/*
* 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_print.h"
+#include "shader/prog_statevars.h"
#include "slang_typeinfo.h"
#include "slang_codegen.h"
#include "slang_compile.h"
_slang_gen_operation(slang_assemble_ctx * A, slang_operation *oper);
+/**
+ * Retrieves type information about an operation.
+ * Returns GL_TRUE on success.
+ * Returns GL_FALSE otherwise.
+ */
+static GLboolean
+typeof_operation(const struct slang_assemble_ctx_ * A,
+ slang_operation * op,
+ slang_typeinfo * ti)
+{
+ return _slang_typeof_operation(op, &A->space, ti, A->atoms, A->log);
+}
+
+
static GLboolean
is_sampler_type(const slang_fully_specified_type *t)
{
if (!n->Store) {
/* need to setup storage */
- if (n->Var && n->Var->aux) {
+ if (n->Var && n->Var->store) {
/* node storage info = var storage info */
- n->Store = (slang_ir_storage *) n->Var->aux;
+ n->Store = n->Var->store;
}
else {
/* alloc new storage info */
- n->Store = _slang_new_ir_storage(PROGRAM_UNDEFINED, -1, -5);
+ n->Store = _slang_new_ir_storage(PROGRAM_UNDEFINED, -7, -5);
+#if 0
+ printf("%s var=%s Store=%p Size=%d\n", __FUNCTION__,
+ (char*) var->a_name,
+ (void*) n->Store, n->Store->Size);
+#endif
if (n->Var)
- n->Var->aux = n->Store;
- assert(n->Var->aux);
+ n->Var->store = n->Store;
+ assert(n->Var->store);
}
}
}
}
+#define SWIZZLE_ZWWW MAKE_SWIZZLE4(SWIZZLE_Z, SWIZZLE_W, SWIZZLE_W, SWIZZLE_W)
+
/**
* Return the VERT_ATTRIB_* or FRAG_ATTRIB_* value that corresponds to
* a vertex or fragment program input variable. Return -1 if the input
{ "gl_FragCoord", FRAG_ATTRIB_WPOS, SWIZZLE_NOOP },
{ "gl_Color", FRAG_ATTRIB_COL0, SWIZZLE_NOOP },
{ "gl_SecondaryColor", FRAG_ATTRIB_COL1, SWIZZLE_NOOP },
- { "gl_FogFragCoord", FRAG_ATTRIB_FOGC, SWIZZLE_XXXX },
{ "gl_TexCoord", FRAG_ATTRIB_TEX0, SWIZZLE_NOOP },
+ /* note: we're packing several quantities into the fogcoord vector */
+ { "gl_FogFragCoord", FRAG_ATTRIB_FOGC, SWIZZLE_XXXX },
{ "gl_FrontFacing", FRAG_ATTRIB_FOGC, SWIZZLE_YYYY }, /*XXX*/
+ { "gl_PointCoord", FRAG_ATTRIB_FOGC, SWIZZLE_ZWWW },
{ NULL, 0, SWIZZLE_NOOP }
};
GLuint i;
{ "vec4_multiply", IR_MUL, 1, 2 },
{ "vec4_dot", IR_DOT4, 1, 2 },
{ "vec3_dot", IR_DOT3, 1, 2 },
+ { "vec2_dot", IR_DOT2, 1, 2 },
+ { "vec3_nrm", IR_NRM3, 1, 1 },
+ { "vec4_nrm", IR_NRM4, 1, 1 },
{ "vec3_cross", IR_CROSS, 1, 2 },
{ "vec4_lrp", IR_LRP, 1, 3 },
{ "vec4_min", IR_MIN, 1, 2 },
{ "vec4_sle", IR_SLE, 1, 2 },
{ "vec4_slt", IR_SLT, 1, 2 },
/* vec4 unary */
+ { "vec4_move", IR_MOVE, 1, 1 },
{ "vec4_floor", IR_FLOOR, 1, 1 },
{ "vec4_frac", IR_FRAC, 1, 1 },
{ "vec4_abs", IR_ABS, 1, 1 },
{ "vec4_texp_rect", IR_TEX, 1, 2 },/* rectangle w/ projection */
/* unary op */
- { "int_to_float", IR_I_TO_F, 1, 1 },
- { "float_to_int", IR_F_TO_I, 1, 1 },
+ { "ivec4_to_vec4", IR_I_TO_F, 1, 1 }, /* int[4] to float[4] */
+ { "vec4_to_ivec4", IR_F_TO_I, 1, 1 }, /* float[4] to int[4] */
{ "float_exp", IR_EXP, 1, 1 },
{ "float_exp2", IR_EXP2, 1, 1 },
{ "float_log2", IR_LOG2, 1, 1 },
n->Children[0] = c0;
n->Children[1] = c1;
n->Children[2] = c2;
- n->Writemask = WRITEMASK_XYZW;
n->InstLocation = -1;
}
return n;
}
+/**
+ * Create sequence of two nodes.
+ */
static slang_ir_node *
new_seq(slang_ir_node *left, slang_ir_node *right)
{
/**
- * Inlined subroutine.
+ * Non-inlined function call.
*/
static slang_ir_node *
-new_inlined_function_call(slang_ir_node *code, slang_label *name)
+new_function_call(slang_ir_node *code, slang_label *name)
{
- slang_ir_node *n = new_node1(IR_FUNC, code);
+ slang_ir_node *n = new_node1(IR_CALL, code);
assert(name);
if (n)
n->Label = name;
* New IR_VAR node - a reference to a previously declared variable.
*/
static slang_ir_node *
-new_var(slang_assemble_ctx *A, slang_operation *oper, slang_atom name)
+new_var(slang_assemble_ctx *A, slang_variable *var)
{
slang_ir_node *n;
- slang_variable *var = _slang_locate_variable(oper->locals, name, GL_TRUE);
if (!var)
return NULL;
- assert(!oper->var || oper->var == var);
+ assert(var->declared);
n = new_node0(IR_VAR);
if (n) {
_slang_attach_storage(n, var);
+ /*
+ printf("new_var %s store=%p\n", (char*)name, (void*) n->Store);
+ */
}
return n;
}
}
+/**
+ * Count the number of operations of the given time rooted at 'oper'.
+ */
+static GLuint
+_slang_count_node_type(slang_operation *oper, slang_operation_type type)
+{
+ GLuint i, count = 0;
+ if (oper->type == type) {
+ return 1;
+ }
+ for (i = 0; i < oper->num_children; i++) {
+ count += _slang_count_node_type(&oper->children[i], type);
+ }
+ return count;
+}
+
+
+/**
+ * Check if the 'return' statement found under 'oper' is a "tail return"
+ * that can be no-op'd. For example:
+ *
+ * void func(void)
+ * {
+ * .. do something ..
+ * return; // this is a no-op
+ * }
+ *
+ * This is used when determining if a function can be inlined. If the
+ * 'return' is not the last statement, we can't inline the function since
+ * we still need the semantic behaviour of the 'return' but we don't want
+ * to accidentally return from the _calling_ function. We'd need to use an
+ * unconditional branch, but we don't have such a GPU instruction (not
+ * always, at least).
+ */
+static GLboolean
+_slang_is_tail_return(const slang_operation *oper)
+{
+ GLuint k = oper->num_children;
+
+ while (k > 0) {
+ const slang_operation *last = &oper->children[k - 1];
+ if (last->type == SLANG_OPER_RETURN)
+ return GL_TRUE;
+ else if (last->type == SLANG_OPER_IDENTIFIER ||
+ last->type == SLANG_OPER_LABEL)
+ k--; /* try prev child */
+ else if (last->type == SLANG_OPER_BLOCK_NO_NEW_SCOPE ||
+ last->type == SLANG_OPER_BLOCK_NEW_SCOPE)
+ /* try sub-children */
+ return _slang_is_tail_return(last);
+ else
+ break;
+ }
+
+ return GL_FALSE;
+}
+
+
static void
slang_resolve_variable(slang_operation *oper)
{
if (oper->type == SLANG_OPER_IDENTIFIER && !oper->var) {
- oper->var = _slang_locate_variable(oper->locals, oper->a_id, GL_TRUE);
+ oper->var = _slang_variable_locate(oper->locals, oper->a_id, GL_TRUE);
}
}
switch (oper->type) {
case SLANG_OPER_VARIABLE_DECL:
{
- slang_variable *v = _slang_locate_variable(oper->locals,
+ slang_variable *v = _slang_variable_locate(oper->locals,
oper->a_id, GL_TRUE);
assert(v);
if (v->initializer && oper->num_children == 0) {
slang_atom id = oper->a_id;
slang_variable *v;
GLuint i;
- v = _slang_locate_variable(oper->locals, id, GL_TRUE);
+ v = _slang_variable_locate(oper->locals, id, GL_TRUE);
if (!v) {
_mesa_problem(NULL, "var %s not found!\n", (char *) oper->a_id);
return;
}
-
/**
* 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:
* __asm vec4_lrp __retVal, a, y, x;
* }
*
+ *
+ * A call to
+ * r = mix(p1, p2, p3);
+ *
+ * Becomes:
+ *
+ * mov
+ * / \
+ * r vec4_lrp
+ * / | \
+ * p3 p2 p1
+ *
* We basically translate a SLANG_OPER_CALL into a SLANG_OPER_ASM.
*/
static slang_operation *
slang_operation_copy(inlined, &fun->body->children[0]);
if (haveRetValue) {
/* get rid of the __retVal child */
- for (i = 0; i < numArgs; i++) {
+ inlined->num_children--;
+ for (i = 0; i < inlined->num_children; i++) {
inlined->children[i] = inlined->children[i + 1];
}
- inlined->num_children--;
}
/* now do formal->actual substitutions */
_slang_free(substOld);
_slang_free(substNew);
+#if 0
+ printf("+++++++++++++ inlined asm function %s +++++++++++++\n",
+ (char *) fun->header.a_name);
+ slang_print_tree(inlined, 3);
+ printf("+++++++++++++++++++++++++++++++++++++++++++++++++++\n");
+#endif
+
return inlined;
}
slang_operation **substNew;
GLuint substCount, numCopyIn, i;
slang_function *prevFunction;
+ slang_variable_scope *newScope = NULL;
/* save / push */
prevFunction = A->CurFunction;
_slang_alloc(totalArgs * sizeof(slang_operation *));
#if 0
- printf("Inline call to %s (total vars=%d nparams=%d)\n",
+ printf("\nInline call to %s (total vars=%d nparams=%d)\n",
(char *) fun->header.a_name,
fun->parameters->num_variables, numArgs);
#endif
slang_operation_copy(inlined, fun->body);
/*** XXX review this */
- assert(inlined->type = SLANG_OPER_BLOCK_NO_NEW_SCOPE);
+ assert(inlined->type == SLANG_OPER_BLOCK_NO_NEW_SCOPE ||
+ inlined->type == SLANG_OPER_BLOCK_NEW_SCOPE);
inlined->type = SLANG_OPER_BLOCK_NEW_SCOPE;
#if 0
slang_operation *decl = slang_operation_insert(&inlined->num_children,
&inlined->children,
numCopyIn);
- /*
- printf("COPY_IN %s from expr\n", (char*)p->a_name);
- */
+
decl->type = SLANG_OPER_VARIABLE_DECL;
assert(decl->locals);
decl->locals->outer_scope = inlined->locals;
/* child[0] is the var's initializer */
slang_operation_copy(&decl->children[0], args + i);
+ /* add parameter 'p' to the local variable scope here */
+ {
+ slang_variable *pCopy = slang_variable_scope_grow(inlined->locals);
+ pCopy->type = p->type;
+ pCopy->a_name = p->a_name;
+ pCopy->array_len = p->array_len;
+ }
+
+ newScope = inlined->locals;
numCopyIn++;
}
}
+ /* Now add copies of the function's local vars to the new variable scope */
+ for (i = totalArgs; i < fun->parameters->num_variables; i++) {
+ slang_variable *p = fun->parameters->variables[i];
+ slang_variable *pCopy = slang_variable_scope_grow(inlined->locals);
+ pCopy->type = p->type;
+ pCopy->a_name = p->a_name;
+ pCopy->array_len = p->array_len;
+ }
+
+
/* New epilog statements:
* 1. Create end of function label to jump to from return statements.
* 2. Copy the 'out' parameter vars
_slang_free(substOld);
_slang_free(substNew);
+ /* Update scoping to use the new local vars instead of the
+ * original function's vars. This is especially important
+ * for nested inlining.
+ */
+ if (newScope)
+ slang_replace_scope(inlined, fun->parameters, newScope);
+
#if 0
- printf("Done Inline call to %s (total vars=%d nparams=%d)\n",
+ printf("Done Inline call to %s (total vars=%d nparams=%d)\n\n",
(char *) fun->header.a_name,
fun->parameters->num_variables, numArgs);
slang_print_tree(top, 0);
}
else {
/* non-assembly function */
+ /* We always generate an "inline-able" block of code here.
+ * We may either:
+ * 1. insert the inline code
+ * 2. Generate a call to the "inline" code as a subroutine
+ */
+
+
+ slang_operation *ret = NULL;
+
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);
+ if (!inlined)
+ return NULL;
+
+ ret = _slang_find_node_type(inlined, SLANG_OPER_RETURN);
+ if (ret) {
+ /* check if this is a "tail" return */
+ if (_slang_count_node_type(inlined, SLANG_OPER_RETURN) == 1 &&
+ _slang_is_tail_return(inlined)) {
+ /* The only RETURN is the last stmt in the function, no-op it
+ * and inline the function body.
+ */
+ ret->type = SLANG_OPER_NONE;
+ }
+ else {
+ slang_operation *callOper;
+ /* The function we're calling has one or more 'return' statements.
+ * So, we can't truly inline this function because we need to
+ * implement 'return' with RET (and CAL).
+ * Nevertheless, we performed "inlining" to make a new instance
+ * of the function body to deal with static register allocation.
+ *
+ * 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);
+
+ if (_slang_function_has_return_value(fun) && !dest) {
+ assert(inlined->children[0].type == SLANG_OPER_VARIABLE_DECL);
+ assert(inlined->children[2].type == SLANG_OPER_IDENTIFIER);
+ callOper = &inlined->children[1];
+ }
+ else {
+ callOper = inlined;
+ }
+ callOper->type = SLANG_OPER_NON_INLINED_CALL;
+ callOper->fun = fun;
+ callOper->label = _slang_label_new_unique((char*) fun->header.a_name);
+ }
}
}
if (!inlined)
return NULL;
- /* Replace the function call with the inlined block */
+ /* Replace the function call with the inlined block (or new CALL stmt) */
slang_operation_destruct(oper);
*oper = *inlined;
_slang_free(inlined);
}
+/**
+ * Return the default swizzle mask for accessing a variable of the
+ * given size (in floats). If size = 1, comp is used to identify
+ * which component [0..3] of the register holds the variable.
+ */
+static GLuint
+_slang_var_swizzle(GLint size, GLint comp)
+{
+ switch (size) {
+ case 1:
+ return MAKE_SWIZZLE4(comp, comp, comp, comp);
+ case 2:
+ return MAKE_SWIZZLE4(SWIZZLE_X, SWIZZLE_Y, SWIZZLE_NIL, SWIZZLE_NIL);
+ case 3:
+ return MAKE_SWIZZLE4(SWIZZLE_X, SWIZZLE_Y, SWIZZLE_Z, SWIZZLE_NIL);
+ default:
+ return SWIZZLE_XYZW;
+ }
+}
+
+
+/**
+ * Some write-masked assignments are simple, but others are hard.
+ * Simple example:
+ * vec3 v;
+ * v.xy = vec2(a, b);
+ * Hard example:
+ * vec3 v;
+ * v.zy = vec2(a, b);
+ * this gets transformed/swizzled into:
+ * v.zy = vec2(a, b).*yx* (* = don't care)
+ * This function helps to determine simple vs. non-simple.
+ */
+static GLboolean
+_slang_simple_writemask(GLuint writemask, GLuint swizzle)
+{
+ switch (writemask) {
+ case WRITEMASK_X:
+ return GET_SWZ(swizzle, 0) == SWIZZLE_X;
+ case WRITEMASK_Y:
+ return GET_SWZ(swizzle, 1) == SWIZZLE_Y;
+ case WRITEMASK_Z:
+ return GET_SWZ(swizzle, 2) == SWIZZLE_Z;
+ case WRITEMASK_W:
+ return GET_SWZ(swizzle, 3) == SWIZZLE_W;
+ case WRITEMASK_XY:
+ return (GET_SWZ(swizzle, 0) == SWIZZLE_X)
+ && (GET_SWZ(swizzle, 1) == SWIZZLE_Y);
+ case WRITEMASK_XYZ:
+ return (GET_SWZ(swizzle, 0) == SWIZZLE_X)
+ && (GET_SWZ(swizzle, 1) == SWIZZLE_Y)
+ && (GET_SWZ(swizzle, 2) == SWIZZLE_Z);
+ case WRITEMASK_XYZW:
+ return swizzle == SWIZZLE_NOOP;
+ default:
+ return GL_FALSE;
+ }
+}
+
+
+/**
+ * Convert the given swizzle into a writemask. In some cases this
+ * is trivial, in other cases, we'll need to also swizzle the right
+ * hand side to put components in the right places.
+ * See comment above for more info.
+ * XXX this function could be simplified and should probably be renamed.
+ * \param swizzle the incoming swizzle
+ * \param writemaskOut returns the writemask
+ * \param swizzleOut swizzle to apply to the right-hand-side
+ * \return GL_FALSE for simple writemasks, GL_TRUE for non-simple
+ */
+static GLboolean
+swizzle_to_writemask(slang_assemble_ctx *A, GLuint swizzle,
+ GLuint *writemaskOut, GLuint *swizzleOut)
+{
+ GLuint mask = 0x0, newSwizzle[4];
+ GLint i, size;
+
+ /* make new dst writemask, compute size */
+ for (i = 0; i < 4; i++) {
+ const GLuint swz = GET_SWZ(swizzle, i);
+ if (swz == SWIZZLE_NIL) {
+ /* end */
+ break;
+ }
+ assert(swz >= 0 && swz <= 3);
+
+ if (swizzle != SWIZZLE_XXXX &&
+ swizzle != SWIZZLE_YYYY &&
+ swizzle != SWIZZLE_ZZZZ &&
+ swizzle != SWIZZLE_WWWW &&
+ (mask & (1 << swz))) {
+ /* a channel can't be specified twice (ex: ".xyyz") */
+ slang_info_log_error(A->log, "Invalid writemask '%s'",
+ _mesa_swizzle_string(swizzle, 0, 0));
+ return GL_FALSE;
+ }
+
+ mask |= (1 << swz);
+ }
+ assert(mask <= 0xf);
+ size = i; /* number of components in mask/swizzle */
+
+ *writemaskOut = mask;
+
+ /* make new src swizzle, by inversion */
+ for (i = 0; i < 4; i++) {
+ newSwizzle[i] = i; /*identity*/
+ }
+ for (i = 0; i < size; i++) {
+ const GLuint swz = GET_SWZ(swizzle, i);
+ newSwizzle[swz] = i;
+ }
+ *swizzleOut = MAKE_SWIZZLE4(newSwizzle[0],
+ newSwizzle[1],
+ newSwizzle[2],
+ newSwizzle[3]);
+
+ if (_slang_simple_writemask(mask, *swizzleOut)) {
+ if (size >= 1)
+ assert(GET_SWZ(*swizzleOut, 0) == SWIZZLE_X);
+ if (size >= 2)
+ assert(GET_SWZ(*swizzleOut, 1) == SWIZZLE_Y);
+ if (size >= 3)
+ assert(GET_SWZ(*swizzleOut, 2) == SWIZZLE_Z);
+ if (size >= 4)
+ assert(GET_SWZ(*swizzleOut, 3) == SWIZZLE_W);
+ return GL_TRUE;
+ }
+ else
+ return GL_FALSE;
+}
+
+
+/**
+ * Recursively traverse 'oper' to produce a swizzle mask in the event
+ * of any vector subscripts and swizzle suffixes.
+ * Ex: for "vec4 v", "v[2].x" resolves to v.z
+ */
static GLuint
-make_writemask(const char *field)
+resolve_swizzle(const slang_operation *oper)
{
- GLuint mask = 0x0;
- while (*field) {
- switch (*field) {
- case 'x':
- mask |= WRITEMASK_X;
+ if (oper->type == SLANG_OPER_FIELD) {
+ /* writemask from .xyzw suffix */
+ slang_swizzle swz;
+ if (_slang_is_swizzle((char*) oper->a_id, 4, &swz)) {
+ GLuint swizzle = MAKE_SWIZZLE4(swz.swizzle[0],
+ swz.swizzle[1],
+ swz.swizzle[2],
+ swz.swizzle[3]);
+ GLuint child_swizzle = resolve_swizzle(&oper->children[0]);
+ GLuint s = _slang_swizzle_swizzle(child_swizzle, swizzle);
+ return s;
+ }
+ else
+ return SWIZZLE_XYZW;
+ }
+ else if (oper->type == SLANG_OPER_SUBSCRIPT &&
+ oper->children[1].type == SLANG_OPER_LITERAL_INT) {
+ /* writemask from [index] */
+ GLuint child_swizzle = resolve_swizzle(&oper->children[0]);
+ GLuint i = (GLuint) oper->children[1].literal[0];
+ GLuint swizzle;
+ GLuint s;
+ switch (i) {
+ case 0:
+ swizzle = SWIZZLE_XXXX;
break;
- case 'y':
- mask |= WRITEMASK_Y;
+ case 1:
+ swizzle = SWIZZLE_YYYY;
break;
- case 'z':
- mask |= WRITEMASK_Z;
+ case 2:
+ swizzle = SWIZZLE_ZZZZ;
break;
- case 'w':
- mask |= WRITEMASK_W;
+ case 3:
+ swizzle = SWIZZLE_WWWW;
break;
default:
- _mesa_problem(NULL, "invalid writemask in make_writemask()");
- return 0;
+ swizzle = SWIZZLE_XYZW;
}
- field++;
+ s = _slang_swizzle_swizzle(child_swizzle, swizzle);
+ return s;
}
- if (mask == 0x0)
- return WRITEMASK_XYZW;
- else
- return mask;
+ else {
+ return SWIZZLE_XYZW;
+ }
+}
+
+
+/**
+ * Recursively descend through swizzle nodes to find the node's storage info.
+ */
+static slang_ir_storage *
+get_store(const slang_ir_node *n)
+{
+ if (n->Opcode == IR_SWIZZLE) {
+ return get_store(n->Children[0]);
+ }
+ return n->Store;
}
+
/**
* Generate IR tree for an asm instruction/operation such as:
* __asm vec4_dot __retVal.x, v1, v2;
if (info->NumParams == oper->num_children) {
/* Storage for result is not specified.
- * Children[0], [1] are the operands.
+ * Children[0], [1], [2] are the operands.
*/
firstOperand = 0;
}
else {
/* Storage for result (child[0]) is specified.
- * Children[1], [2] are the operands.
+ * Children[1], [2], [3] are the operands.
*/
firstOperand = 1;
}
/* Setup n->Store to be a particular location. Otherwise, storage
* for the result (a temporary) will be allocated later.
*/
- GLuint writemask = WRITEMASK_XYZW;
slang_operation *dest_oper;
slang_ir_node *n0;
dest_oper = &oper->children[0];
- while (dest_oper->type == SLANG_OPER_FIELD) {
- /* writemask */
- writemask &= make_writemask((char*) dest_oper->a_id);
- dest_oper = &dest_oper->children[0];
- }
n0 = _slang_gen_operation(A, dest_oper);
- assert(n0->Var);
- assert(n0->Store);
+ if (!n0)
+ return NULL;
+
assert(!n->Store);
n->Store = n0->Store;
- n->Writemask = writemask;
+
+ assert(n->Store->File != PROGRAM_UNDEFINED || n->Store->Parent);
_slang_free(n0);
}
/**
- * Return first function in the scope that has the given name.
+ * Find a function of the given name, taking 'numArgs' arguments.
* This is the function we'll try to call when there is no exact match
* between function parameters and call arguments.
*
* all of them...
*/
static slang_function *
-_slang_first_function(struct slang_function_scope_ *scope, const char *name)
+_slang_find_function_by_argc(slang_function_scope *scope,
+ const char *name, int numArgs)
{
- GLuint i;
- for (i = 0; i < scope->num_functions; i++) {
- slang_function *f = &scope->functions[i];
- if (strcmp(name, (char*) f->header.a_name) == 0)
- return f;
+ while (scope) {
+ GLuint i;
+ for (i = 0; i < scope->num_functions; i++) {
+ slang_function *f = &scope->functions[i];
+ if (strcmp(name, (char*) f->header.a_name) == 0) {
+ int haveRetValue = _slang_function_has_return_value(f);
+ if (numArgs == f->param_count - haveRetValue)
+ return f;
+ }
+ }
+ scope = scope->outer_scope;
}
- if (scope->outer_scope)
- return _slang_first_function(scope->outer_scope, name);
+
return NULL;
}
+static slang_function *
+_slang_find_function_by_max_argc(slang_function_scope *scope,
+ const char *name)
+{
+ slang_function *maxFunc = NULL;
+ GLuint maxArgs = 0;
+
+ while (scope) {
+ GLuint i;
+ for (i = 0; i < scope->num_functions; i++) {
+ slang_function *f = &scope->functions[i];
+ if (strcmp(name, (char*) f->header.a_name) == 0) {
+ if (f->param_count > maxArgs) {
+ maxArgs = f->param_count;
+ maxFunc = f;
+ }
+ }
+ }
+ scope = scope->outer_scope;
+ }
+
+ return maxFunc;
+}
+
/**
- * Assemble a function call, given a particular function name.
- * \param name the function's name (operators like '*' are possible).
+ * Generate a new slang_function which is a constructor for a user-defined
+ * struct type.
*/
-static slang_ir_node *
-_slang_gen_function_call_name(slang_assemble_ctx *A, const char *name,
- slang_operation *oper, slang_operation *dest)
+static slang_function *
+_slang_make_struct_constructor(slang_assemble_ctx *A, slang_struct *str)
{
- slang_operation *params = oper->children;
- const GLuint param_count = oper->num_children;
- slang_atom atom;
- slang_function *fun;
+ const GLint numFields = str->fields->num_variables;
+ slang_function *fun = slang_function_new(SLANG_FUNC_CONSTRUCTOR);
- atom = slang_atom_pool_atom(A->atoms, name);
- if (atom == SLANG_ATOM_NULL)
- return NULL;
+ /* function header (name, return type) */
+ fun->header.a_name = str->a_name;
+ fun->header.type.qualifier = SLANG_QUAL_NONE;
+ fun->header.type.specifier.type = SLANG_SPEC_STRUCT;
+ fun->header.type.specifier._struct = str;
- /*
- * Use 'name' to find the function to call
- */
- fun = _slang_locate_function(A->space.funcs, atom, params, param_count,
- &A->space, A->atoms, A->log);
- if (!fun) {
- /* A function with exactly the right parameters/types was not found.
- * Try adapting the parameters.
- */
- fun = _slang_first_function(A->space.funcs, name);
- 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;
+ /* function parameters (= struct's fields) */
+ {
+ GLint i;
+ for (i = 0; i < numFields; i++) {
+ /*
+ printf("Field %d: %s\n", i, (char*) str->fields->variables[i]->a_name);
+ */
+ slang_variable *p = slang_variable_scope_grow(fun->parameters);
+ *p = *str->fields->variables[i]; /* copy the type */
+ p->type.qualifier = SLANG_QUAL_CONST;
}
- assert(fun);
+ fun->param_count = fun->parameters->num_variables;
}
- return _slang_gen_function_call(A, fun, oper, dest);
-}
+ /* Add __retVal to params */
+ {
+ slang_variable *p = slang_variable_scope_grow(fun->parameters);
+ slang_atom a_retVal = slang_atom_pool_atom(A->atoms, "__retVal");
+ assert(a_retVal);
+ p->a_name = a_retVal;
+ p->type = fun->header.type;
+ p->type.qualifier = SLANG_QUAL_OUT;
+ fun->param_count++;
+ }
+
+ /* function body is:
+ * block:
+ * declare T;
+ * T.f1 = p1;
+ * T.f2 = p2;
+ * ...
+ * T.fn = pn;
+ * return T;
+ */
+ {
+ slang_variable_scope *scope;
+ slang_variable *var;
+ GLint i;
+
+ fun->body = slang_operation_new(1);
+ fun->body->type = SLANG_OPER_BLOCK_NEW_SCOPE;
+ fun->body->num_children = numFields + 2;
+ fun->body->children = slang_operation_new(numFields + 2);
+
+ scope = fun->body->locals;
+ scope->outer_scope = fun->parameters;
+
+ /* create local var 't' */
+ var = slang_variable_scope_grow(scope);
+ var->a_name = slang_atom_pool_atom(A->atoms, "t");
+ var->type = fun->header.type;
+
+ /* declare t */
+ {
+ slang_operation *decl;
+
+ decl = &fun->body->children[0];
+ decl->type = SLANG_OPER_VARIABLE_DECL;
+ decl->locals = _slang_variable_scope_new(scope);
+ decl->a_id = var->a_name;
+ }
+
+ /* assign params to fields of t */
+ for (i = 0; i < numFields; i++) {
+ slang_operation *assign = &fun->body->children[1 + i];
+
+ assign->type = SLANG_OPER_ASSIGN;
+ assign->locals = _slang_variable_scope_new(scope);
+ assign->num_children = 2;
+ assign->children = slang_operation_new(2);
+
+ {
+ slang_operation *lhs = &assign->children[0];
+
+ lhs->type = SLANG_OPER_FIELD;
+ lhs->locals = _slang_variable_scope_new(scope);
+ lhs->num_children = 1;
+ lhs->children = slang_operation_new(1);
+ lhs->a_id = str->fields->variables[i]->a_name;
+
+ lhs->children[0].type = SLANG_OPER_IDENTIFIER;
+ lhs->children[0].a_id = var->a_name;
+ lhs->children[0].locals = _slang_variable_scope_new(scope);
+
+#if 0
+ lhs->children[1].num_children = 1;
+ lhs->children[1].children = slang_operation_new(1);
+ lhs->children[1].children[0].type = SLANG_OPER_IDENTIFIER;
+ lhs->children[1].children[0].a_id = str->fields->variables[i]->a_name;
+ lhs->children[1].children->locals = _slang_variable_scope_new(scope);
+#endif
+ }
+
+ {
+ slang_operation *rhs = &assign->children[1];
+
+ rhs->type = SLANG_OPER_IDENTIFIER;
+ rhs->locals = _slang_variable_scope_new(scope);
+ rhs->a_id = str->fields->variables[i]->a_name;
+ }
+ }
+
+ /* return t; */
+ {
+ slang_operation *ret = &fun->body->children[numFields + 1];
+
+ ret->type = SLANG_OPER_RETURN;
+ ret->locals = _slang_variable_scope_new(scope);
+ ret->num_children = 1;
+ ret->children = slang_operation_new(1);
+ ret->children[0].type = SLANG_OPER_IDENTIFIER;
+ ret->children[0].a_id = var->a_name;
+ ret->children[0].locals = _slang_variable_scope_new(scope);
+ }
+ }
+ /*
+ slang_print_function(fun, 1);
+ */
+ return fun;
+}
+
+
+/**
+ * Find/create a function (constructor) for the given structure name.
+ */
+static slang_function *
+_slang_locate_struct_constructor(slang_assemble_ctx *A, const char *name)
+{
+ unsigned int i;
+ for (i = 0; i < A->space.structs->num_structs; i++) {
+ slang_struct *str = &A->space.structs->structs[i];
+ if (strcmp(name, (const char *) str->a_name) == 0) {
+ /* found a structure type that matches the function name */
+ if (!str->constructor) {
+ /* create the constructor function now */
+ str->constructor = _slang_make_struct_constructor(A, str);
+ }
+ return str->constructor;
+ }
+ }
+ return NULL;
+}
+
+
+/**
+ * Generate a new slang_function to satisfy a call to an array constructor.
+ * Ex: float[3](1., 2., 3.)
+ */
+static slang_function *
+_slang_make_array_constructor(slang_assemble_ctx *A, slang_operation *oper)
+{
+ slang_function *fun = slang_function_new(SLANG_FUNC_CONSTRUCTOR);
+ if (fun) {
+ slang_type_specifier_type baseType =
+ slang_type_specifier_type_from_string((char *) oper->a_id);
+
+ fun->header.a_name = oper->a_id;
+ fun->header.type.qualifier = SLANG_QUAL_NONE;
+ fun->header.type.specifier.type = SLANG_SPEC_ARRAY;
+ fun->header.type.specifier._array =
+ slang_type_specifier_new(baseType, NULL, NULL);
+
+
+ }
+ return fun;
+}
+
+
+static GLboolean
+_slang_is_vec_mat_type(const char *name)
+{
+ static const char *vecmat_types[] = {
+ "float", "int", "bool",
+ "vec2", "vec3", "vec4",
+ "ivec2", "ivec3", "ivec4",
+ "bvec2", "bvec3", "bvec4",
+ "mat2", "mat3", "mat4",
+ "mat2x3", "mat2x4", "mat3x2", "mat3x4", "mat4x2", "mat4x3",
+ NULL
+ };
+ int i;
+ for (i = 0; vecmat_types[i]; i++)
+ if (_mesa_strcmp(name, vecmat_types[i]) == 0)
+ return GL_TRUE;
+ return GL_FALSE;
+}
+
+
+/**
+ * Assemble a function call, given a particular function name.
+ * \param name the function's name (operators like '*' are possible).
+ */
+static slang_ir_node *
+_slang_gen_function_call_name(slang_assemble_ctx *A, const char *name,
+ slang_operation *oper, slang_operation *dest)
+{
+ slang_operation *params = oper->children;
+ const GLuint param_count = oper->num_children;
+ slang_atom atom;
+ slang_function *fun;
+ GLboolean error;
+ slang_ir_node *n;
+
+ atom = slang_atom_pool_atom(A->atoms, name);
+ if (atom == SLANG_ATOM_NULL)
+ return NULL;
+
+ if (oper->array_constructor) {
+ /* this needs special handling */
+ fun = _slang_make_array_constructor(A, oper);
+ }
+ else {
+ /* Try to find function by name and exact argument type matching */
+ fun = _slang_function_locate(A->space.funcs, atom, params, param_count,
+ &A->space, A->atoms, A->log, &error);
+ }
+
+ if (error) {
+ slang_info_log_error(A->log,
+ "Function '%s' not found (check argument types)",
+ name);
+ return NULL;
+ }
+
+ if (!fun) {
+ /* Next, try locating a constructor function for a user-defined type */
+ fun = _slang_locate_struct_constructor(A, name);
+ }
+
+ /*
+ * At this point, some heuristics are used to try to find a function
+ * that matches the calling signature by means of casting or "unrolling"
+ * of constructors.
+ */
+
+ if (!fun && _slang_is_vec_mat_type(name)) {
+ /* Next, if this call looks like a vec() or mat() constructor call,
+ * try "unwinding" the args to satisfy a constructor.
+ */
+ fun = _slang_find_function_by_max_argc(A->space.funcs, name);
+ if (fun) {
+ if (!_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;
+ }
+ }
+ }
+
+ if (!fun && _slang_is_vec_mat_type(name)) {
+ /* Next, try casting args to the types of the formal parameters */
+ int numArgs = oper->num_children;
+ fun = _slang_find_function_by_argc(A->space.funcs, name, numArgs);
+ if (!fun || !_slang_cast_func_params(oper, fun, &A->space, A->atoms, A->log)) {
+ slang_info_log_error(A->log,
+ "Function '%s' not found (check argument types)",
+ name);
+ return NULL;
+ }
+ assert(fun);
+ }
+
+ if (!fun) {
+ slang_info_log_error(A->log,
+ "Function '%s' not found (check argument types)",
+ name);
+ return NULL;
+ }
+ if (!fun->body) {
+ slang_info_log_error(A->log,
+ "Function '%s' prototyped but not defined. "
+ "Separate compilation units not supported.",
+ name);
+ return NULL;
+ }
+
+ /* type checking to be sure function's return type matches 'dest' type */
+ if (dest) {
+ slang_typeinfo t0;
+
+ slang_typeinfo_construct(&t0);
+ typeof_operation(A, dest, &t0);
+
+ if (!slang_type_specifier_equal(&t0.spec, &fun->header.type.specifier)) {
+ slang_info_log_error(A->log,
+ "Incompatible type returned by call to '%s'",
+ name);
+ return NULL;
+ }
+ }
+
+ n = _slang_gen_function_call(A, fun, oper, dest);
+
+ if (n && !n->Store && !dest
+ && fun->header.type.specifier.type != SLANG_SPEC_VOID) {
+ /* setup n->Store for the result of the function call */
+ GLint size = _slang_sizeof_type_specifier(&fun->header.type.specifier);
+ n->Store = _slang_new_ir_storage(PROGRAM_TEMPORARY, -1, size);
+ /*printf("Alloc storage for function result, size %d \n", size);*/
+ }
+
+ return n;
+}
+
+
+static slang_ir_node *
+_slang_gen_method_call(slang_assemble_ctx *A, slang_operation *oper)
+{
+ slang_atom *a_length = slang_atom_pool_atom(A->atoms, "length");
+ slang_ir_node *n;
+ slang_variable *var;
+
+ /* NOTE: In GLSL 1.20, there's only one kind of method
+ * call: array.length(). Anything else is an error.
+ */
+ if (oper->a_id != a_length) {
+ slang_info_log_error(A->log,
+ "Undefined method call '%s'", (char *) oper->a_id);
+ return NULL;
+ }
+
+ /* length() takes no arguments */
+ if (oper->num_children > 0) {
+ slang_info_log_error(A->log, "Invalid arguments to length() method");
+ return NULL;
+ }
+
+ /* lookup the object/variable */
+ var = _slang_variable_locate(oper->locals, oper->a_obj, GL_TRUE);
+ if (!var || var->type.specifier.type != SLANG_SPEC_ARRAY) {
+ slang_info_log_error(A->log,
+ "Undefined object '%s'", (char *) oper->a_obj);
+ return NULL;
+ }
+
+ /* Create a float/literal IR node encoding the array length */
+ n = new_node0(IR_FLOAT);
+ if (n) {
+ n->Value[0] = (float) var->array_len;
+ n->Store = _slang_new_ir_storage(PROGRAM_CONSTANT, -1, 1);
+ }
+ return n;
+}
static GLboolean
GLint size;
slang_typeinfo_construct(&type);
- _slang_typeof_operation(A, oper, &type);
+ typeof_operation(A, oper, &type);
size = _slang_sizeof_type_specifier(&type.spec);
slang_typeinfo_destruct(&type);
return size == 1;
}
+/**
+ * Test if an operation is boolean.
+ */
+static GLboolean
+_slang_is_boolean(slang_assemble_ctx *A, slang_operation *oper)
+{
+ slang_typeinfo type;
+ GLboolean isBool;
+
+ slang_typeinfo_construct(&type);
+ typeof_operation(A, oper, &type);
+ isBool = (type.spec.type == SLANG_SPEC_BOOL);
+ slang_typeinfo_destruct(&type);
+ return isBool;
+}
+
+
/**
* Generate loop code using high-level IR_LOOP instruction
*/
GLboolean isConst, constTrue;
/* type-check expression */
- if (!_slang_is_scalar_or_boolean(A, &oper->children[0])) {
+ if (!_slang_is_boolean(A, &oper->children[0])) {
slang_info_log_error(A->log, "scalar/boolean expression expected for 'while'");
return NULL;
}
GLboolean isConst, constTrue;
/* type-check expression */
- if (!_slang_is_scalar_or_boolean(A, &oper->children[1])) {
+ if (!_slang_is_boolean(A, &oper->children[1])) {
slang_info_log_error(A->log, "scalar/boolean expression expected for 'do/while'");
return NULL;
}
GLboolean isConst, constTrue;
/* type-check expression */
+ if (!_slang_is_boolean(A, &oper->children[0])) {
+ slang_info_log_error(A->log, "boolean expression expected for 'if'");
+ return NULL;
+ }
+
if (!_slang_is_scalar_or_boolean(A, &oper->children[0])) {
slang_info_log_error(A->log, "scalar/boolean expression expected for 'if'");
return NULL;
cond = _slang_gen_operation(A, &oper->children[0]);
cond = new_cond(cond);
- if (is_operation_type(&oper->children[1], SLANG_OPER_BREAK)) {
+ if (is_operation_type(&oper->children[1], SLANG_OPER_BREAK)
+ && !haveElseClause) {
/* Special case: generate a conditional break */
ifBody = new_break_if_true(A->CurLoop, cond);
- if (haveElseClause) {
- elseBody = _slang_gen_operation(A, &oper->children[2]);
- return new_seq(ifBody, elseBody);
- }
return ifBody;
}
- else if (is_operation_type(&oper->children[1], SLANG_OPER_CONTINUE)) {
+ else if (is_operation_type(&oper->children[1], SLANG_OPER_CONTINUE)
+ && !haveElseClause) {
/* Special case: generate a conditional break */
ifBody = new_cont_if_true(A->CurLoop, cond);
- if (haveElseClause) {
- elseBody = _slang_gen_operation(A, &oper->children[2]);
- return new_seq(ifBody, elseBody);
- }
return ifBody;
}
else {
slang_ir_storage *store;
slang_ir_node *n = NULL;
- store = _slang_new_ir_storage(PROGRAM_TEMPORARY, -1, size);
+ store = _slang_new_ir_storage(PROGRAM_TEMPORARY, -2, size);
if (store) {
n = new_node0(IR_VAR_DECL);
if (n) {
/**
* Generate IR node for allocating/declaring a variable.
+ * \param initializer Optional initializer expression for the variable.
*/
static slang_ir_node *
-_slang_gen_var_decl(slang_assemble_ctx *A, slang_variable *var)
+_slang_gen_var_decl(slang_assemble_ctx *A, slang_variable *var,
+ slang_operation *initializer)
{
- slang_ir_node *n;
- assert(!is_sampler_type(&var->type));
- n = new_node0(IR_VAR_DECL);
- if (n) {
- _slang_attach_storage(n, var);
+ slang_ir_node *varDecl, *n;
+ slang_ir_storage *store;
- assert(var->aux);
- assert(n->Store == var->aux);
- assert(n->Store);
- assert(n->Store->Index < 0);
+ /*assert(!var->declared);*/
+ var->declared = GL_TRUE;
+
+ varDecl = new_node0(IR_VAR_DECL);
+ if (!varDecl)
+ return NULL;
+
+ _slang_attach_storage(varDecl, var);
+ assert(var->store);
+ assert(varDecl->Store == var->store);
+ assert(varDecl->Store);
+ assert(varDecl->Store->Index < 0);
+ store = var->store;
+
+ assert(store == varDecl->Store);
+
+ /* determine GPU storage file */
+ /* XXX if the variable is const, use PROGRAM_CONSTANT */
+ if (is_sampler_type(&var->type)) {
+ store->File = PROGRAM_SAMPLER;
+ }
+ else {
+ store->File = PROGRAM_TEMPORARY;
+ }
- n->Store->File = PROGRAM_TEMPORARY;
- n->Store->Size = _slang_sizeof_type_specifier(&n->Var->type.specifier);
- assert(n->Store->Size > 0);
+ store->Size = _slang_sizeof_type_specifier(&varDecl->Var->type.specifier);
+
+ if (store->Size <= 0) {
+ slang_info_log_error(A->log, "invalid declaration for '%s'",
+ (char*) var->a_name);
+ return NULL;
+ }
+
+#if 0
+ printf("%s var %p %s store=%p index=%d size=%d\n",
+ __FUNCTION__, (void *) var, (char *) var->a_name,
+ (void *) store, store->Index, store->Size);
+#endif
+
+ if (var->array_len > 0) {
+ /* this is an array */
+ /* round up the element size to a multiple of 4 */
+ GLint sz = (store->Size + 3) & ~3;
+ /* total size = element size * array length */
+ sz *= var->array_len;
+ store->Size = sz;
+ }
+
+ /* setup default swizzle for storing the variable */
+ /* XXX this may not be needed anymore - remove & test */
+ switch (store->Size) {
+ case 2:
+ store->Swizzle = MAKE_SWIZZLE4(SWIZZLE_X, SWIZZLE_Y,
+ SWIZZLE_NIL, SWIZZLE_NIL);
+ break;
+ case 3:
+ store->Swizzle = MAKE_SWIZZLE4(SWIZZLE_X, SWIZZLE_Y,
+ SWIZZLE_Z, SWIZZLE_NIL);
+ break;
+ default:
+ /* Note that float-sized vars may be allocated in any x/y/z/w
+ * slot, but that won't be determined until code emit time.
+ */
+ store->Swizzle = SWIZZLE_NOOP;
+ }
+
+ /* if there's an initializer, generate IR for the expression */
+ if (initializer) {
+ const char *varName = (const char *) var->a_name;
+ slang_ir_node *varRef, *init;
+
+ varRef = new_var(A, var);
+ if (!varRef) {
+ slang_info_log_error(A->log, "undefined variable '%s'", varName);
+ return NULL;
+ }
+
+ if (var->type.qualifier == SLANG_QUAL_CONST) {
+ /* if the variable is const, the initializer must be a const
+ * expression as well.
+ */
+#if 0
+ if (!_slang_is_constant_expr(initializer)) {
+ slang_info_log_error(A->log,
+ "initializer for %s not constant", varName);
+ return NULL;
+ }
+#endif
+ }
+
+ /* constant-folding, etc here */
+ _slang_simplify(initializer, &A->space, A->atoms);
+
+ init = _slang_gen_operation(A, initializer);
+ if (!init)
+ return NULL;
+
+ /*assert(init->Store);*/
+
+ /* XXX remove this when type checking is added above */
+ if (init->Store && varRef->Store->Size != init->Store->Size) {
+ slang_info_log_error(A->log, "invalid assignment (wrong types)");
+ return NULL;
+ }
+
+ n = new_node2(IR_COPY, varRef, init);
+ n = new_seq(varDecl, n);
}
+ else {
+ /* no initializer */
+ n = varDecl;
+ }
+
return n;
}
{
slang_ir_node *cond, *ifNode, *trueExpr, *falseExpr, *trueNode, *falseNode;
slang_ir_node *tmpDecl, *tmpVar, *tree;
- slang_typeinfo type;
- int size;
+ slang_typeinfo type0, type1, type2;
+ int size, isBool, isEqual;
assert(oper->type == SLANG_OPER_SELECT);
assert(oper->num_children == 3);
+ /* type of children[0] must be boolean */
+ slang_typeinfo_construct(&type0);
+ typeof_operation(A, &oper->children[0], &type0);
+ isBool = (type0.spec.type == SLANG_SPEC_BOOL);
+ slang_typeinfo_destruct(&type0);
+ if (!isBool) {
+ slang_info_log_error(A->log, "selector type is not boolean");
+ return NULL;
+ }
+
+ slang_typeinfo_construct(&type1);
+ slang_typeinfo_construct(&type2);
+ typeof_operation(A, &oper->children[1], &type1);
+ typeof_operation(A, &oper->children[2], &type2);
+ isEqual = slang_type_specifier_equal(&type1.spec, &type2.spec);
+ slang_typeinfo_destruct(&type1);
+ slang_typeinfo_destruct(&type2);
+ if (!isEqual) {
+ slang_info_log_error(A->log, "incompatible types for ?: operator");
+ return NULL;
+ }
+
/* size of x or y's type */
- slang_typeinfo_construct(&type);
- _slang_typeof_operation(A, &oper->children[1], &type);
- size = _slang_sizeof_type_specifier(&type.spec);
+ size = _slang_sizeof_type_specifier(&type1.spec);
assert(size > 0);
/* temporary var */
tmpVar = new_node0(IR_VAR);
tmpVar->Store = tmpDecl->Store;
trueExpr = _slang_gen_operation(A, &oper->children[1]);
- trueNode = new_node2(IR_MOVE, tmpVar, trueExpr);
+ trueNode = new_node2(IR_COPY, tmpVar, trueExpr);
/* if-false body (child 2) */
tmpVar = new_node0(IR_VAR);
tmpVar->Store = tmpDecl->Store;
falseExpr = _slang_gen_operation(A, &oper->children[2]);
- falseNode = new_node2(IR_MOVE, tmpVar, falseExpr);
+ falseNode = new_node2(IR_COPY, tmpVar, falseExpr);
ifNode = new_if(cond, trueNode, falseNode);
_slang_gen_return(slang_assemble_ctx * A, slang_operation *oper)
{
const GLboolean haveReturnValue
- = (oper->num_children == 1 &&
- oper->children[0].type != SLANG_OPER_VOID);
+ = (oper->num_children == 1 && oper->children[0].type != SLANG_OPER_VOID);
/* error checking */
assert(A->CurFunction);
return NULL;
}
else if (!haveReturnValue &&
- A->CurFunction->header.type.specifier.type != SLANG_SPEC_VOID) {
+ A->CurFunction->header.type.specifier.type != SLANG_SPEC_VOID) {
slang_info_log_error(A->log, "return statement requires an expression");
return NULL;
}
#if 1 /* DEBUG */
{
- slang_variable *v
- = _slang_locate_variable(oper->locals, a_retVal, GL_TRUE);
+ slang_variable *v =
+ _slang_variable_locate(oper->locals, a_retVal, GL_TRUE);
if (!v) {
/* trying to return a value in a void-valued function */
return NULL;
/**
- * Generate IR tree for a variable declaration.
+ * Determine if the given operation/expression is const-valued.
+ */
+static GLboolean
+_slang_is_constant_expr(const slang_operation *oper)
+{
+ slang_variable *var;
+ GLuint i;
+
+ switch (oper->type) {
+ case SLANG_OPER_IDENTIFIER:
+ var = _slang_variable_locate(oper->locals, oper->a_id, GL_TRUE);
+ if (var && var->type.qualifier == SLANG_QUAL_CONST)
+ return GL_TRUE;
+ return GL_FALSE;
+ default:
+ for (i = 0; i < oper->num_children; i++) {
+ if (!_slang_is_constant_expr(&oper->children[i]))
+ return GL_FALSE;
+ }
+ return GL_TRUE;
+ }
+}
+
+
+/**
+ * Check if an assignment of type t1 to t0 is legal.
+ * XXX more cases needed.
+ */
+static GLboolean
+_slang_assignment_compatible(slang_assemble_ctx *A,
+ slang_operation *op0,
+ slang_operation *op1)
+{
+ slang_typeinfo t0, t1;
+ GLuint sz0, sz1;
+
+ if (op0->type == SLANG_OPER_POSTINCREMENT ||
+ op0->type == SLANG_OPER_POSTDECREMENT) {
+ return GL_FALSE;
+ }
+
+ slang_typeinfo_construct(&t0);
+ typeof_operation(A, op0, &t0);
+
+ slang_typeinfo_construct(&t1);
+ typeof_operation(A, op1, &t1);
+
+ sz0 = _slang_sizeof_type_specifier(&t0.spec);
+ sz1 = _slang_sizeof_type_specifier(&t1.spec);
+
+#if 1
+ if (sz0 != sz1) {
+ /*printf("assignment size mismatch %u vs %u\n", sz0, sz1);*/
+ return GL_FALSE;
+ }
+#endif
+
+ if (t0.spec.type == SLANG_SPEC_STRUCT &&
+ t1.spec.type == SLANG_SPEC_STRUCT &&
+ t0.spec._struct->a_name != t1.spec._struct->a_name)
+ return GL_FALSE;
+
+ if (t0.spec.type == SLANG_SPEC_FLOAT &&
+ t1.spec.type == SLANG_SPEC_BOOL)
+ return GL_FALSE;
+
+#if 0 /* not used just yet - causes problems elsewhere */
+ if (t0.spec.type == SLANG_SPEC_INT &&
+ t1.spec.type == SLANG_SPEC_FLOAT)
+ return GL_FALSE;
+#endif
+
+ if (t0.spec.type == SLANG_SPEC_BOOL &&
+ t1.spec.type == SLANG_SPEC_FLOAT)
+ return GL_FALSE;
+
+ if (t0.spec.type == SLANG_SPEC_BOOL &&
+ t1.spec.type == SLANG_SPEC_INT)
+ return GL_FALSE;
+
+ return GL_TRUE;
+}
+
+
+
+/**
+ * Generate IR tree for a local variable declaration.
*/
static slang_ir_node *
_slang_gen_declaration(slang_assemble_ctx *A, slang_operation *oper)
{
- slang_ir_node *n;
- slang_ir_node *varDecl;
- slang_variable *v;
const char *varName = (char *) oper->a_id;
+ slang_variable *var;
+ slang_ir_node *varDecl;
+ slang_operation *initializer;
- assert(oper->num_children == 0 || oper->num_children == 1);
-
- v = _slang_locate_variable(oper->locals, oper->a_id, GL_TRUE);
- assert(v);
+ assert(oper->type == SLANG_OPER_VARIABLE_DECL);
+ assert(oper->num_children <= 1);
- varDecl = _slang_gen_var_decl(A, v);
+ /* lookup the variable by name */
+ var = _slang_variable_locate(oper->locals, oper->a_id, GL_TRUE);
+ if (!var)
+ return NULL; /* "shouldn't happen" */
- if (oper->num_children > 0) {
- /* child is initializer */
- slang_ir_node *var, *init, *rhs;
- assert(oper->num_children == 1);
- var = new_var(A, oper, oper->a_id);
- if (!var) {
- slang_info_log_error(A->log, "undefined variable '%s'", varName);
- return NULL;
- }
- /* XXX make copy of this initializer? */
- rhs = _slang_gen_operation(A, &oper->children[0]);
- assert(rhs);
- init = new_node2(IR_MOVE, var, rhs);
- /*assert(rhs->Opcode != IR_SEQ);*/
- n = new_seq(varDecl, init);
+ if (var->type.qualifier == SLANG_QUAL_ATTRIBUTE ||
+ var->type.qualifier == SLANG_QUAL_VARYING ||
+ var->type.qualifier == SLANG_QUAL_UNIFORM) {
+ /* can't declare attribute/uniform vars inside functions */
+ slang_info_log_error(A->log,
+ "local variable '%s' cannot be an attribute/uniform/varying",
+ varName);
+ return NULL;
}
- else if (v->initializer) {
- slang_ir_node *var, *init, *rhs;
- var = new_var(A, oper, oper->a_id);
- if (!var) {
- slang_info_log_error(A->log, "undefined variable '%s'", varName);
- return NULL;
- }
+
#if 0
- /* XXX make copy of this initializer? */
- {
- slang_operation dup;
- slang_operation_construct(&dup);
- slang_operation_copy(&dup, v->initializer);
- _slang_simplify(&dup, &A->space, A->atoms);
- rhs = _slang_gen_operation(A, &dup);
- }
-#else
- _slang_simplify(v->initializer, &A->space, A->atoms);
- rhs = _slang_gen_operation(A, v->initializer);
+ if (v->declared) {
+ slang_info_log_error(A->log, "variable '%s' redeclared", varName);
+ return NULL;
+ }
#endif
- if (!rhs)
- return NULL;
- assert(rhs);
- init = new_node2(IR_MOVE, var, rhs);
- /*
- assert(rhs->Opcode != IR_SEQ);
- */
- n = new_seq(varDecl, init);
+ /* check if the var has an initializer */
+ if (oper->num_children > 0) {
+ assert(oper->num_children == 1);
+ initializer = &oper->children[0];
+ }
+ else if (var->initializer) {
+ initializer = var->initializer;
}
else {
- n = varDecl;
+ initializer = NULL;
}
- return n;
+
+ if (initializer) {
+ /* check/compare var type and initializer type */
+ if (!_slang_assignment_compatible(A, oper, initializer)) {
+ slang_info_log_error(A->log, "incompatible types in assignment");
+ return NULL;
+ }
+ }
+
+ /* Generate IR node */
+ varDecl = _slang_gen_var_decl(A, var, initializer);
+ if (!varDecl)
+ return NULL;
+
+ if (var->type.qualifier == SLANG_QUAL_CONST && !initializer) {
+ slang_info_log_error(A->log,
+ "const-qualified variable '%s' requires initializer",
+ varName);
+ return NULL;
+ }
+
+ return varDecl;
}
/* If there's a variable associated with this oper (from inlining)
* use it. Otherwise, use the oper's var id.
*/
- slang_atom aVar = oper->var ? oper->var->a_name : oper->a_id;
- slang_ir_node *n = new_var(A, oper, aVar);
+ slang_atom name = oper->var ? oper->var->a_name : oper->a_id;
+ slang_variable *var = _slang_variable_locate(oper->locals, name, GL_TRUE);
+ slang_ir_node *n = new_var(A, var);
if (!n) {
- slang_info_log_error(A->log, "undefined variable '%s'", (char *) aVar);
+ slang_info_log_error(A->log, "undefined variable '%s'", (char *) name);
return NULL;
}
return n;
}
-/**
- * Some write-masked assignments are simple, but others are hard.
- * Simple example:
- * vec3 v;
- * v.xy = vec2(a, b);
- * Hard example:
- * vec3 v;
- * v.zy = vec2(a, b);
- * this gets transformed/swizzled into:
- * v.zy = vec2(a, b).*yx* (* = don't care)
- * This function helps to determine simple vs. non-simple.
- */
-static GLboolean
-_slang_simple_writemask(GLuint writemask, GLuint swizzle)
-{
- switch (writemask) {
- case WRITEMASK_X:
- return GET_SWZ(swizzle, 0) == SWIZZLE_X;
- case WRITEMASK_Y:
- return GET_SWZ(swizzle, 1) == SWIZZLE_Y;
- case WRITEMASK_Z:
- return GET_SWZ(swizzle, 2) == SWIZZLE_Z;
- case WRITEMASK_W:
- return GET_SWZ(swizzle, 3) == SWIZZLE_W;
- case WRITEMASK_XY:
- return (GET_SWZ(swizzle, 0) == SWIZZLE_X)
- && (GET_SWZ(swizzle, 1) == SWIZZLE_Y);
- case WRITEMASK_XYZ:
- return (GET_SWZ(swizzle, 0) == SWIZZLE_X)
- && (GET_SWZ(swizzle, 1) == SWIZZLE_Y)
- && (GET_SWZ(swizzle, 2) == SWIZZLE_Z);
- case WRITEMASK_XYZW:
- return swizzle == SWIZZLE_NOOP;
- default:
- return GL_FALSE;
- }
-}
-
/**
- * Convert the given swizzle into a writemask. In some cases this
- * is trivial, in other cases, we'll need to also swizzle the right
- * hand side to put components in the right places.
- * \param swizzle the incoming swizzle
- * \param writemaskOut returns the writemask
- * \param swizzleOut swizzle to apply to the right-hand-side
- * \return GL_FALSE for simple writemasks, GL_TRUE for non-simple
+ * Return the number of components actually named by the swizzle.
+ * Recall that swizzles may have undefined/don't-care values.
*/
-static GLboolean
-swizzle_to_writemask(GLuint swizzle,
- GLuint *writemaskOut, GLuint *swizzleOut)
+static GLuint
+swizzle_size(GLuint swizzle)
{
- GLuint mask = 0x0, newSwizzle[4];
- GLint i, size;
-
- /* make new dst writemask, compute size */
- for (i = 0; i < 4; i++) {
- const GLuint swz = GET_SWZ(swizzle, i);
- if (swz == SWIZZLE_NIL) {
- /* end */
- break;
- }
- assert(swz >= 0 && swz <= 3);
- mask |= (1 << swz);
- }
- assert(mask <= 0xf);
- size = i; /* number of components in mask/swizzle */
-
- *writemaskOut = mask;
-
- /* make new src swizzle, by inversion */
+ GLuint size = 0, i;
for (i = 0; i < 4; i++) {
- newSwizzle[i] = i; /*identity*/
- }
- for (i = 0; i < size; i++) {
- const GLuint swz = GET_SWZ(swizzle, i);
- newSwizzle[swz] = i;
- }
- *swizzleOut = MAKE_SWIZZLE4(newSwizzle[0],
- newSwizzle[1],
- newSwizzle[2],
- newSwizzle[3]);
-
- if (_slang_simple_writemask(mask, *swizzleOut)) {
- if (size >= 1)
- assert(GET_SWZ(*swizzleOut, 0) == SWIZZLE_X);
- if (size >= 2)
- assert(GET_SWZ(*swizzleOut, 1) == SWIZZLE_Y);
- if (size >= 3)
- assert(GET_SWZ(*swizzleOut, 2) == SWIZZLE_Z);
- if (size >= 4)
- assert(GET_SWZ(*swizzleOut, 3) == SWIZZLE_W);
- return GL_TRUE;
+ GLuint swz = GET_SWZ(swizzle, i);
+ size += (swz >= 0 && swz <= 3);
}
- else
- return GL_FALSE;
+ return size;
}
slang_ir_node *n = new_node1(IR_SWIZZLE, child);
assert(child);
if (n) {
- n->Store = _slang_new_ir_storage(PROGRAM_UNDEFINED, -1, -1);
+ assert(!n->Store);
+ n->Store = _slang_new_ir_storage_relative(0,
+ swizzle_size(swizzle),
+ child->Store);
n->Store->Swizzle = swizzle;
}
return n;
}
+static GLboolean
+is_store_writable(const slang_assemble_ctx *A, const slang_ir_storage *store)
+{
+ while (store->Parent)
+ store = store->Parent;
+
+ if (!(store->File == PROGRAM_OUTPUT ||
+ store->File == PROGRAM_TEMPORARY ||
+ (store->File == PROGRAM_VARYING &&
+ A->program->Target == GL_VERTEX_PROGRAM_ARB))) {
+ return GL_FALSE;
+ }
+ else {
+ return GL_TRUE;
+ }
+}
+
+
/**
* Generate IR tree for an assignment (=).
*/
if (oper->children[0].type == SLANG_OPER_IDENTIFIER) {
/* Check that var is writeable */
slang_variable *var
- = _slang_locate_variable(oper->children[0].locals,
+ = _slang_variable_locate(oper->children[0].locals,
oper->children[0].a_id, GL_TRUE);
if (!var) {
slang_info_log_error(A->log, "undefined variable '%s'",
}
if (var->type.qualifier == SLANG_QUAL_CONST ||
var->type.qualifier == SLANG_QUAL_ATTRIBUTE ||
- var->type.qualifier == SLANG_QUAL_UNIFORM) {
+ var->type.qualifier == SLANG_QUAL_UNIFORM ||
+ (var->type.qualifier == SLANG_QUAL_VARYING &&
+ A->program->Target == GL_FRAGMENT_PROGRAM_ARB)) {
slang_info_log_error(A->log,
"illegal assignment to read-only variable '%s'",
(char *) oper->children[0].a_id);
}
else {
slang_ir_node *n, *lhs, *rhs;
+
+ /* lhs and rhs type checking */
+ if (!_slang_assignment_compatible(A,
+ &oper->children[0],
+ &oper->children[1])) {
+ slang_info_log_error(A->log, "incompatible types in assignment");
+ return NULL;
+ }
+
lhs = _slang_gen_operation(A, &oper->children[0]);
+ if (!lhs) {
+ return NULL;
+ }
- if (lhs) {
- if (lhs->Store->File != PROGRAM_OUTPUT &&
- lhs->Store->File != PROGRAM_TEMPORARY &&
- lhs->Store->File != PROGRAM_VARYING &&
- lhs->Store->File != PROGRAM_UNDEFINED) {
- slang_info_log_error(A->log,
- "illegal assignment to read-only l-value");
- return NULL;
- }
+ if (!lhs->Store) {
+ slang_info_log_error(A->log,
+ "invalid left hand side for assignment");
+ return NULL;
+ }
+
+ /* check that lhs is writable */
+ if (!is_store_writable(A, lhs->Store)) {
+ slang_info_log_error(A->log,
+ "illegal assignment to read-only l-value");
+ return NULL;
}
rhs = _slang_gen_operation(A, &oper->children[1]);
if (lhs && rhs) {
/* convert lhs swizzle into writemask */
GLuint writemask, newSwizzle;
- if (!swizzle_to_writemask(lhs->Store->Swizzle,
+ if (!swizzle_to_writemask(A, lhs->Store->Swizzle,
&writemask, &newSwizzle)) {
/* Non-simple writemask, need to swizzle right hand side in
* order to put components into the right place.
*/
rhs = _slang_gen_swizzle(rhs, newSwizzle);
}
- n = new_node2(IR_MOVE, lhs, rhs);
- n->Writemask = writemask;
+ n = new_node2(IR_COPY, lhs, rhs);
return n;
}
else {
* Generate IR tree for referencing a field in a struct (or basic vector type)
*/
static slang_ir_node *
-_slang_gen_field(slang_assemble_ctx * A, slang_operation *oper)
+_slang_gen_struct_field(slang_assemble_ctx * A, slang_operation *oper)
{
slang_typeinfo ti;
/* type of struct */
slang_typeinfo_construct(&ti);
- _slang_typeof_operation(A, &oper->children[0], &ti);
+ typeof_operation(A, &oper->children[0], &ti);
if (_slang_type_is_vector(ti.spec.type)) {
/* the field should be a swizzle */
GLuint swizzle;
if (!_slang_is_swizzle((char *) oper->a_id, rows, &swz)) {
slang_info_log_error(A->log, "Bad swizzle");
+ return NULL;
}
swizzle = MAKE_SWIZZLE4(swz.swizzle[0],
swz.swizzle[1],
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
+ || ti.spec.type == SLANG_SPEC_BOOL) {
const GLuint rows = 1;
slang_swizzle swz;
slang_ir_node *n;
slang_ir_node *base, *n;
slang_typeinfo field_ti;
GLint fieldSize, fieldOffset = -1;
+
/* type of field */
slang_typeinfo_construct(&field_ti);
- _slang_typeof_operation(A, oper, &field_ti);
+ 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) {
+ const char *structName;
+ if (ti.spec._struct)
+ structName = (char *) ti.spec._struct->a_name;
+ else
+ structName = "unknown";
slang_info_log_error(A->log,
"\"%s\" is not a member of struct \"%s\"",
- (char *) oper->a_id,
- (char *) ti.spec._struct->a_name);
+ (char *) oper->a_id, structName);
return NULL;
}
assert(fieldSize >= 0);
}
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,
- fieldSize);
- }
- return n;
+ if (!n)
+ return NULL;
-#if 0
- _mesa_problem(NULL, "glsl structs/fields not supported yet");
- return NULL;
-#endif
+ n->Field = (char *) oper->a_id;
+
+ /* Store the field's offset in storage->Index */
+ n->Store = _slang_new_ir_storage(base->Store->File,
+ fieldOffset,
+ fieldSize);
+
+ return n;
}
}
* Gen code for array indexing.
*/
static slang_ir_node *
-_slang_gen_subscript(slang_assemble_ctx * A, slang_operation *oper)
+_slang_gen_array_element(slang_assemble_ctx * A, slang_operation *oper)
{
slang_typeinfo array_ti;
/* get array's type info */
slang_typeinfo_construct(&array_ti);
- _slang_typeof_operation(A, &oper->children[0], &array_ti);
+ typeof_operation(A, &oper->children[0], &array_ti);
if (_slang_type_is_vector(array_ti.spec.type)) {
/* indexing a simple vector type: "vec4 v; v[0]=p;" */
index = (GLint) oper->children[1].literal[0];
if (oper->children[1].type != SLANG_OPER_LITERAL_INT ||
- index >= max) {
+ index >= (GLint) max) {
slang_info_log_error(A->log, "Invalid array index for vector type");
return NULL;
}
SWIZZLE_NIL,
SWIZZLE_NIL);
n = _slang_gen_swizzle(n, swizzle);
- /*n->Store = _slang_clone_ir_storage_swz(n->Store, */
- n->Writemask = WRITEMASK_X << index;
}
+ assert(n->Store);
return n;
}
else {
/* size of array element */
slang_typeinfo_construct(&elem_ti);
- _slang_typeof_operation(A, oper, &elem_ti);
+ typeof_operation(A, oper, &elem_ti);
elemSize = _slang_sizeof_type_specifier(&elem_ti.spec);
if (_slang_type_is_matrix(array_ti.spec.type))
index = _slang_gen_operation(A, &oper->children[1]);
if (array && index) {
/* bounds check */
- if (index->Opcode == IR_FLOAT &&
- ((int) index->Value[0] < 0 ||
- (int) index->Value[0] >= arrayLen)) {
- slang_info_log_error(A->log,
+ GLint constIndex = -1;
+ if (index->Opcode == IR_FLOAT) {
+ constIndex = (int) index->Value[0];
+ if (constIndex < 0 || constIndex >= arrayLen) {
+ slang_info_log_error(A->log,
"Array index out of bounds (index=%d size=%d)",
- (int) index->Value[0], arrayLen);
- _slang_free_ir_tree(array);
- _slang_free_ir_tree(index);
+ constIndex, arrayLen);
+ _slang_free_ir_tree(array);
+ _slang_free_ir_tree(index);
+ return NULL;
+ }
+ }
+
+ if (!array->Store) {
+ slang_info_log_error(A->log, "Invalid array");
return NULL;
}
elem = new_node2(IR_ELEMENT, array, index);
+
+ /* The storage info here will be updated during code emit */
elem->Store = _slang_new_ir_storage(array->Store->File,
array->Store->Index,
elemSize);
- /* XXX try to do some array bounds checking here */
+
return elem;
}
else {
}
-/**
- * Look for expressions such as: gl_ModelviewMatrix * gl_Vertex
- * and replace with this: gl_Vertex * gl_ModelviewMatrixTranpose
- * Since matrices are stored in column-major order, the second form of
- * multiplication is much more efficient (just 4 dot products).
- */
+static slang_ir_node *
+_slang_gen_compare(slang_assemble_ctx *A, slang_operation *oper,
+ slang_ir_opcode opcode)
+{
+ slang_typeinfo t0, t1;
+ slang_ir_node *n;
+
+ slang_typeinfo_construct(&t0);
+ typeof_operation(A, &oper->children[0], &t0);
+
+ slang_typeinfo_construct(&t1);
+ typeof_operation(A, &oper->children[0], &t1);
+
+ if (t0.spec.type == SLANG_SPEC_ARRAY ||
+ t1.spec.type == SLANG_SPEC_ARRAY) {
+ slang_info_log_error(A->log, "Illegal array comparison");
+ return NULL;
+ }
+
+ if (oper->type != SLANG_OPER_EQUAL &&
+ oper->type != SLANG_OPER_NOTEQUAL) {
+ /* <, <=, >, >= can only be used with scalars */
+ if ((t0.spec.type != SLANG_SPEC_INT &&
+ t0.spec.type != SLANG_SPEC_FLOAT) ||
+ (t1.spec.type != SLANG_SPEC_INT &&
+ t1.spec.type != SLANG_SPEC_FLOAT)) {
+ slang_info_log_error(A->log, "Incompatible type(s) for inequality operator");
+ return NULL;
+ }
+ }
+
+ n = new_node2(opcode,
+ _slang_gen_operation(A, &oper->children[0]),
+ _slang_gen_operation(A, &oper->children[1]));
+
+ /* result is a bool (size 1) */
+ n->Store = _slang_new_ir_storage(PROGRAM_TEMPORARY, -1, 1);
+
+ return n;
+}
+
+
+#if 0
static void
-_slang_check_matmul_optimization(slang_assemble_ctx *A, slang_operation *oper)
-{
- static const struct {
- const char *orig;
- const char *tranpose;
- } matrices[] = {
- {"gl_ModelViewMatrix", "gl_ModelViewMatrixTranspose"},
- {"gl_ProjectionMatrix", "gl_ProjectionMatrixTranspose"},
- {"gl_ModelViewProjectionMatrix", "gl_ModelViewProjectionMatrixTranspose"},
- {"gl_TextureMatrix", "gl_TextureMatrixTranspose"},
- {"gl_NormalMatrix", "__NormalMatrixTranspose"},
- { NULL, NULL }
- };
+print_vars(slang_variable_scope *s)
+{
+ int i;
+ printf("vars: ");
+ for (i = 0; i < s->num_variables; i++) {
+ printf("%s %d, \n",
+ (char*) s->variables[i]->a_name,
+ s->variables[i]->declared);
+ }
- assert(oper->type == SLANG_OPER_MULTIPLY);
- if (oper->children[0].type == SLANG_OPER_IDENTIFIER) {
- GLuint i;
- for (i = 0; matrices[i].orig; i++) {
- if (oper->children[0].a_id
- == slang_atom_pool_atom(A->atoms, matrices[i].orig)) {
- /*
- _mesa_printf("Replace %s with %s\n",
- matrices[i].orig, matrices[i].tranpose);
- */
- assert(oper->children[0].type == SLANG_OPER_IDENTIFIER);
- oper->children[0].a_id
- = slang_atom_pool_atom(A->atoms, matrices[i].tranpose);
- /* finally, swap the operands */
- _slang_operation_swap(&oper->children[0], &oper->children[1]);
- return;
- }
+ printf("\n");
+}
+#endif
+
+
+#if 0
+static void
+_slang_undeclare_vars(slang_variable_scope *locals)
+{
+ if (locals->num_variables > 0) {
+ int i;
+ for (i = 0; i < locals->num_variables; i++) {
+ slang_variable *v = locals->variables[i];
+ printf("undeclare %s at %p\n", (char*) v->a_name, v);
+ v->declared = GL_FALSE;
}
}
}
+#endif
/**
_slang_pop_var_table(A->vartable);
+ /*_slang_undeclare_vars(oper->locals);*/
+ /*print_vars(oper->locals);*/
+
if (n)
n = new_node1(IR_SCOPE, n);
return n;
_slang_free_ir_tree(tree);
return NULL; /* error must have occured */
}
- tree = tree ? new_seq(tree, n) : n;
+ tree = new_seq(tree, n);
}
-#if 00
- if (oper->locals->num_variables > 0) {
- int i;
- /*
- printf("\n****** Deallocate vars in scope!\n");
- */
- for (i = 0; i < oper->locals->num_variables; i++) {
- slang_variable *v = oper->locals->variables + i;
- if (v->aux) {
- slang_ir_storage *store = (slang_ir_storage *) v->aux;
- /*
- printf(" Deallocate var %s\n", (char*) v->a_name);
- */
- assert(store->File == PROGRAM_TEMPORARY);
- assert(store->Index >= 0);
- _slang_free_temp(A->vartable, store->Index, store->Size);
- }
- }
- }
-#endif
return tree;
}
else {
return new_node0(IR_KILL);
case SLANG_OPER_EQUAL:
- return new_node2(IR_EQUAL,
- _slang_gen_operation(A, &oper->children[0]),
- _slang_gen_operation(A, &oper->children[1]));
+ return _slang_gen_compare(A, oper, IR_EQUAL);
case SLANG_OPER_NOTEQUAL:
- return new_node2(IR_NOTEQUAL,
- _slang_gen_operation(A, &oper->children[0]),
- _slang_gen_operation(A, &oper->children[1]));
+ return _slang_gen_compare(A, oper, IR_NOTEQUAL);
case SLANG_OPER_GREATER:
- return new_node2(IR_SGT,
- _slang_gen_operation(A, &oper->children[0]),
- _slang_gen_operation(A, &oper->children[1]));
+ return _slang_gen_compare(A, oper, IR_SGT);
case SLANG_OPER_LESS:
- return new_node2(IR_SLT,
- _slang_gen_operation(A, &oper->children[0]),
- _slang_gen_operation(A, &oper->children[1]));
+ return _slang_gen_compare(A, oper, IR_SLT);
case SLANG_OPER_GREATEREQUAL:
- return new_node2(IR_SGE,
- _slang_gen_operation(A, &oper->children[0]),
- _slang_gen_operation(A, &oper->children[1]));
+ return _slang_gen_compare(A, oper, IR_SGE);
case SLANG_OPER_LESSEQUAL:
- return new_node2(IR_SLE,
- _slang_gen_operation(A, &oper->children[0]),
- _slang_gen_operation(A, &oper->children[1]));
+ return _slang_gen_compare(A, oper, IR_SLE);
case SLANG_OPER_ADD:
{
slang_ir_node *n;
{
slang_ir_node *n;
assert(oper->num_children == 2);
- _slang_check_matmul_optimization(A, oper);
n = _slang_gen_function_call_name(A, "*", oper, NULL);
return n;
}
{
slang_ir_node *n;
assert(oper->num_children == 2);
- n = _slang_gen_function_call_name(A, "+=", oper, &oper->children[0]);
+ n = _slang_gen_function_call_name(A, "+=", oper, NULL);
return n;
}
case SLANG_OPER_SUBASSIGN:
{
slang_ir_node *n;
assert(oper->num_children == 2);
- n = _slang_gen_function_call_name(A, "-=", oper, &oper->children[0]);
+ n = _slang_gen_function_call_name(A, "-=", oper, NULL);
return n;
}
break;
{
slang_ir_node *n;
assert(oper->num_children == 2);
- n = _slang_gen_function_call_name(A, "*=", oper, &oper->children[0]);
+ n = _slang_gen_function_call_name(A, "*=", oper, NULL);
return n;
}
case SLANG_OPER_DIVASSIGN:
{
slang_ir_node *n;
assert(oper->num_children == 2);
- n = _slang_gen_function_call_name(A, "/=", oper, &oper->children[0]);
+ n = _slang_gen_function_call_name(A, "/=", oper, NULL);
return n;
}
case SLANG_OPER_LOGICALAND:
case SLANG_OPER_CALL:
return _slang_gen_function_call_name(A, (const char *) oper->a_id,
oper, NULL);
+ case SLANG_OPER_METHOD:
+ return _slang_gen_method_call(A, oper);
case SLANG_OPER_RETURN:
return _slang_gen_return(A, oper);
case SLANG_OPER_LABEL:
case SLANG_OPER_IF:
return _slang_gen_if(A, oper);
case SLANG_OPER_FIELD:
- return _slang_gen_field(A, oper);
+ return _slang_gen_struct_field(A, oper);
case SLANG_OPER_SUBSCRIPT:
- return _slang_gen_subscript(A, oper);
+ return _slang_gen_array_element(A, oper);
case SLANG_OPER_LITERAL_FLOAT:
/* fall-through */
case SLANG_OPER_LITERAL_INT:
return n;
}
- case SLANG_OPER_INLINED_CALL:
+ case SLANG_OPER_NON_INLINED_CALL:
case SLANG_OPER_SEQUENCE:
{
slang_ir_node *tree = NULL;
GLuint i;
for (i = 0; i < oper->num_children; i++) {
slang_ir_node *n = _slang_gen_operation(A, &oper->children[i]);
- tree = tree ? new_seq(tree, n) : n;
+ tree = new_seq(tree, n);
+ if (n)
+ tree->Store = n->Store;
}
- if (oper->type == SLANG_OPER_INLINED_CALL) {
- tree = new_inlined_function_call(tree, oper->label);
+ if (oper->type == SLANG_OPER_NON_INLINED_CALL) {
+ tree = new_function_call(tree, oper->label);
}
return tree;
}
}
+/**
+ * Compute total size of array give size of element, number of elements.
+ */
+static GLint
+array_size(GLint baseSize, GLint arrayLen)
+{
+ GLint total;
+ if (arrayLen > 1) {
+ /* round up base type to multiple of 4 */
+ total = ((baseSize + 3) & ~0x3) * MAX2(arrayLen, 1);
+ }
+ else {
+ total = baseSize;
+ }
+ return total;
+}
+
/**
* Called by compiler when a global variable has been parsed/compiled.
int dbg = 0;
const GLenum datatype = _slang_gltype_from_specifier(&var->type.specifier);
const GLint texIndex = sampler_to_texture_index(var->type.specifier.type);
+ const GLint size = _slang_sizeof_type_specifier(&var->type.specifier);
if (texIndex != -1) {
- /* Texture sampler:
+ /* This is a texture sampler variable...
* store->File = PROGRAM_SAMPLER
- * store->Index = sampler uniform location
+ * store->Index = sampler number (0..7, typically)
* store->Size = texture type index (1D, 2D, 3D, cube, etc)
*/
- GLint samplerUniform
- = _mesa_add_sampler(prog->Parameters, varName, datatype);
- store = _slang_new_ir_storage(PROGRAM_SAMPLER, samplerUniform, texIndex);
+ if (var->initializer) {
+ slang_info_log_error(A->log, "illegal assignment to '%s'", varName);
+ return GL_FALSE;
+ }
+#if FEATURE_es2_glsl /* XXX should use FEATURE_texture_rect */
+ /* disallow rect samplers */
+ if (var->type.specifier.type == SLANG_SPEC_SAMPLER2DRECT ||
+ var->type.specifier.type == SLANG_SPEC_SAMPLER2DRECTSHADOW) {
+ slang_info_log_error(A->log, "invalid sampler type for '%s'", varName);
+ return GL_FALSE;
+ }
+#endif
+ {
+ GLint sampNum = _mesa_add_sampler(prog->Parameters, varName, datatype);
+ store = _slang_new_ir_storage(PROGRAM_SAMPLER, sampNum, texIndex);
+ }
if (dbg) printf("SAMPLER ");
}
else if (var->type.qualifier == SLANG_QUAL_UNIFORM) {
/* Uniform variable */
- const GLint size = _slang_sizeof_type_specifier(&var->type.specifier)
- * MAX2(var->array_len, 1);
+ const GLint totalSize = array_size(size, var->array_len);
+ const GLuint swizzle = _slang_var_swizzle(totalSize, 0);
+
if (prog) {
/* user-defined uniform */
if (datatype == GL_NONE) {
if (var->type.specifier.type == SLANG_SPEC_STRUCT) {
- _mesa_problem(NULL, "user-declared uniform structs not supported yet");
+ /* temporary work-around */
+ GLenum datatype = GL_FLOAT;
+ GLint uniformLoc = _mesa_add_uniform(prog->Parameters, varName,
+ totalSize, datatype, NULL);
+ store = _slang_new_ir_storage_swz(PROGRAM_UNIFORM, uniformLoc,
+ totalSize, swizzle);
+
/* XXX what we need to do is unroll the struct into its
* basic types, creating a uniform variable for each.
* For example:
* "f.a" (GL_FLOAT_VEC3)
* "f.b" (GL_FLOAT_VEC4)
*/
+
+ if (var->initializer) {
+ slang_info_log_error(A->log,
+ "unsupported initializer for uniform '%s'", varName);
+ return GL_FALSE;
+ }
}
else {
slang_info_log_error(A->log,
"invalid datatype for uniform variable %s",
- (char *) var->a_name);
+ varName);
+ return GL_FALSE;
}
- return GL_FALSE;
}
else {
- GLint uniformLoc = _mesa_add_uniform(prog->Parameters, varName,
- size, datatype);
- store = _slang_new_ir_storage(PROGRAM_UNIFORM, uniformLoc, size);
+ GLint uniformLoc;
+ const GLfloat *initialValues = NULL;
+ if (var->initializer) {
+ _slang_simplify(var->initializer, &A->space, A->atoms);
+ if (var->initializer->type == SLANG_OPER_LITERAL_FLOAT ||
+ var->initializer->type == SLANG_OPER_LITERAL_INT) {
+ /* simple float/vector initializer */
+ initialValues = var->initializer->literal;
+ }
+ else {
+ /* complex initializer */
+ slang_info_log_error(A->log,
+ "unsupported initializer for uniform '%s'", varName);
+ return GL_FALSE;
+ }
+ }
+
+ uniformLoc = _mesa_add_uniform(prog->Parameters, varName,
+ totalSize, datatype, initialValues);
+ store = _slang_new_ir_storage_swz(PROGRAM_UNIFORM, uniformLoc,
+ totalSize, swizzle);
}
}
else {
/* We know it's a uniform, but don't allocate storage unless
* it's really used.
*/
- store = _slang_new_ir_storage(PROGRAM_STATE_VAR, -1, size);
+ store = _slang_new_ir_storage_swz(PROGRAM_STATE_VAR, -1,
+ totalSize, swizzle);
}
- if (dbg) printf("UNIFORM (sz %d) ", size);
+ if (dbg) printf("UNIFORM (sz %d) ", totalSize);
}
else if (var->type.qualifier == SLANG_QUAL_VARYING) {
- const GLint size = 4; /* XXX fix */
+ const GLint totalSize = array_size(size, var->array_len);
+
+ /* varyings must be float, vec or mat */
+ if (!_slang_type_is_float_vec_mat(var->type.specifier.type) &&
+ var->type.specifier.type != SLANG_SPEC_ARRAY) {
+ slang_info_log_error(A->log,
+ "varying '%s' must be float/vector/matrix",
+ varName);
+ return GL_FALSE;
+ }
+
+ if (var->initializer) {
+ slang_info_log_error(A->log, "illegal initializer for varying '%s'",
+ varName);
+ return GL_FALSE;
+ }
+
if (prog) {
/* user-defined varying */
- GLint varyingLoc = _mesa_add_varying(prog->Varying, varName, size);
- store = _slang_new_ir_storage(PROGRAM_VARYING, varyingLoc, size);
+ GLbitfield flags;
+ GLint varyingLoc;
+ GLuint swizzle;
+
+ flags = 0x0;
+ if (var->type.centroid == SLANG_CENTROID)
+ flags |= PROG_PARAM_BIT_CENTROID;
+ if (var->type.variant == SLANG_INVARIANT)
+ flags |= PROG_PARAM_BIT_INVARIANT;
+
+ varyingLoc = _mesa_add_varying(prog->Varying, varName,
+ totalSize, flags);
+ swizzle = _slang_var_swizzle(size, 0);
+ store = _slang_new_ir_storage_swz(PROGRAM_VARYING, varyingLoc,
+ totalSize, swizzle);
}
else {
/* pre-defined varying, like gl_Color or gl_TexCoord */
if (type == SLANG_UNIT_FRAGMENT_BUILTIN) {
+ /* fragment program input */
GLuint swizzle;
GLint index = _slang_input_index(varName, GL_FRAGMENT_PROGRAM_ARB,
&swizzle);
assert(index >= 0);
- store = _slang_new_ir_storage(PROGRAM_INPUT, index, size);
- store->Swizzle = swizzle;
assert(index < FRAG_ATTRIB_MAX);
+ store = _slang_new_ir_storage_swz(PROGRAM_INPUT, index,
+ size, swizzle);
}
else {
+ /* vertex program output */
GLint index = _slang_output_index(varName, GL_VERTEX_PROGRAM_ARB);
+ GLuint swizzle = _slang_var_swizzle(size, 0);
assert(index >= 0);
- assert(type == SLANG_UNIT_VERTEX_BUILTIN);
- store = _slang_new_ir_storage(PROGRAM_OUTPUT, index, size);
assert(index < VERT_RESULT_MAX);
+ assert(type == SLANG_UNIT_VERTEX_BUILTIN);
+ store = _slang_new_ir_storage_swz(PROGRAM_OUTPUT, index,
+ size, swizzle);
}
if (dbg) printf("V/F ");
}
if (dbg) printf("VARYING ");
}
else if (var->type.qualifier == SLANG_QUAL_ATTRIBUTE) {
+ GLuint swizzle;
+ GLint index;
+ /* attributes must be float, vec or mat */
+ if (!_slang_type_is_float_vec_mat(var->type.specifier.type)) {
+ slang_info_log_error(A->log,
+ "attribute '%s' must be float/vector/matrix",
+ varName);
+ return GL_FALSE;
+ }
+
if (prog) {
/* user-defined vertex attribute */
- const GLint size = _slang_sizeof_type_specifier(&var->type.specifier);
const GLint attr = -1; /* unknown */
- GLint index = _mesa_add_attribute(prog->Attributes, varName,
- size, attr);
+ swizzle = _slang_var_swizzle(size, 0);
+ index = _mesa_add_attribute(prog->Attributes, varName,
+ size, datatype, attr);
assert(index >= 0);
- store = _slang_new_ir_storage(PROGRAM_INPUT,
- VERT_ATTRIB_GENERIC0 + index, size);
+ index = VERT_ATTRIB_GENERIC0 + index;
}
else {
/* pre-defined vertex attrib */
- GLuint swizzle;
- GLint index = _slang_input_index(varName, GL_VERTEX_PROGRAM_ARB,
- &swizzle);
- GLint size = 4; /* XXX? */
+ index = _slang_input_index(varName, GL_VERTEX_PROGRAM_ARB, &swizzle);
assert(index >= 0);
- store = _slang_new_ir_storage(PROGRAM_INPUT, index, size);
- store->Swizzle = swizzle;
}
+ store = _slang_new_ir_storage_swz(PROGRAM_INPUT, index, size, swizzle);
if (dbg) printf("ATTRIB ");
}
else if (var->type.qualifier == SLANG_QUAL_FIXEDINPUT) {
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_INPUT, index, size);
- store->Swizzle = swizzle;
+ store = _slang_new_ir_storage_swz(PROGRAM_INPUT, index, size, swizzle);
if (dbg) printf("INPUT ");
}
else if (var->type.qualifier == SLANG_QUAL_FIXEDOUTPUT) {
if (type == SLANG_UNIT_VERTEX_BUILTIN) {
GLint index = _slang_output_index(varName, GL_VERTEX_PROGRAM_ARB);
- GLint size = 4; /* XXX? */
store = _slang_new_ir_storage(PROGRAM_OUTPUT, index, size);
}
else {
GLint index = _slang_output_index(varName, GL_FRAGMENT_PROGRAM_ARB);
- GLint size = 4; /* XXX? */
+ GLint specialSize = 4; /* treat all fragment outputs as float[4] */
assert(type == SLANG_UNIT_FRAGMENT_BUILTIN);
- store = _slang_new_ir_storage(PROGRAM_OUTPUT, index, size);
+ store = _slang_new_ir_storage(PROGRAM_OUTPUT, index, specialSize);
}
if (dbg) printf("OUTPUT ");
}
else if (var->type.qualifier == SLANG_QUAL_CONST && !prog) {
/* pre-defined global constant, like gl_MaxLights */
- const GLint size = _slang_sizeof_type_specifier(&var->type.specifier);
store = _slang_new_ir_storage(PROGRAM_CONSTANT, -1, size);
if (dbg) printf("CONST ");
}
slang_ir_node *n;
/* IR node to declare the variable */
- n = _slang_gen_var_decl(A, var);
-
- /* IR code for the var's initializer, if present */
- if (var->initializer) {
- slang_ir_node *lhs, *rhs, *init;
-
- /* Generate IR_MOVE instruction to initialize the variable */
- lhs = new_node0(IR_VAR);
- lhs->Var = var;
- lhs->Store = n->Store;
-
- /* constant folding, etc */
- _slang_simplify(var->initializer, &A->space, A->atoms);
-
- rhs = _slang_gen_operation(A, var->initializer);
- assert(rhs);
- init = new_node2(IR_MOVE, lhs, rhs);
- n = new_seq(n, init);
- }
+ n = _slang_gen_var_decl(A, var, var->initializer);
+ /* emit GPU instructions */
success = _slang_emit_code(n, A->vartable, A->program, GL_FALSE, A->log);
_slang_free_ir_tree(n);
store ? store->Index : -2);
if (store)
- var->aux = store; /* save var's storage info */
+ var->store = store; /* save var's storage info */
+
+ var->declared = GL_TRUE;
return success;
}
if (_mesa_strcmp((char *) fun->header.a_name, "main") != 0) {
/* we only really generate code for main, all other functions get
- * inlined.
+ * inlined or codegen'd upon an actual call.
*/
#if 0
/* do some basic error checking though */
projects / mesa.git / blobdiff