[gtk+/wip/otte/shader: 16/176] gskslnode: Add comparison and shift operators
- From: Benjamin Otte <otte src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [gtk+/wip/otte/shader: 16/176] gskslnode: Add comparison and shift operators
- Date: Wed, 25 Oct 2017 03:18:04 +0000 (UTC)
commit 94bbe66dec1902a6969f8f6363a69cd1c159ee65
Author: Benjamin Otte <otte redhat com>
Date: Sun Sep 17 17:45:34 2017 +0200
gskslnode: Add comparison and shift operators
gsk/gskslnode.c | 535 +++++++++++++++++++++++++++++++++++++++++++++++-
gsk/gsksltype.c | 84 ++++++---
gsk/gsksltypeprivate.h | 3 +
3 files changed, 586 insertions(+), 36 deletions(-)
---
diff --git a/gsk/gskslnode.c b/gsk/gskslnode.c
index 27461ef..7eb8384 100644
--- a/gsk/gskslnode.c
+++ b/gsk/gskslnode.c
@@ -350,6 +350,174 @@ gsk_sl_node_operation_print (GskSlNode *node,
}
static GskSlType *
+gsk_sl_node_arithmetic_type_check (GskSlPreprocessor *stream,
+ gboolean multiply,
+ GskSlType *ltype,
+ GskSlType *rtype)
+{
+ GskSlScalarType scalar;
+
+ if (gsk_sl_scalar_type_can_convert (gsk_sl_type_get_scalar_type (ltype),
+ gsk_sl_type_get_scalar_type (rtype)))
+ scalar = gsk_sl_type_get_scalar_type (ltype);
+ else if (gsk_sl_scalar_type_can_convert (gsk_sl_type_get_scalar_type (rtype),
+ gsk_sl_type_get_scalar_type (ltype)))
+ scalar = gsk_sl_type_get_scalar_type (rtype);
+ else
+ {
+ if (stream)
+ {
+ char *lstr = gsk_sl_type_to_string (ltype);
+ char *rstr = gsk_sl_type_to_string (rtype);
+ gsk_sl_preprocessor_error (stream, "Operand types %s and %s do not share compatible scalar
types.", lstr, rstr);
+ g_free (lstr);
+ g_free (rstr);
+ }
+ return NULL;
+ }
+
+ if (gsk_sl_type_is_matrix (ltype))
+ {
+ if (gsk_sl_type_is_matrix (rtype))
+ {
+ if (multiply)
+ {
+ if (gsk_sl_type_get_length (ltype) != gsk_sl_type_get_length (gsk_sl_type_get_index_type
(rtype)))
+ {
+ if (stream)
+ gsk_sl_preprocessor_error (stream, "Matrices to multiplication have incompatible
dimensions.");
+ return NULL;
+ }
+ return gsk_sl_type_get_matrix (scalar,
+ gsk_sl_type_get_length (gsk_sl_type_get_index_type (ltype)),
+ gsk_sl_type_get_length (rtype));
+ }
+ else
+ {
+ if (gsk_sl_type_can_convert (ltype, rtype))
+ {
+ return ltype;
+ }
+ else if (gsk_sl_type_can_convert (rtype, ltype))
+ {
+ return rtype;
+ }
+ else
+ {
+ if (stream)
+ gsk_sl_preprocessor_error (stream, "Matrices to arithmetic operation have different
size.");
+ return NULL;
+ }
+ }
+ }
+ else if (gsk_sl_type_is_vector (rtype))
+ {
+ if (multiply)
+ {
+ if (gsk_sl_type_get_length (ltype) != gsk_sl_type_get_length (rtype))
+ {
+ if (stream)
+ gsk_sl_preprocessor_error (stream, "Matrix column count doesn't match vector length.");
+ return NULL;
+ }
+ return gsk_sl_type_get_vector (scalar, gsk_sl_type_get_length (gsk_sl_type_get_index_type
(ltype)));
+ }
+ else
+ {
+ if (stream)
+ gsk_sl_preprocessor_error (stream, "Cannot perform arithmetic operation between matrix and
vector.");
+ return NULL;
+ }
+ }
+ else if (gsk_sl_type_is_scalar (rtype))
+ {
+ return gsk_sl_type_get_matrix (scalar,
+ gsk_sl_type_get_length (ltype),
+ gsk_sl_type_get_length (gsk_sl_type_get_index_type (ltype)));
+ }
+ else
+ {
+ if (stream)
+ gsk_sl_preprocessor_error (stream, "Right operand is incompatible type for arithemtic
operation.");
+ return NULL;
+ }
+ }
+ else if (gsk_sl_type_is_vector (ltype))
+ {
+ if (gsk_sl_type_is_matrix (rtype))
+ {
+ if (multiply)
+ {
+ if (gsk_sl_type_get_length (ltype) != gsk_sl_type_get_length (gsk_sl_type_get_index_type
(rtype)))
+ {
+ if (stream)
+ gsk_sl_preprocessor_error (stream, "Vector length doesn't match matrix row count.");
+ return NULL;
+ }
+ return gsk_sl_type_get_vector (scalar, gsk_sl_type_get_length (rtype));
+ }
+ else
+ {
+ if (stream)
+ gsk_sl_preprocessor_error (stream, "Cannot perform arithmetic operation between vector and
matrix.");
+ return NULL;
+ }
+ }
+ else if (gsk_sl_type_is_vector (rtype))
+ {
+ if (gsk_sl_type_get_length (ltype) != gsk_sl_type_get_length (rtype))
+ {
+ if (stream)
+ gsk_sl_preprocessor_error (stream, "Vector operands to arithmetic operation have different
length.");
+ return NULL;
+ }
+ return gsk_sl_type_get_vector (scalar, gsk_sl_type_get_length (ltype));
+ }
+ else if (gsk_sl_type_is_scalar (rtype))
+ {
+ return gsk_sl_type_get_vector (scalar,
+ gsk_sl_type_get_length (ltype));
+ }
+ else
+ {
+ if (stream)
+ gsk_sl_preprocessor_error (stream, "Right operand is incompatible type for arithemtic
operation.");
+ return NULL;
+ }
+ }
+ else if (gsk_sl_type_is_scalar (ltype))
+ {
+ if (gsk_sl_type_is_matrix (rtype))
+ {
+ return gsk_sl_type_get_matrix (scalar,
+ gsk_sl_type_get_length (rtype),
+ gsk_sl_type_get_length (gsk_sl_type_get_index_type (rtype)));
+ }
+ else if (gsk_sl_type_is_vector (rtype))
+ {
+ return gsk_sl_type_get_vector (scalar,
+ gsk_sl_type_get_length (rtype));
+ }
+ else if (gsk_sl_type_is_scalar (rtype))
+ {
+ return gsk_sl_type_get_scalar (scalar);
+ }
+ else
+ {
+ if (stream)
+ gsk_sl_preprocessor_error (stream, "Right operand is incompatible type for arithemtic
operation.");
+ return NULL;
+ }
+ }
+ else
+ {
+ if (stream)
+ gsk_sl_preprocessor_error (stream, "Left operand is incompatible type for arithemtic operation.");
+ return NULL;
+ }
+}
+
+static GskSlType *
gsk_sl_node_bitwise_type_check (GskSlPreprocessor *stream,
GskSlType *ltype,
GskSlType *rtype)
@@ -397,6 +565,90 @@ gsk_sl_node_bitwise_type_check (GskSlPreprocessor *stream,
return gsk_sl_type_get_vector (rscalar, gsk_sl_type_get_length (ltype));
}
+static gboolean
+gsk_sl_node_shift_type_check (GskSlPreprocessor *stream,
+ GskSlType *ltype,
+ GskSlType *rtype)
+{
+ GskSlScalarType lscalar, rscalar;
+
+ lscalar = gsk_sl_type_get_scalar_type (ltype);
+ if (lscalar != GSK_SL_INT && lscalar != GSK_SL_UINT)
+ {
+ if (stream)
+ gsk_sl_preprocessor_error (stream, "Left operand is not an integer type.");
+ return FALSE;
+ }
+ rscalar = gsk_sl_type_get_scalar_type (ltype);
+ if (rscalar != GSK_SL_INT && rscalar != GSK_SL_UINT)
+ {
+ if (stream)
+ gsk_sl_preprocessor_error (stream, "Right operand is not an integer type.");
+ return FALSE;
+ }
+ if (!gsk_sl_type_is_scalar (ltype) && !gsk_sl_type_is_vector (ltype))
+ {
+ if (stream)
+ gsk_sl_preprocessor_error (stream, "Left operand is neither a scalar nor a vector.");
+ return FALSE;
+ }
+ if (!gsk_sl_type_is_scalar (rtype) && !gsk_sl_type_is_vector (rtype))
+ {
+ if (stream)
+ gsk_sl_preprocessor_error (stream, "Right operand is neither a scalar nor a vector.");
+ return FALSE;
+ }
+ if (gsk_sl_type_is_scalar (ltype) && gsk_sl_type_is_vector (rtype))
+ {
+ if (stream)
+ gsk_sl_preprocessor_error (stream, "Right operand to shift cannot be a vector if left operand is a
scalar.");
+ return FALSE;
+ }
+ if (gsk_sl_type_is_vector (ltype) && gsk_sl_type_is_vector (rtype) &&
+ gsk_sl_type_get_length (ltype) != gsk_sl_type_get_length (rtype))
+ {
+ if (stream)
+ gsk_sl_preprocessor_error (stream, "Vector operands do not have the same length.");
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+static gboolean
+gsk_sl_node_relational_type_check (GskSlPreprocessor *stream,
+ GskSlType *ltype,
+ GskSlType *rtype)
+{
+ if (!gsk_sl_type_is_scalar (ltype))
+ {
+ if (stream)
+ gsk_sl_preprocessor_error (stream, "Left operand to relational operator is not a scalar.");
+ return FALSE;
+ }
+ if (gsk_sl_type_get_scalar_type (ltype) == GSK_SL_BOOL)
+ {
+ if (stream)
+ gsk_sl_preprocessor_error (stream, "Left operand to relational operator must not be bool.");
+ return FALSE;
+ }
+ if (!gsk_sl_type_is_scalar (rtype))
+ {
+ if (stream)
+ gsk_sl_preprocessor_error (stream, "Right operand to relational operator is not a scalar.");
+ return FALSE;
+ }
+ if (gsk_sl_type_get_scalar_type (rtype) == GSK_SL_BOOL)
+ {
+ if (stream)
+ gsk_sl_preprocessor_error (stream, "Right operand to relational operator must not be bool.");
+ return FALSE;
+ }
+
+
+ return TRUE;
+}
+
static GskSlType *
gsk_sl_node_operation_get_return_type (GskSlNode *node)
{
@@ -405,26 +657,33 @@ gsk_sl_node_operation_get_return_type (GskSlNode *node)
switch (operation->op)
{
case GSK_SL_OPERATION_MUL:
+ return gsk_sl_node_arithmetic_type_check (NULL,
+ TRUE,
+ gsk_sl_node_get_return_type (operation->left),
+ gsk_sl_node_get_return_type (operation->right));
case GSK_SL_OPERATION_DIV:
- case GSK_SL_OPERATION_MOD:
case GSK_SL_OPERATION_ADD:
case GSK_SL_OPERATION_SUB:
+ return gsk_sl_node_arithmetic_type_check (NULL,
+ FALSE,
+ gsk_sl_node_get_return_type (operation->left),
+ gsk_sl_node_get_return_type (operation->right));
case GSK_SL_OPERATION_LSHIFT:
case GSK_SL_OPERATION_RSHIFT:
- case GSK_SL_OPERATION_LESS:
- case GSK_SL_OPERATION_GREATER:
- case GSK_SL_OPERATION_LESS_EQUAL:
- case GSK_SL_OPERATION_GREATER_EQUAL:
- case GSK_SL_OPERATION_EQUAL:
- case GSK_SL_OPERATION_NOT_EQUAL:
- g_assert_not_reached ();
- return NULL;
+ return gsk_sl_node_get_return_type (operation->left);
+ case GSK_SL_OPERATION_MOD:
case GSK_SL_OPERATION_AND:
case GSK_SL_OPERATION_XOR:
case GSK_SL_OPERATION_OR:
return gsk_sl_node_bitwise_type_check (NULL,
gsk_sl_node_get_return_type (operation->left),
gsk_sl_node_get_return_type (operation->right));
+ case GSK_SL_OPERATION_LESS:
+ case GSK_SL_OPERATION_GREATER:
+ case GSK_SL_OPERATION_LESS_EQUAL:
+ case GSK_SL_OPERATION_GREATER_EQUAL:
+ case GSK_SL_OPERATION_EQUAL:
+ case GSK_SL_OPERATION_NOT_EQUAL:
case GSK_SL_OPERATION_LOGICAL_AND:
case GSK_SL_OPERATION_LOGICAL_XOR:
case GSK_SL_OPERATION_LOGICAL_OR:
@@ -784,11 +1043,267 @@ gsk_sl_node_parse_primary_expression (GskSlNodeProgram *program,
}
static GskSlNode *
+gsk_sl_node_parse_unary_expression (GskSlNodeProgram *program,
+ GskSlScope *scope,
+ GskSlPreprocessor *stream)
+{
+ return gsk_sl_node_parse_primary_expression (program, scope, stream);
+}
+
+static GskSlNode *
+gsk_sl_node_parse_multiplicative_expression (GskSlNodeProgram *program,
+ GskSlScope *scope,
+ GskSlPreprocessor *stream)
+{
+ const GskSlToken *token;
+ GskSlNode *node;
+ GskSlNodeOperation *operation;
+ GskSlOperation op;
+
+ node = gsk_sl_node_parse_unary_expression (program, scope, stream);
+ if (node == NULL)
+ return NULL;
+
+ while (TRUE)
+ {
+ token = gsk_sl_preprocessor_get (stream);
+ if (gsk_sl_token_is (token, GSK_SL_TOKEN_STAR))
+ op = GSK_SL_OPERATION_MUL;
+ else if (gsk_sl_token_is (token, GSK_SL_TOKEN_SLASH))
+ op = GSK_SL_OPERATION_DIV;
+ else if (gsk_sl_token_is (token, GSK_SL_TOKEN_PERCENT))
+ op = GSK_SL_OPERATION_MOD;
+ else
+ return node;
+
+ operation = gsk_sl_node_new (GskSlNodeOperation, &GSK_SL_NODE_OPERATION);
+ operation->left = node;
+ operation->op = op;
+ gsk_sl_preprocessor_consume (stream, (GskSlNode *) operation);
+ operation->right = gsk_sl_node_parse_unary_expression (program, scope, stream);
+ if (operation->right == NULL)
+ {
+ gsk_sl_node_ref (node);
+ gsk_sl_node_unref ((GskSlNode *) operation);
+ }
+ else if ((op == GSK_SL_OPERATION_MOD &&
+ !gsk_sl_node_bitwise_type_check (stream,
+ gsk_sl_node_get_return_type (operation->left),
+ gsk_sl_node_get_return_type (operation->right))) ||
+ (op != GSK_SL_OPERATION_MOD &&
+ !gsk_sl_node_arithmetic_type_check (stream,
+ FALSE,
+ gsk_sl_node_get_return_type (operation->left),
+ gsk_sl_node_get_return_type (operation->right))))
+ {
+ gsk_sl_node_ref (node);
+ gsk_sl_node_unref ((GskSlNode *) operation);
+ }
+ else
+ {
+ node = (GskSlNode *) operation;
+ }
+ }
+
+ return node;
+}
+
+static GskSlNode *
+gsk_sl_node_parse_additive_expression (GskSlNodeProgram *program,
+ GskSlScope *scope,
+ GskSlPreprocessor *stream)
+{
+ const GskSlToken *token;
+ GskSlNode *node;
+ GskSlNodeOperation *operation;
+ GskSlOperation op;
+
+ node = gsk_sl_node_parse_multiplicative_expression (program, scope, stream);
+ if (node == NULL)
+ return NULL;
+
+ while (TRUE)
+ {
+ token = gsk_sl_preprocessor_get (stream);
+ if (gsk_sl_token_is (token, GSK_SL_TOKEN_PLUS))
+ op = GSK_SL_OPERATION_ADD;
+ else if (gsk_sl_token_is (token, GSK_SL_TOKEN_DASH))
+ op = GSK_SL_OPERATION_SUB;
+ else
+ return node;
+
+ operation = gsk_sl_node_new (GskSlNodeOperation, &GSK_SL_NODE_OPERATION);
+ operation->left = node;
+ operation->op = op;
+ gsk_sl_preprocessor_consume (stream, (GskSlNode *) operation);
+ operation->right = gsk_sl_node_parse_additive_expression (program, scope, stream);
+ if (operation->right == NULL)
+ {
+ gsk_sl_node_ref (node);
+ gsk_sl_node_unref ((GskSlNode *) operation);
+ }
+ else if (!gsk_sl_node_arithmetic_type_check (stream,
+ FALSE,
+ gsk_sl_node_get_return_type (operation->left),
+ gsk_sl_node_get_return_type (operation->right)))
+ {
+ gsk_sl_node_ref (node);
+ gsk_sl_node_unref ((GskSlNode *) operation);
+ }
+ else
+ {
+ node = (GskSlNode *) operation;
+ }
+ }
+
+ return node;
+}
+
+static GskSlNode *
+gsk_sl_node_parse_shift_expression (GskSlNodeProgram *program,
+ GskSlScope *scope,
+ GskSlPreprocessor *stream)
+{
+ const GskSlToken *token;
+ GskSlNode *node;
+ GskSlNodeOperation *operation;
+ GskSlOperation op;
+
+ node = gsk_sl_node_parse_additive_expression (program, scope, stream);
+ if (node == NULL)
+ return NULL;
+
+ while (TRUE)
+ {
+ token = gsk_sl_preprocessor_get (stream);
+ if (gsk_sl_token_is (token, GSK_SL_TOKEN_LEFT_OP))
+ op = GSK_SL_OPERATION_LSHIFT;
+ else if (gsk_sl_token_is (token, GSK_SL_TOKEN_RIGHT_OP))
+ op = GSK_SL_OPERATION_RSHIFT;
+ else
+ return node;
+
+ operation = gsk_sl_node_new (GskSlNodeOperation, &GSK_SL_NODE_OPERATION);
+ operation->left = node;
+ operation->op = op;
+ gsk_sl_preprocessor_consume (stream, (GskSlNode *) operation);
+ operation->right = gsk_sl_node_parse_additive_expression (program, scope, stream);
+ if (operation->right == NULL)
+ {
+ gsk_sl_node_ref (node);
+ gsk_sl_node_unref ((GskSlNode *) operation);
+ }
+ else if (!gsk_sl_node_shift_type_check (stream,
+ gsk_sl_node_get_return_type (operation->left),
+ gsk_sl_node_get_return_type (operation->right)))
+ {
+ gsk_sl_node_ref (node);
+ gsk_sl_node_unref ((GskSlNode *) operation);
+ }
+ else
+ {
+ node = (GskSlNode *) operation;
+ }
+ }
+
+ return node;
+}
+
+static GskSlNode *
+gsk_sl_node_parse_relational_expression (GskSlNodeProgram *program,
+ GskSlScope *scope,
+ GskSlPreprocessor *stream)
+{
+ const GskSlToken *token;
+ GskSlNode *node;
+ GskSlNodeOperation *operation;
+ GskSlOperation op;
+
+ node = gsk_sl_node_parse_shift_expression (program, scope, stream);
+ if (node == NULL)
+ return NULL;
+
+ while (TRUE)
+ {
+ token = gsk_sl_preprocessor_get (stream);
+ if (gsk_sl_token_is (token, GSK_SL_TOKEN_LEFT_ANGLE))
+ op = GSK_SL_OPERATION_LESS;
+ else if (gsk_sl_token_is (token, GSK_SL_TOKEN_RIGHT_ANGLE))
+ op = GSK_SL_OPERATION_GREATER;
+ else if (gsk_sl_token_is (token, GSK_SL_TOKEN_LE_OP))
+ op = GSK_SL_OPERATION_LESS_EQUAL;
+ else if (gsk_sl_token_is (token, GSK_SL_TOKEN_GE_OP))
+ op = GSK_SL_OPERATION_GREATER_EQUAL;
+ else
+ return node;
+
+ operation = gsk_sl_node_new (GskSlNodeOperation, &GSK_SL_NODE_OPERATION);
+ operation->left = node;
+ operation->op = op;
+ gsk_sl_preprocessor_consume (stream, (GskSlNode *) operation);
+ operation->right = gsk_sl_node_parse_shift_expression (program, scope, stream);
+ if (operation->right == NULL)
+ {
+ gsk_sl_node_ref (node);
+ gsk_sl_node_unref ((GskSlNode *) operation);
+ }
+ else if (!gsk_sl_node_relational_type_check (stream,
+ gsk_sl_node_get_return_type (operation->left),
+ gsk_sl_node_get_return_type (operation->right)))
+ {
+ gsk_sl_node_ref (node);
+ gsk_sl_node_unref ((GskSlNode *) operation);
+ }
+ else
+ {
+ node = (GskSlNode *) operation;
+ }
+ }
+
+ return node;
+}
+
+static GskSlNode *
gsk_sl_node_parse_equality_expression (GskSlNodeProgram *program,
GskSlScope *scope,
GskSlPreprocessor *stream)
{
- return gsk_sl_node_parse_primary_expression (program, scope, stream);
+ const GskSlToken *token;
+ GskSlNode *node;
+ GskSlNodeOperation *operation;
+ GskSlOperation op;
+
+ node = gsk_sl_node_parse_relational_expression (program, scope, stream);
+ if (node == NULL)
+ return NULL;
+
+ while (TRUE)
+ {
+ token = gsk_sl_preprocessor_get (stream);
+ if (gsk_sl_token_is (token, GSK_SL_TOKEN_EQ_OP))
+ op = GSK_SL_OPERATION_EQUAL;
+ else if (gsk_sl_token_is (token, GSK_SL_TOKEN_NE_OP))
+ op = GSK_SL_OPERATION_NOT_EQUAL;
+ else
+ return node;
+
+ operation = gsk_sl_node_new (GskSlNodeOperation, &GSK_SL_NODE_OPERATION);
+ operation->left = node;
+ operation->op = op;
+ gsk_sl_preprocessor_consume (stream, (GskSlNode *) operation);
+ operation->right = gsk_sl_node_parse_relational_expression (program, scope, stream);
+ if (operation->right == NULL)
+ {
+ gsk_sl_node_ref (node);
+ gsk_sl_node_unref ((GskSlNode *) operation);
+ }
+ else
+ {
+ node = (GskSlNode *) operation;
+ }
+ }
+
+ return node;
}
static GskSlNode *
diff --git a/gsk/gsksltype.c b/gsk/gsksltype.c
index 5045b2e..bb83136 100644
--- a/gsk/gsksltype.c
+++ b/gsk/gsksltype.c
@@ -42,37 +42,12 @@ struct _GskSlTypeClass {
void (* print) (const GskSlType *type,
GString *string);
GskSlScalarType (* get_scalar_type) (const GskSlType *type);
+ GskSlType * (* get_index_type) (const GskSlType *type);
guint (* get_length) (const GskSlType *type);
gboolean (* can_convert) (const GskSlType *target,
const GskSlType *source);
};
-static gboolean
-gsk_sl_scalar_type_can_convert (GskSlScalarType target,
- GskSlScalarType source)
-{
- if (target == source)
- return TRUE;
-
- switch (source)
- {
- case GSK_SL_INT:
- return target == GSK_SL_UINT
- || target == GSK_SL_FLOAT
- || target == GSK_SL_DOUBLE;
- case GSK_SL_UINT:
- return target == GSK_SL_FLOAT
- || target == GSK_SL_DOUBLE;
- case GSK_SL_FLOAT:
- return target == GSK_SL_DOUBLE;
- case GSK_SL_DOUBLE:
- case GSK_SL_BOOL:
- case GSK_SL_VOID:
- default:
- return FALSE;
- }
-}
-
/* SCALAR */
typedef struct _GskSlTypeScalar GskSlTypeScalar;
@@ -129,6 +104,12 @@ gsk_sl_type_scalar_get_scalar_type (const GskSlType *type)
return scalar->scalar;
}
+static GskSlType *
+gsk_sl_type_scalar_get_index_type (const GskSlType *type)
+{
+ return NULL;
+}
+
static guint
gsk_sl_type_scalar_get_length (const GskSlType *type)
{
@@ -152,6 +133,7 @@ static const GskSlTypeClass GSK_SL_TYPE_SCALAR = {
gsk_sl_type_scalar_free,
gsk_sl_type_scalar_print,
gsk_sl_type_scalar_get_scalar_type,
+ gsk_sl_type_scalar_get_index_type,
gsk_sl_type_scalar_get_length,
gsk_sl_type_scalar_can_convert
};
@@ -213,6 +195,14 @@ gsk_sl_type_vector_get_scalar_type (const GskSlType *type)
return vector->scalar;
}
+static GskSlType *
+gsk_sl_type_vector_get_index_type (const GskSlType *type)
+{
+ const GskSlTypeVector *vector = (const GskSlTypeVector *) type;
+
+ return gsk_sl_type_get_scalar (vector->scalar);
+}
+
static guint
gsk_sl_type_vector_get_length (const GskSlType *type)
{
@@ -241,6 +231,7 @@ static const GskSlTypeClass GSK_SL_TYPE_VECTOR = {
gsk_sl_type_vector_free,
gsk_sl_type_vector_print,
gsk_sl_type_vector_get_scalar_type,
+ gsk_sl_type_vector_get_index_type,
gsk_sl_type_vector_get_length,
gsk_sl_type_vector_can_convert
};
@@ -285,6 +276,14 @@ gsk_sl_type_matrix_get_scalar_type (const GskSlType *type)
return matrix->scalar;
}
+static GskSlType *
+gsk_sl_type_matrix_get_index_type (const GskSlType *type)
+{
+ const GskSlTypeMatrix *matrix = (const GskSlTypeMatrix *) type;
+
+ return gsk_sl_type_get_vector (matrix->scalar, matrix->rows);
+}
+
static guint
gsk_sl_type_matrix_get_length (const GskSlType *type)
{
@@ -314,6 +313,7 @@ static const GskSlTypeClass GSK_SL_TYPE_MATRIX = {
gsk_sl_type_matrix_free,
gsk_sl_type_matrix_print,
gsk_sl_type_matrix_get_scalar_type,
+ gsk_sl_type_matrix_get_index_type,
gsk_sl_type_matrix_get_length,
gsk_sl_type_matrix_can_convert
};
@@ -637,6 +637,12 @@ gsk_sl_type_get_scalar_type (const GskSlType *type)
return type->class->get_scalar_type (type);
}
+GskSlType *
+gsk_sl_type_get_index_type (const GskSlType *type)
+{
+ return type->class->get_index_type (type);
+}
+
GskSlScalarType
gsk_sl_type_get_length (const GskSlType *type)
{
@@ -644,6 +650,32 @@ gsk_sl_type_get_length (const GskSlType *type)
}
gboolean
+gsk_sl_scalar_type_can_convert (GskSlScalarType target,
+ GskSlScalarType source)
+{
+ if (target == source)
+ return TRUE;
+
+ switch (source)
+ {
+ case GSK_SL_INT:
+ return target == GSK_SL_UINT
+ || target == GSK_SL_FLOAT
+ || target == GSK_SL_DOUBLE;
+ case GSK_SL_UINT:
+ return target == GSK_SL_FLOAT
+ || target == GSK_SL_DOUBLE;
+ case GSK_SL_FLOAT:
+ return target == GSK_SL_DOUBLE;
+ case GSK_SL_DOUBLE:
+ case GSK_SL_BOOL:
+ case GSK_SL_VOID:
+ default:
+ return FALSE;
+ }
+}
+
+gboolean
gsk_sl_type_can_convert (const GskSlType *target,
const GskSlType *source)
{
diff --git a/gsk/gsksltypeprivate.h b/gsk/gsksltypeprivate.h
index b7166ac..d522e1b 100644
--- a/gsk/gsksltypeprivate.h
+++ b/gsk/gsksltypeprivate.h
@@ -53,7 +53,10 @@ gboolean gsk_sl_type_is_scalar (const GskSlType
gboolean gsk_sl_type_is_vector (const GskSlType *type);
gboolean gsk_sl_type_is_matrix (const GskSlType *type);
GskSlScalarType gsk_sl_type_get_scalar_type (const GskSlType *type);
+GskSlType * gsk_sl_type_get_index_type (const GskSlType *type);
guint gsk_sl_type_get_length (const GskSlType *type);
+gboolean gsk_sl_scalar_type_can_convert (GskSlScalarType target,
+ GskSlScalarType source);
gboolean gsk_sl_type_can_convert (const GskSlType *target,
const GskSlType *source);
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