Am Montag, 16. Juli 2012, 20:39:23 schrieb Matteo Bruni: > + HLSL_IR_BINOP_MUL, > ... > + HLSL_IR_BINOP_DOT, HLSL has 3 somewhat related multiplication operations: "*", "mul" and "dot". Dot is fairly straightforward, but "*" and "mul" have subtle differences. I recommend to write tests to find out the exact details, but as far as I remember "float4 * float4" gives you a float4 with a component-wise multiplication, whereas mul(float, float) returns a scalar like the dot product. "float4x4 * float4" is an error, but mul(float4x4, float4) performs a matrix-vector multiplication and returns a float4.
> +static struct hlsl_type *expr_common_type(struct hlsl_type *t1, struct > hlsl_type *t2, > + struct source_location *loc) This type inference system might be a bit too limited, you have to take the operation into account. e.g. a dot(float3, float4) returns a scalar and crs(float4, float4) returns a float3.
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