A->CurLoop, cond);
if (haveElseClause) {
elseBody = _slang_gen_operation(A, &oper->children[2]);
return new_seq(ifBody, elseBody);
+static slang_ir_node *
+_slang_gen_not(slang_assemble_ctx * A, const slang_operation *oper)
+{
+ slang_ir_node *n;
+
+ assert(oper->type == SLANG_OPER_NOT);
+
+ /* type-check expression */
+ if (!_slang_is_scalar_or_boolean(A, &oper->children[0])) {
+ slang_info_log_error(A->log,
+ "scalar/boolean expression expected for '!'");
+ return NULL;
+ }
+
+ n = _slang_gen_operation(A, &oper->children[0]);
+ if (n)
+ return new_not(n);
+ else
+ return NULL;
+}
+
+
+static slang_ir_node *
+_slang_gen_xor(slang_assemble_ctx * A, const slang_operation *oper)
+{
+ slang_ir_node *n1, *n2;
+
+ assert(oper->type == SLANG_OPER_LOGICALXOR);
+
+ if (!_slang_is_scalar_or_boolean(A, &oper->children[0]) ||
+ !_slang_is_scalar_or_boolean(A, &oper->children[0])) {
+ slang_info_log_error(A->log,
+ "scalar/boolean expressions expected for '^^'");
+ return NULL;
+ }
+
+ n1 = _slang_gen_operation(A, &oper->children[0]);
+ if (!n1)
+ return NULL;
+ n2 = _slang_gen_operation(A, &oper->children[1]);
+ if (!n2)
+ return NULL;
+ return new_node2(IR_NOTEQUAL, n1, n2);
+}
+
+
/**
* Generate IR node for storage of a temporary of given size.
*/
_slang_gen_temporary(GLint size)
{
slang_ir_storage *store;
- slang_ir_node *n;
+ slang_ir_node *n = NULL;
store = _slang_new_ir_storage(PROGRAM_TEMPORARY, -1, size);
if (store) {
n->Store = store;
}
else {
- free(store);
+ _slang_free(store);
}
}
return n;
n->Store->File = PROGRAM_TEMPORARY;
n->Store->Size = _slang_sizeof_type_specifier(&n->Var->type.specifier);
+ A->program->NumTemporaries++;
assert(n->Store->Size > 0);
}
return n;
tree = new_seq(ifNode, tmpVar);
tree = new_seq(tmpDecl, tree);
- slang_print_ir(tree, 10);
+ /*_slang_print_ir_tree(tree, 10);*/
return tree;
}
select->children[2].literal_size = 1;
n = _slang_gen_select(A, select);
-
- /* xxx wrong */
- free(select->children);
- free(select);
-
return n;
}
slang_operation_copy(&select->children[2], &oper->children[1]);
n = _slang_gen_select(A, select);
-
- /* xxx wrong */
- free(select->children);
- free(select);
-
return n;
}
static slang_ir_node *
_slang_gen_return(slang_assemble_ctx * A, slang_operation *oper)
{
- if (oper->num_children == 0 ||
- (oper->num_children == 1 &&
- oper->children[0].type == SLANG_OPER_VOID)) {
- /* Convert from:
- * return;
- * To:
- * goto __endOfFunction;
- */
- slang_ir_node *n;
- slang_operation gotoOp;
- slang_operation_construct(&gotoOp);
- gotoOp.type = SLANG_OPER_GOTO;
- gotoOp.label = A->curFuncEndLabel;
- assert(gotoOp.label);
+ const GLboolean haveReturnValue
+ = (oper->num_children == 1 &&
+ oper->children[0].type != SLANG_OPER_VOID);
+
+ /* error checking */
+ assert(A->CurFunction);
+ if (haveReturnValue &&
+ A->CurFunction->header.type.specifier.type == SLANG_SPEC_VOID) {
+ slang_info_log_error(A->log, "illegal return expression");
+ return NULL;
+ }
+ else if (!haveReturnValue &&
+ A->CurFunction->header.type.specifier.type != SLANG_SPEC_VOID) {
+ slang_info_log_error(A->log, "return statement requires an expression");
+ return NULL;
+ }
- /* assemble the new code */
- n = _slang_gen_operation(A, &gotoOp);
- /* destroy temp code */
- slang_operation_destruct(&gotoOp);
- return n;
+ if (!haveReturnValue) {
+ return new_return(A->curFuncEndLabel);
}
else {
/*
* return expr;
* To:
* __retVal = expr;
- * goto __endOfFunction;
+ * return; // goto __endOfFunction
*/
- slang_operation *block, *assign, *jump;
+ slang_operation *assign;
slang_atom a_retVal;
slang_ir_node *n;
{
slang_variable *v
= _slang_locate_variable(oper->locals, a_retVal, GL_TRUE);
- assert(v);
+ if (!v) {
+ /* trying to return a value in a void-valued function */
+ return NULL;
+ }
}
#endif
- block = slang_operation_new(1);
- block->type = SLANG_OPER_BLOCK_NO_NEW_SCOPE;
- assert(block->locals);
- block->locals->outer_scope = oper->locals->outer_scope;
- block->num_children = 2;
- block->children = slang_operation_new(2);
-
- /* child[0]: __retVal = expr; */
- assign = &block->children[0];
+ assign = slang_operation_new(1);
assign->type = SLANG_OPER_ASSIGN;
- assign->locals->outer_scope = block->locals;
assign->num_children = 2;
assign->children = slang_operation_new(2);
/* lhs (__retVal) */
/* XXX we might be able to avoid this copy someday */
slang_operation_copy(&assign->children[1], &oper->children[0]);
- /* child[1]: goto __endOfFunction */
- jump = &block->children[1];
- jump->type = SLANG_OPER_GOTO;
- assert(A->curFuncEndLabel);
- /* XXX don't call function? */
- jump->label = A->curFuncEndLabel;
- assert(jump->label);
-
-#if 0 /* debug */
- printf("NEW RETURN:\n");
- slang_print_tree(block, 0);
-#endif
-
/* assemble the new code */
- n = _slang_gen_operation(A, block);
- slang_operation_delete(block);
+ n = new_seq(_slang_gen_operation(A, assign),
+ new_return(A->curFuncEndLabel));
+
+ slang_operation_delete(assign);
return n;
}
}
_slang_simplify(v->initializer, &A->space, A->atoms);
rhs = _slang_gen_operation(A, v->initializer);
#endif
+ if (!rhs)
+ return NULL;
+
assert(rhs);
init = new_node2(IR_MOVE, var, rhs);
/*
static slang_ir_node *
_slang_gen_assignment(slang_assemble_ctx * A, slang_operation *oper)
{
+ if (oper->children[0].type == SLANG_OPER_IDENTIFIER) {
+ /* Check that var is writeable */
+ slang_variable *var
+ = _slang_locate_variable(oper->children[0].locals,
+ oper->children[0].a_id, GL_TRUE);
+ if (!var) {
+ slang_info_log_error(A->log, "undefined variable '%s'",
+ (char *) oper->children[0].a_id);
+ return NULL;
+ }
+ if (var->type.qualifier == SLANG_QUAL_CONST ||
+ var->type.qualifier == SLANG_QUAL_ATTRIBUTE ||
+ var->type.qualifier == SLANG_QUAL_UNIFORM) {
+ slang_info_log_error(A->log,
+ "illegal assignment to read-only variable '%s'",
+ (char *) oper->children[0].a_id);
+ return NULL;
+ }
+ }
+
if (oper->children[0].type == SLANG_OPER_IDENTIFIER &&
oper->children[1].type == SLANG_OPER_CALL) {
/* Special case of: x = f(a, b)
lhs->Store->File != PROGRAM_TEMPORARY &&
lhs->Store->File != PROGRAM_VARYING &&
lhs->Store->File != PROGRAM_UNDEFINED) {
- slang_info_log_error(A->log, "Assignment to read-only variable");
+ slang_info_log_error(A->log,
+ "illegal assignment to read-only l-value");
return NULL;
}
}
{
slang_typeinfo ti;
+ /* type of struct */
slang_typeinfo_construct(&ti);
_slang_typeof_operation(A, &oper->children[0], &ti);
n = _slang_gen_swizzle(n, swizzle);
return n;
}
- else if (ti.spec.type == SLANG_SPEC_FLOAT) {
+ else if ( ti.spec.type == SLANG_SPEC_FLOAT
+ || ti.spec.type == SLANG_SPEC_INT) {
const GLuint rows = 1;
slang_swizzle swz;
slang_ir_node *n;
/* oper->children[0] is the base */
/* oper->a_id is the field name */
slang_ir_node *base, *n;
- GLint size = 4; /* XXX fix? */
+ slang_typeinfo field_ti;
+ GLint fieldSize, fieldOffset = -1;
+ /* type of field */
+ slang_typeinfo_construct(&field_ti);
+ _slang_typeof_operation(A, oper, &field_ti);
+
+ fieldSize = _slang_sizeof_type_specifier(&field_ti.spec);
+ if (fieldSize > 0)
+ fieldOffset = _slang_field_offset(&ti.spec, oper->a_id);
+
+ if (fieldSize == 0 || fieldOffset < 0) {
+ slang_info_log_error(A->log,
+ "\"%s\" is not a member of struct \"%s\"",
+ (char *) oper->a_id,
+ (char *) ti.spec._struct->a_name);
+ return NULL;
+ }
+ assert(fieldSize >= 0);
base = _slang_gen_operation(A, &oper->children[0]);
if (!base) {
- /* error previously found */
+ /* error msg should have already been logged */
return NULL;
}
n = new_node1(IR_FIELD, base);
if (n) {
n->Field = (char *) oper->a_id;
+ n->FieldOffset = fieldOffset;
+ assert(n->FieldOffset >= 0);
n->Store = _slang_new_ir_storage(base->Store->File,
base->Store->Index,
- size);
+ fieldSize);
}
return n;
case SLANG_OPER_BREAK:
if (!A->CurLoop) {
slang_info_log_error(A->log, "'break' not in loop");
+ return NULL;
}
return new_break(A->CurLoop);
case SLANG_OPER_CONTINUE:
if (!A->CurLoop) {
slang_info_log_error(A->log, "'continue' not in loop");
+ return NULL;
}
- return new_cont(A->CurLoop);
+ return _slang_gen_continue(A, oper);
case SLANG_OPER_DISCARD:
return new_node0(IR_KILL);
case SLANG_OPER_EQUAL:
- return new_node2(IR_SEQUAL,
+ return new_node2(IR_EQUAL,
_slang_gen_operation(A, &oper->children[0]),
_slang_gen_operation(A, &oper->children[1]));
case SLANG_OPER_NOTEQUAL:
- return new_node2(IR_SNEQUAL,
+ return new_node2(IR_NOTEQUAL,
_slang_gen_operation(A, &oper->children[0]),
_slang_gen_operation(A, &oper->children[1]));
case SLANG_OPER_GREATER:
return n;
}
case SLANG_OPER_LOGICALXOR:
- {
- slang_ir_node *n;
- assert(oper->num_children == 2);
- n = _slang_gen_function_call_name(A, "__logicalXor", oper, NULL);
- return n;
- }
+ return _slang_gen_xor(A, oper);
case SLANG_OPER_NOT:
- {
- slang_ir_node *n;
- assert(oper->num_children == 1);
- n = _slang_gen_function_call_name(A, "__logicalNot", oper, NULL);
- return n;
- }
-
+ return _slang_gen_not(A, oper);
case SLANG_OPER_SELECT: /* b ? x : y */
{
slang_ir_node *n;
oper, NULL);
case SLANG_OPER_RETURN:
return _slang_gen_return(A, oper);
- case SLANG_OPER_GOTO:
- return new_jump(oper->label);
case SLANG_OPER_LABEL:
return new_label(oper->label);
case SLANG_OPER_IDENTIFIER:
case SLANG_OPER_LITERAL_INT:
/* fall-through */
case SLANG_OPER_LITERAL_BOOL:
- return new_float_literal(oper->literal);
+ return new_float_literal(oper->literal, oper->literal_size);
case SLANG_OPER_POSTINCREMENT: /* var++ */
{
return n;
}
+ case SLANG_OPER_INLINED_CALL:
case SLANG_OPER_SEQUENCE:
{
slang_ir_node *tree = NULL;
slang_ir_node *n = _slang_gen_operation(A, &oper->children[i]);
tree = tree ? new_seq(tree, n) : n;
}
+ if (oper->type == SLANG_OPER_INLINED_CALL) {
+ tree = new_inlined_function_call(tree, oper->label);
+ }
return tree;
}
return new_node0(IR_NOP);
default:
- printf("Unhandled node type %d\n", oper->type);
- abort();
+ _mesa_problem(NULL, "bad node type %d in _slang_gen_operation",
+ oper->type);
return new_node0(IR_NOP);
}
struct gl_program *prog = A->program;
const char *varName = (char *) var->a_name;
GLboolean success = GL_TRUE;
- GLint texIndex;
slang_ir_storage *store = NULL;
int dbg = 0;
-
- texIndex = sampler_to_texture_index(var->type.specifier.type);
+ const GLenum datatype = _slang_gltype_from_specifier(&var->type.specifier);
+ const GLint texIndex = sampler_to_texture_index(var->type.specifier.type);
if (texIndex != -1) {
/* Texture sampler:
* store->Index = sampler uniform location
* store->Size = texture type index (1D, 2D, 3D, cube, etc)
*/
- GLint samplerUniform = _mesa_add_sampler(prog->Parameters, varName);
+ GLint samplerUniform
+ = _mesa_add_sampler(prog->Parameters, varName, datatype);
store = _slang_new_ir_storage(PROGRAM_SAMPLER, samplerUniform, texIndex);
if (dbg) printf("SAMPLER ");
}
* MAX2(var->array_len, 1);
if (prog) {
/* user-defined uniform */
- GLint uniformLoc = _mesa_add_uniform(prog->Parameters, varName, size);
- store = _slang_new_ir_storage(PROGRAM_UNIFORM, uniformLoc, size);
+ if (datatype == GL_NONE) {
+ if (var->type.specifier.type == SLANG_SPEC_STRUCT) {
+ _mesa_problem(NULL, "user-declared uniform structs not supported yet");
+ /* XXX what we need to do is unroll the struct into its
+ * basic types, creating a uniform variable for each.
+ * For example:
+ * struct foo {
+ * vec3 a;
+ * vec4 b;
+ * };
+ * uniform foo f;
+ *
+ * Should produce uniforms:
+ * "f.a" (GL_FLOAT_VEC3)
+ * "f.b" (GL_FLOAT_VEC4)
+ */
+ }
+ else {
+ slang_info_log_error(A->log,
+ "invalid datatype for uniform variable %s",
+ (char *) var->a_name);
+ }
+ return GL_FALSE;
+ }
+ else {
+ GLint uniformLoc = _mesa_add_uniform(prog->Parameters, varName,
+ size, datatype);
+ store = _slang_new_ir_storage(PROGRAM_UNIFORM, uniformLoc, size);
+ }
}
else {
/* pre-defined uniform, like gl_ModelviewMatrix */
if (dbg) printf("ATTRIB ");
}
else if (var->type.qualifier == SLANG_QUAL_FIXEDINPUT) {
- GLuint swizzle;
+ GLuint swizzle = SWIZZLE_XYZW; /* silence compiler warning */
GLint index = _slang_input_index(varName, GL_FRAGMENT_PROGRAM_ARB,
&swizzle);
GLint size = 4; /* XXX? */
store = _slang_new_ir_storage(PROGRAM_OUTPUT, index, size);
}
else {
- assert(type == SLANG_UNIT_FRAGMENT_BUILTIN);
GLint index = _slang_output_index(varName, GL_FRAGMENT_PROGRAM_ARB);
GLint size = 4; /* XXX? */
+ assert(type == SLANG_UNIT_FRAGMENT_BUILTIN);
store = _slang_new_ir_storage(PROGRAM_OUTPUT, index, size);
}
if (dbg) printf("OUTPUT ");
/* we only really generate code for main, all other functions get
* inlined.
*/
+#if 0
+ /* do some basic error checking though */
+ if (fun->header.type.specifier.type != SLANG_SPEC_VOID) {
+ /* check that non-void functions actually return something */
+ slang_operation *op
+ = _slang_find_node_type(fun->body, SLANG_OPER_RETURN);
+ if (!op) {
+ slang_info_log_error(A->log,
+ "function \"%s\" has no return statement",
+ (char *) fun->header.a_name);
+ printf(
+ "function \"%s\" has no return statement\n",
+ (char *) fun->header.a_name);
+ return GL_FALSE;
+ }
+ }
+#endif
return GL_TRUE; /* not an error */
}
assert(A->program->Parameters );
assert(A->program->Varying);
assert(A->vartable);
+ A->CurLoop = NULL;
+ A->CurFunction = fun;
/* fold constant expressions, etc. */
_slang_simplify(fun->body, &A->space, A->atoms);
#endif
#if 0
printf("************* IR for %s *******\n", (char*)fun->header.a_name);
- slang_print_ir(n, 0);
+ _slang_print_ir_tree(n, 0);
#endif
#if 0
printf("************* End codegen function ************\n\n");
projects / mesa.git / blobdiff